Recent content by joec

I think that’s going to be it; just need to make sure that short bursts of ~60A are doable.

For what it’s worth, I do have somebody certified who is willing to help me locally, but they want to see the UN certificate, and they want to know that the battery and packaging (everything relevant) is exactly as the vendor would ship it. At the moment I think that four of these in series...

Just a few updates: -Luna Cycle was not willing to provide me with a UN safety certificate, so I wouldn't really be able to re-ship one of their packs. -An unnamed vendor was willing to provide the UN safety certificate, but for a much smaller battery than what I was asking for. They said that...

I’m in Oakland California, and I’m looking to imitate a 48V pack with at least 10AH capacity. This is for a recumbent trike with steer-by-wire, so for the final build more capacity is better... but for now I think that’s a good starting point.

Hi all! I'm building the control system for a joystick controlled electric trike for a friend in another state, and I need to come up with a 48V power source for debugging. It looks like if we buy the ebike battery that he'll eventually be using and have it shipped to me, it will be a royal pain...

For what it's worth, I actually got my credit card refund from the Mister Tao website. It was a small gamble when I placed that order, but I thought that folks would like to know for future reference that although I didn't get my motors, I also didn't get ripped off. Now if only I could find...

An update- my order status on Mister Tao says "refund". The money is apparently in some kind of holding, not back at my credit card, and I can't find a different link or seller on there to try another purchase. I'm going to try to figure out how to get my money back unless somebody has another idea.

Well, here it goes! I just placed and order for two raw motors from Mister Tao. I'll report back when something happens.

Well... I did recently get a new job that pays a lot better than the old one- might as well take a gamble! This time it won't be like the time I got burned on a direct shipped power supply that did less than half it's rated power before letting the smoke out, right? :roll:

Sorry if this has been covered- I tried to search (promise!) and read about 30 pages, but how has it worked out for people who have ordered just the motor? I sent an email to GNG via their web form, and got an email back from Jon Chan saying that it would cost $118 plus shipping. I replied with...

Thanks, Bobc- I guess I can make a provision to try an idler as well as slotting the motor and wheel mounts. I'm just thinking about how that idler is going to have to be strong. The good news is that I got word back that I can get the 450 watt 48V GNG for $118 plus shipping. This is going...

Thanks! That's probably a more robust motor than the Turnigy outrunner. I'm trying to remember if there was something other than price that was pushing me away from the GNG and toward the Turnigy. I think that price was likely the biggest factor- I'm not crazy about paying for GNG kits and...

Sorry, my lousy hotel wi-fi deleted a few posts that I made that were better written with inline images and a concrete line of thinking... I just wanted to post this pic while I was thinking about it. The overall width is kind of excessive, even for a wheelchair, so I'm looking at milling...

I've been thinking about this scheme, and this is what I have so far. I want to use a 2"x4" 6061 aluminum tube with 1/4" walls as the core to hold everything, and use a Turnigy SK3 6374 with a small timing belt sprocket mounted directly to it driving a jackshaft with another timing pulley on a...

Sgds23- did you have an luck with this? I am presently looking at using similar motors with a Roboteq brushless controller, and I'm interested to know how it's working out. Hopefully you've had some luck! If not, then I'll be sure to post if I do anything to advance this.