[Goob]

Posted a while back. Previous info: TT250, SS exhaust, Conti GO! street tires, 47 sprocket, VM26-606 carb, pannier "sails", 175 lbs. 66-67 mph.

Noted before that I was switching to a VM28-49. Well it doesn't fit. Too big and it has a huge fuel inlet. Anyone want/need it, I'll give you a deal.

Got a NIBBI PE28 and it is perfect. No difference in top speed, but before I was guessing a 4-5 mph correction factor (70-72 indicated). Now GPS actually does show 66-67, but 75 was the indicated. So, no change sort of, but more accurate.

In normal conditions the PE28 runs better than with the VM26-606; more responsive by far. Runs completely smooth up to 8000 rpm in every gear. 8K in 5th is pretty much terminal velocity unless I am going down hill.

I don't think I would ever want to go any faster on this bike. 66-67 is on the borderline of stability even with the Conti Go! street tires (90/90 front, 120/90 rear). I am glad my commute doesn't involve highways.

Moved the -606 to my Orion RXB150...very nice on this bike...massive improvement over the "Mikuni" VM26 Flange mount that was stock.