Search found 363 matches

by MalcolmB
Mon Feb 23, 2009 2:04 pm
Forum: Cars,Vans and other road vehicles
Topic: Electric Vehicle questionnaire
Replies: 10
Views: 9379

Hi Lloyd

Looks like the same survey as on the mini forum. I've only completed it once though...

Interesting, and a little worrying, that three times as many people voted for hydrogen as electric, especially when hydrogen is electric.

Look forward to seeing the rest of the results.
by MalcolmB
Sun Feb 22, 2009 1:02 pm
Forum: Cars,Vans and other road vehicles
Topic: Heater replacement, capacity and approach.
Replies: 6
Views: 5925

One of the most widely used approaches is to replace the existing heater matrix with cores from ceramic heaters, which are self-regulating. I think there's a thread on it here somewhere, you could try searching for "ceramic". I'm taking a cheap and simple approach. I just removed the heate...
by MalcolmB
Thu Feb 19, 2009 4:28 pm
Forum: Electric Motor Bikes
Topic: New Electric Scooter in the UK with lithium for under 1000 ?
Replies: 8
Views: 11084

Yes, the UrbanMover lithium model has a much more credible 50 mile maximum range and 42 mph top speed from a 2500 Wh pack and 3000 W motor.
by MalcolmB
Thu Feb 19, 2009 3:26 pm
Forum: Electric Motor Bikes
Topic: New Electric Scooter in the UK with lithium for under 1000 ?
Replies: 8
Views: 11084

It's good to see an EV business setting up so close to home, but it really annoys me when I see such ridiculously exaggerated figures for performance and range. It will just backfire in the long run. For example: The top-of-the-range Elecscoot–4 (price £3495) "can reach speeds in exce...
by MalcolmB
Wed Feb 04, 2009 11:34 am
Forum: Cars,Vans and other road vehicles
Topic: BRM Bee Four? Code named Watt4
Replies: 1
Views: 3553

Haven't heard any news myself, but there's an email address for enquiries on the Bee Automobiles' website: http://www.beeautomobiles.com/
by MalcolmB
Wed Feb 04, 2009 11:06 am
Forum: All things battery related
Topic: Lead acid battery temperature tests
Replies: 9
Views: 7284

Very useful results there Bob. I've heard about EV racers preheating their batteries, but didn't realise it could make such a difference. I do know from personal experience that the range of my bike is almost halved at 0ºC It raises a couple of questions though: Will frequent heating of batteries...
by MalcolmB
Tue Feb 03, 2009 2:25 pm
Forum: Electric Motor Bikes
Topic: Electric dirt bike base ?
Replies: 2
Views: 7838

Hi Danny The Derbi Senda always looked like a good candidate to me. Readily available second-hand in 50cc and 125cc versions, fairly light, and they also do motard variants which should have considerably lower rolling resistance than the trails version. I think Todd Kollin at Electric Motorsport did...
by MalcolmB
Mon Jan 19, 2009 12:38 pm
Forum: Conversions
Topic: Another mini conversion
Replies: 34
Views: 1599

Thanks for the reassurance Jon. Yes, it was the 4qd site that actually sparked my interest in this approach originally. I'm planning to use a single controller and run the motors in parallel. I did consider using series/parallel switching, but then realised that it would be a lot simpler, and probab...
by MalcolmB
Sat Jan 17, 2009 5:58 pm
Forum: Conversions
Topic: Another mini conversion
Replies: 34
Views: 1599

Managed to do some testing on my motors today. I took out the bolts from the end plate that carries the brushes and used a couple of sash cramps to clamp the brush plate at various angles to see what effect advancing and retarding the brush timing has on rpm. To advance the timing you rotate the bru...
by MalcolmB
Thu Jan 15, 2009 10:47 am
Forum: General
Topic: Is this the end of the BVS?
Replies: 7
Views: 6880

Will the BVS be issueing credits to its Members for not receiving the benefits of Membership Dave, I don't think this is helping matters. Surely it's better to fix what's wrong than to throw away what we've got because it doesn't quite work the way we want? You've been really helpful to me and to o...

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