Recent content by dangerzone

The GSX1100G is one of the bikes I own. It has a massive torque, hence Suzuki opted for a hydraulic clutch so that the bike would not wheelie and put too much stress on the gears and shaft drive. The engine is restricted, it has around 100HP but can be tuned to have over 200HP without adding...

It's a good thread, though. Finally, someone is talking about true power.

Just a couple thoughts... 1. If you wish 40kW you will not go bellow 120V, otherwise you risk to melt the copper windings due to heat. At 120V this is up to 300A peak, which is quite a lot. Beyond 300A, even pure copper heats. Bear in mind that at such amp draw, your battery connectors risk...

Hi Alan and the QS Team, What kind of high power 17 inch rim wheel hub motors do you have over 12kW continuous? Please watch this video of a hub motor in the Super Soco, is this one of your motors, is it a Yuma or some other competition? What other hub motors do you have today with a...

Wow, pretty brutal design! :) How much does it weigh?

So, how did it turn out to run on more than 80V? How's your project Citycoco doing now? :)

A question for you producers of the QS motors. I have a Citycoco X7 scooter with two custom made 60V 40Ah (21700 cells) batteries and a custom made controller capable of 100A. Could you please tell me which 10 inch motor would you recomend with 4000W or more power? The table you posted is...

What kind of mosfets does it have inside? It is hard to believe that 12 mosfets could handle 4kW continuous...

Any idea what kind of halbach array does it have..? It would be nice to take a peek and see what's inside this motor...

+ Europe group buy.

Excellent point, that is why I mentioned styrodur and not styrofoam. The difference is that styrofoam (expanded polystyren) has a lower deformation temperature point (around 70 degrees centigrade) than styrodur (extruded polystyren, deformation point around 80 degrees centigrade) and it might...

Wow, great info Doc..! I was thinking about buying the 900W version (the EMC-900) to power my nominal 98V Headway battery pack (3x36V20Ah in series/36S2P) yet am still not sure if that would do the job. Cause the real voltage of my full pack is 120V and this EMC-900 seems to max at 120V which...

Please excuse me for also being a bit off topic with this solution but if someone needs a lighter solution styrodur or a similar isolating material can be used. Put the prismatic cells between two plexiglass pressure plates in stack so positive poles are facing negative ones, in series. Strap...

Great info and great work Jack, good to see you here again. So do you think this 17.40$ per cell for >500 pcs is gonna be the deal from now on..? I mean, why do they sell them as 'rejected cells', is that advertising or what..? I hope you're right and that there is no need to fear a shortage in...

Hey John Rob Holmes, this wheelset looks really tidy and neat. Yet I do have a question about the lacing on the rear wheel. You laced the front wheel as it usually is laced, every second spoke is laced from the inside to the outside of the hub. But on the rear hub all of the spokes are laced...