Hi Josh, mine measures 8 3/16” or 207mm from the back face of the speedo unit to the very end of the adjusting knob. I think it’s the original one for the bike but have not fitted it yet, it came with the bike. If it’s too long, I think it can be cut down with sharp wire cutters and it sort of re-th...

Hi Josh, remove split pin on short knob, fit extended shaft and replace split pin. If you are unlucky, you may need another split pin. You may also need some needle nose pliers as the reset pin protruding from the casing is spring loaded and you need it pulled out a little to get the split pin in th...

Thanks for all the replies, I will use some suitable flat washers with the hex. set screws and use Robs tip about putting a nut in the socket. I must have read about paint or powder on the engine plates here before as they are some of the parts I lightly sprayed rather than powder coated, so thank y...

Very nice Paul, I hope to be able to do the same with my similar bike soon. Congratulations and happy riding.

I'm trying to fit the mag/dyno to my 1950 NH project and its a heck of a job to get the bolts started. Should I fit the mag loosely to the engine plate first before fitting the timing cover? My parts list shows three 3/8" BSW setscrews are used to hold the mag down but no washers, bit surprised...

I completed some checks today, note that my “workshop” is pretty basic, I do not have access to the measuring equipment and tools some Arielists do. The engine has a used and very slightly worn standard A7/642 twin lobe cam with probably the original cam gear which is in reasonable condition. The ha...

Keith, thank you. I think your information is from a Pitmans “Book of the Ariel” as I have now seen this elsewhere. Oddly, I have seen another copy, the tenth edition 1959, in which mentions 0.010” for SV engines and OHV, other than Red Hunters, which should be checked with 0.023-0.025”. Roger, than...

I am hopefully about to close up the engine on my 1950 NH project and thought it would be a good idea to check the valve timing, out of curiosity and to see if wear in any of the parts has made the figures vastly different from the standard values. My question is, what should the valve clearances be...

Paul, thanks you for that, I think I have seen his trailer at shows some time ago. In the past I bought IWIS from a couple called Chain Gang or similar but believe one of them unfortunately passed away. Roger, appreciate the advert and it was the first place I checked but primary chain of correct le...

I am ready to order chains for my 1950 NH project, anyone got a recommendation, brand and supplier?

Thanks in advance.