Recent content by SpeedEBikes

Whatever it's named it will still be a "nice FOC".

Tony has responded requesting photos and offering to make it right sending replacements if needed. If they replace the motor with the wires damaged in shipping I'll be happy. It also is the one that had options for tire choice and was sent with an oversized knobby tire when a smooth street...

It took them until 3 days ago to fill and ship the order, but due to the premium shipping via DHL air I received the order yesterday. Initial impression was not good. Some of the included tires are different from the ones expected/requested. A couple of the tires were poorly installed with...

I've been building motorized buckets, such as this one http://endless-sphere.com/forums/viewtopic.php?f=12&t=65345 I got a bit carried away in the pursuit of performance and now I want to take a step back and build a lighter more compact one. It looks like I'll still be able to get decent...

Against my better judgement I went ahead and did a sample order of 4 different motors. The prices are decent but everything else about the website and their approach to sales seems unprofessional and tacky. But they offer a greater variety of motors than I have seen from other vendors and in...

UUMotor has answered my last email confirming the two different versions of the motor use the same magnets and windings but still did not say what if anything is actually different about them.

Many things will run on either AC or DC. Incandescent light bulbs are essentially just resistors. They actually run better on DC as the steady current doesn't stress the filament as much. Compact flourescents typically work too. And many other electronic devices. And many motors too. Many...

A voltage rating could avoid insulation breakdown of the wiring or protect voltage sensitive components such as an internal capacitor in a single phase ac motor. Or it could serve as an rpm limit. But in this case I'd expect such limits to be far higher. For a typical ebike motor limited by...

They have separate pages for motors, controllers and kits, so I'm assuming the motor pages are for motors without a controller. Almost every motor they sell comes in multiple power versions but they only give a single performance chart per motor, not for each version. The motor I enquired...

amperage = voltage / resistance A fixed resistance load will only pull about 1/4 the current at 33 volts as it does at 120. I'd be surprised if the AC switch would fail on that much lower a DC voltage.

How does this controller go beyond 100% throttle? Does it boost the voltage? If so, do you know how efficiently?

I'm interested in some of the BLDC hub motors offered at http://www.uumotor.com/store. Each of their motors is offered in multiple versions listed by increasing voltage and increasing price. I sent them an enquiry asking what was different between two versions of a motor to give them different...

The wheels and tires are go kart parts. The body work they did themselves in fiberglass. Most of the other parts, motor, controller, batteries, etc. are off the shelf and if you can't find an exact replacement it shouldn't be too hard to find a decent substitute. Most of the aluminum and...

Icewrench, the disc brake side is laced single cross and the other side is zero cross. Wasn't planned just happened to be the only way I could lace it up reasonably centered with the spoke lengths I happened to have on hand. The scooter reponds great to body english. Leaning helps keep the...

I'm losing my ability to walk and wanted a scooter I could ride about the house and around town. Here's what I came up with. Going for more welding gas motor, MAC 6T w/ 12 fet Infineon controller bought from cell_man/EM3EV with 16x3" tire battery, Turnigy lipo 16s 30 AH, ~64 volt...