...single carb...
- in theory its a nice idea, saves cost and simpler technique - in practise the down post gets in the way...
- a point to remember is that the TR6(71x82) (TR6 from 82 are 76x71.5, long stroke - and have lower 42 HP), TR7(76x82) and Commando(77x89) are all long stroke whereas the XS tends to short stroke(75x74) so the engine characteristics are a bit different to start with and it is common in brits that the cylinders dont run in sync
- nevertheless this is fairly common in the sidecar racing scene, for torque and responsiveness
- there is also a trade off in manifold size where the tubing act as a plenum, short...incr hp, long..incr torque :: large plenum...incr torque, small plenum...incr HP..this is measured from inlet valve to end of airbox...to max HP you need somewhere in the region of 22-26 inches...
- the stock XS has a length of about 23 inches...
- i have done this by cutting the frame and modifying it to double cradle like a BSA...
- if you drop it on the side the carb sticks out like you want, what are you going do?
...or you do this...
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http://www.sense.net/~blaine/hardtail.html