Miles per hour?

[PICKLEKOOKEN]

To any griso owners how fast are you going at 3000 rpm in sixth gear. I'm trying to lower my norgy's rpm at 70 -75 mph.

[oldbike54]

 Seems Greasos run a 12/44 final drive with a sixth gear overdrive of something near 1 - .08 . You can do the math Mike , my head hurts reading all of the U joint/CV joint stuff 

 Dusty

[flip]

I could be wrong but I think the Breva 1100 is geared the tallest of the CARC bikes.

[Hit Man]

To any griso owners how fast are you going at 3000 rpm in sixth gear. I'm trying to lower my norgy's rpm at 70 -75 mph.

48 mph, 1100 Griso

P.S. is you're trying to alter this, it will require a transmission change.  All of the CARCs are the same rear drive ratio - the gearing difference is in the primary reduction in the trans.

[beetle]

What Hit Man said.

[atavar]

Lower it? 4K RPM at 70-75 is almost lugging the poor thing as it is..  at least that's what my '08 does.. and that is where the sweet spot in the mpg curve is. 
I suspect if you lowered it much with taller gearing you'd be adding quite a bit of torque strain to the engine bottom end unless you are planning a bunch of coast to coasters where you will need or want only minimal power at speed with stops only for fuel..   
Or are you trying to sneak on some more top end speed? 
IMHO the Norge gear ratio's are about perfect.
Smarter minds than mine may offer more realistic opinions..

[LowRyter]

I don't suppose they make a 70 or 80 series tire in the right width?