commando crankshafts

hi all
does anyone here no if the dowel hole on the crankshaft flywheel off norton commando 850 is the same diameter between mk2 and mk 3
because i am looking at getting molnar flywheel which is made for early crankshafts mine is a mk3 crank i allready no that i have to drill the bolt holes out to 3/8 but what about the dowel hole

The 850 Mk3 crank has a dowel stud...

...earlier cranks had a dowel.

L.A.B. said:

The 850 Mk3 crank has a dowel stud...

Andover Norton Parts Drawings - Genuine Andover Norton Factory Parts - Commando Parts

Andover Norton Parts are the only Norton spare parts in the market manufactured to original drawings, within the factory-approved tolerances, from the correct materials, and with the correct finish.

andover-norton.co.uk

Andover Norton - CRANKSHAFT DOWEL STUD - 06.5671

CRANKSHAFT DOWEL STUD

andover-norton.co.uk

...earlier cranks had a dowel.

Andover Norton Parts Drawings - Genuine Andover Norton Factory Parts - Commando Parts

Andover Norton Parts are the only Norton spare parts in the market manufactured to original drawings, within the factory-approved tolerances, from the correct materials, and with the correct finish.

andover-norton.co.uk

Andover Norton - DOWEL (NMT 2105) - 06.7558

DOWEL (NMT 2105)

andover-norton.co.uk

Click to expand...

But, in answer to the question - if the dowel & dowel stud are the same diameter then the earlier dowel with fixing plates would work well, no?
...and knowing Norton, they would not change tooling unless absolutely necessary!

robs ss said:

But, in answer to the question - if the dowel & dowel stud are the same diameter then the earlier dowel with fixing plates would work well, no?

Click to expand...

I don't believe they are the same.

why not ask Mr Molnar himself - if its made to order perhaps he'd make it for the MK3?

Molnar should speak for himself, but the answer when I made an enquiry for a variant of his billet crankshaft was, he needed to make a minimum of 10 pieces, and I had to provide the engineering drawings.
Fair enough, the man needs to get his merchandise sold. Count me in for a couple of samples, if you are able to place a bulk order.

What wonders me is, why doesn't AN produce a Mk3 billet crankshaft? Yes, several dimensions are different to the existing version, but the basic layout is identical. and the manufacturing sequence should be identical. Few preparations would be necessary, so paying for development costs should require only few samples sold.

- Knut