Id give up my left toe to drive one of those car's for the weekend! Damn those trannys make noise!
Crazy Fast GT Racer
- Thread starter Van
- Start date
http://www.npcompleteperformance.com/
i believe they designed the 1st one for the SRT-4 but they have it for quite a few cars now, wonder if we could get them to develop one for our beloved mkiii supras. oh ya and you can get it with a built in programable 2-step
i believe they designed the 1st one for the SRT-4 but they have it for quite a few cars now, wonder if we could get them to develop one for our beloved mkiii supras. oh ya and you can get it with a built in programable 2-step
is that a GT2 Cup car?
anyway. There are numerous way to implement the flat shifting.
With DBW, you can do a throttle closure of X percent based on moving up a gear or throttle blipping based on moving down a gear. As IJ. stated it is based on a strain gauge and of course have a nice high end ECU (MoTeC, Pectel, Magnetti Marelli, OBR, Bosch, EFI Technologies, etc). Flat shifting is the "old" way of doing it by cutting the ignition system while keeping the throttle at 100%. With DBW. The Throttle can be closed enough to match speed with where the next gear needs to be and then open to 100% in a gradual but super quick slope. It keeps the seq gear changes as smooth as ANY luxury sedan.
That is NOT a "shift without lift setup". The idea behind shift without lift is to match the lower RPMs of the higher gear by cutting enough power to slip the tranny into gear if you were to not have syncros per say.
anyway. There are numerous way to implement the flat shifting.
With DBW, you can do a throttle closure of X percent based on moving up a gear or throttle blipping based on moving down a gear. As IJ. stated it is based on a strain gauge and of course have a nice high end ECU (MoTeC, Pectel, Magnetti Marelli, OBR, Bosch, EFI Technologies, etc). Flat shifting is the "old" way of doing it by cutting the ignition system while keeping the throttle at 100%. With DBW. The Throttle can be closed enough to match speed with where the next gear needs to be and then open to 100% in a gradual but super quick slope. It keeps the seq gear changes as smooth as ANY luxury sedan.
grimreaper;1149624 said:
That is NOT a "shift without lift setup". The idea behind shift without lift is to match the lower RPMs of the higher gear by cutting enough power to slip the tranny into gear if you were to not have syncros per say.
They guy has a DSG (semiautomatic manual transmision... ) or direct shift transmision. They have been around for years ( WRC, GT, F1... ) and it is much diferent than normal manual transmision. BMW and VW are few of the manufacturers that have those in production cars now days.... It takes 20 ms to shift gears. But it is hydrolicly operated transmission.
There are variations that would get somewhat the same response. Dawg box is when teh sincronisers are eliminated and special addapters are welded to the gear cone to alow faster shifts and also takes more abuse. I might be able to snap a picture of one of those...
i have a pdf file that explains the operation but it is too big to upload.
There are variations that would get somewhat the same response. Dawg box is when teh sincronisers are eliminated and special addapters are welded to the gear cone to alow faster shifts and also takes more abuse. I might be able to snap a picture of one of those...
i have a pdf file that explains the operation but it is too big to upload.
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2JZ_MA70;1151326 said:
No they are not hydraulic operated
Basically It is either a
Quaife
Xtrac
Those are TRUE sequential transmissions with straight cut gears. Porsche Cup cars use Quaife btw
http://www.porsche.com/usa/eventsandracing/motorsport/racingcars/911gt3cup-s/technologyandconcept/
Ascari A10... Notice the same shifting, MoTeC dash, BMW engine...
http://www.youtube.com/watch?v=gQC5mYx3cE4
http://www.youtube.com/watch?v=gQC5mYx3cE4
