CM-10 Electronic Speed Control Early 1980's

[RC10resto]

Does anybody know anything about this early ESC?

[RichieRich]

Whatever it is, dang, it's in great shape!

[RC10resto]

Never hooked up or mounted - it is new

[paNX2K&SE-R]

Interesting, never saw one of those before.

[Lonestar]

nope - never seen this one before... Looks like small-production stuff when there were a bunch of self-made esc's from people not wanting to pay for the branded ones. Looks awesomely finished though

Nice find!
Paul

[GJW]

just awesome, whats planned with it?

[RC10resto]

I have no clue, first want to find out some info

[thepistol]

This was made by a company in Texas named "CMW" (Competition Model Works). They had an advertisement that ran in one of the major RC magazines back in the mid 80's. They were listed at $59 each. I remember ordering about 5 of them (me and a few of my brothers wanted some) and they took about 2 months to get them. I was told they could not keep up with the orders for them. The case is made of aluminum and is ment to work as the heat sink for the FETs. You will notice the brake FET has a piece of heat shrink on it (or it should) to keep it from touching the case & shorting. These were great esc's back then, comparable to a Novak-1 I believe. I still have two and they work fine. Specs are as follows for your info:
On Resistance: .008 ohms
Peak Current: 450 amps
Continuous Current: 150 amps

[RC10resto]

Thank you!
Great info very helpful
Brian

[lpddpd]

This was made by a company in Texas named "CMW" (Competition Model Works). They had an advertisement that ran in one of the major RC magazines back in the mid 80's. They were listed at $59 each. I remember ordering about 5 of them (me and a few of my brothers wanted some) and they took about 2 months to get them. I was told they could not keep up with the orders for them. The case is made of aluminum and is ment to work as the heat sink for the FETs. You will notice the brake FET has a piece of heat shrink on it (or it should) to keep it from touching the case & shorting. These were great esc's back then, comparable to a Novak-1 I believe. I still have two and they work fine. Specs are as follows for your info:
On Resistance: .008 ohms
Peak Current: 450 amps
Continuous Current: 150 amps

You know what? I just realized that over the years, I just glossed over specs and stuff mainly because I'm not a racer. I just want to plug it in and go. So now I think its time to learn something new. Is there a thread here that explains what this info means? It is a very pretty ESC by the way.

[Bongo Fury]

On resistance is just that, how much resistance the unit adds between the battery and the motor at full on throttle. A lower number is better, closer to just a direct wire, less voltage & power loss. Don’t remember offhand what a good number for that era is (but I think that number is reasonably good).

The amp ratings are how much current (amperage) the unit can pass. More is better, can handle more power without letting out the Magic Smoke, basically can handle a lower turn motor.

A word of caution, not saying anything about that model/brand, don’t know specifically, but sometimes ESCs are/have been rated in terms of the combined maximum ratings of the transistor components. Not always a measure of the ESC as a complete unit/assembly.

Not listed here, another important spec is voltage ratings. Generally pretty straightforward, also normally not very forgiving, can result in instant Magic Smoke release.

Hope this helps some.

Regards