100mm BBHSD and 68mm Bottom Bracket

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barbs00   100 W

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100mm BBHSD and 68mm Bottom Bracket

Post by barbs00 » Mar 11 2018 5:08am

Does anyone know if you can use a 100mm BBSHD with a 68mm bottom bracket by using spacers?

Will it throw out the chain line?

Any other issues?

Not the best way to do it I know but I already have the motor.

Cheers

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eCue   10 kW

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Re: 100mm BBHSD and 68mm Bottom Bracket

Post by eCue » Mar 28 2018 1:38pm

I suspect it will be to wide.
I'm currently using a 68mm bb axle with a 125mm IG nexus hub and its borderline too wide causing unneeded noise / wear. I should replace it soon..
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Marin   1 kW

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Re: 100mm BBHSD and 68mm Bottom Bracket

Post by Marin » Mar 28 2018 2:20pm

barbs00 wrote:
Mar 11 2018 5:08am
Does anyone know if you can use a 100mm BBSHD with a 68mm bottom bracket by using spacers?

Will it throw out the chain line?

Any other issues?

Not the best way to do it I know but I already have the motor.

Cheers
You can do it with 32mm of spacers to make up the difference, slide it in and see if its an acceptable chain line or not.

I'm running a 120mm bbshd in a 100mm bottom bracket, similar situation seems to work fine.
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barbs00   100 W

100 W
Posts: 107
Joined: Jun 01 2017 8:18am
Location: Australia....mate! (Gold Coast)

Re: 100mm BBHSD and 68mm Bottom Bracket

Post by barbs00 » Mar 31 2018 8:18pm

Thanks for the answers.

I went to the local metalwork shop and got them to cut me a 27mm spacer (for 73mm BB) out of 40mm by 3mm aluminium pipe. I painted it black and installed the motor.

The motor did rotate downwards initially but after I tightened the crap out of it it seems to be working fine.

Now I can use this motor on a wider bike in the future if I like :)

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