Schwinn S1000 drivetrain

[TylerDurden]

I picked up a used scooter cheap. Dead batts, no charger. I wanted the drivetrain for a trailer project.

It is very quiet, due to the beveled gears.




It's a 36V brushed 1000W motor. 3000rpm before reduction. (After reduction ~440 rpm?)

I would prefer a small hub motor for the trailer project. I may use this for a non-hub bike, in conjunction with a dual-eno setup.

 

[magudaman]

Be careful with this tranny. I had a 100 amp controller with 33v and it ripped its self apart in 2 months. First it was bearings failing then I upgraded them to higher quality but then the integrated pinion gear machined into the motor shaft ate it. But to that point it was a wheelie popping chaos machine, lots of fun with endless torque.

 

[TylerDurden]

Duly noted... avoid 3300W shock-loads through a 1000W rated tranny.

I enjoy wheelies as much as most folks, but I envision this rig on an ebike, run though a geared hub for hill climbing and sustained traffic speeds.

 

[vanilla ice]

Looks nice, what size wheel are you going to run with it?

 

[TylerDurden]

I would probably use this motor on a 24" wheel.

Someone suggested making a cruzbike copy (crudebike?) with the FS ToysRus bike I got a long while back... it might be feasible to drive the rear wheel with the motor and the front wheel with pedals. That setup could satisfy a number of interests: a semi-recumbent position (but up higher), dual power (but without dropping 300 bux on the sram dual-drive) and even the potential for implementing a bit of leaning technology.

I have increasingly less time to tinker; so it will have to suffice to speculate and occasionally look at isolated pieces of the puzzle.

 

[vanilla ice]

Ah, won't that take the motor out of its "happy place?" I was thinking a 16" or 20" tire would be ok.

 

[TylerDurden]

Ah, won't that take the motor out of its "happy place?" I was thinking a 16" or 20" tire would be ok.

I envision using the motor through gearing: a small sprocket on the output chain driving an internal hub fitted with ~50t sprocket.

Not too different from the mongoose CX450, but 2x power and hella quieter than the Unite my1018 straight-cut gears.

 

[vanilla ice]

Ah ok, here I was worried about the increased tq. on that pinion also, but as suspected, way ahead of me.. Please document this as thoroughly as the cooling mod so we can bite your styles once again.

 

[TylerDurden]

More guts... (spurred by the interest in helical gears: http://endless-sphere.com/forums/viewtopic.php?f=28&t=14139 )

 

[TylerDurden]

more more guts:

View attachment 4




As stated above, the unit runs very quietly.

I haven't decided the application yet; but a quiet 1KW motor with reduction for $150 retail should have plenty of potential.

 

[liveforphysics]

Thank you for the pics Tyler. I may have a non-transportation related application that one of those may be perfect for.

Its strange that in all my other hobbies, we pay thousands, sometimes 10's of thousands to get away from helicals and run straight cut. In this hobby, they give us straight cut normally, and we persue helicals. Grass is always greener.

 

[TylerDurden]

Thank you for the pics Tyler. I may have a non-transportation related application that one of those may be perfect for.

Cool beans.

FYI: the threads on the output shaft are reverse (if anyone plans on keeping the original shaft intact).

 

[StudEbiker]

Does this motor have the same three bolt pattern that the Kollmorgen/BMC motors use? What kind of output shaft does the motor have?

 

[magudaman]

The motor shaft is actually machined as the pinion gear, u can see it shredded in my photo up above. They were using this same motor on one of their chain drive models, so then it was proably that standard shaft again.