problem with mm overheating... fan?
 

hey i want to get a fan for my esc but which one should i get? should i go ahead and buy the novak fan? will that fit the mm? where is a nice little fan that i can buy?

thanks

I have bought a bunch of fans from www.allelectronics.com and www.hosfeltelectronics.com

There are a ton of them... many @ $2-3 each. Look for the thin ones... watch the specs. You don't want the fat boys. I like the 40mm fans for the esc. If the motor is next to the esc you can run a bigger fan and get both some air.

There's a guy on ebay that sells cooling fans. I think his store name is robobugs. He claims that his fans are very tough. I got the 12v version and am planning to run it directly from my 4S lipo pack. Less work for the bec and when you run a 12v fan on 4S lipo, it's like a little hurricane under the body. I'm running a 12v 40mm fan on my motor and haven't had any problems.

Just keep in mind that a fan isn't a good fix for an overgearing problem. I like to stay conservative with my setups. Well, conservative in the sense that I like to set things up so that they work without always being pushed to the limit. I set my cars up so that they do not thermal under normal driving conditions, then add a fan to keep it in the comfort zone for when I push it harder than I usually do. If your MM is thermaling and you aren't doing any really hard driving, I'd look to the gearing or even the motor, esc, battery combo.

What are you running anyway?

it never thermals. i alwasy stop it to make sure. i get about 5-7 minutes untill the temps get to 150. i need to order some pinions im just being lazy. setup is rusty with mm5700 and 3s1p a123 system. 16/87 gearing

You need to run it for 10 minutes+ and see what the temps get to. That will give you a better idea of where the temps are going to peak.

Seriously... 150* is very good. I know it feels hot... but it's pretty normal for any type of system, bl or not.

o i didnt know that. what is the temp range for motors and escs?

Motors and esc's vary, but usually I would not go over 180 on a motor personally, an esc usually has a cut off and then thermal, this is usually in the 160's I believe, not sure on the esc though.

dont run the motor over 100 degree C

sorry, my post was in F

sorry, i know you guys are talking about farenheit.
but i do not know how many farenheit 100 C is.
sorry bout the confusion.

No biggy! Some go by C so it's good that you stated that.

Now both crowds are covered!

And for those who don't use C or F, if you have blisters on your fingers, it's too hot.
But basically. If it is 0* C, it's 30* F if that helps.

150f is nothing to worry about. We have run other ESCs around 185F and never had a thermal. Then again, mine also hit the melting point of aluminum and didnt thermal :002: :036:

There is a °C to °F converter on Brians Calculator.

Bomp, melting point of Al: 1220°F! Your solder would boil before aluminium melts! (not quite, but you get the point)