Search found 103 matches

by bobc
Wed Apr 30, 2008 8:33 pm
Forum: Hot off the press....
Topic: BVS at the Green Power Corporate Challenge
Replies: 21
Views: 12675

Great to see you're bristling with ideas Malcolm - you do realise I'll nick any that I can....':wink:' There was a leaning car last year called "poly-ply-lean" - you might find some data on the greenpower site - it was a bit big heavy & slow but delightfully wacky! I think the way forw...
by bobc
Wed Apr 30, 2008 6:26 pm
Forum: Hot off the press....
Topic: BVS at the Green Power Corporate Challenge
Replies: 21
Views: 12675

Yes you get bang on 100Ah. I've done the sums...... peak efficiency for the motor is at a touch over 24V so if you use a boost converter the motor efficiency gain gets lost in the converter (that's with 600W going in). You'll appreciate this is an efficiency contest, not a power contest! The winning...
by bobc
Wed Apr 30, 2008 6:24 pm
Forum: Hot off the press....
Topic: BVS at the Green Power Corporate Challenge
Replies: 21
Views: 12675

deleted
by bobc
Wed Apr 30, 2008 1:10 pm
Forum: Hot off the press....
Topic: BVS at the Green Power Corporate Challenge
Replies: 21
Views: 12675

MalcomB
must be 4 wheels (and as you can see some still roll). Obviously safety of the kids is top priority.
Batteries are supplied by the organisers - 70Ah lead acid automotive batteries. You get 2 pairs of 2 for the 4hrs
by bobc
Wed Apr 30, 2008 1:02 pm
Forum: Hot off the press....
Topic: BVS at the Green Power Corporate Challenge
Replies: 21
Views: 12675

Superb report - particularly liked the photo of "phoenix" on it's side! There were a few nice photos of my team's car "brian" - the slug lookalike. Like he said ^^^^^ it's a fun hobby, I'm associated with a girls' school team - we were laying up a fibreglass mould for this year's...
by bobc
Mon Apr 28, 2008 11:40 am
Forum: General
Topic: BVS greenpower entry??
Replies: 9
Views: 4356

Race day was yesterday. My team got a top 10 finish in both races in spite of major howlers by the team.... (I wasn't there - what can I say....). Yep -10th in both races! The BVS entry ended up with the wooden spoon so I guess something must have gone horribly wrong - I'd still like to know who the...
by bobc
Sat Apr 26, 2008 5:45 pm
Forum: General
Topic: Kitten moves under battery power!!!
Replies: 0
Views: 2088

Kitten moves under battery power!!!

OK I'll come clean - my brother was holding a battery electric drill with a socket in the chuck onto the axle pinion nut, while I steered using mole grips on the rack pinion splines. And it didn't quite have enough oomph to keep going under its own power. Still, good fun & a milestone of sorts ....
by bobc
Fri Apr 25, 2008 10:52 pm
Forum: General
Topic: Charge point symbol
Replies: 10
Views: 8079

It is crying out for some kind of standard for the plug type. I can't help feeling that a domestic 13A plug/socket is not the ideal system for this, it's not robust, waterproof or capable of supplying more than 3kW. On the plus side - at least it is some kind of a standard! In view of power transfer...
by bobc
Sat Apr 05, 2008 11:52 pm
Forum: General
Topic: parts?
Replies: 2
Views: 2515

Those are industrial 3 phase induction motors from Lenze. Also available from literally hundreds of other suppliers... From an EV perspective they have a few problems, they are HEAVY - 20kW would be pushing 100kg. Also they run off 400Vrms line to line - rather more than you'd want to supply in a ba...
by bobc
Fri Mar 28, 2008 11:45 pm
Forum: General
Topic: BVS greenpower entry??
Replies: 9
Views: 4356

BVS greenpower entry??

I notice that the greenpower "corporate challenge" race in a month or so, includes an entry from "the battery vehicle society". Who's doing that then? what's the car like? Is there a website? I won't be at Goodwood that day unfortunately...
Bob

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