Search found 265 matches

by EVguru
Thu Sep 11, 2008 1:16 pm
Forum: Conversions
Topic: Thoughts/help for a new boy....
Replies: 14
Views: 8334

you mention "direct drive" - would I be right to guess that the inclusion of a gearbox between the electric drive and the final drive would give a greater viable speed range? (since I've been assuming a directly linear relationship between supply voltage and motor speed). To put it simply...
by EVguru
Fri Sep 05, 2008 3:41 pm
Forum: Conversions
Topic: Power steering pump options
Replies: 19
Views: 10131

If you can't find a manual rack and the suspension geometry hasn't been designed around power assist (some cars are almost impossible to steer without assist) then you can sometimes get away with simply fitting the rack with a bypass hose so the fluid just re-circulates.
by EVguru
Fri Sep 05, 2008 3:37 pm
Forum: Conversions
Topic: Contactor coil diode.
Replies: 19
Views: 10293

I really don't like the Big Red Button approach. It simply doesn't belong in a road car. Having experienced a stuck throttle more than once over the years and having heard the experience of others, I seriously doubt if you would remember to use the BRB in an emergency. It takes far too many panic fi...
by EVguru
Thu Sep 04, 2008 9:25 am
Forum: All things battery related
Topic: Lead Acid - the choices
Replies: 11
Views: 14378

Caravan batteries.
by EVguru
Thu Sep 04, 2008 8:58 am
Forum: All things battery related
Topic: Lead Acid - the choices
Replies: 11
Views: 14378

Modern starter batteries are not designed to be discharged more than about 15% on a regular basis. Leaving you lights on just a handful of times can damage the battery to the point that starting becomes marginal. Leisure batteries are a much better choice, but I'd still treat them as a consumable it...
by EVguru
Thu Sep 04, 2008 8:51 am
Forum: All things battery related
Topic: ex milk float to be charged from a domestic supply
Replies: 10
Views: 14656

The Part P regs. have in many cases done nothing for electrical safety. The cost of certification has put many competent 'handyman' type operators out of business and some of those who've filled the gap have just one certified electrician to sign off all the work done by multiple crews (low or even ...
by EVguru
Mon Sep 01, 2008 10:34 am
Forum: General
Topic: Help with thesis idea
Replies: 21
Views: 23377

by EVguru
Fri Aug 29, 2008 9:49 am
Forum: Conversions
Topic: Power/weight ratios
Replies: 45
Views: 24460

Setting some sort of target, ie: clutchless-single-speed, at least gives something to measure against. It just seems to me that you're putting the cart before the horse, or rather the transmission before the vehicle. The targets that would make sense to most potential EV builders are all performanc...
by EVguru
Thu Aug 28, 2008 9:43 pm
Forum: Electric Motor Bikes
Topic: Asking a favour from a NW Vectrix owner please
Replies: 17
Views: 19652

That's Paul Blezzard's (motorcycle journalist) standard Quasar. He brought it along to my house when he came to ride Cedric's machine (2nd time actually, but the first was in the dark). There are some more pictures on the http://www.bikeweb.com site. Paul has long been a 'Feet Forward' proponent and...
by EVguru
Thu Aug 28, 2008 9:39 pm
Forum: Conversions
Topic: Power/weight ratios
Replies: 45
Views: 24460

Working around parts which are far from suitable is to be avoided, in my experience. You've just summed up just about every conversion, many of the parts are unsuitable for the job. They do however exist and can be bought for sums of money within the realms of possibility. I'm struggling to see exa...

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