Recent content by Erogo

Or, how about the two motors contact the RIM, to get less churning loss? Some frames even have pivoty brake mounts that you could pivot a pair of motors off, and rig a squeezing cable between them.

Ha ha good call Tyler. Yeah, society sets up laws that reflect the desire of the majority of its citizens. Some of them are preventative, targeting some situations of increased risk - driving drunk, driving too fast, leaving babies at home unattended etc etc. Presumably the citizens of that...

The right epoxy, and the right oil. The oilbath fella tested his oil before sticking it in his motor. Nothing if not thorough, that fella.

I've made a spreadsheet up that does various figuring out for friction drives. It calculates the force required between the roller (motor can) and the wheel, under different accelerations, rider weights, gradients etc. It estimates what the actual RPM of the motor will be, given the kv and the...

"String" seems like a bad word to use for paralleled cells. A string would normally imply series cells. Like a string of sausages. That and the fact that you had to say makes it seem like you're confused between parallel and series! Be careful! Eric

I'd strongly recommend heatsinking the lipos against the petrol tank. The mass of fluid within should keep the lipo at an optimum working temperature, ensuring you get maximum life from them. Probably using the metal of the petrol tank as a common earth is a good idea as well, you can use your...

Hmm, that doesnt sound too bad actually does it vokus! And as Hillhater pointed out, your 700w is probably max, so you'd get more than your five hours out of it. Or you could run somethign else off it at the same time, like a decent sound system. You'd have to power a screen of some sort as...

700 watts for five hours? You need 3500 watt hours of capacity. If you get your lipo seriesed up to deliver 120V, then your 700 watts will be drawing about 5.8 amps. So you need to deliver 5.8 amps for five hours? 29 amp hours. Most packs are speced in milliamp hours, so you need to get...

Hey Adrian, good to hear the progress! I hope you're having fun, with it so close to completion. My two cents: 1) Youve got wiring to the front already hey, for the display? It might not be too much more hastle to have another pair for the wheel sensor? Would the extra length be subject...

That sucks eh. We're all (ok 99% of all) shopping by cost, buying the cheapest we can find, bleating when the $60 WangFo motor that some kid put together at 2am working for a dollar a day doesn't have it's windings tied down tight, and uses an economy grade bearing. Who was it said: "Noone...

OK I think it's an ezipp Made in India, rated at 250w with 48v of SLA The one in the shop sold, but get this: There's another one available because the original purchaser has given it away to the local women's refuge, who don't want it either. So they dont know how to get rid of it, being...

Did some more sawing and drilling and filing last night. Cause I found that when I bolted the newly secure motor to the trailer, the wheel couldn't go round any more. I traced it to the fact that the new retention plate was pressing hard against the tire. Stink. The thing's getting too big...

You're not using sound waves anyway, you're using radio waves. But, go ahead and isolate the charger from the experiment by placing it in a faraday cage if you have one handy, or just shielding it in copper. I'd lend you the copper hat I use to prevent the government beaming their messages...

Hey McLovin - what about the insides ;-)

Ah, but headaches is what life's all about, isn't it? If you can always get what you want, you don't appreciate it any more. Yes, this is just a hubmotor in a small wheel. I reckon it should be midmountable, via some sort of bodgy bracketing and lots of duct tape. As a moped styles, it's...