Which longer mainshaft is better for R.E.??

kavliaris · Post by **kavliaris** » Tue Nov 27, 2012 10:29 am

Hi,I'm building a r.e. bullet 500 my2000 diesel conversion with a lombardini ld500 engine.
I'm searching for a extended mainshaft for the gearbox and I've come up with two options:
One is from henry price at 65 pounds and second is from sommer diesel at 250 euros (much more expensive)
Does anyone know which one is better actually?
thanks

henneberg · Post by **henneberg** » Tue Nov 27, 2012 4:20 pm

Hi,

Yes, my experience is to keep the mainshaft as short as possible, keeping the engine balance ( in the frame ) in mind.

Standard Enfield mainshaft length is 11" or 279mm.

The one from henry price is as far as I know the longer version standard+55 mm, the one from Sommer is standard+40 mm, the original Taurus mainshaft is standard+36mm.

Regards, Erik

Post by **Stuart** » Tue Nov 27, 2012 6:00 pm

I have extra support at one end in the shape of bearings.

henneberg · Post by **henneberg** » Tue Nov 27, 2012 6:12 pm

Stuart wrote:I have extra support at one end in the shape of bearings.

Hi Stuart,

How is the extra support made ? I am planning a housing for a needle bearing with innerring to mount in the original Taurus inner primary chaincase

regards, Erik

Post by **Stuart** » Tue Nov 27, 2012 8:35 pm

I have a standard length shaft which fits into an elongated rear on the clutch. It's the rear of the clutch that rests in 2 bearings.

Post by **Stuart** » Tue Nov 27, 2012 8:45 pm

There's a few shots in this thread that show my arrangement. A bit over engineered maybe but solid.
https://www.dieselbikeforum.com/view ... 985#p15985

henneberg · Post by **henneberg** » Tue Nov 27, 2012 9:15 pm

Oh yes, I see it that way. The clutch with the rear bearing is kept solid in a fixed place. Probably needed to cope with the Ruggerini torque,

regards, Erik

Rhynri · Post by **Rhynri** » Wed Nov 28, 2012 8:54 pm

Stuart wrote:There's a few shots in this thread that show my arrangement. A bit over engineered maybe but solid.

Better a little over (so long as you aren't blowing it out of proportion) than any under.

arnaud · Post by **arnaud** » Wed Jan 14, 2015 12:51 pm

Does anyone have a drawing with the measurements of the gearbox shaft? Since the lenthened ones seem to wobble, i am looking for a way to let it made at one piece.. at a fairer rate as the Sommer bloke offers..

And indeed which length is the best for an yanclone suited in the middle?

i think it would be best if the inner primary is bolted directly on the engine..?

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Which longer mainshaft is better for R.E.??

Which longer mainshaft is better for R.E.??

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Re: Which longer mainshaft is better for R.E.??

Re: Which longer mainshaft is better for R.E.??

Re: Which longer mainshaft is better for R.E.??

Re: Which longer mainshaft is better for R.E.??

Re: Which longer mainshaft is better for R.E.??