Why did Honda flip the the swing arm over for the RS250 (right chain drive as opposed to left like all the other single sided swing arms)? Is it possible to convert to a MC28 swing arm and install a NSR250 motor?
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james
Its not how fast you go...Its how you go fast.
MC21 Rothmans
RS250
RC31
CRF250X
748R
Porsche (many)
http://members.rennlist.com/j911brick/rennlist3_002.htm

No because the motor has a different V angle. Reduced from 90 to 70 degrees. This makes the motor more compact allowing the swingarm to be made longer. It's the kinda thing Yamaha made a big song and dance about with the R1 when it was launched. Aids handling I guess.

Anyway the frame is shorter that the NSR one so I doubt the motor woulld fit.

OK, but why did they flip sides with the swingarm?
_________________
james
Its not how fast you go...Its how you go fast.
MC21 Rothmans
RS250
RC31
CRF250X
748R
Porsche (many)
http://members.rennlist.com/j911brick/rennlist3_002.htm

I read an article about it a few years back......still got it I think. I'll track it down and let you know

I think it is because the engine runs the other way around, ie if you look at the left side of the bike at the crank, the crank rotates clockwise instead of anti clockwise. The reason for this was to inhibit wheelies and get better drive out of corners.....

the old 90 degree RS250 engine (nf-5) from 1990-1992 will fit with into te NSR Chassis with very little work.
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nsr300se rs250r´05 ns-1rr