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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
What Carburettor are you using on your racing Comet?
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<blockquote data-quote="davidd" data-source="post: 110302" data-attributes="member: 1177"><p>In AHRMA, Carleton and I ran the Amal Mk2 34mm (smoothbore if possible). At the time the rules allowed it, but the Indian guys protested us even though we were not in the same class and AHRMA changed the rule to allow a Mk1 Concentric (R1034). I found one of these 34mm carbs, but I never used it as I went back to the 32 mm 10TT9. I sold the 34mm Concentric to David Tompkins, who says it is running great (37 BHP with Mk2 cam). He is on the cover of MPH this month.</p><p></p><p>I have run the 36mm (R2036) smoothbore on the dyno, but it is not legal. It made over 41 BHP. If you can run a Mk2 carb I would run the smoothbore (no idle screw). I think the street version would do very well, also. Then the Mk1 concentric.</p><p></p><p>These carbs seem to provide good performance and they are easy to get and everyone tends to know them and the issues they have.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 110302, member: 1177"] In AHRMA, Carleton and I ran the Amal Mk2 34mm (smoothbore if possible). At the time the rules allowed it, but the Indian guys protested us even though we were not in the same class and AHRMA changed the rule to allow a Mk1 Concentric (R1034). I found one of these 34mm carbs, but I never used it as I went back to the 32 mm 10TT9. I sold the 34mm Concentric to David Tompkins, who says it is running great (37 BHP with Mk2 cam). He is on the cover of MPH this month. I have run the 36mm (R2036) smoothbore on the dyno, but it is not legal. It made over 41 BHP. If you can run a Mk2 carb I would run the smoothbore (no idle screw). I think the street version would do very well, also. Then the Mk1 concentric. These carbs seem to provide good performance and they are easy to get and everyone tends to know them and the issues they have. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
What Carburettor are you using on your racing Comet?
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