3 speed hub

ive done the research.

its possible to drive the 3speed independent of the pedals.

first. shimano suntour has enough meat on the left hand side to machine a thread to take a "southpaw" sprocket. no way to jam any of its 4 freewheels without ending up with a single speed again though...

so...starting?

there are things called 1-way bearings. ie, freewheels... or sprag clutches? anyone into RC cars will know what they are. (just a bit bigger)

one of these, and a strong "clock" spring on the crank...

push it BACKWARDS, winding the spring... pull in clutch. engine will start :)

will have to mod the pinion retaining screw with stub to take the bearing....and think of a way to lock it.

all simple things with a lathe :)
 
ive done the research.

its possible to drive the 3speed independent of the pedals.

first. shimano suntour has enough meat on the left hand side to machine a thread to take a "southpaw" sprocket. no way to jam any of its 4 freewheels without ending up with a single speed again though...

so...starting?

there are things called 1-way bearings. ie, freewheels... or sprag clutches? anyone into RC cars will know what they are. (just a bit bigger)

one of these, and a strong "clock" spring on the crank...

push it BACKWARDS, winding the spring... pull in clutch. engine will start :)

will have to mod the pinion retaining screw with stub to take the bearing....and think of a way to lock it.

all simple things with a lathe :)

im not sure if u understand the question.. i was simply just swaping to a 3 speed rear hub and mounting my sproket on the spokes
 
im not sure if u understand the question.. i was simply just swaping to a 3 speed rear hub and mounting my sproket on the spokes

:LOL: tis cool. i took the idea and ran away with it...

mmmmm, 3 speed engine... and i like tinkering :)
 
so do i but i think after all im gonna go will a single gear for pedaling and a coaster brake and a 27 tooth mounted on the spokes for the motor
 
Guys, it's been often posted that the S-RAM I model geared hub is beefy enough for mb use. Anything on these mb's that's abused will fail. The SickBikeParts shift-kit is highly praised by users and has a freewheel designed into the unit.
 
Guys, it's been often posted that the S-RAM I model geared hub is beefy enough for mb use. Anything on these mb's that's abused will fail. The SickBikeParts shift-kit is highly praised by users and has a freewheel designed into the unit.

ive been saying this the whole time.. im not interested in a shift kit or a jackshaft.. this is about a internal shift.. please stay on topic.. ur idea may be good but it has been offered houndreds of times
 
yes. what you asked was. "can i put a sprocket on a motored bike that has a 3 speed hub instead of a derailleur change" (basically)

a bleedingly obvious answer really...why not? a bike wheel is a bike wheel is a bike wheel is a bike wheel is a bike wheel and if i could ride a unicycle, id sure as **** put one onto its wheel as well....

the only problem you may have is its a 28 0r 32 spoke wheel which needs different holes in the sprocket.

what i proposed was abusing a 3 speed way beyond its intended design :D

for you? pedalling? why even ask? thats what they are designed for, strangely. pedalling.

to the hub, being driven through the spokes is no different to rolling down a hill coasting.... or using the brakes (rim mounted)

right. next silly question :)
 
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