Carbon frame rear hub kit?

[flik9999]

Hey my road bike is an epic 92 specialised. This is a very early carbon frame with alloy lugs and carbpn tubes.

Lovely bike, but im lazy. Would it be able to handle a cheap 500w cyclotricoty rear hub if I also installed torque arms.

It has a standard bb which js made of loghtweight alluminium.

 

[Woosh]

you need to sort out where you want to mount the heavy battery first and is there any special reason to go for a heavy lump of a direct drive motor?

 

[flik9999]

Cheap and wanna go 25mph

 

[flik9999]

Ill mount battery on a rack

 

[flik9999]

I have a 36v bottle battery left over from my old ebike. Iv heard that there really reliable, i had a mid drive but it went boom after using it for 3 months

 

[vfr400]

Only a nut case would fit a Cyclotricity 500w kit to a carbon fibre frame! The motor is massive. What's the point of spoiling a light weight bike with an over weight motor.

There's nothing wrong with the Cyclotricity kit, but if you want one, stick it in one of those cheap catalogue bikes that you can get used for about £30.

If you want a kit for your bike, surely an ultra light motor and battery would make more sense.

 

[flik9999]

Would a mid drive work? Im worried the power of it might crack the bb shell?

 

[Woosh]

Would a mid drive work? Im worried the power of it might crack the bb shell?

it's not the power that will crack the shell, it's the weight - inertia is a huge force when you hit a pothole.

 

[vfr400]

There are a lot of complications with fitting mid motors to carbon frames. Normally, you need special adapters in the BB, you need a way of stopping the motor rotating around the BB and sometimes the frame is just too thick at the BB to let the motor in, so you have to grind away and then reinforce/patch the carbon fibre.

A carbon frame is wasted on an electric bike. When you have a motor, you don't need super light weight any more, so if you want to convert a bike to electric bike, get yourself any old bike. Even cheap ones make good conversions as long as they have a triangle frame and disk brakes.

 

[flik9999]

It has the standard 68mm bottom bracket. Its a wierd hybrid frame alluminium lugs and carbon tubes, looks like a steel bike.

Im just wondering if I can use this bike and not have to swap it down to a worst bike. The bike is really good so gears change smoothly, if I want the bike to stop it stops, doesnt have disk brakes but iv mananaged find in london and on dual carriageways at slightly less than 40 mph (slight downhill slope slipstreaming a truck on the a3 in a 40 zone)