|
Geirskogul posted:Isn't stainless a fairly weak metal, though? Like "grade 2"? It's not that weak that it would be an issue in this application and corrosion resistance is much more important.
|
#
?
Aug 18, 2016 18:38
|
|
|
|
| # ? May 26, 2024 19:57 |
|
|
DocCynical posted:Nope, everything was still balanced. The bolts came loose and instead of 350A going through the lug and bus bar surface area, it was close to all of it going through the two bolts. Much less surface area and cross sectional area as well as steel not being as good a conductor. It is slightly hard to see in the photo, but that lug is really only contacting at the top. The wire heating is from the bolts, copper conducts heat well. This plus the fact that without the clamp load, your actual contact cross sectional area between the lug surface+holes and the bolts and nuts was probably even worse than the cross sectional area of the bolts themselves. If you had let it cool and turned it back on, I bet the heat would start at the crests of the threads on the bolts and a spot or two on the underside of each bolt/nut head and radiate outward from there.
|
|
#
?
Aug 18, 2016 19:35
|
|
|
Geirskogul posted:Isn't stainless a fairly weak metal, though? Like "grade 2"? Basically you need to be more specific, because 'stainless' is a huge family of alloys running from 'lovely grade 2' to 'the stuff we make reactor vessels out of'.
|
|
#
?
Aug 18, 2016 20:03
|
|
|
Stainless hardware you would find at home depot. Definitely high strength reactor grade stuff.
|
|
#
?
Aug 18, 2016 20:17
|
|
|
ArcMage posted:Basically you need to be more specific, because 'stainless' is a huge family of alloys running from 'lovely grade 2' to 'the stuff we make reactor vessels out of'. I think most LWR reactor vessels are made of carbon steel. That's what makes Davis-Besse, unit 2 so  .
|
|
#
?
Aug 18, 2016 21:14
|
|
|
Groda posted:I think most LWR reactor vessels are made of carbon steel. That's what makes Davis-Besse, unit 2 so It's lined with stainless inside (which was enough to keep the coolant contained).
|
|
#
?
Aug 18, 2016 22:03
|
|
|
I thought they were lined with zirconium. Or is that the rods/pellets? Anyway, I mean standard hardware store stainless, which IIRC is weaker than most other grades. But I don't know your application so  wasn't trying to make waves.
|
|
#
?
Aug 18, 2016 23:38
|
|
|
Geirskogul posted:I thought they were lined with zirconium. Or is that the rods/pellets? Zirconium is used for fuel cladding. A reactor pressure vessel is a couple of inches of carbon steel with a thin stainless liner. That's what was so fun about Davis Besse. The borated water had already eaten a hole through the carbon steel section and the stainless liner was the only barrier left. 
|
|
#
?
Aug 18, 2016 23:44
|
|
|
That's a much better picture than on Wiki. Thanks. Queen_Combat fucked around with this message at 00:37 on Aug 19, 2016 |
|
#
?
Aug 18, 2016 23:58
|
|
|
Geirskogul posted:Isn't stainless a fairly weak metal, though? Like "grade 2"? a) Be really shiny. b) Not rust when used on a boat trailer. It all worked great until they snapped due to either the work hardening given to them during fabrication or as they transmitted loads. It did however confirm everything us grunts thought about our managers.
|
|
#
?
Aug 19, 2016 01:28
|
|
|
Geirskogul posted:That's a much better picture than on Wiki. Thanks. That's actually better than the racecar one that I'm sure someone will repost later on. "My planet neeeds meeeeeeee."
|
|
#
?
Aug 19, 2016 02:29
|
|
|
So a relatively new C7 Z06 wouldn't crank over...    
|
|
#
?
Aug 19, 2016 03:30
|
|
|
how
|
|
#
?
Aug 19, 2016 03:34
|
|
|
So this is a 2011 Chevrolet Traverse with 106,000 miles. The engine is the 3.6 direct injection. Came in for check engine light, code was P0300. So I said - yeah - start with spark plugs and an injection cleaning because these engines are known for carbon build-up. Boy I thought I was talking out of my rear end to get the injector cleaning sale - the intake valves seem to have a real problem:  This is the best I could manage with dumping injector cleaner and various other chemicals down and trying to brush and blow it all out. After that, I put it back together and did that induction cleaning... twice.  EDIT: also - the intake tube was full of oil. There's a resonator chamber in the air intake hose - that was full of goo. Changed out the PCV valves too after finding that. 0toShifty fucked around with this message at 03:44 on Aug 19, 2016 |
|
#
?
Aug 19, 2016 03:35
|
|
|
Root Bear posted:So a relatively new C7 Z06 wouldn't crank over... Hot drat! What the hell happened there?
|
|
#
?
Aug 19, 2016 05:35
|
|
|
The Royal Nonesuch posted:Hot drat! What the hell happened there? Two piece valve doing two piece valve things it seems by the picture.
|
|
#
?
Aug 19, 2016 05:36
|
|
|
Titanium valve train problems
|
|
#
?
Aug 19, 2016 05:39
|
|
|
So now we're at two gens of Z06 with valve issues?
|
|
#
?
Aug 19, 2016 05:55
|
|
|
Enourmo posted:Maybe in general don't leave sealed containers of volatile, flammable substances in direct sunlight/hot cabins. Yeah it's never intentional but it happens, especially because they are pretty prone to falling out of your pocket.
|
|
#
?
Aug 19, 2016 16:57
|
|
|
iwentdoodie posted:So now we're at two gens of Z06 with valve issues? I bet the computer history tells some over rev story.
|
|
#
?
Aug 20, 2016 02:33
|
|
|
Christobevii3 posted:I bet the computer history tells some over rev story. GM is kind of known for valve train issues on every iteration of the LS motor.
|
|
#
?
Aug 20, 2016 03:18
|
|
|
iwentdoodie posted:GM is kind of known for valve train issues on every iteration of the LS motor. Isn't the motor in question a gen5 LT motor?
|
|
#
?
Aug 20, 2016 04:13
|
|
|
Raluek posted:Isn't the motor in question a gen5 LT motor? The new LT1 is based off the LS3.
|
|
#
?
Aug 20, 2016 04:26
|
|
|
Raluek posted:Isn't the motor in question a gen5 LT motor? Yes. And like blackmk4 said, it's LS based. Almost all (or possibly actually all) GM V8 motors since like 02 or so are technically LS motors. From the 4.8 to the 7.0.
|
|
#
?
Aug 20, 2016 04:32
|
|
|
Oh, I thought the LT motors were significantly different because of all the direct injection and such. I guess they're more similar than I thought.
|
|
#
?
Aug 20, 2016 04:56
|
|
|
DocCynical posted:Yeah, my camera has a max of 280˚C. Anything over it just says >280˚C. I haven't seen low voltage terminations rated for 90C. THHN I believe is rated 90 but you pretty much always need to debate it for low voltage connectors. Now I think the 13.8kV terminations I have are rated 115C. 
|
|
#
?
Aug 20, 2016 15:42
|
|
|
Geirskogul posted:That's a much better picture than on Wiki. Thanks. It's trajectory appears to be sending it at the car waiting at the stop sign.
|
|
#
?
Aug 21, 2016 05:37
|
|
|
iwentdoodie posted:GM is kind of known for valve train issues on every iteration of the LS motor. The bad castech heads took my 5.3L swap in a 2dr blazer. gently caress u GM and cutting corners. http://www.performancetrucks.net/forums/gm-engine-exhaust-performance-21/castech-heads-casting-problem-years-495565/ Christobevii3 fucked around with this message at 05:43 on Aug 21, 2016 |
|
#
?
Aug 21, 2016 05:40
|
|
|
Nothing earth shattering or truly hilarious, but these all made me chuckle. A small number of Buicks have improperly installed gas lines which can cause them to live the dream: http://www-odi.nhtsa.dot.gov/owners/SearchResults?refurl=email&searchType=ID&targetCategory=R&searchCriteria.nhtsa_ids=16V595 Ditch Witch has a few bad wiring harnesses which sadly don't live up to what I was hoping. I thought this was some sort of deadman switch before I read the description. http://www-odi.nhtsa.dot.gov/owners/SearchResults?refurl=email&searchType=ID&targetCategory=R&searchCriteria.nhtsa_ids=16V541 nhtsa posted:Charles Machine Works Inc. (Charles Machine) is recalling certain model year 2016 Ditch Witch T14MV trailers manufactured June 23, 2015, to July 01, 2016. The affected trailers may have an incorrect wiring harness that could result in the brakes not applying in the event that the trailer separates from the tow vehicle. But this doesn't matter if you hook it up to a Jeep because the whole drat hitch assembly comes off: http://www-odi.nhtsa.dot.gov/owners/SearchResults?refurl=email&searchType=ID&targetCategory=R&searchCriteria.nhtsa_ids=16V545 nhtsa posted:SUMMARY: And ~1000 BMW M-Series have something they couldn't blame on improper use of the vehicle: http://www-odi.nhtsa.dot.gov/owners/SearchResults?refurl=email&searchType=ID&targetCategory=R&searchCriteria.nhtsa_ids=16V540 nhtsa posted:SUMMARY:
|
|
#
?
Aug 22, 2016 15:03
|
|
|
|
|
#
?
Aug 22, 2016 21:19
|
|
|
That can't be rust and gunky oil, is it a termite nest or something?
|
|
#
?
Aug 22, 2016 21:42
|
|
|
VikingPenguin posted:That can't be rust and gunky oil, is it a termite nest or something? I'm voting flood car
|
|
#
?
Aug 22, 2016 22:00
|
|
|
Brigdh posted:I'm voting flood car or WOT into a bog.
|
|
#
?
Aug 22, 2016 22:03
|
|
|
"Watch what happens when I pour jello chocolate pudding mix into an RX7!"
|
|
#
?
Aug 22, 2016 22:16
|
|
|
So this begs the question: Which part generally explodes when you hydrolock a rotary engine? Comedy answers are probably related to "x in, apex seals out"
|
|
#
?
Aug 22, 2016 22:24
|
|
|
ShittyPostmakerPro posted:So this begs the question: Which part generally explodes when you hydrolock a rotary engine? Your overdraft. Though I'd like to see a rotary casing failure.
|
|
#
?
Aug 22, 2016 23:05
|
|
|
Paging Spyder to the thread. Or maybe an abused rotary got his senses tingling already.
|
|
#
?
Aug 22, 2016 23:06
|
|
|
Are we making fudge brownies?
|
|
#
?
Aug 22, 2016 23:44
|
|
|
I don't actually have any more details than that picture, but the guy who sent it to me believes it got hydrolocked in a flood and then left full of water for a few years.
literally a fish fucked around with this message at 23:57 on Aug 22, 2016 |
|
#
?
Aug 22, 2016 23:54
|
|
|
|
| # ? May 26, 2024 19:57 |
|
|
Having opened rotaries looking like that, yep, that's a flood victim. *quickedit* For bonus points, that's an S3 13B. mekilljoydammit fucked around with this message at 02:08 on Aug 23, 2016 |
|
#
?
Aug 23, 2016 02:05
|
|
