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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Compression ratio
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<blockquote data-quote="davidd" data-source="post: 55781" data-attributes="member: 1177"><p>Bill,</p><p></p><p>I think the answer is yes. It would have been Ian Hamilton, at least for the combustion chamber and piston Carleton and I used. As I understand, it is a copy of the Manx style combustion chambers and pistons that worked so well many years ago. It is often very expensive and time consuming to do this development work. It was why the Vincent was never developed. There were no funds. So, we all tend to do very unscientific things if someone else has done the hard work. Often we do them even if there was no hard work done!</p><p></p><p>The Terry Prince head is essentially a big port head with a squish combustion chamber and a "D" shaped anti-reversion exhaust port. The head was in part developed by John Trease. He is the bloke who got 58 BHP from Ian Boyd's Vinton, so he knows his way around an engine. I have never had any starting issues, but I have always used Amals and I have no experience with Gardner carbs. I know Stuart Hooper always liked the twin plug ignition not because it made more power, but because it started the bike so easily. Stuart used an Amal also with his funny head and piston.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 55781, member: 1177"] Bill, I think the answer is yes. It would have been Ian Hamilton, at least for the combustion chamber and piston Carleton and I used. As I understand, it is a copy of the Manx style combustion chambers and pistons that worked so well many years ago. It is often very expensive and time consuming to do this development work. It was why the Vincent was never developed. There were no funds. So, we all tend to do very unscientific things if someone else has done the hard work. Often we do them even if there was no hard work done! The Terry Prince head is essentially a big port head with a squish combustion chamber and a "D" shaped anti-reversion exhaust port. The head was in part developed by John Trease. He is the bloke who got 58 BHP from Ian Boyd's Vinton, so he knows his way around an engine. I have never had any starting issues, but I have always used Amals and I have no experience with Gardner carbs. I know Stuart Hooper always liked the twin plug ignition not because it made more power, but because it started the bike so easily. Stuart used an Amal also with his funny head and piston. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Compression ratio
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