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How to best bush the diff?
DIY Si - 15/5/14 at 09:53 AM

I'm in the process of building the transmission tunnel for my Sprite at the moment, and my diff will be hung off the back of it on a separate bolt in cage. This should allow me to alter things easily in the future, as well as use a different diff if need be although it is designed with the Sierra diff in mind.

One thing I'm considering is to not solid mount the diff. But I am unsure if it's worth the bother. Solid mounting it is easier and will make a lighter cage, but will transmit what ever noise and vibration there is to the tunnel/shell. Bushing it is not really much harder, but will taker longer to make if I do it on the cradle. I know that just about all kits, with the exceptions of Westfield and Caterham, solid mount their diffs. Is it just because it's easier/cheaper to do it this way? Or am I over doing my thinking and I should just get on with it?

Ben_Copeland - 15/5/14 at 11:52 AM

As you've said most are solid mounted and personally I don't feel any vibration from the Sierra diff.

owelly - 15/5/14 at 11:53 AM

Personally, I'd like to know if the diff was making any grumblings! Solid mount it so you'll be able to feel and hear what's going on.

DIY Si - 15/5/14 at 11:56 AM

quote:
Originally posted by owelly
Personally, I'd like to know if the diff was making any grumblings! Solid mount it so you'll be able to feel and hear what's going on.


Given that any diff I use is likely to be second hand, and of unknown condition, that's not a bad way of thinking about it and something I hadn't considered.

I think I'll solid mount it for now, as I can always make a second cage with bushes in if I feel like it later.