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Heavy Twins

Description

A technical forum for Model 7 to Mercury

650 clutch

Forums

My newly aquired 650 clutch has only 4 friction plates and apparently not enough room for 5 , so I suspect that they are dommy plates , I think 650 plates are thinner , has anyone bought the correct plates lately and from where?.

lay down gearbox

Forums

Canada calling. I have just finished assembling a basket case '53 Model 7. In static mode all gears shift up and down nicely, as they should. But in transit the gearbox shifts from 2nd to 4th, missing 3rd.

A non std carb

Forums

I have picked up a fully refurbished monoblock (by Bratby) and am thinking of fitting it to my 99 . The issue is that it’s 1 1/8” bore instead of 1 1/16 , It’s going to fit ok and will be filtered with a decent paper car unit .

Norton Atlas exhaust pipes

Forums

Further to my last silencer query will someone please recommend exhaust pipes that will actual fit my Atlas as I have heard several stories from members who say that they have bought exhaust pipes from a very well know supplier and they do not fit

Barrels

Forums

I have just been looking at the barrels on my 1959 600 dominator as both have hair line cracks they need replacing but looking at the bottom of the bottom of the barrels the liners seem to part of  the casting I’ve looked at replacement one they d

REV Counter

Forums

I am looking for a rev counter , of the type that would have been fitted to a works bike in the early 1960's , Would it have been an ATRC ?, and in a vibration proof mount perhaps RN1104 ?. Any pictures?.

Model 88 Iron Head

Forums

I’ve had my 1957 Model 88 for a couple of years. It’s in great condition but has an iron head stamped T2140. I’ve fitted the correct plugs NGKB6HS and it runs well, although perhaps a bit of pinking when opening the throttle hard.

 



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