Still brainstorming this project, gear changing has been on my mind, bell cranks and rose joints is obviously what a few of you use, has anybody got success with using a single cable, possibly something like a auto box shifter cable which allow push and pull actions, something like this--

http://bmracing.com/?wpsc-product=super-duty-race-shifter-cables-3ft-super-duty-cable-eyeletthread-ends

Push pull cable is the way to go
varios threads, on this but defo easiest option and smooooth
http://www.locostbuilders.co.uk/viewthread.php?tid=172948

Mine is a 6mm Teflon lined cable. It had a 5mm one in before but it snapped after few race weekends and test days. Mine came from my cars manufacturer, Paul at Spire Sports Cars. I believe he can have them done to any size

mmm, Im liking this site, People seem to think along the same lines as I do.

My thoughts on steering wheel wont allow me to use a paddle, so Im going to use a lever in the normal position, my Idea was to mount the lever thru a cortina void bush and use the bush as the pivot with the void front and back, so I have a self centering lever that has a ease of movement going front to back, then fit the cable to the underside of the lever coming out of the bush, that way, on the prototype I can alter the shift ratio to suit my feel.

quote:

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Originally posted by ian.stewart
mmm, Im liking this site, People seem to think along the same lines as I do.

My thoughts on steering wheel wont allow me to use a paddle, so Im going to use a lever in the normal position, my Idea was to mount the lever thru a cortina void bush and use the bush as the pivot with the void front and back, so I have a self centering lever that has a ease of movement going front to back, then fit the cable to the underside of the lever coming out of the bush, that way, on the prototype I can alter the shift ratio to suit my feel.

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ONLY LIKING IT/
You'll soon love/live it

I used an auto box cable on mine, works a treat and more substantial than a lot of the specialist ones

Measure up and try ARD, my custom cable came in at £40.




http://www.ardracecars.com/

Cable is a good option. Make sure you can fix a strong bracket at each end of it though, as any flexing will make the change feel less direct.

For my car, I've gone down the route of rods and levers. I couldn't get large radii on my cable, and there was a bit of stiction as a result. Using rod ends in my setup brings friction to a minimum and changing gear (although isn't moving yet this summer!) is as direct as I can get it. I was finding false neutral a lot last time the car was on the road, due to a lot of slop in the gearchange mechanism.

I'll post a photo when I've reassembled everything, it might give you some inspiration!

p.s. I've gone for paddleshift but the theory is the same if you want to use a gear lever with rods etc.

James