[QUOTE=dan_vector;12648498]
Originally Posted by
DIRTMONKEY
Ok thanks a lot. The other issue I have is in the diff build. I'm used to gear diffs and don't have much experience with ball diffs. I'm using the correct serpent spur gear however when I put the balls in the holes in the gear they sit very proud. Should the balls be able to pass through the spur or be a tight fit? Do I need to open out the holes slightly? Now the diff is very tight so something is not right as any looser it just slips.
I don't own a Serpent F1, but the balls should be right in the center of the spur. You probably have to pop them in, that's actually a nice feature on some spurs that prevents losing the balls too easily. Some brand of spurs are "open" on both sides of the balls holes, can be a bit tricky to build; some are open on one side (many AE buggy diffs are like that IIRC) some are closed on both sides and you just have to pop the balls in or out. (Kimbroughs, Dumor are like that.) HTH