Ebike conversion companies?

[Kizza]

Hi

Anyone know of a company or ebike specialist who does ebike conversions for ££ near Kingston upon Thames?

Thanks

 

[Woosh]

we are in Southend if you fancy a day at the seaside

 

[Kizza]

Could do. I'll look at your website. I assume all the costs are on there?

How much do you charge to fit the kit?

 

[Woosh]

the cost is around £75. You can pay for material + time @ £30/H if less.
We don't charge for small parts like bolts, rivnuts, tapes etc.
Alternatively, we can put you in touch with one of the mechanics we know for free if he is nearer to you, you'll pay the guy directly.

 

[Annie12]

Electricbike Conversions in Hertfordshire are a bit nearer to you
01438 986007
They converted one of my bikes and it has been excellent

 

[Kizza]

Electricbike Conversions in Hertfordshire are a bit nearer to you
01438 986007
They converted one of my bikes and it has been excellent

Thanks, that's good to know. I have been looking at their 250w conversions.

One thing on their website, and I can't recall exact wording, says that their 500w motors can easily be restricted to 15mph to be made road legal.

A 500w motor can never be road legal in the UK surely?

 

[Nealh]

Thanks, that's good to know. I have been looking at their 250w conversions.

One thing on their website, and I can't recall exact wording, says that their 500w motors can easily be restricted to 15mph to be made road legal.

A 500w motor can never be road legal in the UK surely?

Correct .

 

[Deleted member 4366]

Those 500W kits make your bike very heavy and more or less impossible to ride without power. I doubt that you would be happy with one anyway, so get a kit with a 250w geared motor.

 

[Kizza]

Electricbike Conversions in Hertfordshire are a bit nearer to you
01438 986007
They converted one of my bikes and it has been excellent

Hi Annie,

Can I ask which conversion you got... 250w?

I asked them about derestricting, for private land use only, and they said it's easy to do but that the bike will top out at 20mph with the 250w motor.

Have you tried this?

And to anyone else reading this:

I'm not sure why it'd top out at 20mph if derestricted. Is this a maximum power output issue?

 

[Deleted member 4366]

Hi Annie,

Can I ask which conversion you got... 250w?

I asked them about derestricting, for private land use only, and they said it's easy to do but that the bike will top out at 20mph with the 250w motor.

Have you tried this?

And to anyone else reading this:

I'm not sure why it'd top out at 20mph if derestricted. Is this a maximum power output issue?

All hub-motors have a maximum speed at their nominal voltage that's independent of power.

 

[Nealh]

As d8veh has said any hub will have it's optimal speed depending on it's quoted rpm/winding.
201rpm = 15mph
260rpm = 19mph
328rpm = 25mph
all +/- 1 mph.
For instance a 36v hub over volted with 48v will give 33% more speed, thought he higher the voltage will increase the optimal rpm as well. Ok for faster level riding but as you hit inclines it will be less efficient and energy is wasted as it is turned in to heat esp if you are going to slow.

 

[anotherkiwi]

Ok for faster level riding but as you hit inclines it will be less efficient and energy is wasted as it is turned in to heat esp if you are going to slow.

This is the bit I can't get a handle on. If you raise the Amps by 33% too then surely everything moves? Extra motor speed is a waste if you are going to go slow...

And of course once you get to around 35-40 km/h air resistance will mean you are using over 500 W just to maintain that speed so even the slightest incline risks bogging the motor down.

 

[Kizza]

Thanks for all the info. Ideally I'd need to try out a 250w conversion to see if it suits me.

I'm hoping 20mph on the flat is acceptable.

Thinking of converting a 10 kg flat bar road bike with a 250w rear hub motor. Pinnacle with 8 gears. It'll just be for nipping around the local area. I already have a Cube which is a beast.

I test rode a Gtech yesterday but was extremely underwhelmed by the performance. It's a great concept and would like to see what it's like unrestricted, which I know is not achievable.

Any observations or advice welcome.