To answer the question about F/R native split in Scoobies vs Evos, most of the Scoobies use a planetary center with some rear bias, while all Evos have spider-type centers, so they're 50/50. Of course, as you said, that's before the DCCD or ACD steps in, after which the native torque split of the diff becomes much less important.
If someone would like to explain how a SADEV works (in comparison to, say, a Haldex), I'd appreciate it. I will also go off and try to learn for myself. |
modernbeat Jason McDaniel Infallible Moderator Location: Dallas, TX Join Date: 12/14/2007 Age: Possibly Wise Posts: 401 Rally Car: 1963 SAAB Historic, 1995 Impreza Open Light totaled at WRC Mexico, 2005 STi Pikes Peak winner |
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Can you explain that a bit more, please? I don't if what you wrote means that the center is effectively a spool with a clutch on the connection to the rear diff (like a Haldex) or if it means that there's a center diff of some sort with a clutch-type limited-slip device (like a DCCD).
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modernbeat Jason McDaniel Infallible Moderator Location: Dallas, TX Join Date: 12/14/2007 Age: Possibly Wise Posts: 401 Rally Car: 1963 SAAB Historic, 1995 Impreza Open Light totaled at WRC Mexico, 2005 STi Pikes Peak winner |
It's the spool/clutch thing. Jason McDaniel |
john vanlandingham John Vanlandingham Infallible Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
You mean a ramp and roller clutch like the input hsaft on a Saab 96? That was what was in Haldex diffs at some point. John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
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john vanlandingham John Vanlandingham Infallible Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Faggot. John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
Creech Scott Creech Mod Moderator Location: Jane, MO Join Date: 12/02/2012 Age: Possibly Wise Posts: 415 Rally Car: Audi 90 Quattro (WIP) |
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This is a bit beyond the original question, but do folks like Vermont use this system because the best available systems are like this (because of, e.g., WRC rules) or because they really want a system that can instantly detach the rear diff (e.g., when yanking the hand-brake)?
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john vanlandingham John Vanlandingham Infallible Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
Look at the poor lamented tread started by one of the more capable people here Paulinho--- look at the 50-60 post by one guy who has never touched the inside of a rally shock or damper or strut.. If we want this forum to ever be useful then you must help.. I have gotten dozens of calls or PMs saying "the guy is a total tool---but I don't want to get involved." Nerd/geek/jerk offs have nearly ruined every forum I have ever looked at.. Oh gee golly I wonder what some ____________ (insert some unobtainium gee gaw) is using, is it better than ___________ (insert some other unobtainium flapdoodle).... If anybody else had asked we might imagine they were a rally person curious and thinking of ways of trying to DO something. This typical example of an autocrosser in all the worst possible connotations of that word--is not a rally guy, and his inanities do nothing... As I have said, he has thousands of other forums perfectly suited to what he needs. This isn't it. You can help. Complaining doesn't help.. John Vanlandingham Sleezattle, WA, USA Vive le Prole-le-ralliat www.rallyrace.net/jvab CALL +1 206 431-9696 Remember! Pacific Standard Time is 3 hours behind Eastern Standard Time. |
zerodegreec Oh look, waffles.... Ultra Moderator Location: Earth Join Date: 03/06/2012 Posts: 103 Rally Car: see you on the stages |
A fully active Front, Center and Rear Diff was the height of technological advancement in the sport. You can't get the traction like they did in the Early 2000's anymore under FIA rules. 2005 was the end of the active front and rear diffs. The teams could continue to use the active center and I think that is why the STI and Evo continue to have such good controls associated with Motorsports. The technology is directly linked to the rules in the WRC between 2006 and the subsequent removal of active centers in 2011.
I think Vermont is using the best technology available for the rules in the RA series. Intercom and electronics dude. www.zerodegreec.ca |
Fclevelandwrx Foard Cleveland Infallible Moderator Location: Clover South Carolina, USA Join Date: 10/03/2013 Age: Settling Down Posts: 85 Rally Car: 2001 ZX3 |
After reading all of that I think the conclusion is open cars run their own diffs possibly based on what wrc does but mainly focuses on being able to keep the front wheels spinning while the back are locked. Super fun kenny block driftiness… truuuuu
Foard Cleveland Blue Branch Rally Team http://www.performancefriction.com |
Then maybe try fucking off ... as in, not sticking your nose into my threads. If you're correct, my threads will get no replies and I'll probably stop posting. As it stands, given that this is one of the few forums where many folks know more than I do, this is one of the few places where I can get answers to certain questions. And, in several cases, such as this thread, I have gotten the answers I seek. So why not go back to jerking off into the tubes you use to make shocks? Or do I owe the honor of your presence here to inter-ejaculatory refraction? |
Fclevelandwrx Foard Cleveland Infallible Moderator Location: Clover South Carolina, USA Join Date: 10/03/2013 Age: Settling Down Posts: 85 Rally Car: 2001 ZX3 |
This is a thread that belongs on special stage man, these degenerate old men don't want to answer questions that don't have to do with running cars that barely run. hahaha John will beat your ass but he's a good guy. Foard Cleveland Blue Branch Rally Team http://www.performancefriction.com |
Morison Banned Senior Moderator Location: Calgary, AB Join Date: 03/27/2009 Age: Ancient Posts: 1,798 Rally Car: (ex)86 RX-7(built), (ex)2.5RS (bought) |
You say that like it's a bad thing. (It ain't my thing, but who are any of us to judge?) First Rally: 2001 Driver (7), Co-Driver (44) Drivers (16) Clerk (10), Official (7), Volunteer (4) Cars Built (1), Engines Built (0) Cages Built (0) Last Updated, January 4, 2015 ![]()
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