Recent content by bobfandango

Nice drawings and design! Leaving aside the power issues (or rather a lack of power), I also notice there doesn't appear to be any differential. So both wheels are forced to turn at the same speed which may only work well in low traction environments where one or both wheels can slip a bit...

I went and looked at your older builds, but didn't find the one with that gold aluminum. The closest thing I found is the Topspeed case made from carbon plate, aluminum L, and rubber tubes of some sort the allow for stretch or compression in the right places... Should work well for me, and may...

Er, yeah, 3 kids here... One of them 5 mo old. So yeah, no time is an understatement. It's taken me many months, and I still don't have a completely functioning board due to lack of good enclosure. I have a 12s4p in 2 6s sticks, so I can't tolerate flex and am still trying to figure out a...

I'm jealous... Jealous I don't have your fabrication skills... and jealous that I'm not independently wealthy which apparently you are since you have nothing but time and money to put into board after board after board! :) I like this build SO much, that I want one exactly like it for myself...

Thought I'd share an idea I went with for 18650 battery gaskets. Instead of paper gaskets I fabricated my own gaskets out of UHMW polyethylene sheet, 10mils (e.g. http://amzn.to/1Patsuo). The adhesive of the stuff I linked to is supposed to be good to 200F which is a decent amount of headroom...

Assuming the motors are identical (except for how they are wound), and looking only at copper loss, yes. The 1000kv motor will have 1/10th as many winds of wire that is 10x thicker. So, resistance of the coils in that motor will be 1/100th that of the 100kv motor. So, let's put some phony...

Sorry, wrong link... Here is a review of the HG2 where they make some comparisons between it and the HE2/HE4 (there is apparently little difference between the HE2 and HE4): https://batterybro.com/blogs/18650-wholesale-battery-reviews/57179459-lg-hg2-review-20a-3000mah Sorry, but not...

First, here is a really good comparison between HG2 and HE2... https://batterybro.com/blogs/18650-wholesale-battery-reviews/19198431-what-is-the-difference-between-the-lg-he2-and-lg-he4-which-is-newer-better Second, I got 100 HG2s for $4.50 each through Lunacycle in February (with min. 50...

Well reasoned... makes sense. But, a nunchuck would let you eliminate the receiver altogether. But I think I saw somewhere (maybe vedders forum?) that you used to use a nunchuck. Why'd you move away from that? EDIT: Nevermind, I see in another post that your faraday ca.... er, I mean...

Nice stuff Whitepony.... as usual. Your build threads are very useful and informative... All the pictures are really great too. Wish I had as much time and money as you appear to have!! Still wouldn't do as nice a job, I'm sure.... Anyhow, I know an anti-spark switch costs a lot (though...

I was just about to start using one of these loop keys in a project I'm working on, so my curiosity is piqued here... Why do you think it was the parasitic inductance that did this? The whole scenario seems more consistent with simply a bad solder joint in the loop key... If the connection...

Good point re: the electrodes and cables. The electrodes get uncomfortably warm after welding maybe 30 or so welds (into .3mm at full power/pulse width) in fairly quick succession... So yeah, the resistance has got to be fairly significant. I'm just about done with this pack (12s4p), But may...

How do you know how many amps you are running? What battery setup are you using? I can only weld (with a JP Welder) .3 with cut or slotted material and would really rather not have the extra step. Thx

I went ahead and tried a dremel first. 5 out of 6 welds were good and the bad one I credit to the inconsistent surface (I have been re-using this AA battery, just filing it as smooth as I can between tests). Pics.... First shows 6 welds onto a AA battery with a single piece of slotted 8mm...

I was fortunate to receive one of the last welders before riba went on hiatus. And it seems that perhaps folks are having varying degrees of success with .3mm nickel, so thought I'd report my results as well. I have an 80 amp-hour group 24M deep cycle battery. Because I knew I wanted to go...