Cita
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| posted on 7/10/04 at 06:22 PM |
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Bike Master cylinder
would it be possible to use a bike master brake cylinder for a low weigth (my single seater)car?
I intend to mount all the controls (throttle-clutch-brake-gear change)on some sort of handlebar instead of a steering wheel.
The two front callipers and one rear are from a Merc 190.
Does anyone have any idea's or know somebody who have built a electronic gear change for a BEC?
Thanks
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Petemate
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| posted on 7/10/04 at 06:37 PM |
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Electronic shift for BECs? Try Proshift (I think that's it) My lad is going to fit one to his 'Busa Rush, but they are quite pricey. Nice
though, flat-out up changes and coming down the 'box, just brake and it does it all, blipping the throttle for you etc.
Pete(Oldgit)
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pifular
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| posted on 7/10/04 at 06:57 PM |
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yeah can be pricey, best to have in mind a makeshift mechanical shift for road side repairs as all can be prone to gremlins. try kliktronic (better
one!) or techtronics in a search engine.
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andkilde
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| posted on 7/10/04 at 08:30 PM |
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quote:
Originally posted by Cita
would it be possible to use a bike master brake cylinder for a low weigth (my single seater)car?
I intend to mount all the controls (throttle-clutch-brake-gear change)on some sort of handlebar instead of a steering wheel.
The two front callipers and one rear are from a Merc 190.
Does anyone have any idea's or know somebody who have built a electronic gear change for a BEC?
Thanks
Cita, you'll have to spend a few minutes with a pair of calipers and a calculator to figure out the hydraulics.
The FSAE team I was helping out this year had a last minute hiccup when their bike masters (two mounted up to a balance bar) didn't displace
enough fluid to lock the brakes up effectively. They had to do a last minute thrash to install a new pedal box.
Measure the diameter of your master cylinder and its stroke -- determine your volume displaced (3.14*Radius*Radius*Stroke) then do similar
calculations for your calipers and compare the two.
EDIT -- when calculating what the calipers need, remember to multiply by the number of pistons.
You'll want a fair bit of safety factor between the two volumes -- i.e. more volume displaced by Master than required by Caliper, double is a
good starting point, triple is probably better. If the numbers are equal (or close to) your pedal won't get hard until it hits the floor.
And...
There was a fellow on the board who was building and selling (quite reasonably priced as I recall) electronic gear changes last year. You may be able
to find him by searching old posts or asking the BEC boys.
Cheers, Ted
[Edited on 7/10/04 by andkilde]
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