I've been thinking about doing an electric vehicle conversion for a few years now and have now actually started!
The overall goals are to:
- Get road legal
Speed - Not hold traffic up too much.
Range - Initially 5-10 miles (50 would be nice but batteries are expensive!)
It was listed as "running but in need of repair soon" condition. (advisories for: exhaust noise, exhaust blowing, front and rear sprockets worn, chain worn)
It didn't make it home as the head gasket blew after 10km causing it to lose oil quite rapidly! This pretty much guaranteed that it would become an electric bike.
The first plan was to find out how much space is available and work from there.
I've now started stripping it down to see what I will be able to fit in the place of the engine
Having pulled the engine and associated bits out, the bike is MUCH lighter (the engine alone was ~60kg)
I think I should easily beable to fit 10x 4s 16Ah Multistar Li-po under the tank.
Arranged as 20s2p for 74V 32Ah giving just over 2kWh capacity
They are rated as 20C peak 10C continuous, hopefully I will be able to draw 10kW without too many problems (which equates to 5C discharge) I could always add some extra packs if it is not sufficient.
I am struggling a lot, there seem to be very few motors in the UK.
Current options that look possible:
- Used AGNI 95R, the problem being that i'm still not confident about the condition of the used motors that i've seen (either a mildly bent shaft or a grooved commutator and brown from running too hot)
A Motenergy ME1003 imported from the USA
Dragging the bike round with a MXUS3000 bolted into the forks!?! (Probably not powerful enough to be safe on the road but should get it rolling or could supplement another motor)
Dependent on the motor chosen
I will need to add some kind of frame (probably intergrated with the motormount) to the bike as the engine was a load bearing part of the frame
This may well be a long term project (depending on how long it takes to find a motor!)