Electric motorbike racing

**Jonathan** · 04-06-2015

Originally Posted by JAZZCNC

How much does it weigh Jonathan.? The squareness makes it look heavy but sure it's not.!

Got any scales?

Seriously, we've not had the bike all together yet so it's not been weighed and it doesn't look like there are scales for bikes on this island! We'll weigh it when we can, but I guess about 230-240kg. The batteries are the main weight at ~87kg. The frame hardly weighs anything - it's 7xxx series aluminium.

Can anyone spot the bits I made ;)

**JAZZCNC** · 04-06-2015

Originally Posted by Jonathan

Can anyone spot the bits I made ;)

Would that be for hanging onto.?

Don't they have a Minimum weight classification for Electric bike racing.? They do for the smelly versions.!

**Skipsoaring** · 04-06-2015

Brilliant work Jonathan and team!

From an ex superbike smelly racer!

**Jonathan** · 12-06-2015

I've had a mad last two weeks or so - but we did it! The bike survived the TT ... we blew up plenty of bits between races in testing and had problems with the bike cutting out (10 times!) during the race, but were still the fastest university.

Must remember to buy more cooling hoses for next time, or hire the same van

Originally Posted by JAZZCNC

Would that be for hanging onto.?

Yep, I also made the water cooling block below by borrowing my friend's CNC router. We were nowhere near finishing so we took my mini lathe in the van. Almost everyone who passed our box said 'look, they have a lathe!'... you'd think they'd never seen one before. The lathe proved just as useful to other teams as us - I think I helped out 5 different teams with it, including skimming a shaft from a sidecar.

Next we're racing in a series called 'Moto-E' in the UK and Europe.

**Boyan Silyavski** · 12-06-2015

That's a beautiful piece of aluminum. Must be fun at the competition.

**Skipsoaring** · 13-06-2015

Congrats to you and the team Jon. Fantastic achievement and enjoy Moto-E!

**GEOFFREY** · 13-06-2015

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** · 14-06-2015

Excellent stuff Jonathan!

**Jonathan** · 14-06-2015

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.

Originally Posted by GEOFFREY

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.