Peugeot gearshift system

[evo]

Hi. I'm wondering if anyone here has any idea where I can find information on how the two-ring push/pull gearshift mechanism in the 206 WRC works. I was thinking about replicating something like that for a Formula SAE car. Any help is greatly appreciated. Thanks a lot.

[imull]

when they pull the ring up or push it down a circuit is created that sends an input to teh electronic acutator.

At the same time an impulse (in the Hayundai at least and i would guess the same for all) cuts the power from the engine (no spark) and actuates teh clutch.

Once this has happened teh actuator moves and causes the gear change.

It is as simple as that though the entire shift process can take as little as 0.15 seconds.

If you watch the Citroens you can see teh manual shift lever move at teh same time.

One F. Student car that I know of ran with cable attached to the ring and was still a mechanical shift.

[madmat666]

this is for formula student right? if so i guess youll be using a 600cc bike engine that nearly always come with a combined transmission.
as you dont need to use the clutch on upshifts, would a wrc style gear change benifit the speed of the shift at all?

[avsfan733]

whether or not it benefits shift speed, which would be hard to do, it should be easier on the transmission and ease the drivers workload by allowing both hands on the wheel

[evo]

Exactly. We use a pneumatic system to rotate the shift drum on the bike engine up or down. Since the level of driving experience is seriously lacking, we just feel it's better to have the drivers hands on the wheel at all time. Once the system is fully completely finished (probably not this year) it will increase shift speed as it will have an ignition cut for upshifts and will engage the clutch when necessary.