Spacers for the Bafang BBSHD

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Innersvingen   1 µW

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Spacers for the Bafang BBSHD

Post by Innersvingen » Jan 06 2016 7:42am

Hi!

Quick question: Does anyone know where i can find some spacers witch fit the Bafang BBSHD? Inner diameter is 34,75mm (1,37") and outher diameter sould be about 41-44 mm.

Long story: Unfortunately the BBSHD 100mm did not fit my Surly Moonlander. The secondary reduction gear presses up against the chainstay, thus about 12 mm of the crank axle wont go into the bottom bracket. This leaves me with about 6 mm of threads showing on the non-drive side, which is not enough to attach the lockring & mounting plate. This can be fixed by using the BBSHD 120mm and add some spacers to the bottom bracket. The BBSHD is on its way but I cant find any site where they sell spacers that fit the BBSHD axel.

Sheers
Espen

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Leebolectric   1 kW

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Re: Spacers for the Bafang BBSHD

Post by Leebolectric » Jan 06 2016 11:16am

any bottom bracket spacers should work fine.
most BB's come with 2-3 of them.
your local bike shop should have tons of spares for cheap or free.
2015 Intense Tracer275 with Tangent Ascent inside triangle https://endless-sphere.com/forums/viewt ... 28&t=75045
2010 Turner 5Spot with BaffangHD https://endless-sphere.com/forums/viewt ... 28&t=75569
2009 KHS Velvet 6" with BafangHD (see above thread^)
2015 SantaCruz Bantam with TEMPORARY Cyclone https://endless-sphere.com/forums/viewt ... 28&t=76131

Speady   10 W

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Re: Spacers for the Bafang BBSHD

Post by Speady » Jan 06 2016 1:37pm

Seems you are in need of these little reduction rings.
I got them from alcedoitalia.it , but maybe you can get them in your metalworking shop nearby too.
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Innersvingen   1 µW

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Re: Spacers for the Bafang BBSHD

Post by Innersvingen » Jan 08 2016 4:59am

Thanks for the tips! Afther some serious detective work I ended up with these ones:

https://cometkartsales.com/images/P/km-50mmspacers.jpg

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tomjasz   10 GW

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Re: Spacers for the Bafang BBSHD

Post by tomjasz » Jan 13 2016 2:30am

http://electric-fatbike.com/2015/11/19/ ... hainstays/
Karl wrote:Some large spacers are made of steel which I really don’t like and I find that aluminum is lighter and works much better because it is soft. If you can it is best to only install one big ring that is the right size or a little too big and not a bunch of skinny ones stacked on top of each other. The friction between the ring and the mounting plate is the only thing that keeps the drive unit from sagging down like a cow udder, so the fewer rings you have the better off you are. The rings are 34.75mm ID and around 41mm-44mm OD. The measurements are not crucial as long as the ID is 34.75 or greater. Any competent machine shop can quickly and easily make you a spacer out of any steel pipe, although getting it from a reputable e-bike vendor will probably be cheaper and way more convenient.
This shows the varying depths of these spacers. 6.5mm (left) 2mm (center) 2.5mm (right). What size will you need? It’s a surprise and I don’t want to spoil it for you.
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34.75 mm ID spacer rings from various vendors. The far right one is from Bafang and came with one of my BBSHD’s, the other two are from Doug at Cali-ebike (I think although the center one might be Lectric’s).
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Thanks Justin_le we're here thanks to you. All the best to the mods for their tireless work keeping it on an even keel.

sdh1084   1 µW

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Re: Spacers for the Bafang BBSHD

Post by sdh1084 » Feb 20 2016 5:34pm

Looks like I have a similar problem, will I have to order the 100mm bbshd1000w? I currently have 73mm. Here are some pics.
bb chainstay.jpg
bb chainstay.jpg (216.7 KiB) Viewed 2317 times
bb spacer and thread.jpg
bb spacer and thread.jpg (152.1 KiB) Viewed 2317 times

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tomjasz   10 GW

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Re: Spacers for the Bafang BBSHD

Post by tomjasz » Feb 21 2016 8:42pm

What does you BB measure? The 68MM kits is as long as the 73MM. Spacers are easy to find.
Thanks Justin_le we're here thanks to you. All the best to the mods for their tireless work keeping it on an even keel.

Speady   10 W

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Re: Spacers for the Bafang BBSHD

Post by Speady » Mar 29 2016 1:08pm

You can file away pretty much of the bbshd housing in this chainstay area with no problem, so it does't rub on your chainstay.
If you'd go for a 100mm in this case you worsen the the chainline. The Alloy housing of the bafang is pretty thick, so you can use the angle grinder :D

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boisrondevens   100 W

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Re: Spacers for the Bafang BBSHD

Post by boisrondevens » Apr 05 2016 2:06pm

I had similar problem since I had to use a fat bike crank to get the clearance for my motor ( Rv-120)
I have CNC some spacers and I Can make more if you need.
Just give me the sizes.
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