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Singles

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A technical forum for all single cylinder Nortons

ES2 Cylinder Head Types

Submitted by ian_macdougall on Tue, 23/04/2024
Forums
Singles
Up until this weekend I was aware of 3 styles of cylinder head fitted to ES2, 19R/S, 50 during the fifties. Circa 1950 it was still the iron head. Around 1955, possibly a little earlier, there was the Al-fin head. This was the same shape as the iron head but with an iron skull combustion chamber and aluminium fins. It used the same rocker box as the iron head. From 1957 there was a new version of the aluminium head with cast-in pushrod tunnels. At the Stafford show I noticed a head for sale which at first glance appeared to be the Al-fin style.

Prewar Chronometric speedos

Submitted by david_cooper on Sun, 21/04/2024
Forums
Singles
I am (I hope) close to getting my Inter speedo but there's a delay sorting out the hub gear. But I found somewhere... Chronometrics are allegedly 1600 revs per mile unless they have a 4 digit number such as '1476' or '1500' or '1620' or something similar. Perhaps someone can confirm? Doing some calculations.

16h

Submitted by beverley_parslow on Tue, 09/04/2024
Forums
Singles
I have the mudguard and almost everything on. The problem is I cannot get the back wheel in. I can take off the back part of the mudguard but cannot bolt it back together when the wheel goes in. There is not enough space for the spanners. 

‘55 ES2 Chrono Speedo Cable

Submitted by dan_field on Thu, 04/04/2024
Forums
Singles

My ‘55 parts book lists the speedo cable as B2/552, I need one so ordered one from the club listed as B2/552 4’6”  but I can’t see any route that makes the cable long enough to reach the speedo, what route is it supposed to take and any idea how long it should be if not 4’6”! 

Cheers

Dan 

Wide line 500 international exhaust system

Submitted by geoff_hastings on Wed, 03/04/2024
Forums
Singles

Hi there, I’m getting close to finishing the restoration of my 1957 500 wide line inter and as you might guess the exhaust pipe and silencer are both quite rusty but salvageable. I initially looked at Armours to supply a complete system but they couldn’t be bothered to answer my enquiry and from what I’ve read most people seem to have trouble with the fit of their supplied pipes. I could order an unplated pipe so if it doesn’t fit I can make it fit then get it plated, or, patch up my existing pipe and silencer then paint it black.

16H Speedo Drive Cable

Submitted by jim_paterson on Wed, 03/04/2024
Forums
Singles

Having just sourced a Smiths speedometer and  the speedo gearbox for my 1940 16H,  I’m now looking for the correct speedo cable with a male spade end to fit the gearbox.  Any recommendations where I may obtain one in the UK please!  Jim.

Control cables

Submitted by paul_armstrong on Tue, 02/04/2024
Forums
Singles

I need advice please. Currently restoring a 1959 ES2 and I have a control cable which I cant locate where it should go. It’s 118 cms/46/5 inches in length and has an adjustment on it. I have 5 control cables in position on the handlebars. Clutch, Front Brake, Air control, Throttle, Exhaust valve. Any ideas where it should go.

Thank you. 

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