Kepler Bottom Bracket Friction Drive For Sale (Finally)

Place for dealers to post items for sale.
User avatar
Kepler   1 GW

1 GW
Posts: 3119
Joined: Nov 08 2009 9:22pm
Location: Eastern suburbs Melbourne Australia

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by Kepler » Dec 23 2018 2:36am

Hi Trigger3. Yes still got a couple of units left from the last batch. Will send you a PM.
Current Rides

Lightest true ebike on the planet: ON ROAD https://endless-sphere.com/forums/viewt ... =6&t=74269
eBoost on facebook: http://www.facebook.com/pages/Eboost/200306283342024/
75 Volt 6 kW FUTR Beta 29'er: OFF ROAD

Adried   10 mW

10 mW
Posts: 21
Joined: Dec 27 2010 9:51am

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by Adried » Dec 23 2018 6:03am

Hi Kepler,

Can i buy a throttle interface with pass activation from you?
My own pass censor in combinatie with rc servo does nog worden fine.
I hope you can help me, i have working a long time with this problem with no good results.

User avatar
Kepler   1 GW

1 GW
Posts: 3119
Joined: Nov 08 2009 9:22pm
Location: Eastern suburbs Melbourne Australia

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by Kepler » Dec 25 2018 1:44am

Sure, I can supply this but it is setup for a Vesc which can be calibrated to match the Arduino output.

I am happy to send you the Visuino file if you like. You can then modify the ms output to suit your setup.
Current Rides

Lightest true ebike on the planet: ON ROAD https://endless-sphere.com/forums/viewt ... =6&t=74269
eBoost on facebook: http://www.facebook.com/pages/Eboost/200306283342024/
75 Volt 6 kW FUTR Beta 29'er: OFF ROAD

Adried   10 mW

10 mW
Posts: 21
Joined: Dec 27 2010 9:51am

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by Adried » Dec 25 2018 3:28am

Yes , it is for a vesc 4.12 with friction drive . I would be verry happy if i can buy a plug and play throttle interface from you.
Yesterday i have removed my pedelec setup , now back to basic .

bigun   1 mW

1 mW
Posts: 10
Joined: Jul 16 2016 11:12pm
Location: Northern Cal, Sacramento area

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by bigun » Jan 06 2019 6:21pm

Hi Kepler,
I am impressed with your work, and am interested in purchasing one of your kits. I plan to install on my Novara Mazama. It seems my BB to tire distance is within range, see picture.

My plan is to ride mostly unassisted, but for longer rides I plan to take a battery with me, in a Topeak case on the rear rack. I have several Ego "56V" packs (14s 18650) that I'm hoping to use for this purpose. Not sure if this voltage is within range of the RC motors that are typically used. If not, I'm open to other battery options.

Can you reply with thoughts on the battery, and PM with a kit option cost?
Thanks!
Image
Image

User avatar
Kepler   1 GW

1 GW
Posts: 3119
Joined: Nov 08 2009 9:22pm
Location: Eastern suburbs Melbourne Australia

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by Kepler » Jan 07 2019 6:59pm

Unfortunately I am completely out of stock. I am looking to do another run of drives next month at this stage.

Sorry about that.
Current Rides

Lightest true ebike on the planet: ON ROAD https://endless-sphere.com/forums/viewt ... =6&t=74269
eBoost on facebook: http://www.facebook.com/pages/Eboost/200306283342024/
75 Volt 6 kW FUTR Beta 29'er: OFF ROAD

bigun   1 mW

1 mW
Posts: 10
Joined: Jul 16 2016 11:12pm
Location: Northern Cal, Sacramento area

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by bigun » Jan 07 2019 9:50pm

Kepler wrote:
Jan 07 2019 6:59pm
Unfortunately I am completely out of stock. I am looking to do another run of drives next month at this stage.
No problem - please add me to your interest list. In the meantime I will try to get smarter on available friction motors and the battery options. Thanks.

nlhaines   100 W

100 W
Posts: 119
Joined: Aug 11 2014 3:58pm
Location: Seattle, WA, USA

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by nlhaines » Jan 22 2019 12:21am

Will this work on a hardtail mountain bike if the BB to tire distance is in range?

User avatar
cal3thousand   1.21 GW

1.21 GW
Posts: 3554
Joined: Mar 26 2012 4:47pm
Location: California

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by cal3thousand » Jan 22 2019 5:34pm

nlhaines wrote:
Jan 22 2019 12:21am
Will this work on a hardtail mountain bike if the BB to tire distance is in range?
It should, if you are running street tires and not knobby dirt tires.




@Kepler: Put me on the list for the next batch
Get a Cycle Analyst and a Multimeter, you're still a noob if you don't have at least one of each.

Planning on posting questions or buying anything on this site? Put up your country (at minimum) on your profile. This is a worldwide forum and we haven't reached clairvoyance.

User avatar
Kepler   1 GW

1 GW
Posts: 3119
Joined: Nov 08 2009 9:22pm
Location: Eastern suburbs Melbourne Australia

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by Kepler » Jan 22 2019 5:50pm

Thats correct, it will work fine as long as the tire selection is correct. For quite operation, the centre of the tire needs to be smooth. There are plenty of hybrid tires that also work quite well.

cal3thousand, I have placed you on the list.
Current Rides

Lightest true ebike on the planet: ON ROAD https://endless-sphere.com/forums/viewt ... =6&t=74269
eBoost on facebook: http://www.facebook.com/pages/Eboost/200306283342024/
75 Volt 6 kW FUTR Beta 29'er: OFF ROAD

ModeratelyFastF   10 mW

10 mW
Posts: 28
Joined: Feb 02 2018 5:06pm

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by ModeratelyFastF » Jan 26 2019 1:01am

Still watching this in the hope I have a suitable bike at some point (I'm thinking of a stealth single speed ebike that looked low key enough to safely lock up in a big city without getting knicked).

A question: are there any build threads around? I know all about Kepler's results, but I'd like to see how average punters have got on putting a Kepler build together and what their experiences have been using it.

Aeron   100 mW

100 mW
Posts: 48
Joined: Jun 12 2018 8:04am

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by Aeron » Jan 30 2019 4:50pm

ModeratelyFastF wrote:
Jan 26 2019 1:01am
A question: are there any build threads around? I know all about Kepler's results, but I'd like to see how average punters have got on putting a Kepler build together and what their experiences have been using it.
It's not a proper thread and I didn't really use the drive, but I'm an average bloke with a not so average bike to mount the thing on.
I initially could not mount it on the crank side because of the chain line (1x10 drivetrain), but the non-crank side was no better because of my bottom bracket (BB-770).
However, it fits on the seat tube, using motorbike handlebar thingies as tube clamps. I had to machine a couple of M10 to M4 adapter (they are glued in the M10 adapters of the thingies and the drive's mounting bolds threads in there) but it's almost plug and play.

Image
Image

It is roughly adjusted, and I hope the slightly off-centered motor won't be a problem. For those having trouble with the bottom bracket mounting option, it may be an alternative.
Last edited by Aeron on Feb 01 2019 4:58am, edited 2 times in total.

User avatar
Kepler   1 GW

1 GW
Posts: 3119
Joined: Nov 08 2009 9:22pm
Location: Eastern suburbs Melbourne Australia

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by Kepler » Jan 30 2019 9:33pm

Nicely done. This was the reason I made main mounting plate in two halves.

Just one thing with this mounting position, you will need to move the pivot point further to the front of the bike if you want it be able climb the tire.
IMG_20190127_143608_Kep.jpg
Alternately you can leave it where it is but in permanent contact with the tire adjusted so it doesn't slip
Current Rides

Lightest true ebike on the planet: ON ROAD https://endless-sphere.com/forums/viewt ... =6&t=74269
eBoost on facebook: http://www.facebook.com/pages/Eboost/200306283342024/
75 Volt 6 kW FUTR Beta 29'er: OFF ROAD

Aeron   100 mW

100 mW
Posts: 48
Joined: Jun 12 2018 8:04am

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by Aeron » Jan 31 2019 1:10pm

Thanks for the advice. The motor currently does not touch the tire (but is very close). For now, I will leave it there, because it would be a headache to move it forward.

I would have to drill and tap the brackets, which is the easy part.
The spring adjustment system cannot fit much forward, and I unfortunately cannot put it on the "outside" (in the pictures, it is "inside"), otherwise the motor would be too much on the left of the bike and would not touch the tire anymore. That means I would need to mill the brackets, which I don't have the proper tools for. So I hope the small margin I have to lower the motor will be enough :)
Kepler wrote:
Jan 30 2019 9:33pm
This was the reason I made main mounting plate in two halves.
And that is, to me, one of the best things on that unit's design: it is very adaptable to any frame/motor :thumb: (and even a normal frame with weird components)

Aeron   100 mW

100 mW
Posts: 48
Joined: Jun 12 2018 8:04am

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by Aeron » Feb 08 2019 12:58pm

Aeron wrote:
Jan 31 2019 1:10pm
Kepler wrote:
Jan 30 2019 9:33pm
Just one thing with this mounting position, you will need to move the pivot point further to the front of the bike if you want it be able climb the tire.
For now, I will leave it there, because it would be a headache to move it forward.
I just understood why I would not work... :roll:
I'll try to place the drive above the wheel (as I have more room for it to move around), hopefully it'll work.

bigun   1 mW

1 mW
Posts: 10
Joined: Jul 16 2016 11:12pm
Location: Northern Cal, Sacramento area

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by bigun » Feb 09 2019 3:56pm

Still interested in buying. PLease update if you have an estimated date for the next batch, thank you.

Kiwi3   1 µW

1 µW
Posts: 3
Joined: Feb 08 2019 7:23pm

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by Kiwi3 » Feb 13 2019 4:00am

Hello Kepler, great to read of your innovative design and dedicated testing, building a platform for the rest of us to enjoy this tech, so thank you for that! I have found a work colleague interested in doing a parallel build alongside me, though he has yet to measure his frame to check suitability, but could you please put us on your list for two mounts, and any other helpful guidance and build material you could supply to us in NZ, and let us know your ordering process? Thank you!

nlhaines   100 W

100 W
Posts: 119
Joined: Aug 11 2014 3:58pm
Location: Seattle, WA, USA

Re: Kepler Bottom Bracket Friction Drive For Sale (Finally)

Post by nlhaines » Feb 17 2019 7:35pm

I would like to be added to the list as well, for 1 kit. Thanks.

Post Reply