Battery Vehicle Society

I've just added the photos of Chris' Raido R50 to the photos from Sunday's meeting. There are quite a few detail shots, showing things like the charging connector. Much better lighting for those new photos than the ones taken in the car park at Cribbs Causeway on Sunday.

I popped into a car parts shop the other day and got an LED high-level brake light. It's 12V of course, which is fine for the Series II and III City-Els (Series I has 36V lights). Here's a photo of it installed and lit up: http://www.flickr.com/photos/anachrocomputer/1902440569/ Connecting it up was...

Chris popped round to visit this morning, and I have a snippet of extra information. It's a Raido R50, made in Taiwan. Chris got it from an importer who got it from Taiwan as a sample to see if it could be sold in the UK for road use. The supplier then went out of business, and Chris had to get the ...

Just a few photos this time, showing Chris Faulkner's newly road-legal electric bike:

http://www.flickr.com/photos/anachrocomputer/sets/72157602985622089/

As for the regular BEVoB meetings, the plan is to hold them on the first Sunday of the month, so the next one will be this Sunday, the 4th of November. As far as I know, the December meeting will also be on the first Sunday, although we may make a different plan due to Christmas. The January/New Yea...

I've added a few more photos today, including some of the older Greenpower racing cars that were on static display.

Couple of points: If you're measuring the resistance of filament light bulbs, cold, then you'll get a reading that's much too low. When a light bulb is first connected up to a supply, it will draw a large current (according to the resistance you measured), but then the filament will heat up and the ...

I've posted a link to the photos in the 'Gallery' section, but here it is again, just in case:

http://www.flickr.com/photos/anachrocomputer/sets/72157602418184774/

Great day out!

Some of my photos of the BVS vehicles at the Goodwood circuit, location for the finals of the 2007 Greenpower races:

http://www.flickr.com/photos/anachrocomputer/sets/72157602418184774/

I have some more pictures, yet to be uploaded.

I think back-EMF is proportional to motor RPM, but will also be affected by the field current, in the case of a non-permanent-magnet motor. Back-EMF is, of course, what we utilise when we implement regenerative braking.