Fitting hub motor to downhill frame (no dropouts?)
- Thread starter jonnybump
- Start date
nieles
10 kW
something like this maybe?
https://endless-sphere.com/forums/viewtopic.php?f=6&t=33767&p=954250&hilit=kiwi+dropout#p954250
https://endless-sphere.com/forums/viewtopic.php?f=6&t=33767&p=954250&hilit=kiwi+dropout#p954250
LewTwo
1 MW
Grin Technologies has a new hub motor designed just for you .. well people that have a similar problem:
http://www.ebikes.ca/grin-all-axle-hub.html
Edit:
I just notice theirs seems to be a front hub (as well as out of stock). Sorry
http://www.ebikes.ca/grin-all-axle-hub.html
Edit:
I just notice theirs seems to be a front hub (as well as out of stock). Sorry
Found out these are called thru-axle frames by reading the link on the first reply (thanks). Looks like it'd mean having to use a mid drive - don't really fancy having to fabricate lots of bits to make a hub motor fit.
Eek, just noticed as well that this frame uses a 100mm ISIS BB which makes finding a mid drive kit that much more difficult!
Eek, just noticed as well that this frame uses a 100mm ISIS BB which makes finding a mid drive kit that much more difficult!
LewTwo
1 MW
I think that ISIS uses a standard British BB shell threading. So something like a Bafang Fat Bike Midrive might fit (as it replaces the BB anyway).jonnybump said:
ScooterMan101
1 MW
Since it is a Full Suspension Frame , you can take off the rear swingarm then,
You can have a Machinist, and , or, Fabricator make you a whole new swing arm.
If you do that , make the dropouts horizontally, so as to also have a built in torque arm,
look into how many motorcycle swing arms are made .
Also make the swing arm made in such a way so that you can use big front Chainrings, like minimum 50 tooth, but even better 53 tooth outer chainring, so when you get up to speed, your legs will still put in a little effort/your legs will be spinning at a proper/good cadence.
I am in the same situation as you, with a full suspension frame just sitting in my Apartment , not being used , because it is a through axle design. so there is allot of interest on my part for what you can come up with and how much someone will charge you to make a whole new swing arm.
You can have a Machinist, and , or, Fabricator make you a whole new swing arm.
If you do that , make the dropouts horizontally, so as to also have a built in torque arm,
look into how many motorcycle swing arms are made .
Also make the swing arm made in such a way so that you can use big front Chainrings, like minimum 50 tooth, but even better 53 tooth outer chainring, so when you get up to speed, your legs will still put in a little effort/your legs will be spinning at a proper/good cadence.
I am in the same situation as you, with a full suspension frame just sitting in my Apartment , not being used , because it is a through axle design. so there is allot of interest on my part for what you can come up with and how much someone will charge you to make a whole new swing arm.
jonnybump said:Eyeing up a frame, and this one has popped up - but I can't figure how I'd fit a hub motor to it as it doesn't look like it has dropouts. Would it be possible? Here's a photo of where the axle goes -
Thanks
Jon
ScooterMan101
1 MW
Yea the problem is it is a front hub.
Had Justin designed / made a Rear , Geared, hub motor that weighs less than 8 pounds
Justin would have had a real winner !
The first person who Makes/Design's/ Sells , or at least sells a
Rear , Geared , Lighter Weight , Hub motor that has a cassette freehub body, that can accept from 9 up to 11 speed cassettes
Is
Going to have a very advantageous Business Model for most future conversions.
Even Road bike Frames are now being made/sold with Through Axles !
Had Justin designed / made a Rear , Geared, hub motor that weighs less than 8 pounds
Justin would have had a real winner !
The first person who Makes/Design's/ Sells , or at least sells a
Rear , Geared , Lighter Weight , Hub motor that has a cassette freehub body, that can accept from 9 up to 11 speed cassettes
Is
Going to have a very advantageous Business Model for most future conversions.
Even Road bike Frames are now being made/sold with Through Axles !
LewTwo said:Grin Technologies has a new hub motor designed just for you .. well people that have a similar problem:
http://www.ebikes.ca/grin-all-axle-hub.html
Edit:
I just notice theirs seems to be a front hub (as well as out of stock). Sorry
Lurkin
100 kW
Or consider middrive options?
Samd
10 MW
Have done plenty.
Whats the dropout width on it? 135 or 150?
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Whats the dropout width on it? 135 or 150?
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Chalo
100 TW
Chinese hub motors are one kind of poorly designed garbage. Gimmicky through-axle suspension bike frames are another kind of poorly designed garbage. They were never intended to work with each other-- they both barely work as it is when used as intended. But where there's a will, there's a way... and a colossal waste of time and money, too.
Do yourself a favor. If you want to use that frame, don't use a hub motor. If you want to use a hub motor, find a better frame to do that job.
Do yourself a favor. If you want to use that frame, don't use a hub motor. If you want to use a hub motor, find a better frame to do that job.
LewTwo said:Grin Technologies has a new hub motor designed just for you .. well people that have a similar problem:
http://www.ebikes.ca/grin-all-axle-hub.html
Edit:
I just notice theirs seems to be a front hub (as well as out of stock). Sorry
possible fix for front/rear issue, plus how to order (not out of stock, isin beta)
https://endless-sphere.com/forums/viewtopic.php?f=30&t=62327&hilit=grin+thru+axle
Samd
10 MW
150 is a cinch. Just fit torque plates internally.
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Samd
10 MW
Here's an example of a GT fury I did last year.
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Sent from my iPhone using Tapatalk
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