Electric motorbike racing

[GEOFFREY]

Well done Jonathan. I have been in Plymouth to celebrate? our golden wedding aniversary since Tuesday, so have only just seen your posts. The pics look fantastic, the bike, ally part and the crew, but why were the others all in shirt sleeves, and you in your winter woolies? Seriously though that really is a great perfomance and I hope that you repeat your success in Moto-E. G.

[AndyGuid]

Excellent stuff Jonathan!

[dazza]

well done lads some great shots...jonathan looks to be supervising again

[Jonathan]

Thanks for the comments. If any of you are going to be near one of the races let me know and I can show you the bike close up. We'll be at Silverstone, Donnington, Anglesea, Portimao (Portugal) somewhere in Germany and maybe Assen (Netherlands). The first race is in the very beginning of August - ish, dates have not been confirmed yet.

The pics look fantastic, the bike, ally part and the crew, but why were the others all in shirt sleeves, and you in your winter woolies?

I think I was still recovering from earlier in the week:
https://www.facebook.com/UoNElectric...8654824299305/

Here are some more parts I machined for the bike - some sprockets:



They were surprisingly easy - I just used a 6mm cutter for the main profile and a simple V-shaped tool I made from silver steel for the chamfer. Next time I will add some pockets to save weight. For these I was in a hurry so didn't bother.

They worked, but were a bit wobbly as the aluminium plate wasn't terribly flat! The bike has done about 100 miles on the TT course and the 6082T6 aluminium hasn't worn much at all, so it doesn't seem worthwhile splashing out on 7075 grade. I think I'll just order some tooling plate to guarantee sufficient flatness and make plenty.

[Jonathan]

We just won at the Nurburgring!!



Had some weird problems with our motor controller (resulting in us taking the bike to bits 3 times over the course of the weekend), so we had to limit both the torque and speed to 66%, but even so we were still just only 4 seconds a lap behind the superbikes.

For this race I made a new rear sprocket plus some titanium M12 bolts so that we can have data logging of the suspension:

[dazza]

well done,and nice work on the parts.makes me miss my mill/router

[Blackrat]

excellent !

[Jonathan]

About time I updated this...

We won the races in Anglesey and Pembrey, messed up in Cadwell and won all three races in Portimao which meant we won the overall championship. We got a top speed of 145mph in Portimao, though still limited to 50% power output due to issues with the motor controller, so the focus is to make our own now.

In terms of machining, I made several more sprockets - this time from tooling plate and they held up well. Also modified the water cooling block on the motor, as the rider ground it down a bit when leaning the bike over.

Some pictures here:



... and the obligatory action shots:



Can't wait for the TT next year now - so many things we can work on and improve. The current plan is to make some small changes to this bike and make a whole new bike, so we can take two to the TT. I'm keen to design a frame that could be machined from only CNC milled parts, so no welding and bending aluminium tube. I think it would give some useful design possibilities, in addition to making it easier to replace parts when the inevitable crash happens.

https://www.facebook.com/miquel.gime...6494572616962/

P.S. If anyone has ~£5000 sloshing around, let me know and you can sponsor us

[CharlieRam]

I must say this is pretty cool, I wish I'd seen this earlier, I live in Derby and Donnington isn't that far, congratulations and I look forward to your success next year.
Cheers, Charlie