Shall I build my own electric sports tourer / commuter?

Shall I build my own electric sports tourer / commuter?

Author
Discussion

911newbie

Original Poster:

600 posts

266 months

Thursday 10th February 2022
quotequote all
Zero and Energica are stupid expensive.
Triumph tease with shots of their TE-1, and talk about prices the market is willing to pay.... but they're not giving any indications of what that might be, and anyway I'm fed up waiting.

I'm going to see if I can book my unrestricted test in Easter, and if I pass I want to move to a bike I can ride on a motorway comfortably at 70 mph, with a range of say 100 miles mixed, or 80 miles m'way.

Shall I just go buy a bike with a seized engine, and convert it to electric ?
Would 50kW / 70 HP be enough ?

anonymous-user

60 months

Thursday 10th February 2022
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What you gonna do? Implant an old washing machine motor or something?

911newbie

Original Poster:

600 posts

266 months

Thursday 10th February 2022
quotequote all
Yasa P400 - 60 kW continuous, or up to 160 kW for a short while. (yeah, I won't be doing that)
Very compact. Pricey though. Really nice quality motors though.

Or Avid also do a 60 kW output motor.

AEM up in Newcastle do a nice motor which might just fit inside a frame at 234mm wide. Peak power of 300 kW at 700V. I dunno, could that be a tad excessive ...?

Emrax do a nice compact motor, 60+ kW continuous. Can be configured at various voltages.I can use a DTI controller with it. Would easy fit in a frame at less than 100 mm thick.
Slightly larger motor at 107kW continuous...

911newbie

Original Poster:

600 posts

266 months

Thursday 10th February 2022
quotequote all
Thinking about this for a mo - I see where you are coming from re using recovered bits and bobs.

I think I wouldn't mind spending some cash on new kit to get a good result, like new motors/controllers/battery pack. A bike which will reliably get me round, last a few years, and have enough power & range. So no need for trips to the recycling centre to search for knackered washing machines.

Not that there is anything wrong with using old recovered bits and bobs.
If this is all too much of a ball ache, I could just buy a normal petrol bike to use, while I make loads of stupid mistakes building a washing machine special.
This would in fact be the sensible way to do it.

Iminquarantine

2,168 posts

50 months

Friday 11th February 2022
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Isn't where to put the battery a bigger thing to think about than the motor?

Ed.

2,174 posts

244 months

Friday 11th February 2022
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Iminquarantine said:
Isn't where to put the battery a bigger thing to think about than the motor?
Presumably where the engine goes on conventional bikes since the motor is relatively small, at least that's what they do on the zero and others.

911newbie

Original Poster:

600 posts

266 months

Friday 11th February 2022
quotequote all
Yes, probably the place for the heavy dense battery is low down and central to keep CoG centralish to the bike.
Zero, Energica and Triumph all place their batteries where an ICE would be otherwise.

I'm talking to a company near to me about a battery pack. They are really really good at this stuff, so I'll probably buy from them. By the time I make a load of mistakes it'll end up being cheaper to pay them to do the battery pack.

I'm trying to convince myself this will be mostly plug and play, but I know there is going to be lots of modifying the frame, swapping sprockets etc.
But really, it'll be the hands on fiddling and sorting of problems that will be most useful for me.

Biker 1

7,859 posts

125 months

Friday 11th February 2022
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On the face of it this project looks like a proper can of worms. However, I would love to see a full project report on this fine forum with photos, progress, pros/cons, safety issues etc.
I suppose apart from the obvious technical challenges, how does it work with type approval, MOT, VED etc??
Go for it!

mikey_b

2,067 posts

51 months

Friday 11th February 2022
quotequote all
Biker 1 said:
On the face of it this project looks like a proper can of worms. However, I would love to see a full project report on this fine forum with photos, progress, pros/cons, safety issues etc.
I suppose apart from the obvious technical challenges, how does it work with type approval, MOT, VED etc??
Go for it!
SVA, presumably - this sort of project is exactly what they are for.

Scobblelotcher

1,724 posts

118 months

Friday 11th February 2022
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I’d love to see you attempt this and see how you’ll overcome the various engineering challenges.

I’d consider weight a very important factor and have a target weight. Too much weight can make bikes not fun to ride and manoeuvre so it needs to be an important measure.

I also wonder about electronics to keep a bike with a lot of torque at the rear wheel under control!

Stuart Fordyce

1,517 posts

67 months

Friday 11th February 2022
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That's a good point re electronics. A Zero makes as much torque as a Panigale. I rode a Zero years ago when they first came out, the training school I worked was considering it for a big auto license. It was very quick off the line even in Eco mode. One of my colleagues gave it a handful on a roundabout and it high-sided him to hospital.

I love the idea of this. I'm going to electrify my Impreza one day so keen to see how you get on.

vindaloo79

998 posts

86 months

Friday 11th February 2022
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https://youtu.be/gYs_jYUyaoY

I enjoyed watching this self build some time ago

KTMsm

27,481 posts

269 months

Saturday 12th February 2022
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Lets start with the basics

How big an engine (power) do you need ?
How much battery power do you need ?

What do those two cost ?
Can you physically fit them into the frame of a bike you like ?


XR

292 posts

57 months

Saturday 12th February 2022
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A lad near me put this together during lockdown for a bit of quiet green laning I knew he was building this but I was amazed with the quality and execution.

I've ridden a few ev's and I like them, I only rode this around an industrial estate but was very impressed.

Here it is having an MOT and once SVA'd it can be registered, I can put you in touch if you want!