Dude, whaat?? The OP is posting about fixes on Norton cylinder headsMy mate Bob Rosenthal was an A Grade rider in the old days and is a current road race champion. Even he said 'a steering damper compensates for bad handling'. To ride a motorcycle really fast, it must have what might be described as 'bad handling'. Peter Willams specified race handling for the first Commandos and was embarrassed when people started crashing. The handling which is needed at high speeds is different from what is needed at low speeds.
Errrrrm (Norton exhaust thread repair) ??My mate Bob Rosenthal was an A Grade rider in the old days and is a current road race champion. Even he said 'a steering damper compensates for bad handling'. To ride a motorcycle really fast, it must have what might be described as 'bad handling'. Peter Willams specified race handling for the first Commandos and was embarrassed when people started crashing. The handling which is needed at high speeds is different from what is needed at low speeds.
Perhaps an adjustable top motor mount for adjusting trail might have helped.It's likely that Peter Williams crashed because he needed new valve guides.
View attachment 118165
A sample of Dan's work. Reasonable pricing and fast turnaround
Hey. Have you been poking around my bike? Thats what Dan did for me!View attachment 118165
A sample of Dan's work. Reasonable pricing and fast turnaround
OI! I thought going off topic was now in fashion? Try posting pics of your cylinder walls and see what topics come up, EH! ;-)Errrrrm (Norton exhaust thread repair) ??
In this case its not going off topic as much as returning to a single subject a certain poster is obsessed with.OI! I thought going off topic was now in fashion?
Say what!If exhaust pipes are rubber mounted and held to the cylinder head with slip-joints and springs, exhaust port repairs should never be needed. Japanese motorcycles became expert when designs from other countries were copied, however the British are too proud. When the Commando needed a steering damper, it did not get one, probably because a steering damper might be an admission of a handling problem. Every fast motorcycle has that handling problem ! A Commando is faster than most other British motorcycles . Some people are defeated by their own mindset.