On Sat, 2 Mar 1996, Ashley Southgate wrote:
> Hi The simple answer is that the output shaft for most overdrives is the
> same size & also the cog,how do they get different gearing is simple,if you
> study the output shaft you will see what is called a one worm start,a 2 worm
> start,up to a 6 worm start.A 1 worm start has one just one line that goes
> around the shaft,a 3 worm star t has 3 lines that are in parrarell,all this
> does is make the wee cog wheel go 3 times as fast as a 1 worm start, - SNIP -
> The number of worm start is set to the wheel size of the car,the PI car has
> 13 inch wheels, TR has 15 inch wheels.- SNIP - Hope this little knowlege is
> understood. - SNIP - best wishes Ashley
Ashley,
thanks for this interesting info. I'll have to take your word on the worm
drive appearance as as I'm sure you'll appreciate I'm not planning to
dis-assemble an OD which I paid for somebody else to recondition (one of
the main reasons for getting someone else to do the job so that if it
goes wrong they're the ones who have to fix it...).
So it sounds to me as if my recon OD comes from something other than a
Vitesse (i.e. something with wheels other than 13 inch) and therefore has
the wrong worm start. That certainly makes sense, and I'll put it to
Rimmer Brothers just as soon as I've finished catching up on my mail to
see if anyone else has come up with any brainwaves.
Cheers,
Andrew.
|