Kepler eboost. The journey and evolution

[adrian_sm]

Looking good. Perfect bike for one of your drives.

Sounds like the release of your interface is imminent. Congratulations. Now the fun begins.

Is that the throttle button on the left?

 

[voicecoils]

Wow John the eboost is looking great!

Quite the evolution from what was on the New Inventors to a nearly turn-key product.

I hope you saved a bit of space in your hand luggage to bring a drive with you on your visit to Sydney

If so, I have a number of 5S Zippy 15C packs and there are all manner of bikes at the shop.

 

[cwah]

I want ooonnne

 

[Jehu]

I want ooonnne

+1
How far are you from putting these on the market?
Richard

 

[Kepler]

Looking good. Perfect bike for one of your drives.

Sounds like the release of your interface is imminent. Congratulations. Now the fun begins.

Is that the throttle button on the left?

Thanks Adrian,

Yes need to look at some volume now to get the price down.

That is the button on the left. The two top buttons are for menu navigation and setup. The lower button is the throttle. Still needs some packaging work but electronically its working perfectly now.

 

[Kepler]

Wow John the eboost is looking great!

Quite the evolution from what was on the New Inventors to a nearly turn-key product.

I hope you saved a bit of space in your hand luggage to bring a drive with you on your visit to Sydney

If so, I have a number of 5S Zippy 15C packs and there are all manner of bikes at the shop.

Thanks Abe,

I will definietly pack in a drive for some show and tell What plugs are on your zippys?

 

[Kepler]

I want ooonnne

+1
How far are you from putting these on the market?
Richard

Getting the funds together to do a run of 50. I do have a couple of drive mechanics in stock but another batch interfaces need to be made. These are about 4 weeks off.

 

[LI-ghtcycle]

Glad to hear the interface & throttle are getting closer to market!

I'm very interested to see how they work out!

 

[voicecoils]

Wow John the eboost is looking great!

Quite the evolution from what was on the New Inventors to a nearly turn-key product.

I hope you saved a bit of space in your hand luggage to bring a drive with you on your visit to Sydney

If so, I have a number of 5S Zippy 15C packs and there are all manner of bikes at the shop.

Thanks Abe,

I will definietly pack in a drive for some show and tell What plugs are on your zippys?

Cool!

4mm bullets and patch cables to Anderson power pole pp45 if needed.

 

[voicecoils]

Had a nice visit at Glow Worm Bicycles today from Kepler who came to show his eboost system. Sydney-local Nanoha (a early generation Kepler drive owner) stopped by for a look at the latest generation as well.

I was really impressed with the interface, controls and smooth power delivery. This is the first friction drive I've tried since the old EV-warrior systems :lol: and of course there is no comparison!

It only took Kepler about 10 minutes to fit, the fastest conversion I've ever seen!

Fitted up to a mid-spec Kona flat bar roadie, it seemed like a good match.




Glow Worm's keen to order a drive once available to do a longer evaluation on and hopefully carry in the future for anyone interested in a kit that comes on and off quickly and makes for a super light electric bike. Thanks for taking the time to visit and show off your hard work John!

 

[full-throttle]

10 minutes That's super quick!

 

[41south]

Great to see this still moving forward (so to speak 8) ) Great work guys - keep it up!

 

[Kepler]

Had a nice visit at Glow Worm Bicycles today from Kepler who came to show his eboost system. Sydney-local Nanoha (a early generation Kepler drive owner) stopped by for a look at the latest generation as well.

I was really impressed with the interface, controls and smooth power delivery. This is the first friction drive I've tried since the old EV-warrior systems :lol: and of course there is no comparison!

It only took Kepler about 10 minutes to fit, the fastest conversion I've ever seen!

Fitted up to a mid-spec Kona flat bar roadie, it seemed like a good match.


View attachment 1

Glow Worm's keen to order a drive once available to do a longer evaluation on and hopefully carry in the future for anyone interested in a kit that comes on and off quickly and makes for a super light electric bike. Thanks for taking the time to visit and show off your hard work John!

Great to catch up yesterday Voicecoils. The shop looks great and seems well stocked with some excellent products.

Glad you liked the drive. Its been a long time coming to get it to this stage. Really pleased with the operation of the interface but its always good to get feedback from first time users as it is quite different to a traditional type throttle arrangement.

The interface has a number of programming options with one of the main ones being power level. There are three options here, low, medium and high. Voicecoil's first ride was in the low power setting which basically conforms to AUST legal power limits. Comments were that the power felt quite adequate with good speed on flat ground but still with reasonable speed and assist on hills. Next I set the power level to Medium which is around 850W max. Voicecoils took it for another quick spin and returned with a smile and commenting "yep I like that better" We ran out of time to demonstrate the high power setting but basically this gives you a 1500W limit. Personally I think this too much much for a friction drive as it is very hard on tires and needs a good grip tape to ensure there is no slip. But the option is there for those power hungry users.

Thanks again for your time Yesterday Voicecoils and really appreciate the feedback.

 

[Kepler]

Testing a new battery that is a really nice size for this drive. Pack is by Desire Power and is rated at 35C continuous and 70C burst which is close to the performance of Nanotec's.
Blows me away that the pack is rated at 290A continuous and 581A Burst.

Pack weight is 980g and will be good for a range of 15 to 20km on this drive with just a little bit of peddling.

 

[gogo]

From the FAQ at http://www.desire-battery.com/FAQ-1.html :
*Longer life cycle under proper usage up to 200 times

*trombone wa-wa*

 

[Kepler]

Development continues on the interface with the latest design basically setup to become part of the ESC. This makes for a much neater installation and becomes a complete plug and play unit. Latest features include motor speed sensing as well as wheel speed sensing so that wheel to motor speed can be monitored for the purpose of reducing slip and the associated accelerated tire wear. Software is currently under development to optimize this new feature.

The interface also has a tail light output that can be controlled from 3 button pad on the handle bars.

At the moment these interfaces are still hand built so everyone I get goes straight into a drive assemblies that I have on order. Hopefully in the near future I will be able to offer these as another option for those wanting a specific friction drive interface for there own creations.

 

[41south]

The excellent work continues

 

[cwah]

Could the Kepler eboost fits a Brompton bike?

 

[Kepler]

I think the Brompton folder is too long in the tail for a straight forward installation. I was looking at one of these the other day for a potential client. It could be made to fit with a little modification though. The mud guard would need to be modified or removed also.

 

[cwah]

Thanks Kepler. I'm really interested in doing this mod.

Do you know how I could do that and keep the brompton ability to roll once folded?

Many thanks

 

[Hillhater]

Cwah, why not just consider a different folder ?
Keplers:-

 

[Kepler]

Interesting you mention that Hillhater. I talked the client out of the Brompton and sold him the bike pictured plus a fully setup drive that included the large 8300 mah pack and charger. Fully built tested and delivered for less then the cost of the Bromton alone.

 

[cwah]

Hillhater, another folder is completely possible. But what's the difference between the Kepler eboost and the Commuter booster from Adrian? I mean except from the design, is it the same motor and same everything?

 

[Hillhater]

If you compare the two, they operate on the same principle ..Friction drive, RC motor and ESC,...with a few differences mainly around the mounting method.
The Eboost is intended to attach to the seat post as a complete unit ( motor, ESC, Battery etc), and can be very quickly removed for security storage, recharging etc.
The Commuter booster is a more "Stealthy" (hidden) installation attached to the frame down tube , with a separate battery & ESC location ( eg: seat bag) and not intended to be removed frequently.
Each has their merits, but both will offer similar performance since the electrical components can be identical.

 

[kevo]

Another difference is the Commuter Booster allows the use of a rack, while the original Eboost does not. I think Kepler offers a mid frame version now. Your bike geometry may help you decide as both have limitations on what frames are supported. I have both, and think they are both brilliant with fantastic support by Kepler and Adrian. You will not be disappointed.