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cool bike

3882 Views 35 Replies 8 Participants Last post by  imslow
dave from australia just ordered a tshirt and sent pics of his bike. it's a modern bike so I didn't put it on the site but it's still a cool bike. I've never heard of one before. dave says they're popular in australia and europe but were never sold in the US.

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Most of the smaller Honda twins are 180 degree, which is why they sound so... strange. Some were built in both 180 (CB) and 360 (CL, where broad power band is more important).
H-D is 45, Indian is 42, etc. Some JAP 50.
The missing factor in firing and rotational order is crank-pin position. Even with a common (side-by-side) pin, offsetting the centerline will offset the firing order, which is either added or subtracted (duh) to the cylinder position (odd-fire Buick V6, etc.). Needless to say, many more combinations can be built than will run. The Yamaha XS650 (originally an A65 variant with 360) crank can be re-timed by simply re-indexing the splined connecting shaft between the L & R flywheel halves:
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