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Gorson
Aug 29, 2014

Like most project threads, this is a tale of tragedy and woe. And stupid PO poo poo. And powdered rubber. And squirrel malfeasance.

This is going to be pic-heavy. Sorry 56k!

Part 1: Don't Buy a loving Track Bike

All three of you that read my posts know that I love the Hawk GT. I had originally chosen the Suzuki GS500 as my first bike (it was the early 2000's) and stumbled upon a pic of the culty Hawk GT. Instant love. Drove from western Wisconsin to Escanaba MI to pick up my first one:



Loved it, rode it for a couple years but decided (wrongly, it turns out) that I wanted more. Sold the Hawk and purchased, rode, and sold whatever bike floated through my transom. I never found anything I liked more than the Hawk. So in 2016 I purchased another one:



Cheap and in very good shape but not running. I more or less refurbished this bike with new freaking everything, when I was done it felt like an off-the-showroom floor Hawk GT. It was perfect:



Too perfect. Around this time my whorish wandering eyes saw an ad in Craigslist for another Hawk GT. I wish I had screenshotted the ad, because there were huge red flags that it was a scam and I assumed it was. It was a very grainy pic of a Hawk GT with yellow bodywork. Back in this day of Craigslist there were a huge amount of scam ads but there were always clues. For example, we don't have palm trees here so if the picture of the bike is next to a palm tree it's a likely scam. The fauna around the yellow bike didn't match what we have here, looked more like the South. The text accompanying the ad was very vague and odd. There was no phone number attached. Convinced that it was a scam ad I sent an email because the price was only $1200. I would not have paid this much for it in hindsight.

A few weeks went by and I completely forgot about it, but then I got an email reply from someone who seemed to be a human saying the bike was available and was being stored at a friend of the PO's about 60 miles west. I hooked up the trailer and drove over to take a look. Things were rough. This was a trackbike that had been converted to street. It had been non-op for who knows how long. The PO couldn't provide me with much information on it over the phone. She wouldn't budge on the price. Everything was screaming at me to run away. But GOD drat did the thing look good, even with all the dings and dents. I knew that at this price someone else would buy it, and that thought offended me. All I would need to do is get it running!

So I bought it:



This was 2017. The tail is from a Ducati 748/996 etc. The fiberglass bodywork, best I can tell, is the 90-93 RVF750 from Airtech:

https://www.airtech-streamlining.com/honda-fairings-seats-fenders-parts/RVF75093.html

Here is a quick inventory of mods from the PO if anyone gives a poo poo:

quote:

Hawk Forks with Racetech springs
F2 front wheel 120/70/17 Hawk rear 150/70/17
GSX-1000 Caliper with custom bracket, stainless line
stock rear brake, stainless line
upjetted with stock airbox
Gen1 2 Brothers Headers, custom 2>1 midpipe
Vance and Hines SS2 can
Ducati 748/916/996 tail and seat
CBR900RR shock



It was very rough, but it was mine.

Part 2: poo poo's hosed

That sinking feeling in your gut you get when you realize you may have completely hosed yourself:



Ok so the PO's more of a function over form type of person no big deal....



heh ok we all make some concessions when it comes to wire routing and....



that doesn't look like rubber but thisisfine.jpg



wait what the gently caress



:suicide:

A quick turnaround was off the board. This bike wasn't just rough, it was abused and then cobbled back together at trackside. Everywhere I looked there were problems. But I persisted. The cam holder had been broken by someone overtightening the valve cover, then was heli-coiled which failed and cracked the cam holder when I removed the cover to check valve clearance. I replaced the cam holder and finished checking the valves. Cleaned the carbs and filled it with fresh fuel and it ran as I had assumed it would, until it stalled out and I had to push it back home. Carbs plugged again somehow, and this time when I checked them there was brown stuff in the bowls. That could come from only one place....

This is the real low point of the project, a real dark ages era. Hawk GT tanks are notoriously unobtainable. I don't have any pictures but that brown stuff in the bowls could mean only one thing: the tank was rusty. Turns out, it had been sealed with Caswell or something similar and the lining had started to fail. I could probably go on for hours about how miserable it was to remove an old liner with increasingly toxic chemicals but in the end MEK was able to dislodge the old liner and I was down to extremely rusty metal. I had a POR15 tank sealer kit at the ready and applied it. Waited weeks for it to dry, filled it with fuel AND

AND

it leaked. The tank had pinholes at the low points. I gave up and plugged them with tank sealer putty. It held and continues to hold to this day, but the tank will never be right unless it's completely stripped and welded. To top off this Greek-rear end tragedy I dropped the tank and put a nice dent in it. Don't try to work on a rusty tank yourself send it off to a tank specialist or radiator shop. Trust me, it's just not worth it. The failure nearly made me give up and sell off the whole project. Because of this, it did not get much attention for a year or two.

Part 3: I Can See Clearly Now, My Brain is Gone

Time passed, I stupidly sold the good red Hawk to clear space for other bikes I would wind up liking much less. I needed a rideable Hawk so I plowed headlong back into my poor cursed bird.

The 900rr shock was ditched for a Hagon. I cleaned up all the plumbing and wiring, poo poo-canning the electric fuel pump for a Mikuni vacuum pump mounted up underneath the tank, and added the :siren:pod filters:siren:. There's so much data on Hawk GT jetting that it's fairly easy to dial in.





Parts came, parts went. At one point it had a 2003 CBR600RR front end on it and a VFR800 rear wheel:



VEERRRY much a 10ft bike in this pic. You can't see the rough details in the way the fairings fit, or the little cracks and other damage....or the goddamn fabricobbled subframe and fairing mounts, but more on that later.

:science: Changing the Hawk GT's rear wheel out requires a modified spindle, this one is modified for 4 lugs. But why have one wheel mod when you can have two at twice the price? Changed the rear wheel out for a NC30 18" wheel, requiring a differently modified spindle. I now have 3 spindles, stock, 4 lug, and one modified for the RC30/NC30/RC35:



The V&H can was hilariously toast so it was replaced with the Leo Vince SBK. As it turns out, the CBR600RR forks were bent just out of spec. I wound up selling the forks themselves out as parts and sold the other good bits on ebay. Incidentally, I still have a pair of brand-freaking-new Galfer rotors but since they only fit the 2003-2004 CBR600RR and CBR F4 nobody wants them. If you can use them, make me an offer.

:science: a side note here, you might see us old farts use the terms "F2, F3, F4, etc" this just refers to the generation of CBR600. CBR600 was the first, followed by F2 (91-94) F3 (95-98) and so on. They stopped using this label after the F4/F4i. Virtually all the front ends from this era are interchangeable. Newer front ends like the 2007+ USD 600RR front ends also bolt right up. Same bearings, same stem length.

Wired in a Vapor, most importantly, wired it using stock type plugs without modifying the original harness. One saving grace on this bike is the wiring harness had not been horrifically hacked.



Rebuilt the rear brake, replaced the dust-cushes and worked my cleaning magic on the swingarm. Totally rebuilt the eccentric with new bearings, replaced the grooved rotor with an aftermarket one:



If it seems like I'm making good progress here BRRRT nope I'm not these are changes over the course of three years. During this time I replaced the questionable motor with a super-low mile stock motor. I switched the front end to a rebuilt CBR F3 front end with Race Tech springs (.95 iirc).



It's now time to sit down and have a serious chat about the seat and subframe. This is not the only Hawk GT to have a Ducati tail but considering the work was likely done in the late 90's/early 00's it may have been the first. The Duc tail obviously does not fit the Hawk so the mod is usually accomplished with an aftermarket or custom subframe. The PO went the, uh, custom route:



That's the best pic I have, the tumor on the left is both the support for the rear of the tail and the mount for the taillight. Not only is this hideous but in any kind of crash that subframe is going to shred into shrapnel. I like to work with fiberglass, so I fabbed up a battery box and rear support. It's not pretty but is not meant to be. It served the purpose much better than the PO's solution:



I admit that the Duc tail looks really good....from the right angle. If you've ever seen or sat on one of those Ducs you'll notice just how wide and flat those seats are. The Duc seat is nearly twice as wide as the Hawk tank. It looks odd directly from the back. I bought a Sargent seat for it but even so it had all the comfort of a bench seat at Lambeau Field. So, I gave up on it and threw all the time spent into the shitter and picked up a stock subframe and seat. I had a rear cowl in need of attention, along with the tank these are also unobtainable on the Hawk and always have broken tabs. I recreated the tabs using monomer liquid and acrylic powder (liquid plastic):



...which finally brings us to the near present:



It runs well now and the jetting has been dialed in, not much more to say on this other than it requires removing the carbs for tweaking a bunch of times. I'm in the bodywork phase now, which is tedious af. I'm replacing and/or improving all bodywork mounts as well as fixing the cracks, warps, and weak spots in the fairings. Oh, and a single headlight?? On a 90's race replica?? Not on my watch:





more later

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Gorson
Aug 29, 2014

Right now the to-do list looks like this:

Fabricate new fairing mounts (mostly done)
Fix, straighten, strengthen bodywork
Cut headlight holes, mount headlights
Route and tidy up front wiring
Paint

I'm keeping the same "livery" and colors because it's :krad: and I'm not creative enough to come up with something better.

I mentioned before that I like working with fiberglass. The main reason is that with fiberglass what is hosed can always easily be unfucked. This is the looking down a straight edge of the lower fairing and it's as crooked as a politician. To fix it I flex the fiberglass along that line until it cracks lightly. Then I add a layer of resin and cloth to the back and clamp it down, ending up with a straight edge after it cures. None of this is necessary but these little fitment flaws will bother me if I don't.



These gaps cut into the lower fairings for header clearance were covered by aluminum shields riveted into the lower. Honestly it's not a bad solution and the work was good but since the fairings have been shifted they no longer line up. I'll be using fiberglass instead.

Gorson
Aug 29, 2014

HenryJLittlefinger posted:

This thread sucks

Make a build thread, they said. It will be fun, they said.

Gorson
Aug 29, 2014

HenryJLittlefinger posted:

For real though I didn’t realize you could reform fiberglass by flexing it until it cracks and re-resining it. I’d always assumed the only option was to scrap it or load it with filler and sand. Cool poo poo.

Yup, don't need to crack it all the way through if it is thin enough you can just work it over a bit with a pliers or something. Fiberglass does have some "memory" in the sense it will go back to the shape it was before if you don't make it forget its old shape. Thicker fiberglass might need cuts perpendicular to the line. For just straightening or repairs this is Good Enough but since this is all painted vanity nonsense I'll have to smooth and sand one side.

The other option to fix a warp is to fill the "inside" bend of the warp and then sand down the outside, but this creates a ton of extra dust and uses up more sandpaper and material as this highly technical diagram illustrates:



"Fill" in most cases means resin and cloth. I only use filler putty on very small holes or dips . I should add at this point I am in no way a fiberglass expert; I picked it up a long time ago and taught myself how. A true hack.

Gorson
Aug 29, 2014

Every once in a while I remember things that were so wrong with this bike that I have apparently memory-holed:

The original single front caliper was taken from a different bike and adapted using an adapter plate using the stock Hawk rotor...nothing out of the ordinary there. However the caliper they chose used pads with a wider surface area than the rotor, so that the pad overlapped the inner (non-braking) area of the rotor. As you might guess, those two surfaces along with the pad material have different wear rates and looking at the pads you could see the uneven wear where the pad was riding on the inside of the rotor. I thought about ways to fix it for about 3 seconds before tossing the whole thing out. Now it has dual F3 rotors and rebuilt calipers:

Gorson
Aug 29, 2014

A milestone of sorts was passed today. The PO's fairing mount was a homemade "T" shaped bar that mounted to the front tank bolt then attached to the rear upper "wings" of the fairing, typical of 90's supersports. The mirrors were also mounted at these points, making them 90% useless:





The part on the right held the headlights and was bolted behind the steering head. This made the cockpit super cramped, you couldn't see the gauges or mirrors, and the rear mount would cut into your hand if you even approached full lock....probably not big issues for a track bike. I needed something better but the lack of a welder was holding me back. I picked up a used stick welder while this isn't ideal for this kind of work it does let me booger things together. Cobbled together this thing:



By taking the PO's headlight mount, cutting it short, and welding two mirror mounts cut from a CBR900RR rear fairing mount. I then added two tabs to the upper fairing for the mirrors. This eliminates the rear mount and gives way more clearance.





Mirrors work great now. The tabs will be cut down and smoothed out. These are the original mirrors and not the mirrors I'll be using.

Gorson
Aug 29, 2014

Just doing a bunch of touch up with fiberglass that takes time. I like to give it several days to cure before I sand. This is definitely not my preferred way of working, I'm someone who will work on mechanical things until I run out of either parts or tools, but with bodywork the waiting breaks up my work flow.

Speaking of, I was back at it yesterday but this time on the VFR. The Goldwing has taken its place as the "get poo poo done" bike and I just don't ride the viffer anymore. I'm trying to pare down to 3 bikes max so up for sale it goes. Sadly, these old VFRs are worth less than a beat up Ninja 250. I think it's the carbs and the (mostly justified) difficulty of working on them that turns people away. This one had a combination of F4i forks rebuilt with brand new stanchions and Race Tech springs, F4i brakes, Gen 6 VFR triples, Gen 6 front wheel with new bearings, and new rotors. I pulled this front end off and put the original back on because it's worth almost nothing on the bike but about $600 off it. Harsh lesson on how you never get your money back on upgrades. Whole front end switch took all of 1.5 hours, jobs that used to be daunting are now routine.



Even in this market it's only worth $1800-$2000 which is an insane bargain for this bike especially since unlike other VFRs this one needs nothing. Literally everything works, including all the dash lights(I rebuilt it). Anything less than that and it isn't worth selling and will go on the future project list.

Gorson
Aug 29, 2014

Slavvy posted:

Just found this thread and the presence of pod filters is distressing but I'll bite my tongue.

What made you go for the 18" nc30 wheel? I can't imagine they're easier to get tyres for than they were ~10 years ago when I had one.

I have paid the price in time for making the pod filters work. There's a good amount of data to draw from the racers so getting the jetting right wasn't too bad. That said I do have the original box and if the intake noise ever bothers me it's going back on.

I bought the 18" wheel because I got a good deal on it and because this is an NC30 replica of sorts. Tire choice is not great. I would much prefer the 17" from the RC30 (e: meant RC35, RC30 is 18") or RC45 but prices on those are astronomical. I'd also like to get another 17" VFR 5 spoke for it since I have the spindle for the swap.

I've been dealing with a bum knee so I've got gently caress all done on this in the last couple weeks but I couldn't resist this minty Sherpa for $2300. Like every bike I buy it doesn't run, hasn't been registered since 2018. Just need to clear out the pilot jet.

Gorson fucked around with this message at 13:22 on Nov 2, 2021

Gorson
Aug 29, 2014

Fixed! Runs good, plenty of lean pop but it's only low 40's out.

Gorson
Aug 29, 2014

I could work on air cooled single dual sports all day, everything is bing bong so simple. It's at e:4200 miles and due soon for a valve check, when I do that I'll do some fiddling with the carb.

Gorson fucked around with this message at 02:27 on Nov 5, 2021

Gorson
Aug 29, 2014

Slavvy posted:

gently caress yeah!!! The best bike in the world returns!

They are jetted a little lean out of the box, iirc I stepped my pilot jet up a little and when I got a noisy muffler, shimmed the needle a bit.

This thing is being strangled by the pilot jet (17.5 lmao) do you remember what you went up to? Internet says #20.

Gorson
Aug 29, 2014

Slavvy posted:

I think 22? But I know I went a bit too big and had to run only half a turn on the screw so 20 sounds right.

Internet also says 130 main but I don't think that will do any good on this bike. You wouldn't happen to know if there's a short choke knob that fits this carb? I'd prefer that over the cable operated one. I'd also like to swap in a manual petcock.

Gorson
Aug 29, 2014

HenryJLittlefinger posted:

I’ve used the generic Yamaha petcock on one Yamaha and two Suzukis successfully. It’ll be listed as the replacement for a Yamaha Raptor on eBay. Zero issues in many years and many miles.

Looks like that fits the sherp so I'll order one up, thanks.

Gorson
Aug 29, 2014

Update?

Process of winterizing 16 some odd carburetors and brutal winter weather with brutal garage heating costs has left me with zero desire to work. Honestly if someone came along and stole all these things they'd be doing me a huge favor.

Gorson
Aug 29, 2014


HenryJLittlefinger posted:

Lol fuckin got im

:mods:

Winter season has changed to Potential Nuclear Winter season, so lets start some bieks!

First up the Sherpa, this should be some easy points-on-the-board. Bowl was drained, battery moved inside, tank filled with non-ethanol primo, choke on, last run early November, ambient temp 35F. Goin vertical:

https://www.youtube.com/watch?v=JY8zDEILLcQ

Choke plunger is sticky which is why I don't like dash mount plungers.

Gorson
Aug 29, 2014

Fellow travellers/readers of The Gorson Thread will definitely want to check the voltage your tender is putting out. I have 3 tenders, 2 brick Schumachers and a Battery Tender wall wart. One of the bricks is older and heavier. It charges at a max of about 14.5v and will cycle down when the charge is full. The wall wart does about the same. However the newer, much lighter, cheaper feeling Schumacher brick will charge up to 15.5v which over time may be a bit much for some batteries. I don't trust that charger and only use it for short periods.

Gorson
Aug 29, 2014


SA is basically nothing like Reddit, you can't get probed for anything these days.

The VFR has always been a hard starter. I fully drained this one of fuel in the fall so I could swap the tank. I do a little prep on it first by priming the fuel system with a relay jumper, then turn the bike over a few times to get the juices going. Then I'll let it sit on the charger for a day while the battery gets back up to full. Choke on, last run in November, ambient temp about 40F. Had to fiddle with the idle stop screw because I can't remember where it was set. I'm mainly doing this out of boredom, but also to show that even ancient carbed bikes owned and maintained by a hack fraud will still start in the Spring. The biggest mistakes people make are not priming the fuel system and cranking the bike over until the battery is shot. Sometimes you have to take it in bites.

https://www.youtube.com/watch?v=chyzaN-LQGI

We had some nice weather here yesterday so I finished putting the VFR back together with the stock brakes, new pads, and new fluid. I'm tempted to sell it but nobody wants them so their value bottomed out years ago. I'll probably throw it up for a higher price and see what happens. It does need tires, the front was what came on the bike and is dated 2011 and the back was a new one of mine that picked up a nail and is shot. I can't ride it because of this which is sad because other than the bodywork this is one of the nicest gen 4's left out there. Everything works, all dash lights, gauges, etc.



The Goldwing has been very slowly piddling coolant from both the left cylinder and from the water pump weep hole. I have suspected the left head gasket is failing for a while, and the coolant from the weep hole is likely the water pump seal. These are not difficult fixes on the GL1100, but they can wait a bit. I do not expect issues starting it they have big batteries and a big starter motor and the boxer configuration spins up easily.

Gorson
Aug 29, 2014

Slavvy posted:

Maybe take the plugs out of the wing before your turn it over as one of the cylinders might be filled with coolant

Pulled the left plugs:



Steam cleaned. Pulled the right ones and they look the same. If I stick my nose down next to the cylinder I don't smell coolant but I obviously have some getting into the chamber. Also noticed this (left side):



You can see some coolant pooling there, it's coming from the coolant fitting above it. This explains the leak on that side. You can't see this with the plugs in there is a rubber boot covering that area. GL1100's are still cheap as poo poo and it might be time to start looking for another parts bike. Anyway I've cleared space on the main stage so that the lord's work can continue:

Gorson
Aug 29, 2014

Switching things up a little today, a friend of mine wants to get Goldwing #2 running so he can ride it around this summer. It also has been weeping coolant from the pump weep hole, so it needs the same seal and pump replacement as my other Wing.

Removed the front cover, cleaned out some significant sludge. The water pump seal is on the bottom right, and when this seal fails the oil and coolant mix. It was intact when I started but after ripping the crusty rubber off it a bit you can see it has failed, the steel inner ring is rusted:



Several of the o-rings in here were failing so I'll be replacing all of them. Here's the original pump, I know it's the original because the fan is bakelite. You can also see the mocha colored milkshake that indicates a mixture of coolant and oil:



Just need to clean up the surfaces of old gasket and install the new pump. Not a terribly difficult job and I'll get some practice for the other Goldwing.

Gorson
Aug 29, 2014

LimaBiker posted:

Bakelite is tolerant of temperatures over 100c and also very oil/chemical resistant. Pretty decent choice for an impeller, though i don't know why they went for bakelite and not aluminium or so.

Yeah my guess is in their testing the bakelite was stronger than the plastic tech they had in the late 70's/early 80's, but who knows why they wouldn't have chosen aluminum. It survived to this day so they couldn't have been totally wrong. The OEM replacement pumps are all metal bladed.

Gorson
Aug 29, 2014

Jim Silly-Balls posted:

That pic is of the water pump drive area plus the back (side?) of the transmission. Not all of that is for the pump



The upper right arm is connected to a shaft leading back to the shifter, the bottom left leads back into the case to the shifter drum and forks. This whole area is bathed in oil and that seal is what stops coolant from seeping into it.

I'm just waiting on a few parts.

Gorson
Aug 29, 2014

Gorson
Aug 29, 2014



Drake no



Drake yes



For every job a tool. Sometimes that tool is me, sometimes it is a couple PVC joints and scrap wood.



This turned out better than expected. I had anticipated issues getting the PVC "molds" to release after the fiberglass cured but a little torque on them and they twisted and wiggled right out. I use car wax as a release agent.

This makes the final result smooth on the correct side but rough on the who-loving-cares side. This saves on sanding.



They will get cut off and only stick in 1.5" or so at the deepest. Looking back had I thought of this at the start I could have both filled the original single light hole and created the two round holes at the same time.



Fairing mount reinforced and a tab welded on to move the gauges forward. There is plenty of room below now for the cables to move without binding. This was a huge issue when I bought it.

Gorson
Aug 29, 2014



Cut the depth down and test fit the lights. They're NC23 reproductions. The fit inside the cylinders is perfect.

Gorson
Aug 29, 2014

HenryJLittlefinger posted:

Yeah that owns. Let me know when I can pick it up.

Slavvy posted:

I'll take one in rothman's or classic HRC livery. My Nigerian father in law is forwarding the deposit as we speak.

Gorson
Aug 29, 2014

It's not about understanding, it's about feeling the vibes.

Gorson
Aug 29, 2014

Needed a way to mount the headlights. Originally the front headlight (F2? F3? Not even sure what it is) was mounted to the bracket bolted below the steering head, with the upper fairing bolted to a bracket that mounted to the tank bolt. You can see these in the pictures above. The fitment was crap. The rear mount was removed, and the the front mount was modified heavily to make the fairing mount "ears", so it no longer has the headlight tabs. I decided to fix the headlights directly to the fairing so the whole thing comes off as one.

First I create some quick "molds" out of aluminum tape:



I mixed up some resin and dropped some shredded up fiberglass into it to make a slurry. Without the fiberglass the resin can be very brittle. I pour the slurry into the molds and let it cure, then sand it down so I have strong mount points:



If I had some M5 brass inserts around I would have epoxied them in, or I could have epoxied or glassed in some m5 nuts, but I felt like a bit of experimenting. I once fixed a stripped bolt from the bottom of a boat by threading the bolt into the hole filled with marine epoxy. When the epoxy cures, you spin the bolt out and are left with threads. So with this in mind I turn to the local welder, JB, who is up to the challenge. I fill those holes with JB's magic and thread a bolt with some car wax on it (release agent) into the JB and let it cure. After curing I turn the bolt out (they break torque with a delicious CRACK) and I'm left with threads. You can thread a bolt in there and pick the whole fairing up by it, so it should have plenty of hold for a couple of plastic and glass headlights.



Brass inserts are the better way to go here, if I had some lying around. M5x.8 bolts don't have very thick threads and my worry is that vibrations will eventually weaken them. A little loctite in the thread should keep things nice and tight.

Gorson
Aug 29, 2014

Last fall while riding the Sherpa I got a whiff of fuel and it started losing power. I could see a small pinhole leak on the bottom of the tank, and since that hole was now the path of least resistance the bike was starving for fuel. I was a mile and a half away from home, didn't have the power to ride home, and didn't have anything to plug the hole.....so I had to walk-of-shame the bike back home while it peed out fuel in a small but steady stream. Fuckin bikes, man.

Anyway I drained the tank and can see rust down in the seams of the tank, but the rest of the tank was near perfect. This is a sign of very long term storage without the bike moving. Not wanting to gently caress with it too much I put a tank patch on the hole and added an inline filter. This tank needs a liner, but I'm not going to do it until the end of the season. The pinhole is still patched so I drained the tank again and this time put evapo-rust in and let it sit for two days. Then I drained it and coated the insides with fogging oil. This should stop it from flaking as long as there is fuel in it. Taking this opportunity I changed out the pilot jet from 17.5 to 20, which will definitely help the cold bloodedness. I also have a manual petcock replacement for the vacuum one.



I think I paid $75 shipped for the Hawk tank, which might not sound like it but is a steal. Since the Hawk was such a low volume bike, the most difficult pieces to obtain are now the tank the the rear plastic cowl. This one has a few small dents that need to be filled and is coated with a liner, but is still in better shape than the one on the bike.



In better news this is now a running, mostly fully functional but ugly bike. I'll be doing a couple extremely cheap things to make it look better. You might notice the rear end sags, this is because the air shocks no longer hold air and bottom out.

Gorson
Aug 29, 2014

Steakandchips posted:

Very nice work.

Also, is a goldwing a goldwing if it has no bags? :hmmm:

Thanks, took it down to the bank today and on the way out saw the bike against the backdrop of a mid size vehicle. I'd never noticed how small the Oldwings are without all the bodywork. It's roughly the size of a Bonneville. Heavier than the Triumph, I'd guess still close to 600lbs wet, but the weight is so low you don't feel it. Hilariously easy to scrape with those awful floorboards on it (the standard pegs are hard to find used).

Gorson
Aug 29, 2014

Revvik posted:

What are you going to do for the rear shocks? Those are one of the more critical things I need to take care of on my GL1100, and I’d like to not spend crazy on that.

Options that I've found from cheapest to most expensive:

1. Rebuild air shocks with new rings. Hope they seal.
2. VTX1300/1800 should fit, can't confirm it.
3. Randakk's has a decent selection of new ones. Their sales tells me cheap replacements 32-0107 (~$110 shipped) should fit. 13" Hagon eye-to-eye (~$260 shipped) should fit but will be a little long.

https://www.randakks.com/motorcycle...er=name.keyword

4. YSS has a shady looking US distributor that quoted me something over $400 for a pair, you can find them shipped from Europe for under $300.
5. Bitubo ($500 shipped from EU).
6. Ohlins etc etc.

e: stick Progressive (brand) in there too, around $300 shipped.

Gorson fucked around with this message at 10:53 on May 4, 2022

Gorson
Aug 29, 2014

No more vacuum petcock:



Sherpa is refueled and starts much easier now with the bigger pilot jet.

Gorson
Aug 29, 2014

First step of filling in the lower gaps for the exhaust, roughing it out. Those sharpie scribbles mean something to my addled brain.

Gorson
Aug 29, 2014

A pic of final (I swear) fairing alignment before I took it down for glassin'.



You can see a little bit that I've shallowed out and softened the "eye sockets".

Gorson
Aug 29, 2014

Choke plunger from a XT225 works in the Sherpa:



I just need to replumb that fuel line. One less cable to go bad or bind.

Gorson posted:

The crazy things you find in carb sets. Check out this GL1100 carb rack I bought off FB marketplace for $40:



You can see one major repair in this pic, what you can't see is that the 80-81 GL1100 had pressed in pilot jets; at some point those pilot jets are going to plug so badly they won't clear, you can't get them out, and Honda never made replacements. This kills the carbs. When they fully plug you could try to drill them out, I suppose? Anyway, 82-83 has normal threaded pilots you can remove. You can see the difference by looking down the hole, one has the slot for a screwdriver one does not. On this particular set of carbs, 2 are pressed in pilots, 2 are screw out. However I have no idea if two of these carbs were taken from an 82-83 or did someone just take some screw in jets and jam them in the holes? I put as much force as I was comfortable with in trying to unscrew them, but any further and I risk chipping the jet. You can also see these have been rebuilt at some point since all the screws were replaced with stainless hex caps. Who knows how many people have had their fingers in these things. Who knows what has been replaced.

From another thread. It gets deeper. One side of those carbs had 120 main jets, the other side had 145's (one of which was aftermarket). There's another bike that uses 120 main jets and has very close (but not exactly the same) carbs as the GL1100, and that's the GL1000. Also, the floats on that side were adjusted to GL1000 height. So my guess is that someone combined a set of 1100 and 1000 carbs.

This rack had a pilot jet that would not clear. I had another rack of carbs with the same carb that wouldn't clear, so I split both sets down the middle and boiled the gently caress out of both. I use a mix of pine sol and water but I don't know if it matters, the idea here is just to get as much heat as possible into that pilot jet to blast it free with air. I was able to clear one half, and taking this rack combined it with the other working half, installed 145 mains all around, set the correct float heights, and now this thing runs pretty good:

Gorson
Aug 29, 2014

Exhaust cuts/fills on the lower fairing are nearly done. Added a little bump below where each header curves back into the fairing:



Gorson
Aug 29, 2014

Before:

Gorson
Aug 29, 2014

Needed to take some test runs to make sure nothing was going to melt and I'm happy to report zero fires. The Hawk GT is a very smol bike but put it up to BIG AMERICAN IRON and it may as well be a pocketbike:

Gorson
Aug 29, 2014

Long term plans are a high-mount left-hand-exit exhaust. Honestly I've always preferred the sound of the Hawk with a stock exhaust, but it just doesn't work here with the fairings. 52 degree vtwins don't make glorious Ducati L-twin noises, it's a bit like a Jetson's car at low rpm but makes a nice growl once you get up in the rev range. I'll get some audio of it one of these days.

Gorson
Aug 29, 2014

Rev. Dr. Moses P. Lester posted:

That thing looks hella rad but also what’s the point of naca ducts on the mirrors like that?

Yeah it's dumb, purely cosmetic. These fairings are some kind of custom design around the RC45, which had smaller functional NACAs that fed the airbox. I've considered filling them in.

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Gorson
Aug 29, 2014

There's joy in simplicity. I've been exclusively riding the Sherpa around since the Goldwing's rear MC failed. The Sherpa is as "complete" as it needs to be for now. Here's a list of fixes/improvements:

high mount fender
new front rotor (old one was warped)
ProTaper sport bars with risers
Double Take mirrors
choke plunger
Happy Trails rack with Givi Monokey plate



Today it was the Goldwing's turn. The circlip from the rear MC popped out and along with it went fluid. These rear MC's are a common failure point on these bikes because of their location; hard to get to and right next to hot exhaust.



There are no replacements available, so I had to adapt a rear MC from a VTX1300:



This is looking at the right side of the bike behind the right plastic side cover. I made a v-shaped bracket from scrap steel and mounted it in the stock holes in the frame. Extremely fiddly getting everything in there, the bracket in front is the valve for the rear air shocks.

I had already rebuilt a rear caliper that was mounted up to the parts bike. The parts bike did what a parts bike does and donated the caliper. I replaced the original rubber line with a Galfer:



Braking restored, the rotor was quite hot after a test run so it's dragging a bit more than I would like. It's probably the slider pins I don't remember if I replaced them or not. Releasing brake pressure via the bleeder doesn't loosen it up so I don't think it's the MC.

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