XTM X-Cellorator brushless conversion
05-18-2014, 07:51 AM
#1
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XTM X-Cellorator brushless conversion
Managed to find a cheap rolling chassis on ebay for £15 that was just missing the engine. I was wondering about getting a nitro engine for it, but wondred if I could couple up a brushless conversion as it is a bit more neighbour friendly.
After a bit of looking, I bought a combo set from Blacksmith Products for £75 consisting of a 2200Kv motor with 5mm spindle, speed controller and programming card. Its only a cheap hobbywing setup, but I didnt want to spend loads if it all went wrong.
I made the mount out of a pice of alloy angle and managed to get the fixings from the plate to go through the gearbox and down to the chassis plate. I drilled the slots in the mount for the motor adjustment as I wasnt sure on the pinion size. With the alloy mount bolted to the alloy chassis, there is acers of metal for the motor to get rid of any heat.
I worked out the motors RMP would be about 15000 and as a nitro spins around 30000rpm, in a crude way of thinking needed to get a pinion twice the size of the stock notro. I ended getting a 21t pinion (32dp). As the pitch is fairly coarse, there is a bit of gear noise. This would normally be muffled by the noise of the nitro engine. I have kept the slipper clutch on the spur gear.
The electrics are sperad out, with the battery in the front and this has given it a near perfect centre of gravity.
I was supprised on how much punch the car had, and had to adjust the speed controller to calm it down. To be honest it could easily hadle a larger pinion, as the motor is barley getting warm, but it would be too fast for where I use the cars. Run time is suprisingly good as well. May try a 23t later.
Im only running a 7.2v 3500mAh battery as Im still to invest in Lipo (I mainly have vintage rc cars).
I would definatly do this to another nitro car (if I find one cheap enough)
Hope this may help someone who is thinking of doing this also. Im a believer in making things yourself and keeping them simple. If in doubt, just get on with it.
After a bit of looking, I bought a combo set from Blacksmith Products for £75 consisting of a 2200Kv motor with 5mm spindle, speed controller and programming card. Its only a cheap hobbywing setup, but I didnt want to spend loads if it all went wrong.
I made the mount out of a pice of alloy angle and managed to get the fixings from the plate to go through the gearbox and down to the chassis plate. I drilled the slots in the mount for the motor adjustment as I wasnt sure on the pinion size. With the alloy mount bolted to the alloy chassis, there is acers of metal for the motor to get rid of any heat.
I worked out the motors RMP would be about 15000 and as a nitro spins around 30000rpm, in a crude way of thinking needed to get a pinion twice the size of the stock notro. I ended getting a 21t pinion (32dp). As the pitch is fairly coarse, there is a bit of gear noise. This would normally be muffled by the noise of the nitro engine. I have kept the slipper clutch on the spur gear.
The electrics are sperad out, with the battery in the front and this has given it a near perfect centre of gravity.
I was supprised on how much punch the car had, and had to adjust the speed controller to calm it down. To be honest it could easily hadle a larger pinion, as the motor is barley getting warm, but it would be too fast for where I use the cars. Run time is suprisingly good as well. May try a 23t later.
Im only running a 7.2v 3500mAh battery as Im still to invest in Lipo (I mainly have vintage rc cars).
I would definatly do this to another nitro car (if I find one cheap enough)
Hope this may help someone who is thinking of doing this also. Im a believer in making things yourself and keeping them simple. If in doubt, just get on with it.
05-18-2014, 10:11 AM
#2
Nice conversion! I get a kick out of people who think it's so hard to do stuff like this when it can be done with a little thought and some hand tools. I'd keep an eye on your battery though, the brushless system can definitely draw more than the battery can put out, don't let it get too hot. I'd also watch out for conversion syndrome. Once you convert one vehicle you're going to want to do another, I know I did!
