Recent content by HTB_Terry

Dogman, I had you in mind for the unbiased tester. If you have time I will send you a motor. I received several messages from people, most basically telling me not to worry about the rude comments (I don't) and had several questions. It seems I was not clear on the background of this motor...

Yes, you can parallel mosfets. Use the best ones you can get, similar to the ones one there. You can also use a heatsink instead, or with the additional mosfets. An example is shown below with one mosfet added to the discharge and one to the charging mosfet. An aluminum strip was bolted to...

Hightekbikes is looking for investors for several projects. One of them is a motor design and manufacturing facility here in the states. I can get started with only one million. Experienced motor designers are already in the area. I would hire about 20 people. If anyone wants to put their...

Gordo, this motor is rated for about 2000 watts so it is not appropriate for your 10,000 watt setup. The term high power is relative, this particular forum is for ebikes, not motorcycles. With most ebikes running 250-500 watts, most people would consider a 4x increase high power. Again, its...

John, not to belabor the point but RC motors spin at what? 2000-3000 rpm? Hub motors spin at 300-400 rpm. That is not a valid comparison. Also the entire stator by the coils is coated with a resin substance that is baked on. This prevents any movement and provides heat protection to the...

The stock phase wires are 14 guage. While I had the motor open I tried to change them to 12 ga but they wouldn't fit. They only extend about 12 inches outside the motor so there won't be much power loss at high current but at some point that could be an issue. Someone with some experience...

Most companies don't show you the internal parts of the motors, otherwise you would know that they are all hand wound. As far as I know the neatness of the windings makes no difference whatsoever. So even though they might not look pretty, they work just fine. I forgot what the terminology...

I was positioning this motor as a competitor to the Crystalyte 5000 series but it's starting to look more like a hybrid between the 9C and the Crystalyte. Lighter than the 5000 but higher power than the 9C. I don't know what the limits are yet, but we will all know after it is tested by...

Photos of the maxi-might with the cover off are below. Note that the overall design of the stator is similar to the smaller Aotema. The coils are wound the same way. The stator is very light which is good, the smaller mass will have some limit to heat dissipation. The outer steel band is...

Hi David, Thanks for your interest. I forgot to mention this is a sensored motor, but will run either way. The supplied controller uses the sensors. A high powered, programmable controller is available from us and is sourced from Lyen, well known on this board. We put on the right...

Your hunch was correct, you should use diodes to isolate the two controllers. Both controllers need to power the throttle in case you want to use one motor. Use schottky diodes to keep the voltage drop low. The specs for the diode are 12V or more, any currect, small ones are fine. The...

We have just released our new high-power motor from Aotema. Designed to compete with the Crystalyte 5000 series, it offers similar performance with less weight. More information including pricing is in the For Sale section. The first two people who are willing to test a motor kit and write a...

An additional note. If you are going to store the pack for a long time, then yes a 50% charge is good, but you have to disconnect the BMS. Most of our packs now have the BMS outside the main shrink tubing for maintenance reasons. Just unplug the white connector with all the small wires. Then...

WARNING ! You must keep any lithium pack charged up. So don't let it sit for months. I am recommending charging them once per month. You are probabl;y thinking why? lithium cells can maintain a charge for months. Yeah they can, but the BMS will drain one or more of the cells! The BMS is...

Interbike sponsored an electric bike race during the show last week. It was outside of town on a moderate hill. Many ebike companies conmpeted, I was unable to submit an entry in time. Hanebrink's off road bike won. This was not the stock Aotema powered model but a special order option using...