Carbon FATbike BBSHD

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bbq870
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Carbon FATbike BBSHD

Post by bbq870 » Dec 06, 2015 1:08 am

hello everybody.
I am reading this forum a while now and I think I´m ready to start my Fatbike build.
It will be a carbon fatbike with carbon wheels.
the motor will be the new Bafang 1000W middrive BBSHD.

I have some questions now, where I didn´t find an answer in other threads...
is it possible to use carbon rims on a 1000W ebike?
do I need stronger spokes as normal?


plan A.
the manufacturer can STRENGTHEN the rims with extra layers of carbon.
(not sure why he´s doing that, maybe he plans to build ebikes-rims in the future)
Bildschirmfoto 2015-12-06 um 14.20.58.png
Bildschirmfoto 2015-12-06 um 14.20.58.png (237.91 KiB) Viewed 936 times
plan B.
I could get trispoke carbon wheels also, they seem stronger but.....
1.price is double than normal wheel.
2. no IHG (internal gear hub) possible for those rims.
3. I´m not convinced by their look so far...


cheers!
Bildschirmfoto 2015-12-06 um 14.16.31.png
Bildschirmfoto 2015-12-06 um 14.16.31.png (247.99 KiB) Viewed 936 times

Phife
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Re: Carbon FATbike BBSHD

Post by Phife » Dec 06, 2015 10:49 am

Are you sure the BBSHD will even fit in a Carbon BB shell? I know that the BB shells on normal carbon bikes are too thick for the BBS02 to fit. I suspect there will be a similar issue here.
2008 Full Suspension Giant Reign 2 with 48v 750W BBS02. Click Here
2014 Specialized Stumpjumper Comp Evo FSR with Luna Cycle 3000w Mid Drive, 52V 20ah Backpack Battery. Click Here

bbq870
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Re: Carbon FATbike BBSHD

Post by bbq870 » Dec 06, 2015 11:50 am

do you mean the width of the BB?
it will be 120mm wide.

edit:
width=inner diameter?
I don't know that measurement. I thought all crancsets will fit.

bbq870
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Re: Carbon FATbike BBSHD

Post by bbq870 » Dec 06, 2015 12:06 pm

here is a picture of the frame
image.jpg
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WoodlandHills
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Re: Carbon FATbike BBSHD

Post by WoodlandHills » Dec 06, 2015 12:34 pm

It looks like the material around the BB is too thick for the drive: the wall thickness is too great for the space allowed by the drive. Also it looks like the position of the down tube will force the drive to hang below the BB and not in front.

Phife
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Re: Carbon FATbike BBSHD

Post by Phife » Dec 06, 2015 12:42 pm

I mean the thickness of the carbon around the BB Shell. In your picture it is the black carbon around the metal ring. I dont remember the details, I just remember reading that some people on here couldnt get a BBS02 on any carbon frame bike. Not sure if the HD is any different.
2008 Full Suspension Giant Reign 2 with 48v 750W BBS02. Click Here
2014 Specialized Stumpjumper Comp Evo FSR with Luna Cycle 3000w Mid Drive, 52V 20ah Backpack Battery. Click Here

bbq870
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Re: Carbon FATbike BBSHD

Post by bbq870 » Dec 06, 2015 10:37 pm

:cry: :cry: :cry:
that is NOT good.... thanks for the advise!
hmm. its too expensive to "just try". maybe I need plan B for the motor also...
maybe build a "DUAL drive Tesla bike" with 2x hubmotor :evil:

but for the RIMS...
has anyone concerns about the strength of carbon rims?

cheers

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Green Machine
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Re: Carbon FATbike BBSHD

Post by Green Machine » Jun 13, 2016 12:24 am

hey i fell into this same thing....

i got a beautiful carbon mountain bike frame only to find the bbshd would not fit....

no problem i just went with a cyclone and it fit beautiful.....

check out the bike here:

https://www.youtube.com/watch?v=BKpsi-MDxto

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