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bikeman1684 01-24-14 01:54 PM

Bike Chain Size
Dear All,

Inspired by this videos i have started to build my own electric bike.

Please can you advise what Chain size have you used for this bike.

I believe it is not a standard bike chain.

Thanks for your help.

sorry for any inconvenience.

EBikeFL 01-24-14 03:35 PM

Hello, bikeman1684.

You may want to try and their stokemonkey:

You can also adjust any bicycle chain by removing one or more links. ;)

bikeman1684 01-26-14 04:25 AM

To explain the problem bit more. I brought a kit from BHT Diffusion and discovered that the chain supplied by them with the kit is small. Hence I had no option but to replace it.

The chain supplied by them is TJC Link chain 1\2" 1\8" with pin length of ' 8.7 mm '.

The closest to it i can find is bmx single speed Chain
Specification is 1/2" x 1/8" with pin length 10.7 mm

Please can someone advice what is Pin length and that different pin length makes any difference.

chas58 01-31-14 12:45 PM

for width: 1/8" chains are used on single speed & fixed gear (includes BMX), while 3/32 is used on most 6-7-8 speed rear cogs. I think it is smaller for 9, and 10 speed cogs.

You can use a 1/8 chain on a 3/32 sprocket, but a 3/32 chain will not fit on a 1/8 sprocket (cog). Is that your problem???

From Sheldon brown:
  • 1/8" (0.125", 3.18 mm) chain is used on most single-speed bicycles, and bicycles with internal gearing.
  • 3/32" (0.094", 2.30 mm) chain is used on derailer equipped bicycles that have more than 3 cogs at the rear.
and more:

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