I
Irish John
Guest
You already answered your own question. You sheared the teeth off when
you engaged the engine at high rpms.
I doubt if that is covered by a guarantee........
Bicycle-Engines.com is the only supplier of these kits and parts
He didn't say he engaged the gears at high rpm Forbisher. Your quote comes from another thread and it still doesn't say the gears were engaged at anything other than low revs. The gearbox can be engaged at low revs when the bike is statioery but it's much better when the wheels are turning. It can also be engaged at high revs if the bike is freewheeling really fast. If you engage at high revs when stationary the key in the sprocket shaft shears first because it is the thinnest key. The other two keys should also shear before the teeth disintegrate. This is a case of a defective piece of casting in the first gear wheel. The centrifugal clutches in the Grubee and the Hoot are identical and from the same government factory but the clutch bells are very different and the hoot clutch bell wont work on a Grubee cos the teeth are different. The Hoot clutch bell and first gear wheel actually won't work at all because it is a highly flawed design as we all know and that is why nobody buys it and nobody sells it after they've had their first shipment.
Also the clutch works the same either way around and swapping it around keeps the wear even on the pads.
It is the easiest thing in the world to drop the engager at too high rpm and the box is designed to sheer the key before the gear wheel chews itself to pieces.
Keeping the engager permanently engaged is OK but the motor can stall on long downhills and that is why I usually disengage on really long downhills.