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Race car air shifter Videos

Custom Air Shifter

This is the electro-pneumatic air shifter I designed and built for my motorized recliner chair project. The engine is a 125cc Lifan with a 4-up, semi-auto ...

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Luvstruck commented on 13 Apr 2016
Excellent idea, and a really nice job Chris. Been planning on doing something similar, except for each time the transmission shifts, it will also work the clutch. Experience is telling me this will be no push over, and may not work at all. It will have to be heavy, like an automotive solenoid to have enough strength to move it. Which will draw a lot of amps, so it will be interesting, playing around with it.
https://gp4.googleusercontent.com/-UNAkk0dNTfI/AAAAAAAAAAI/AAAAAAAAAAA/-WAaPdAeH-E/s48-c-k-no/photo.jpg?sz=64
keegancdr commented on 11 Sep 2012
ok i could really use some help, im trying to design and build a pnuematic shifter like what you have, im just trying to figure out the electronics portion and shifting cylinder that you used in your motorized chair. is there a detailed drawing of everthing and how its hooked up? could you please help me out this is for a formula style racecar my university is building ! please message me on here! thank you!
https://gp3.googleusercontent.com/-we3-EypmuA0/AAAAAAAAAAI/AAAAAAAAAAA/k7qFt2JzmVE/s48-c-k-no/photo.jpg?sz=64
ChrisTheDIYguy commented on 21 Sep 2011
It's a Viair 450c compressor that can go up to 250 psi. I think it was around $200 on ebay but I probably could have gone with a smaller model since I never go above 175psi. Great compressor though.
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Vivek Mahajan commented on 25 Jan 2015
A nicely done project..although I had some doubts:- 1) how do you manage the clutch while up-shifting or downshifting while driving? 2) while driving does the compressor use power from engine?
https://gp3.googleusercontent.com/-we3-EypmuA0/AAAAAAAAAAI/AAAAAAAAAAA/k7qFt2JzmVE/s48-c-k-no/photo.jpg?sz=64
ChrisTheDIYguy commented on 02 Jan 2013
I didn't need to use relays for the solenoids because they don't draw much current. I wired them directly to a 12v battery and used a single throw double pole center off switch to control them.
https://gp5.googleusercontent.com/-xU5j9gYhAdA/AAAAAAAAAAI/AAAAAAAAAAA/IrEJxRfEphI/s48-c-k-no/photo.jpg?sz=64
Diesel Zuk commented on 21 Sep 2011
I like, I am going to build one for my drag riding mower, where did you buy your cylinder and for how much? and whats the stroke on that cylinder?
https://gp3.googleusercontent.com/-we3-EypmuA0/AAAAAAAAAAI/AAAAAAAAAAA/k7qFt2JzmVE/s48-c-k-no/photo.jpg?sz=64
ChrisTheDIYguy commented on 21 Feb 2012
It's a double acting 1-1/8" (I think) diameter cylinder with a 3" stroke, (1.5" in either direction). I got it from Grainger Industrial Supply.
https://gp4.googleusercontent.com/-UNAkk0dNTfI/AAAAAAAAAAI/AAAAAAAAAAA/-WAaPdAeH-E/s48-c-k-no/photo.jpg?sz=64
keegancdr commented on 11 Sep 2012
im mainly trying to figure out what i need to run the cylinder i have, do i need to run relays to the solenoids or what? how did you run them?
https://gp3.googleusercontent.com/-3v2fshoNx0c/AAAAAAAAAAI/AAAAAAAAAAA/skXhTfVrBZQ/s48-c-k-no/photo.jpg?sz=64
gustavo s commented on 21 Aug 2013
as for the system to find the neutral point? because the cylinder rod despleza always the same number of inches forward to back ......????
https://gp4.googleusercontent.com/-3lYFGESVuQQ/AAAAAAAAAAI/AAAAAAAAAAA/RV-X6HmbB2E/s48-c-k-no/photo.jpg?sz=64
aaron chai commented on 05 Mar 2013
very nicely done. may i know how you make your double acting cylinder stop in the middle instead of going all the way?
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Skylar Squillace commented on 18 Dec 2013
is the cylinder just re centered by the torsion spring on the shift arm?
https://gp3.googleusercontent.com/-dCfvSqIW4Dg/AAAAAAAAAAI/AAAAAAAAAAA/xkP8l7JD3ZU/s48-c-k-no/photo.jpg?sz=64
327danio commented on 24 Jul 2013
Where did you buy the valves and the air compressor, and for how much???
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Diesel Zuk commented on 21 Sep 2011
and where did you get that compressor at? I like the chrome finish
https://gp3.googleusercontent.com/-we3-EypmuA0/AAAAAAAAAAI/AAAAAAAAAAA/k7qFt2JzmVE/s48-c-k-no/photo.jpg?sz=64
ChrisTheDIYguy commented on 02 Jan 2013
yeah the turning sucks on pavement, I can only do gradual turns
https://gp4.googleusercontent.com/-zxU9ubG03PA/AAAAAAAAAAI/AAAAAAAAAAA/J82uHyUXrxk/s48-c-k-no/photo.jpg?sz=64
Jean-Philippe Nantel-Fortier commented on 18 Feb 2012
What is the type of the cylinder you are using?
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ErkZa01 commented on 20 Aug 2014
How change to gear N ?

135532 / 1965 Shelby Cobra Daytona

For more information on this vehicle visit //tinyurl.com/j8bakhe This SEMA-featured Shelby was painstakingly crafted into a world class piece of automotive ...

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Ralph Bernatz commented on 13 May 2016
820 horse - goodness me, please show us a short accelleration just from nothing to 120 miles or so, or havent you got 8 seconds of extra time? :-)
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Mad Max commented on 11 May 2016
oh my good awesome car*---*

Keith Cowie OS Giken air shifter test

OS Giken 6sp box fitted with a geartronics air-shifter system.

User Comments

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jtjudgejj commented on 09 May 2014
I've got its oil pump now so a part of it lives on
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B20 All Motor commented on 14 Jan 2013
whatever happened to this car ?
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xilovelsdx commented on 23 Jun 2009
that is so awesome
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nismolord commented on 13 Nov 2008
awesome keith

Co2 shifter testing in car

testing out the C02 shifter setup i am making. it worked on the bench, now to see how it works in the car on the actual trans it will operate, engaging the gears.

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James T (syntax) commented on 02 Dec 2014
Dude your audi is one of the sickest I've ever seen, im guessing you did most if not all of the work yourself? What tranny set up are you running? And one Las question lol, how much do you think you've got into it now that it's all finished if you don't mind me asking?

GT5 BMW M3 '07 GTS - Nordschleife - Logitech G27 clutch, w/ Shifter Mod HD!

BMW M3 Coupé GTS Build onboard gameplay at nordschleife. Steering Wheel: Logitech G27 w/ clutch, shifter mod... Car: Little Engine Upgrades, Race Air Filter ...

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Rolando Paz commented on 20 Nov 2013
Now take off traction control
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Fet Thunderdome commented on 01 Jan 2014
and racing line
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