Results tagged “HXT” from The GPSy EV Project

I spent a few hours this afternoon installing the HXT outrunner motor. It was a bit larger than the MY1016 that I had previously had as a prototype. And as it is an outrunner, this necessitated a different type of engine mounting.

Here you can see the base end of the outrunner motor with the power leads on the left. The X shaped bracket came with the outrunner and is what I used to attach it firmly to my Boxer's left engine support bracket.

This is the view from the top. The main body of an outrunner motor rotates, so you can't attach the motor by the side. It has to be face mounted.

Here is the left side spindle with the V-belt pulley installed. The nice thing about retaining the CVT back end on the moped is that I don't have to adjust the pulley tension, it's done automatically.

This is the right side of the motor / moped. In order to have the pedals clear, I had to shorten the right hand (prop side) spindle. I left a small nub so that I later attach a flange bracket to lessen some of the side loading on the main bearings.

I had to cut away some of the sheet metal on the right hand motor bracket to fit the motor and its spindle in. This considerably weakened the right side bracket, which is a structural part of the suspension system.

This is the right side of the motor again, from the top. The green, black, and red wires visible are the mopeds low-voltage (6V) power leads to the headlight and taillight.

When I cut part of the right side motor bracket to fit the spindle in, this weakened the right side as it was a structural component. In order to make sure nothing Bad happened, I reinforced the bottom part of the mount with a piece of L aluminium bracket.

Once the ESC arrives, I can wire everything up and take her for a spin. I'm hoping that current pulley gearing will give me around a 30 mph top speed. I'll be running her off a 24V SLA system at first, then when my NiMHs arrive, at 28.8 volts.

Higher than 30V and I need a new ESC, darn I knew I should've just bit the bullet and gotten the Phoenix HV100A.

Well, the motor from United Hobbies arrived! Very fast shipping, I ordered on Friday and it got to me on Wednesday from Hong Kong. The packaging was secure and everything seemed in place:

The motor is much heavier than it looks and it rotates with a definite clunk-clunk-clunk. I got the 130Kv version which means that at the 24 volts that I plan on running it, my max RPM should be 3120 rpm, which isn't that different from the current brushed motor I'm using so I won't have to fiddle with the gear ratios much.

The motor base unit is 4" long. Each spindle is 1.5" long so the entire unit is 7" long.

I do like the odds and ends they include, including the very handy motor mount. Since this is an outrunner motor, the outer shell actually spins around so you can't mount it like a normal motor, you have to mount the one stationary end. It has two spindles, I'll be using the one closer to the base to run my V-belt and affix a small propeller blade on the one on the far end to help cool the motor.

Unfortunately, I ordered the ESC and servo tester from separate places and they still haven't arrived, so there's nothing to do right now but twiddle my thumbs.