Today,for the 3rd time my trigger wheel got bad.
Its a stock 60-2 trigger wheel from the BMW M20 engine,the rubber that is in the middle of the wheel is cracking....the all 3 wheels where in good shape when i was putting them on the engine.Firs one that was originally on the engine lasted for 2 years,this summer in drift event in Hungary i got it cracked (rubber part) i replaced the wheel at the track and i was going ok,for one race,then again,same problem,i replaced it,one race...crack again.The 3rd one that i mounted died today.I dont see a crack in the rubber like on the other 2 wheels (its still on the car) but i have Trigger errors at 5000rpm and engine starts to missfire,sounds like a rpm limiter.When i took the VR sensor off it was damaged by the teeth,so i thought maybe the sensor was problem,but no,same thing with the other sensor but i had to made a bigger gap between sensor and the wheel (max 2mm gap now).
Maybe this is happening because of too much on/off throttle at high rpms where engine has big power (in drifting)....can i made a new 60-2 wheel without rubber part and is here someone who has a cad drawing for it? I suppose rubber is for "amortization" in the on/off throttle situation....will it hurt the crankshaft if i made the new wheels without rubber?
Tnx
Gogi
