Sprockets Smaller Sprocket For Single-Speed Bikes

[5-7HEAVEN]

On "The Whizzard's" maiden voyage yesterday, I rode to my jobsite and back, then motored west to Home Depot for stuff, a distance of 25 miles. The bike performed flawlessly; this surprised me cuz I rescued it eight days ago from months of neglect in an open bike lot. Changed oil and crumbling fuel lines, tightened stem, added air and awayyy she went!

Brakes need attention but that's another post.

My question is if it's possible to change to a smaller sprocket on single-speed bikes. This Whizzer is freewheeling; it has a small drum brake, not a coaster brake.

However, I'd also like to swap to a smaller sprocket on "The Dragon Lady", my twin-engined cruiser with coaster brake.

The reason is that both bikes need my pedal-assist during midrange and top speed. My other dual-engined monster "The Iron Dragon" has five speeds and fifth gear REALLY helps pull the bike, even at speeds over 30mph

What should I look at changing, the freewheel sprocket or the crankset?

IMO, adding more pedal-assist to a Whizzer bike or a motorized coaster bike would definitely enhance both bike's midrange and top end performance.

Of course low speed pedalling would suck without the engine , but I can live with that.

 

[augidog]

both my bikes use a 52T chainring and 18T coaster sprocket...major highend pedal-assist, 24mph...and not really too bad taking off or uphills, either, i love pedaling :helmet:

you can get whatever you need (chainring or sprocket or both) for both yer MB's, shop around

 

[5-7HEAVEN]

Thanks for the tip, augidog.