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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Carb for Comet
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<blockquote data-quote="nobby" data-source="post: 28992" data-attributes="member: 257"><p>I already have sent the following information in a PM, and added a few things.</p><p>The cam in the 600 is an ex-race cam from Australia (or a Terry Prince one, do not have confirmation about this), the cam in the 500 was a Robinson 105, but also modified by an 'expert' for racing. I did race the 500 engine for a couple of years, so many parts were modified. Hence the nervous character. If you only go for the 30 or 32 with a Mk2 cam I think the performance will improve and it can stay smooth with the correct silencer. </p><p>If you go for a bigger carb, check out your tank, some petrol tanks wont allow a bigger carb. If so, I have somewhere a longer and straight 32mm inlet, leftover from racing. That way a 932 carb will stick out a bit, see picture.</p><p>[ATTACH]1109[/ATTACH]</p><p>I use the long megaphone-like SS Supertrapp, the sound is marvelous and the performance also. 39.8 bhp on the dyno is not bad for a street-Comet, is it?</p><p>Until the sidecar disaster during the Annual at IoM, all engine work was done by a professional. After that event my wife did not leave me, but the pro was kicked out! I did the 500 engine myself, totally rebuild it with new and some second hand spares. It took me probably 10 times the amount of time because I am not a mechanic. But I did it, and when it was back on the street it started right over and was running almost 100%. I bought the 600 engine in Australia with the great help of Neil Videan from an ex-racer (do not know for being allowed to enclose his name) and kept it running perfectly and fast so far. It was build with great expertise so I did not have to do a lot actually. </p><p>Therefore it makes me proud to be called 'having a great deal experience' by an expert like David Dunfey.</p></blockquote><p></p>
[QUOTE="nobby, post: 28992, member: 257"] I already have sent the following information in a PM, and added a few things. The cam in the 600 is an ex-race cam from Australia (or a Terry Prince one, do not have confirmation about this), the cam in the 500 was a Robinson 105, but also modified by an 'expert' for racing. I did race the 500 engine for a couple of years, so many parts were modified. Hence the nervous character. If you only go for the 30 or 32 with a Mk2 cam I think the performance will improve and it can stay smooth with the correct silencer. If you go for a bigger carb, check out your tank, some petrol tanks wont allow a bigger carb. If so, I have somewhere a longer and straight 32mm inlet, leftover from racing. That way a 932 carb will stick out a bit, see picture. [ATTACH]1109.vB[/ATTACH] I use the long megaphone-like SS Supertrapp, the sound is marvelous and the performance also. 39.8 bhp on the dyno is not bad for a street-Comet, is it? Until the sidecar disaster during the Annual at IoM, all engine work was done by a professional. After that event my wife did not leave me, but the pro was kicked out! I did the 500 engine myself, totally rebuild it with new and some second hand spares. It took me probably 10 times the amount of time because I am not a mechanic. But I did it, and when it was back on the street it started right over and was running almost 100%. I bought the 600 engine in Australia with the great help of Neil Videan from an ex-racer (do not know for being allowed to enclose his name) and kept it running perfectly and fast so far. It was build with great expertise so I did not have to do a lot actually. Therefore it makes me proud to be called 'having a great deal experience' by an expert like David Dunfey. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Carb for Comet
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