Brushless Savage

Brushless Savage

Nov 2005: I had to enter the brushless world, so I thought to take an HPI Savage and convert it into electric with a brushless motor. I choosed a Novak HV. After surfing the web to see some projects, I wondered why most of them used motor plate with motors mounted high on chassis, with an extremely high center of gravity. found a solution by installing the motor very low, just were the gas motor was. This helped a lot to keep a lower center of gravity.

My project was to keep 2 speed gearbox and adapt a oneway bearing on the 2nd gear to have brake and backward.

I used a common 3mm aluminium 'L' shaped motor mount. I had to change spur gear and put a 32p. I used one from an E-Maxx and I had to trim Savage spur gear shaft on my mill to adapt the new gear.

After installing motor, I was excited to make my first test run, to see if the motor was powerfull enought for my truck or not. I made both battery holders and went outside to see it running.

I WAS IMPRESSED !!

.

Dec 2005: After seeing that it could be a working project, I started to make what I thought was the hardest part to do: adapting an one-way bearing to the 2nd gear. Originally this gear is installed on a bearing and turns freeely on the shaft, while the 1st gear is installed on a one-way bearing. I thought to use a second one-way bearing on the 2nd gear opposite to the other bearing to have backward.

After about 3hrs of work on lathe and mill I made the brass bush. The bearing is keept in place by 3 grubs.

This is how it look.

However after I rebuilt the gearbox I found my thoughts were wrong: when I try to turn backward gearbox locks and doesn't work. This mean I have to forget using 2 speed instead on 1.

	Nov 2005: I had to enter the brushless world, so I thought to take an HPI Savage and convert it into electric with a brushless motor. I choosed a Novak HV. After surfing the web to see some projects, I wondered why most of them used motor plate with motors mounted high on chassis, with an extremely high center of gravity. found a solution by installing the motor very low, just were the gas motor was. This helped a lot to keep a lower center of gravity. My project was to keep 2 speed gearbox and adapt a oneway bearing on the 2nd gear to have brake and backward.
	I used a common 3mm aluminium 'L' shaped motor mount. I had to change spur gear and put a 32p. I used one from an E-Maxx and I had to trim Savage spur gear shaft on my mill to adapt the new gear.

	After installing motor, I was excited to make my first test run, to see if the motor was powerfull enought for my truck or not. I made both battery holders and went outside to see it running. I WAS IMPRESSED !!


	.

	Dec 2005: After seeing that it could be a working project, I started to make what I thought was the hardest part to do: adapting an one-way bearing to the 2nd gear. Originally this gear is installed on a bearing and turns freeely on the shaft, while the 1st gear is installed on a one-way bearing. I thought to use a second one-way bearing on the 2nd gear opposite to the other bearing to have backward. After about 3hrs of work on lathe and mill I made the brass bush. The bearing is keept in place by 3 grubs.
	This is how it look. However after I rebuilt the gearbox I found my thoughts were wrong: when I try to turn backward gearbox locks and doesn't work. This mean I have to forget using 2 speed instead on 1.