Recent content by blueb0ttle2

I agree that the overall lifespan of the pack should be part of the calculation. I think Lithium has been around long enough to amply prove the claims as to its longevity. The dept. only just bought new lead batteries for the car (this was a year before I was involved :evil: ). So I suspect...

These suggestions have all been very helpful, but I realize that my core question of how to compare the capacity of Lead Acid batteries and Lithium batteries remains unanswered. (apples and oranges) The capacity of the batteries seems to be measured differently in each case, and I want to make a...

The original owner installed a NetGain Impulse 9 motor. Which is a rather conservative choice. I personally would have gone for the Warp9, but money may have been an issue when he was choosing parts, so it's quite understandable. That said, the Impulse 9 should handle 1000A bursts without any...

For the Headway's those 400 batteries is a 10p40s configuration, of course. I've seen similar things done in the past. But again, money and time are sadly at a premium.

Hmmm. According to my calculations going for ~200AH cells would not save us very much weight (about 150 lbs), and hardly any space. At one point I considered stringing together 400 Headway cells (Since they can discharge at high rates), but frankly that is an absurd and rather costly thing for a...

Hmmm. I see your point. Lithium doesn't like being drained too much. The controller we have installed (The Curtis 1221C) peaks at 400A. However, we have been having problems getting up hills at normal traffic speeds, and are considering getting a controller that can guzzle more amperage...

Hello everyone, I haven't posted in this forum for a while. But I have a damn good reason. I've been very busy with my studies getting a BS in electrical engineering, and after 4 years I discovered that someone converted a miata to electric (Don't laugh!) and donated it to the university.I am...

Not bad.. not bad at all. :wink: What wattage are those motors/

It's been ages since I last posted. All I can say is that the Ping battery in the Europa is still going strong. BTW what's up with this thing? :pancake:

Sure thing. Yeah, I ought to have made myself clear. Of course one has to be careful, but I have long been afraid of LiPo to an almost irrational level. Hopefully my exposure to it, in the presence of experienced operators (in the lab and field) will help me learn to use it safely, and help me...

I used to be very afraid of LiPos, but I'm working in a robotics lab over the summer, and am surrounded by LiPos for their flying machines. I have four of them charging 2 feet from my face as I type. I suppose this will make me more confident to use them in the future. :twisted:

I have this guy's younger brother inside a vacuum tube tester I use for my old radios. #83 rectifier tube. Here's a photo of one in action... And some info on other glowing vacuum tube rectifiers. Often used in Hi-Fi and early radio.

B66's and B67's are available in black. The brooks website even has pics. I once rode a 50 mile trip on a B66 on my rigid frame non-electric bike, and was very comfortable indeed. I am going to test out a B17, which has no springs and is narrower, on one of my regular bikes soon, so that might...

The B73 has a decent size for most riders and has 3 springs, all vertical. Very very springy, I've ridden a chinese copy, and it can absorb a lot. The B190 is larger, and has an ungodly number of springs. At one point I rode a B135 which has the same saddle shape and size as the B73, but the...

The aged saddles are good too. I have one on my main ride now. Aaaaaaaah. :wink: