|
Alphius posted:friction with the pin during a lifted state. I'm no Honda engineer (nor have I ripped apart my F22C yet), but the mechanical force required to displace the pin while the two outside rockers aren't riding their lobes is going to be significantly higher than when they're supported. I think you'd need to put deliberate effort into doing it wrong in order to get that pin to move such that the rockers dropped to the lobe.
|
#
?
Mar 21, 2013 18:55
|
|
|
|
| # ? May 16, 2024 19:14 |
|
|
More importantly, where the hell does the pin that locks them together come from and how does it get in there?
|
|
#
?
Mar 21, 2013 19:03
|
|
|
Dave Inc. posted:More importantly, where the hell does the pin that locks them together come from and how does it get in there? Think of it like the cylinder in a lock if you're familiar with that. The pin is cut in three places, such that the cuts align with the gaps between the three rockers and everything moves freely. If you offset the three pin-segments slightly, then they start to mechanically bind the three rockers to travel together.
|
|
#
?
Mar 21, 2013 19:09
|
|
|
Also:Wikipedia posted:The switch-over point is variable, between a minimum and maximum point, and is determined by engine load. The switch-down back from high to low RPM cams is set to occur at a lower engine speed than the switch-up (representing a hysteresis cycle) to avoid a situation in which the engine is asked to operate continuously at or around the switch-over point. The guess that I'd make from this is also that it's timed electronically to occur when the followers are in contact with all three lobes.
|
|
#
?
Mar 21, 2013 19:11
|
|
|
I don't understand how the pin can get rammed in there while the engine is spinning without some issues - I am guessing that diagram is a simplification for the purposes of explaining the system, though.
|
|
#
?
Mar 21, 2013 19:11
|
|
|
http://www.youtube.com/watch?v=nc800hkqY2M
|
|
#
?
Mar 21, 2013 19:18
|
|
|
kastein posted:I don't understand how the pin can get rammed in there while the engine is spinning without some issues - I am guessing that diagram is a simplification for the purposes of explaining the system, though. There isn't very much force at all on the rocker arms. The pin is made of hardened steel and only needs a small amount of oil pressure against it, it just slips in when the holes line up. The speed difference between the small and large rocker arms is minimal. There isn't much force involved at all; motorbike gearboxes use the same principle to engage gears where the forces and relative speed difference is much greater and have no problem. Incidentally, the toyota vvtL-i system does the exact same thing as v-tec but in a different way so as to circumvent the patents. Both lobes are in contact with the same big rocker arm (which sits underneath the cam), except the follower pad thing touching the bigger lobe is constantly collapsed and doesn't do anything. At the appropriate rpm oil pressure fills the rocker arm and the pad is filled rigid, allowing the larger lobe to act on the rocker as a whole. It's basically a hydraulic lifter which can be collapsed on command.
|
|
#
?
Mar 21, 2013 19:28
|
|
|
Dwight Eisenhower posted:I'm no Honda engineer (nor have I ripped apart my F22C yet), but the mechanical force required to displace the pin while the two outside rockers aren't riding their lobes is going to be significantly higher than when they're supported. I think you'd need to put deliberate effort into doing it wrong in order to get that pin to move such that the rockers dropped to the lobe. I completely agree. The more I think about it the more I think that when oil pressure is released, the pin stays locked in to the high lift rocker due to friction until the valve is at minimum lift and the tension (and therefore friction) is relieved from the pin, at which time it retracts and VTEC is disengaged on that cylinder without the harsh drop to the cam if the pin was forcefully retracted while the valve was open. The application of oil pressure should lock all vales into high lift within two crank revolutions, and when it is released within two revolutions all valves will be back on low lift. As far as hysteresis goes, they just don't want you holding right at VTEC activation and flipping back and forth; so VTEC engage would hypothetically be set at say 4500 RPM and disengage would be 4400 RPM to keep it from quickly activating and deactivating when you are right at the switch point. Same thing as ECU controlled electric fan on/off temperatures and TCC lockup on auto vehicles. Krakkles posted:Also: This would be impossible since there is only one VTEC solenoid for all rockers, and there is never a time when all the rockers for every cylinder are in contact with all three lobes. Some valves will be open at all times.
|
|
#
?
Mar 21, 2013 21:11
|
|
|
http://www.theonion.com/articles/man-with-strong-brand-loyalty-willing-to-kill-for,31761/%5C I've never actually owned a Mazda (driven quite a few), but I would support this.
|
|
#
?
Mar 22, 2013 04:33
|
|
|
Ugh, I'm being trolled by Jalopnik. I like the idea, but apparently Corvette and Camaro aren't names worth keeping, while poo poo like the Vega and Biscayne that no one alive remembers get ressurected? While the new Camaro may be more of a Chevelle in spirit it's very dsitinctly styled as a Camaro, so that would be troublesome. This was posted in the comments, which is better, except I would replace the Spark with Chevette, as historically the Chevette was the cheapest car in the lineup.  But that leaves no room for Corsica, Lumina and Celebrity. 
Throatwarbler fucked around with this message at 04:43 on Mar 22, 2013 |
|
#
?
Mar 22, 2013 04:40
|
|
|
That and I figured the Aveo would be a name GM would want to distance themselves from. Of course I was under the impression that the Sonic was a completely different car from the Aveo but Wikipedia is telling me it's just the second gen Aveo.  I thought the Sonic was getting great reviews but we'll see how they hold up a few years down the line.
|
|
#
?
Mar 22, 2013 05:35
|
|
|
The first Aveos were unmitigated poo poo the moment they rolled off the assembly line.
|
|
#
?
Mar 22, 2013 05:53
|
|
|
The Aveo doesn't have as much heritage, true, but it's called the Aveo in every other market in the world and has been for a while so in the interest of continuity it's probably better to keep it.
|
|
#
?
Mar 22, 2013 05:58
|
|
|
Throatwarbler posted:Ugh, I'm being trolled by Jalopnik.  About two-thirds of that image is complete poo poo."Task Force" is the name of the cheap off-brand tools they sell at Lowes. The name also sounds like a total gimmick because they want you to think their truck is doing Important Things(tm). And "Advance Design", what the gently caress? I don't see what's so bad about "Avalanche". "Kingswood Estate". It's an SUV, not a stuffy manor in the Scottish countryside. It also goes without saying that if they drop the Corvette name, they will have taken a huge, steaming dump on a successful and well-established brand.
|
|
#
?
Mar 22, 2013 05:58
|
|
|
Awesome cars don't need to idle well. 2011 Le Mans 787B lap https://www.youtube.com/watch?v=81zhOQ5PvaE Dan Millen pegging a dyno https://www.youtube.com/watch?v=xHDzGLjYh4M
|
|
#
?
Mar 22, 2013 05:59
|
|
|
Why is a picture of dropping the name Corvette and bringing back car names that nobody in the current car buying market remembers in this thread? That picture clearly goes in awful automotive poo poo. Those names read like a Grand Theft Auto designer created them.
|
|
#
?
Mar 22, 2013 07:24
|
|
|
Cenodoxus posted:
 
|
|
#
?
Mar 22, 2013 07:40
|
|
|
I have found the russian holdbrooks   ads http://www.yaplakal.com/forum2/st/0/topic555998.html   
|
|
#
?
Mar 22, 2013 08:03
|
|
|
I saw this at the supermarket and it made me smile.
|
|
#
?
Mar 22, 2013 11:41
|
|
|
Throatwarbler posted:Ugh, I'm being trolled by Jalopnik. Why the hell does anyone even click on that sack of poo poo website?
|
|
#
?
Mar 22, 2013 11:42
|
|
|
jonathan posted:Awesome cars don't need to idle well.
|
|
#
?
Mar 22, 2013 13:27
|
|
|
Powershift posted:I have found the russian holdbrooks
|
|
#
?
Mar 22, 2013 14:22
|
|
|
Helped my wife's parents move into a new condo in Miami and this was parked in the same tiny parking lot:   At first I thought it was a terrible Koen'g repo but then I checked their website and it's not really terrible. Homepage: http://www.ddrmotorsport.com/index.php From their flickr page, the interior, a little spartan:  If nothing else, hot chick: http://www.flickr.com/photos/63724961@N04/6123233809/in/photostream netwerk23 fucked around with this message at 14:37 on Mar 22, 2013 |
|
#
?
Mar 22, 2013 14:25
|
|
|
No plates?
|
|
#
?
Mar 22, 2013 14:42
|
|
|
FL has no front plates, and the rear could be hidden in the shadow under that valence. In the three days I was there it never moved, and the neighbor kid said he hadn't seen it moved recently either. It was clean though, so someone is caring for it.
|
|
#
?
Mar 22, 2013 14:52
|
|
|
Anjow posted:I saw this at the supermarket and it made me smile. Dammit, I want a Hilux. I see them when I travel, then I get back to the US and I am sad.
|
|
#
?
Mar 22, 2013 14:56
|
|
|
Powershift posted:I have found the russian holdbrooks Wow, that thing looks awesome in the green he repaints it in. It's probably a loving riot to drive too. EDIT: It's also loving hilarious how he digs it out of the snow mid thread.
|
|
#
?
Mar 22, 2013 14:57
|
|
|
kimbo305 posted:Cherry Shadow ES: It may have been debaged, stuff swapped, but if it was a turbo car, it would have had a badge on the fender and a hood bulge with stickers on the sides, most of them with the refreshed front end like that were either 2.5L NA or the Mitsu V6. 4 Door, Turbo, "refreshed front" Shadows are very, very rare. Most P-Body survivors these days are the V6 That would have a v6 badge too, so I would guess its the NA 2.5. God I know way too much about a car nobody cares about. There is a 72 Year old lady I check in every so often who has a ~32K 4 Door with the super-rare Variable Turbo, T-IV Motor in it. Possibly the world's rarest Turbo Dodge that isn't a Shelby. My friend who works AAA found it one day about it when he was called in to put a battery in it. They were apparently built 10 for Chrysler Execs, and this one ended up in the Used-Car auction circuit where she bought it in 95. Hope to buy it before she drives it into the side of a bank. Mighty Horse fucked around with this message at 15:14 on Mar 22, 2013 |
|
#
?
Mar 22, 2013 15:09
|
|
|
Mighty Horse posted:
You've made this day a special day by just your being you. There's no person in the whole world like you. And I like you just the way you are.
|
|
#
?
Mar 22, 2013 15:13
|
|
|
Paul Boz_ posted:Those names read like a Grand Theft Auto designer created them. This strikes me at the most GTA car I've seen in real life. It looks like a bunch of different cars melded together, has this completely amorphous name, and the interior isn't very detailed. I want to just open the door, toss out whoever was inside, and drive away until I got where I was going then just abandon it.
|
|
#
?
Mar 22, 2013 15:26
|
|
|
davebo posted:and the interior isn't very detailed.  indeed. I've seen better detail and styling in arcade simulators.It is a kit car though, so they (unfortunately) sacrificed a good deal of interior styling and detail in the name of low cost and easy assembly. Anyone with the skills and tools to build one should be able to dress up the interior to their liking.
|
|
#
?
Mar 22, 2013 15:59
|
|
|
davebo posted:This strikes me at the most GTA car I've seen in real life. It looks like a bunch of different cars melded together, has this completely amorphous name, and the interior isn't very detailed. I want to just open the door, toss out whoever was inside, and drive away until I got where I was going then just abandon it. 9/10ths of the exterior is pure McLaren F1. The other 1/10th of the car ruins it
|
|
#
?
Mar 22, 2013 16:04
|
|
|
Mighty Horse posted:It may have been debaged, stuff swapped, but if it was a turbo car, it would have had a badge on the fender and a hood bulge with stickers on the sides, most of them with the refreshed front end like that were either 2.5L NA or the Mitsu V6. My first car was a Shadow with a 2.5 NA. It was so slow, but would just keep on going. I always keep my eye out for a turbo one to buy, but it's pretty much impossible to find a clean one now a days.
|
|
#
?
Mar 22, 2013 16:09
|
|
|
zinc68 posted:9/10ths of the exterior is pure McLaren F1. The other 1/10th of the car ruins it It's hard to tell but the fake carbon fiber headlight panels had LED 'eyebrows'. Tacky.
|
|
#
?
Mar 22, 2013 17:27
|
|
|
Saw this at QT. I rather liked it. Had to chortle at the hellafunctional sticker. Then I came across this.   
|
|
#
?
Mar 22, 2013 17:28
|
|
|
Maker Of Shoes posted:Saw this at QT. I rather liked it. Had to chortle at the hellafunctional sticker. so loving nice. Also, I miss Quiktrip's, believe it or not. Diabeetus in a cuuuuup!
|
|
#
?
Mar 22, 2013 17:31
|
|
|
Carteret posted:so loving nice. Also, I miss Quiktrip's, believe it or not. Diabeetus in a cuuuuup! I loving love QT's. Their stores are so nice and clean.
|
|
#
?
Mar 22, 2013 17:34
|
|
|
Cenodoxus posted:
Advance design was the name of Chevy trucks made from 48-55, Task Force was the name from 56-60.
|
|
#
?
Mar 22, 2013 17:46
|
|
|
|
|
#
?
Mar 23, 2013 09:21
|
|
|
|
| # ? May 16, 2024 19:14 |
|
|
            
|
|
#
?
Mar 23, 2013 13:36
|
|
