Originally posted by Turtlemaster
anyone else break a out drive cup for the center shaft. broke two yesterday. first one didn't even know it was broke until i turned car on for main and saw center shaft flopping around, thanks to yoks design was able to change it in about a minute or so, but next one didn't last one lap. i was running a 9x2 cobalt with a one way. rough track, pavement, on thought i had was that when hitting a bump the front end unloads a bits and spins faster and when it hits the ground the shock is breaking the cup. does this make sense. i pulled the shaft out last night, all is good there.
I solved that problem when running mod by putting the O-ring in the front cup and removing the o-ring from the rear cup. This allows the center drive shaft to sit deeper in the rear cup. The further out it sits in the cup, the weaker the cup is. You can use the Suzuki cups but they are much heavier than the plastic.
