AEVA Forums

I also tested where the rear rotor would end up relative to the existing brake calliper and mounting bracket setup. In the prototype below everything looked like it was going to line up but then I realised the wheel was a bit off centre! So after fixing that, I will now have to use an adapter plate ...

So I originally thought about doing an electric cafe racer motorbike as there’s something appealing about the way they strip everything back to just the essentials and expose the way it all works but I struggled with how to make the batteries look good. In general, EV batteries don’t look that good ...

Richo wrote: ↑Thu, 18 Apr 2019, 13:05 That's ~25km range.

Hi Richo, just wanted to check how you did that calculation. Is this right?

30 cells x 2.3V = 69V x 40Ah = 2.76kWh x 0.8 DOD = 2.208kWh / 88Wh per km = 25km

Thanks!

Cool thanks, those LTO batteries seem pretty good. According to Battery University they have the following characteristics
Seems like they’ve improved cost since that was written?

Hi Martin,

Any chance you could share the name of the certifying engineer you’re using and what the experience has been like? I’m just starting a conversion of a 1989 Yamaha FZR250 using a 6kW hub motor so would love to find out more about your project. Any photos?

Cheers,
Andrew

Chassis: 1989 Yamaha FZR250 2KR Motor: QS 273 6000W V3 hub motor Speed Controller: Kelly KLS7250H Batteries: TBD Top Speed: TBD Range: TBD So it’s been a while but I’m at the beginning stages of my next project. Just bought the donor bike and waiting for it to be transported interstate. Also waiting...

Hi Pumba,

Did you ever go through with your conversion? Would love to see how it turned out!

Cheers,
Andrew

Hi Martin,

Did you manage to find a certifying engineer? I'm thinking of doing a motorbike conversion but want to check what's possible before buying a donor chassis.

Thanks!
Andrew

Hi Tom,

Which controller do you have? I've got the communications kit if you want to play with some of the settings for AXE and DCX controllers.

http://www.alltraxinc.com/Products_ControllerPro.html

Cheers,
Andrew

I also just got my indicators working after struggling for a while. The problem was that I bought LED indicators and needed to either use inline resistors to get a normal flasher relay to work or use an LED flasher. I first bought an LED flasher and wired everything up but it didn't work. Then compl...

Ok so I'm finally back on the road after a long break. Unfortunately the last time I was putting everything back together I accidentally fried my BMS so I've added a distributed MiniBMS system in its place. Seems to all be working fine and will hopefully keep the cells better balanced. Here are some...

Well I finally got around to installing the DC-DC converter and it looks like it's all working properly. I'm now able to ride at night without my 12V circuit dying on me! http://forums.aeva.asn.au/uploads/418/dc-dc.jpg http://forums.aeva.asn.au/uploads/418/dc-dc_side.jpg I've also installed new whee...

Hi Chris, Great project!!! Regarding the bent motor shaft, I saw in a video about similar motors (LEMCO) that you can put whatever shaft you want in them when ordering so you might be able to replace the shaft instead of get a whole new motor. Pulling the motor apart requires special jigs though so ...

Sorry no videos yet but will post the links here when I do.

I bought the converter new old stock on eBay from a surplus place in the US for $50 including shipping. Otherwise they're about $300 new here!

No the diameter is the same but at some stage I'm probably going to adjust gearing again. I changed from 12 to 14 tooth on one of the small sprockets but I think 13 tooth would be ideal. I don't have any adjustment or tensioner on that chain and 13 tooth would give me the right tension without havin...

OK so not much riding going on but I'm adding a DC-DC converter. It's a Vicor VI-231-CV which can output 200W, plenty for what I need. My 12V 5ah accessories battery was running out of juice too quickly when using the headlight. I think this was because the current being drawn was too much for the b...

I've been doing a little bit of riding on the scooter to test how everything is working and so far it's been pretty good. In terms of range I've been consistently getting 30km per charge but I haven't really pushed it yet as there are still some issues with the battery management system. Once that's...

Should I be concerned about the pack's heat? I'm not sure. If you're trying to pull a lot of energy out of the batteries in a short amount of time then maybe. I only mentioned it because the batteries will be enclosed in a box trapping the air inside. Adding fans will help but you might need to con...

Yes very nice 3D work! I'm not an engineer but on some of the designs there doesn't look like there's much room between the batteries and the frame. If the batteries swell the frame will press against the batteries unevenly. Have you considered putting plate on the box or on the ends of the batterie...

Here are some things I learnt at the show today: Mitsubishi have some iMiev at the show and you can test drive one around the back of the exhibition centre. Ask for a VIP pass from the stand inside. Toyota didn't have any plug-in hybrids on their stand but when I asked about them, the person said th...

I used Bruce Elson for an old Vespa scooter I just finished. He also did Electrocycle's first motorbike a while back and a Mercedes B class in the last few months. Everything went smoothly and he was reasonably priced.

Good luck with the conversion. The old van looks great!

OK so the main difficulties that I'm having getting comprehensive or third party property damage are: 1. The scooter is old (1967) 2. It's been converted to electric 3. I'm a learner Some are ok with me being a learner but won't insure old vehicles and others vice versa. Below is a list of insurers ...

Thanks I'll give Shannons another call tomorrow. I tried tonight and the person I spoke to said they would be able to insure it (wohoo) but the area that handle new policies had already closed for the day (damn). I also called NRMA back and explained that other AEVA people had insured their conversi...

Thanks for the link. I did search for "insurance" but that didn't come up for some reason ...

Does anyone know which insurance companies are EV friendly? Unfortunately NRMA just rejected the insurance I originally took out after the underwriters said they don't cater for conversions