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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Amal 10TT9 install on Comet
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<blockquote data-quote="A-BCD" data-source="post: 18085" data-attributes="member: 50"><p>Hi Craig, </p><p></p><p>to remove the jet block just take out the grub screw 34/105. I've not removed the spray tube so can't help there.</p><p>I have 10TT9s on my B rapide, which has 105 cams ( Mk II with modified overlap ) 9:1 Omega pistons. my Rapide has 10TT9s, with 9:1 Omega pistons and Hamilton '105' cams ( Mk II with modified overlap )</p><p> </p><p>The carbs were originally 1 1/16", but the bore on these is 1 1/8" except for the last section before the flange - so I bored this section out so they are 1 1/8" all the way through.</p><p> </p><p>These are my settings:</p><p> </p><p>Jet Block 6ZR</p><p> </p><p>Slide No 5</p><p>Needle jet .109</p><p> </p><p>Main Jet 340</p><p> </p><p>Needles I have I think are not TT ones, they are stamped RN so may well be from a Remote Needle carb, I think they are longer than the correct TT ones and have 7 notches for the clip. I am using second from top. To get a tickover I have cut 2 slots in the back of the slide with a junior hacksaw, you have to be patient to get this right, but it supplies a small air bleed. Alternatively you can drop a long screw down through the slide from the top and adjust it from there, but I think there could be risk of jamming. My bike ticks over nicely, I really like these carbs. Ignition timing 35 degrees full advance, BT-H magneto.</p><p> </p><p>The float chambers are TYPE 302, I have put a small fibre washer on top of the float, under the aluminium valve, to lower the float level by about 1/16".</p><p> </p><p>To balance the heavy spring ( I have two to contend with !! ) I have used a contra-spring ( A twin kickstart spring is just right ) inside the handlebar to give a light but positive throttle action.</p><p>The bike has a Toga silencer on it, it seems pretty quick to me.</p><p></p><p>Hope this helps !!</p><p>Cheers, Brian</p></blockquote><p></p>
[QUOTE="A-BCD, post: 18085, member: 50"] Hi Craig, to remove the jet block just take out the grub screw 34/105. I've not removed the spray tube so can't help there. I have 10TT9s on my B rapide, which has 105 cams ( Mk II with modified overlap ) 9:1 Omega pistons. my Rapide has 10TT9s, with 9:1 Omega pistons and Hamilton '105' cams ( Mk II with modified overlap ) The carbs were originally 1 1/16", but the bore on these is 1 1/8" except for the last section before the flange - so I bored this section out so they are 1 1/8" all the way through. These are my settings: Jet Block 6ZR Slide No 5 Needle jet .109 Main Jet 340 Needles I have I think are not TT ones, they are stamped RN so may well be from a Remote Needle carb, I think they are longer than the correct TT ones and have 7 notches for the clip. I am using second from top. To get a tickover I have cut 2 slots in the back of the slide with a junior hacksaw, you have to be patient to get this right, but it supplies a small air bleed. Alternatively you can drop a long screw down through the slide from the top and adjust it from there, but I think there could be risk of jamming. My bike ticks over nicely, I really like these carbs. Ignition timing 35 degrees full advance, BT-H magneto. The float chambers are TYPE 302, I have put a small fibre washer on top of the float, under the aluminium valve, to lower the float level by about 1/16". To balance the heavy spring ( I have two to contend with !! ) I have used a contra-spring ( A twin kickstart spring is just right ) inside the handlebar to give a light but positive throttle action. The bike has a Toga silencer on it, it seems pretty quick to me. Hope this helps !! Cheers, Brian [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Amal 10TT9 install on Comet
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