RC-Monster Forums - View Single Post - limit C-50 hacker maxx?

lipomax · 04.13.2005, 01:10 PM

The C50 14.4 is like 3000 KV, so going 18 cells, you're at like 20 volts. With 20 volts and 3000, you're getting 60,000 rpm. Probably okay, but it's like running your car on the redline limit all the time. Long term use, efficiency, etc. will be way down. I'd be careful with a fully peaked and topped off 18 cells cuz you'll be at 22-24 volts and now you're running in the 65,000 to 70,000 rpm in first gear and that is reallllly pushing the motor.

Having said that, I've ran my 1920 motor beyond 85,000 rpm for a brief moment - it sure was LOUD!!! Probably took a couple of years off the motors life.

In addition, it also depends on the individual motor. I've run accross some brushless motors that have rotors that aren't "balanced" so they are very loud and I have other brushless that are much better balanced and are VERY smooth and quiet at even high rpms. As far as balancing, the companies don't balance using epoxy or drilling, but maybe should consider it...

Hey Mike, how about it... Monster Mike's brushless rotor balancing system to allow less vibration/higher rpm for the racer seeking that minute edge over the fellow competitors.

	(#9)
lipomax RC-Monster Carbon Fiber Offline Posts: 191 Join Date: Feb 2005	04.13.2005, 01:10 PM The C50 14.4 is like 3000 KV, so going 18 cells, you're at like 20 volts. With 20 volts and 3000, you're getting 60,000 rpm. Probably okay, but it's like running your car on the redline limit all the time. Long term use, efficiency, etc. will be way down. I'd be careful with a fully peaked and topped off 18 cells cuz you'll be at 22-24 volts and now you're running in the 65,000 to 70,000 rpm in first gear and that is reallllly pushing the motor. Having said that, I've ran my 1920 motor beyond 85,000 rpm for a brief moment - it sure was LOUD!!! Probably took a couple of years off the motors life. In addition, it also depends on the individual motor. I've run accross some brushless motors that have rotors that aren't "balanced" so they are very loud and I have other brushless that are much better balanced and are VERY smooth and quiet at even high rpms. As far as balancing, the companies don't balance using epoxy or drilling, but maybe should consider it... Hey Mike, how about it... Monster Mike's brushless rotor balancing system to allow less vibration/higher rpm for the racer seeking that minute edge over the fellow competitors.