Search found 103 matches

by bobc
Thu Nov 06, 2008 11:51 pm
Forum: General
Topic: Multiple motor & controller approach?
Replies: 87
Views: 62646

I've bought a couple of these motors & will be trying to make a power converter for a string of 5. that's 400A (!) I'll let you know how I get on... plan at the moment is to make a front end current controlled buck converter followed by a fundamental frequency current source inverter (MOSFETs) c...
by bobc
Tue Nov 04, 2008 1:30 pm
Forum: General
Topic: Multiple motor & controller approach?
Replies: 87
Views: 62646

Problem with these things from a greenpower perspective is that they're too good; anything over 400W output will end up at lethal speeds with the little darlings in..... Present greenpower motor is 240W but gets run up to twice that, & we hit max speed of 42mph at the final. You really don't wan...
by bobc
Tue Nov 04, 2008 1:30 pm
Forum: General
Topic: Multiple motor & controller approach?
Replies: 87
Views: 62646

Problem with these things from a greenpower perspective is that they're too good; anything over 400W output will end up at lethal speeds with the little darlings in..... Present greenpower motor is 240W but gets run up to twice that, & we hit max speed of 42mph at the final. You really don't wan...
by bobc
Mon Oct 27, 2008 9:06 am
Forum: All things battery related
Topic: Lead Acid and Cold Weather
Replies: 13
Views: 8579

I'm interested in any information or links to any information on this subject. I hear repeated claims that you can reach a higher state of charge in a lead acid cell if you charge it HOT (like 70C+) - but I have no hard data. (and it does sound rather risky......) Anybody know any URLs or research w...
by bobc
Mon Oct 20, 2008 8:23 pm
Forum: Hot off the press....
Topic: Greenpower national final this weekend
Replies: 2
Views: 3225

Anybody go to the final? We won How cool is that???? We had an absolutely brilliant day. We came second in the first race (F24+) by a fraction of a second(!!!) over a 90minutes race, and won the main event by a lap & a half. I tell you what, winning any race is a fantastic feeling, but winning t...
by bobc
Wed Oct 15, 2008 12:10 pm
Forum: Hot off the press....
Topic: Greenpower national final this weekend
Replies: 2
Views: 3225

Greenpower national final this weekend

The school electric car race series national final is this Sunday at Goodwood (near Chichester). We qualified 3 cars but will just take 2; Zebedee and Brian. The races are 10:30 (formula F24+ - Brian racing) and 1:00pm (big race - 76 cars). http://www.selwoodsolutions.co.uk website gives on- line li...
by bobc
Mon Oct 13, 2008 12:35 pm
Forum: Cars,Vans and other road vehicles
Topic: Energy consumption figures
Replies: 8
Views: 6652

interesting,
the top greenpower cars do 22Wh/mile at (say) 27mph average.
approx.
by bobc
Fri Sep 26, 2008 12:00 pm
Forum: Cars,Vans and other road vehicles
Topic: Lightest car to convert?
Replies: 30
Views: 26350

Too right Paul, the bottom 2ft of my B pillars were made of square tubular rust & the front was a mess. I welded new B pillar bottom halves on & made new wishbones using herald top balljoints and alfa 164 bottoms, and got the chassis galvanised - it all looks rather nice now! http://freespac...
by bobc
Mon Sep 15, 2008 8:36 pm
Forum: Cars,Vans and other road vehicles
Topic: Electric Vehicles and the Law...
Replies: 20
Views: 24712

There was me thinking it would be some sort of mains plug ;^)
by bobc
Mon Sep 15, 2008 12:09 pm
Forum: Cars,Vans and other road vehicles
Topic: Electric Vehicles and the Law...
Replies: 20
Views: 24712

Aha - brings me to another subject......

Dispensing attachments should be consistent with industry accepted vehicle attachments

what are these industry accepted vehicle attatchments then....??

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