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Singles

Description
A technical forum for all single cylinder Nortons

Inter crankcase stamping

Submitted by david_gibson on Fri, 20/09/2019
Forums
Singles

hi

my 1935 Inter, along with several others seen recently (all 30's by possible coincidence), has a stamping above the engine number. It is a three-legged figure with a small circle at the outer end of each arm....or leg?. Anyone any ideas what this means. Some people think that it means that the engine has been back to the factory for special work, some say it has something to do with Harold Daniells.....which is a possibility as my bike was allegedly in his ownership at one time.

Just curious

Broken Doll's Head Lug?

Submitted by david_cooper on Sat, 14/09/2019
Forums
Singles

A pre-emptive solution by my late old friend Bernard Harding: car collector  motorcycle collector, and owner over the past few decades of 1926 16H, 1927 Model 18, 1932 Inter, 650SS, NorImp(!), plus many others ... sadly missed.

I hope this might be of interest.

 

Magneto chain bar tight.

Submitted by nicholas_reeves on Fri, 13/09/2019
Forums
Singles

Just in the process of replacing the magneto chain on my 1935 Es2. I found that the chain fitted was a 44 link chain and was very slack. Checking this out I discover it should be a 42 link with 15 tooth sprockets. I have 15 tooth sprockets fitted. Despite moving the mag as far forward as possible, the chain is bar tight. I have checked every possible measurement on both chains and  they are exactly the same size.

New clutch plates are thicker

Submitted by robert_uden on Wed, 11/09/2019
Forums
Singles

1949 Inter clutch

As my original clutch plates were in a poor condition I purchased a replacement set from the NOC. They looked good and I proceeded to fit them. I was advised that the friction plates were slightly thicker. The result was I could only fit 4 friction plates instead of 5, and 5 plain plates instead of 6 as I ran out of clutch hub space.

The clutch currently has the steel end plate and uses the mushroom at the end of the push rod, the clutch hub also has the circlip facility.

Will the clutch operate satisfactorily with just 4 friction plates?,

Grease type for valves 16H

Submitted by paul_knight on Wed, 11/09/2019
Forums
Singles

Being new to SV engines, can someone advise on the correct grease for the valve lubrication also how often, I have been told copper grease and at every start up but not confident. I am very aware that they get very hot and any grease that I have used has normally turned to oil and ran out within a short period of time. If I go out on a 30mile ride, should I stop every 5miles to grease the valves ?

16 H

Submitted by francis_vidril on Fri, 06/09/2019
Forums
Singles

Hello,

For a friend : is there a seal washer (join) between the cylinder head and the exhaust pipe ,thanks

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