5 speeds in a 6 speed motor.

czowner · 02-03-2008, 05:45 AM

Well I've done it, I now have a 5 speed gearbox where the 6 speed used to live. There was a couple of little surprises, but nothing that couldn't be worked around. I've lost the neutral light, the 2 methods of switching it are very different and non-swappable. The only part I'm not 100% happy with is the primary drive, as the 125cc 5 speed primary drive is 25% (4:1) lower I've had to bodge the 125 basket and 6 speed primary gear together. It has the potential to vibrate, if it does I'll have to peresevere and find a 200cc primary drive which is only 10% lower (3.33:1). The 223cc motor produces peak HP and torque about 1250 rpm lower than the 200cc motor hence the high primary drive (2.95:1).

Jonathan.

TeamCheap · 02-03-2008, 09:27 AM

So where are the pictures.

02-03-2008, 05:45 AM	#1
czowner Join Date: Sep 2006 Location: North East England Posts: 313	5 speeds in a 6 speed motor. Well I've done it, I now have a 5 speed gearbox where the 6 speed used to live. There was a couple of little surprises, but nothing that couldn't be worked around. I've lost the neutral light, the 2 methods of switching it are very different and non-swappable. The only part I'm not 100% happy with is the primary drive, as the 125cc 5 speed primary drive is 25% (4:1) lower I've had to bodge the 125 basket and 6 speed primary gear together. It has the potential to vibrate, if it does I'll have to peresevere and find a 200cc primary drive which is only 10% lower (3.33:1). The 223cc motor produces peak HP and torque about 1250 rpm lower than the 200cc motor hence the high primary drive (2.95:1). Jonathan.
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02-03-2008, 09:27 AM	#2
TeamCheap Join Date: Jun 2006 Location: directly under the earths sun............NOW Posts: 2,302	So where are the pictures.
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