Chainring Question

[Biggles]

I've just reworked my 20" wheel folding bike to a 36v 500w Bafang 8fun. This came with a 46t chainring.

On testing I was not able to peddle assist as I can't safely or comfortably peddle that fast. I have slow powerfull legs.

I had the same problem when the bike was in its original form. It has a 42t chainring on a 25w geared hub motor. I changed the chainring to 52t and it transformed my ride, but apart from very steep or very long climbs I was always in top gear.

I like to peddle and put some effort in as I go along but am wondering if my current 52t chainring is going to be large enough if I go through the bother of welding it the Bafang chainring. Also I would like to use the lower gears as and when required.

 

[flecc]

I have a 60 tooth chainring on my 20" wheel e-bike to give me a sensible gear range.

They aren't a standard item, mine was made by Zenith in France and I bought it from Highpath Engineering, specialist cycle engineers.

 

[anotherkiwi]

You need a spider like this

They exist in several BCD configurations

Then you can mount the chainring of your choice

 

[Biggles]

You need a spider like this

They exist in several BCD configurations

Then you can mount the chainring of your choice

I've seen them and if I can't set a steel one then I will have to get one. If I can get a steel one then I will weld it to the Bafang chain wheel, then I will have a double ring changable with my fingers if ever required.