Childrens ebike conversion

[glassman]

i want to convert my 5 year olds bike into an ebike, she is a proficient cyclist but due to illness has muscle wastage which hinders her, we ride on private tracks so dont have any regulation issues.

we do own a childs oset motorcycle but this does not help build up her muscles hence why an ebike would be better.

i am aware of some dedicated 24inh ebikes by haibike and KTM but they are too large.

I have recently come across this kit that i believe i may be able to fit with minor modifications to her 16inch bike

https://go-e.bike/en/


The can power can also be adjusted via an app which seems ideal as she wont need/want a powerful motor

Before i spend the money i thought i start this post to see if anyone has any thoughts or advice

thanks you

 

[Danidl]

i want to convert my 5 year olds bike into an ebike, she is a proficient cyclist but due to illness has muscle wastage which hinders her, we ride on private tracks so dont have any regulation issues.

we do own a childs oset motorcycle but this does not help build up her muscles hence why an ebike would be better.

i am aware of some dedicated 24inh ebikes by haibike and KTM but they are too large.

I have recently come across this kit that i believe i may be able to fit with minor modifications to her 16inch bike

https://go-e.bike/en/


The can power can also be adjusted via an app which seems ideal as she wont need/want a powerful motor

Before i spend the money i thought i start this post to see if anyone has any thoughts or advice

thanks you

Hi looking at their website it looks as if they are looking for funds for crowd funding and the product exists only as a prototype at present. nice concept . There are a number of these friction drive units in production but this one is the most elegant. Efficiency is not high and wear on the rear tyre is high but that is not a concern here.
What you might consider also is a bolt on powered trailer. These clamp onto the backwheel frame and have a hub motor .

 

[Ruadh495]

There are some front hub motor kits in 16". More complex to fit, of course, but they have the advantage of being available now.

 

[Danidl]

Hi looking at their website it looks as if they are looking for funds for crowd funding and the product exists only as a prototype at present. nice concept . There are a number of these friction drive units in production but this one is the most elegant. Efficiency is not high and wear on the rear tyre is high but that is not a concern here.
What you might consider also is a bolt on powered trailer. These clamp onto the backwheel frame and have a hub motor .

Actually I may have been wrong about the crowd funding , I notice that they have a shop. There is no way that that sized electric motor could develop 800w and even if it could the 200whr battery would be exhausted in 15 minutes. 800w means a current of 40 amps @ 24v . Likewise a range of 40 km is fantasy. I t could be infinite with the motor disengaged.

 

[Deleted member 4366]

It's easy enough to do. A 36v 201rpm Q85 motor should fit OK. Run it at 24v for a maximum of 12 mph. The S-KU65 controller with the LED control panel allows you to set the maximum speed at three levels from pretty slow (6 mph?) to the maximum. You can add a throttle and pedal sensor. There's a very small delay for the power with the pedal assist, so the throttle would probably be necessary, if you think she can manage that. Finally, get Jimmy (Insat) to make you a 7S2P battery with high power cells like 30Q (6Ah) or GA cells (7Ah) and stick it in a little tool bag. The whole kit will weigh 3 kg.

I have this bike that I'd sell for £300. The seat and bars go down to suit a small person, or you can take all the stuff off and put it on any bike with the same size wheels. I can't remember the size of the wheels. I thought 14", but might be 12". It has a throttle and pedal assist, but there's a bit of a delay on the PAS and it only has one speed with the PAS (maximum - 12 mph):

 

[glassman]

Actually I may have been wrong about the crowd funding , I notice that they have a shop. There is no way that that sized electric motor could develop 800w and even if it could the 200whr battery would be exhausted in 15 minutes. 800w means a current of 40 amps @ 24v . Likewise a range of 40 km is fantasy. I t could be infinite with the motor disengaged.

i dont know what to believe now, obviously im not bothered if they are pushing the boundaries with the power and distance claims but i also dont want to be completely hoodwinked.
another issue that someone pointed out was that i may struggle with BB height on such a small frame

 

[glassman]

It's easy enough to do. A 36v 201rpm Q85 motor should fit OK. Run it at 24v for a maximum of 12 mph. The S-KU65 controller with the LED control panel allows you to set the maximum speed at three levels from pretty slow (6 mph?) to the maximum. You can add a throttle and pedal sensor. There's a very small delay for the power with the pedal assist, so the throttle would probably be necessary, if you think she can manage that. Finally, get Jimmy (Insat) to make you a 7S2P battery with high power cells like 30Q (6Ah) or GA cells (7Ah) and stick it in a little tool bag. The whole kit will weigh 3 kg.

I have this bike that I'd sell for £300. The seat and bars go down to suit a small person, or you can take all the stuff off and put it on any bike with the same size wheels. I can't remember the size of the wheels. I thought 14", but might be 12". It has a throttle and pedal assist, but there's a bit of a delay on the PAS and it only has one speed with the PAS (maximum - 12 mph):

this sounds great, though i must confess its all new to me so i am looking for a simple solution..either a full kit or if anyone can point me in the direction of a company that will do a bespoke build that would be great.

another concern is that id like to maximize the use out of any solution hence one of the reasons the Go-e seemed a good idea as it can be moved from bike to bike as she grows or changes discipline.

 

[Nealh]

Outrider 24v Tongxin kit without battery currently on the Bay might be ideal for a light weight child's bike, standing at £30 inc delivery at the mo.
http://www.ebay.co.uk/itm/152304820196?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT

 

[brightonebikes]

I've never suggested one before, but for this application it might work?
Rubbee ?
http://www.rubbee.co.uk/

Sent from here to there with computer wizardry.

 

[Trevormonty]

Have you consider towing her. See Tailgator, worked treat with my son and is surprising capable off road ie beginner MTB tracks. Of course you may need the ebike.