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Heavy Twins

Description

A technical forum for Model 7 to Mercury

Laydown gearbox 53 Model 7

Forums

Canada calling. I have finished restoring a '53 Model 7 and an odd oil leak has cropped up. Oil is leaking through the steel kick start sleeve and the inner cover of the gearbox. I have checked thoroughly and it is no leaking through the kick start and the steel sleeve itself. I have check the Andover Norton laydown gearbox drawing and there is an item #79 shown but not listed as Andover do not make this item. Firstly has anyone out there experienced this leakage, and second is item 79 a seal, shim etc. Any thoughts would be appreciated.

SS Camshaft ?

Forums

My Dommi 88 is fitted with an SS Camshaft ( marked T2219@3 ) it seems. Does this require Pushrods and Valve springs as used on the 650 SS and Atlas models to be fitted ? I came accross this advice in the Haynes Manual (chapter 1 -22 ) . My Cam is with Newmans being inspected for possible re-profiling and I now have 4 NOS Cam followers thanks to NOC members and the NOC shop. Thanks , Wayne.

 

rear brake plate

Forums

I bought a rear brake plate for my Norton 650ss - advertised as Dommie plate but the brake shoe pivots have wire circlips instead of retaining plate/tab washer and bolts.

I assume it's an earlier plate from ES2 or very early twin.

Does anyone have any knowledge/experience of these plates, please?

Thanks

oil filter and chain adjust

Forums

This is regard to my previous topic "Chain Adjustment". So I received the correct aligning [dowel] bolt for the rear wheel to brake hub and believe it or not everything now lines up far happier although still displaced towards the timing side.

Continue to rebuild I would like comments on fitting the detachable oil filter I bought from RGM, does it fit into the feed to the engine?

Many thanks again to those who helped with my "chain Adjustment" topic

 

 

 

 

 

 

 

 

Double drum front brake.

Forums

Hello Norton people. This is my first post so here goes. From my investigations, I understand that my frame is from a 1956 Dominator. It’s a Triton I bought for £300 some (cough) 40 years ago. My query relates to the current front hub/brake arrangement which comprises two 8” drums bolted back to back and fitted with two brake plates. The brake plates (both SLS), shoes, bearings, distance tube etc appear to be standard Norton components.

3 start and 6 start oil pumps ?

Forums

Despite reading everything I could I cant find any real descriptions or photos as to what they actually are or look like. I realise one pumps more oil and can do more harm than good but how do I know what has been fitted to my 59 ` Dommi 88 ? Do I have to remove the worm gear to check and clean the pump if so any advice on how to do that ?

 


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