Hi, I did the same repair to the Smiths chronometric speedo on my 1954 NH350 and like Joe I could not unscrew the chromed ring that holdsthe glass in place, I think someone previously had painted the case and then screwed the ring on before the paint had dried and it had become solid, nothing would ...

Air filter box, Ariel motor cycles..jpg Hi John This may help you, it is the 1953 Ariel Motors Ltd drawing of the air filter box for both singles and twins, in the alteration column of the drawing it states that in 1954 the "louvres" were deleted, I assume to be replaced by the "gauz...

Hi
I stripped and rebuilt the GB gearbox on my bike earlier this year and also have photos, I also made a cross section drawing of the box which may help you to understand the gear change mechanism, see attachment.

Regards
John Palmer

Hi
The crack in the con rod does look quite severe but sometimes surface cracks, if they are only shallow, can be polished out, this removes the point of stress and avoids the crack propagating. It may be worth a try as you may have nothing to lose.

Regards
John Palmer.

Hi
Just another photo showing the 3 components, the other photo's did not show to much because of the reflection from the stainless steel and the chrome.
Regards
John.

Hi
Have just finished making and fitting mechanical locking to the swinging arm spindle nuts, see photo's, I now feel much safer when riding.

Regards
John Palmer

Hi, Thanks for your replies and advice, at the moment I am awaiting the delivery of the replacement nut from Drags, I will get started as soon has it arrives and let you know the outcome. David, your description of the phosphor bronze type bearing is exactly as fitted to this bike, it was fitted by ...

Hi, NH 350 cc 1954. Arrived home the other day after a ride out and discovered that one of the swinging arm spindle nuts, the large chromed and domed nuts, was missing which left the swinging arm assembly loose on its bearings, the bearings are of the phosphor bronze type and not the rubber. I can o...

Hello David, Thank your Dad for me, he has given me inspiration and I am sure to other aging riders as well, I'm 74 yo and often wonder whether I'm getting too old to ride but now having read your story it gives me inspiration and courage to "get out there" and ride, although it may be for...

Thanks Duncan for that information, I will get it done but it will have to be a next winters job.

Regards
John Palmer