Okay, so it's another of my wacky ideas but has anyone ever considered that it's possible to replace or modify the cam (a rephasing of sorts) so that both cylinders of an XS650 fire at the same time?
I've no doubt there would be more vibration this way but big singles have gobs of torque and can be operated at very low speeds without over lugging the engine. It seems to me that firing both cylinders at the same time would "in-effect" turn the XS650 twin into a big thumper.
Horsepower would probably drop and the redline might need to be lowered but turning the twin into a pseudio-single would allow for taller gearing for street use or stump pulling torque offroad. Agreed?
Best I can tell, the wasted-spark ignition system already in place on a stock XS would need no modification and only the cam would have to be changed. And anyone who can rephase an XS to make it a 270 or 277 engine would have no problem making or modifying the cam.
Thoughts? You know, besides, "Billy, you're an effing idiot!"
I've no doubt there would be more vibration this way but big singles have gobs of torque and can be operated at very low speeds without over lugging the engine. It seems to me that firing both cylinders at the same time would "in-effect" turn the XS650 twin into a big thumper.
Horsepower would probably drop and the redline might need to be lowered but turning the twin into a pseudio-single would allow for taller gearing for street use or stump pulling torque offroad. Agreed?
Best I can tell, the wasted-spark ignition system already in place on a stock XS would need no modification and only the cam would have to be changed. And anyone who can rephase an XS to make it a 270 or 277 engine would have no problem making or modifying the cam.
Thoughts? You know, besides, "Billy, you're an effing idiot!"
would sound mean !! i want one too
