Chain Drive Differential

[ewan_me]

Hi does anyone know how to convert a QUAIFE ATB DIFF-FOR 'A' SERIES MINI to be used with a chain sprocket for a bike engined application? Is it a case of plugging up the holes that would allow oil into the diff with grease nipples?

Has anyone done this? Or know of a standard diff that can be converted for bike engine use?

Thanks.

[Minicooper]

Quaife do a bike engined chain driven sealed diff which you can buy the sealed bearings, sprockets, etc of the shelf, but you would then need to get custom driveshafts made as they are based on the fiesta/escort diff.

You can use an quaife atb for a mini meaning you could use the standard driveshafts etc, but as far as I know you would have to sort out the bearings/mountings and sealing on your own.

I have used the fiesta/escort dif on my mini and will get custom driveshafts made here is a piccie

http://www.16vminiclub.com/gallery/displayimage.php?album=687&pos=17

Cheers
David

[cables]

http://www.westhouse.plus.com/chaindrive1.htm

[ewan_me]

Thanks for the info gents, much appreciated. I've just got my hands on a very tidy 1983 Mayfair, so let the games begin!!

Thanks again.

[Marcus Nordblom]

http://www.westgarage.co.uk/forsale/kits/kit1.html

[R1_Manx]

I believe there's 2 types of ATB diffs for the Mini. The type we're using has about 8 small holes in the bolt-ring face, these need to be plugged though I suspect they're designed to allow circulation/escape of oil so how advisable that is I wouldn't like to comment on.

Sealed bearings go on the diff, then there's (non-oiltight push in adaptor spline jobbies) then the pot joint that the oil seal sits on. Easiest solution would seem to be a tophat shaped can filled with oil over the diff body bolted to the bolt ring and sealed with O-rings/sealant. Combined bearing carrier (press fit the bearings) and oil seal housing to prevent oil escaping from the spline adaptor.

Re-drill the sprocket to the correct PCD in the spare, undrilled webs.

You won't get the diff in the stock location AND a bike engine inside the stock silhouete without some serious witchcraft.

[The Mighty Mallott]

http://www.pro-motive.co.uk/4.html these guys do :lol: ish!!

I studied it quite hard and they use 2 mini diff casings bolted together, a mini diff in there, not sure how they get the sprocket to turn the diff though. at first i thought they had just attached the sprocket to a pot joint, this would mean the car would speed up turning one way or slow down going the other, i assume that would give awesome torque steer as well.

Mat

[MadMatt]

i believe the fact that thery have the engine fitted around the 'wrong/right" way (???) they then use a chain to drive a jack shaft to then drive a gear,,, which then drives the diff crown wheel, so basically the whole lot is actually spinning the wrong way until it hits the final drive gear which makes it turn the right way :-)
iff you get what i`m saying... :-)