brushless 1/5 4wd conversion about to begin! couple questions.

[KaztheMinotaur]

That amazing. Where do you get those little gems at?

So heatsinking the hot side is what brings it down to single digit temps? Wouldn't that be a little too much on the motor or ESC?

Would that run on a 2500mah 3S LiPo?

[Mentat]

Originally Posted by KaztheMinotaur

That amazing. Where do you get those little gems at?

So heatsinking the hot side is what brings it down to single digit temps? Wouldn't that be a little too much on the motor or ESC?

Would that run on a 2500mah 3S LiPo?

yeah you can. they are available everywhere. they are also known as Thermoelectric coolers. www.newegg.com is one place. just google it

[KaztheMinotaur]

There are a whole bunch on Ebay also.

The boat ESC I bought has large heat sink on it...I could just lay the cold side right on the heat sink. Right?

You could put one on the motor also but you couldn't cool as much of the surface area of the motor since it isn't flat...

I found some that use 45.6 watts. How much amp draw is that at 12V?

[Mentat]

Originally Posted by KaztheMinotaur

There are a whole bunch on Ebay also.

The boat ESC I bought has large heat sink on it...I could just lay the cold side right on the heat sink. Right?

You could put one on the motor also but you couldn't cool as much of the surface area of the motor since it isn't flat...

yeah that would work

[KaztheMinotaur]

I was editing my above post while you were applying but I think I answered my self.

If I am reading the product specs properly then that one draws 3 amps. The larger 136.8W one draw 9 amps.

http://cgi.ebay.com/45-6W-TEC-Thermo...3A1%7C294%3A50

http://cgi.ebay.com/136-8W-TEC-Therm...3A1%7C294%3A50

That is a little less than what it calculates out to be...

[lydiasdad]

tower sells these. draws 3 plus amps @12v. http://www3.towerhobbies.com/cgi-bin...C%2FB%3Eectric

[zeropointbug]

Originally Posted by Mentat

Jetdry makes an excellent coolant if you plan on running something like that. I use to build custom PC water cooling kits years ago. Done lots of research and testing on what works the best. JetDry is by far the choice. Also you could consider a Peltier based cooling system, they work so well that u can even have ice build up on one side of the cooling plate. Some videos here

http://www.youtube.com/results?searc...q=0&oq=peltier

This is a good example here on what u can do with it.

http://www.youtube.com/watch?v=3fYUVsydMmA

Its funny because u can make power with heat with a device like this.

A peltier plate? And why would you want condensation?

[zeropointbug]

James, that looks great! I have always wanted to do something similar, but at some point it gets too complex and heavy for the average Revo truck... the esc in a sealed box is what I'm talking about.

The Europe made mini pump/radiator system that emaxxnitro posted would work IMO. That thing popped onto the forums 2 years ago IIRC, no one as far as I know has used it, here anyways.

[Ryu James]

Originally Posted by zeropointbug

James, that looks great! I have always wanted to do something similar, but at some point it gets too complex and heavy for the average Revo truck... the esc in a sealed box is what I'm talking about.

The Europe made mini pump/radiator system that emaxxnitro posted would work IMO. That thing popped onto the forums 2 years ago IIRC, no one as far as I know has used it, here anyways.

yeah, at this point i am still going to shoot for just using a fan and if that doesnt cool it enough then i will go with a liquid cooled setup like those ones on frozencpu.com. the peltier stuff is too foreign for me at this time. but i am thinking my esc/rx box with a 40mm fan is gonna be sufficient. we'll see i guess.

http://www.espritmodel.com/index.asp...OD&ProdID=5393
i am surprised lutach didn't mention this esc, unless he already did, because i am pretty sure he does or used to have one. Maybe he didn't like it? Well it can handle 14s and i think that is what you said was ideal. If you don't mind the price, 545 dollars , then it looks like it might be the one for you. This way you won't have to worry about water cooling.

[KaztheMinotaur]

Here is the ESC I am getting: http://www.maytech.cn/eng/proesc.asp?type=6

It is the 200A 10S HV ESC $257 shipped with USB programmer. Several of the fast electric boat guys are saying good things about it. Dual 10 guage power and motor wires. I have some 12V computer fans to try for cooling + I might try the peltier also. The ESC is waterproof so I wouldn't think condensation to be an issue. I don't think there will be much, if any, anyway since the ESC will be warm.

[Ryu James]

right on. i dont know how you guys manage to find all these brands i have never heard of. must do some good searching on the web. that guy wigdowg on the HBF is using a schulze that has brakes. it was like $550 i think. that is the only esc this size that i have heard has brakes. do either of these controllers have brakes or will you be using mech brakes also Kaz?

btw, just so you know, the integy brakes do work for the front hubs like you showed me in that pic but harder to make work on the rear. they still work but have to use the dremel. i will have to post some pics. i am gonnna have a small piece of aluminum welded on to all of my alum. hubs and then drilled and tapped so that i can mount up the brakes really solid. i just orded a small tap and die kit. i wish i had my own little cnc and welder, etc

[KaztheMinotaur]

No that ESC doesn't have brakes...I will be using Integy.

I'm glad they work. I would rather have them on the rear though. I was thinking that you might be able to "build up" the rear hub with JB Weld to make a better mounting area.

[nitrostarter]

Ryu: Just a suggestion, if you end up using watercooling, you probably wont be able to use that box. It looks like a tight squeeze as it is, but you will have to add tubing to connect the cooling plates. They add a bit of size to the esc.

Otherwise it looks amazing! I can wait to see this in action.

[KaztheMinotaur]

I ordered (4) 5000mah 30C 5S Zippy batteries this morning.

I was looking at the gear that Linc mentioned. After 40T the next size is 48T which is way too big. I wish we could get a pinion smaller than 15T. The speed calculator says 72.887 mph. I know that is theoretical but it still seems way fast.