Recent content by Dunhill_BKK

What's up Doc? I'm assuming you've been far too busy in the lab to post your progress, but I'm still interested in these batteries and your claim that balancing is not required. Can you elucidate further yet? I'm looking to build an E-bike and these cells seem to have some very good...

How will you go about charging this huge pack? Are you sure that no balancing is required? Does that mean we can charge a whole pack at one time with no worries? I'm still a bit confused about charging packs in general and am still looking at various BMS systems. However this no balancing...

Thanks Doc. Time to get some packs now. Cheers,

A gentle reminder Doc, you promised me pics of the disassembly of this type of pack.

Will we encounter similar problems with battery packs? Some of the A123 pack builds on the RC forums are works of art. http://www.rcgroups.com/forums/showthread.php?t=832544

I've actually been to Ian's place at Flying furniture. I just didn't have the approval of the finance minister for the purchase. I've also talked with Brett a bit about motors and batteries.''My commute could be as short as 14 each way, or as long as 18 each way. It depends on how much...

Thanks for such an informative post. I am also thinking about a recumbent as well, but possibly as an alternative to e-powered assist. However, it would probably be a great addition to add a relatively small hub motor to a 'bent. You already gain so much from being bent in terms of less drag...

As an Aussie I"m aware of the Elation kits, but I didn't know they had LiFEPO packs. What do you think the difference would be between the elation-type system running through the gears and a geared hub? I reckon that one of the geared hubs, mentioned earlier in the thread might be comparable?

I think I'd consider wind resistance as a constant in this case. Consider that when I hit the point where wind resistance starts to be the biggest limiting factor I'm happily cruising along and don't wish to go any quicker?

Well, I did say I just wanted to take the edge off, and that I live in a flat area with almost no hills. I also indicated later on that I was interested in LiFePO batteries. However, I don't want to get into specifics about a build for my situation. I'm just curious about people building...

Good points about the cranks and tooth counts. What about the electronic control for pedal assist as with the Bionx kits? Any comments in that area?

You make a really good point about being able pedal. Have you considered something like the Bionx regulation of the power assist?

Thanks for all the links and the advice. At the moment I'm leaning towards LiFePO batteries. This is part of the reasoning behind wanting them to last a damn long time, as an early adopter (in relative terms) I'm paying a fair amount for the power. If all works out I'd get one pack to last...

I was wondering if anyone is looking at small, long-life systems, that are enough to give you a bit of a boost and don't drain batteries quickly? I notice many folks going for maximum speed and maximum power, but not many looking to do things on a small consumption/long-term scale. I might be...

I liked the materials he used, the placement of the weight and the tought that went into providing some suspension. As with most engineers they aren't out to win a beauty contest and aren't really concerned about theft. They were answering a specific question, how can I provide an electric...