im curious...
2007-10-09 11:52:08 · 3 answers · asked by Anonymous in Cars & Transportation ➔ Motorcycles
the new 2008 rmz 450 has 5 gears in it. This is an upgrade from last years 4 speed tranny.
The 450 in 2007 had 4 gears, but through R&D, they felt that they needed 5......
2007-10-09 13:09:46 · answer #1 · answered by SWT 6 · 0⤊ 0⤋
Two stroke engines have a MUCH narrower power band than a four stroke so you need more gears to keep it in the power. The bigger the engine the less gears you'll need also. My CR125 had 6 gears and my YZ490 had 4. The 125 was faster in a top end run but the 490 ate it at all other times.
2007-10-10 04:54:12 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The 450 has so much low end torque and massive power throughout it's power range, it could do the same work with just a 4 speed trani.
Honda and Yamaha open class bikes used 4 speeds at one time.
They didn't last long - either they were immediately discontinued or upgraded to a 5 speed.
2007-10-09 16:27:05 · answer #3 · answered by guardrailjim 7 · 0⤊ 0⤋