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Junior5150
06-26-2008, 12:21 PM
I took my Rio out for the first time yesterday and ran it till it could not plane anymore. The motor was very hot post run and was wondering if that is normal? Could a coil or jacket be installed? Anyone else modify the cooling at all? Thanks.

Junior5150
06-27-2008, 03:14 PM
I was looking at the cooling hardware more in depth and noticed that the cooling tube that is zip tied to the motor is very loose and barely touches the plate. Even if it were tight only a sliver of the tube makes contact anyway because the tube is round, so cooling is not that good right off the bat. I am going to use stainless .020 safety wire to attach the tube and spread a lot of thermal heat sink compound to see if that helps. If that doesnt work too good then I will try to weld the tube to the plate. Anyone else modify their cooling system?????? Will try to post pic this weekend.

chirotray
06-28-2008, 01:07 AM
Every brushed boat ive ever run has got pretty hot. I wouldnt worry too much about it. The motors are cheap, and youd have to get it so hot it would melt the boat to really damage it quickly. But if you want to tinker, why not wrap the motor with tubing?

Junior5150
06-28-2008, 01:11 AM
Here are some pics!

Junior5150
06-28-2008, 01:13 AM
Thought about that, but is there room to do it and still mount up ok?

chirotray
06-28-2008, 01:24 AM
Just looked at mine, and eye-balling it, i dont see a problem.

Junior5150
06-28-2008, 01:26 AM
Wonder if one of those silicone ones would work?

chirotray
06-28-2008, 01:30 AM
I dont think it would transfer heat. Just grab a small diameter piece of brass tubing and give it a try (or aluminum. Probably easier to bend without kinking)

Junior5150
06-28-2008, 01:36 AM
do you know much about brushless?

chirotray
06-28-2008, 01:47 AM
Yeah, what do you want to know?

Junior5150
06-28-2008, 02:09 AM
I have a himax ha2025 5300 brushless motor and esc. What are your thoughts for mini rio?

chirotray
06-28-2008, 02:15 AM
Well, if not mistaken, the boats mounts are for a 28 mm motor roughly(yours is 20mm). I know a lot of ppl use the ammo 28mm series as basically a drop in. As far as that motor is concerned, there would be some trial and error on prop size, because that is a high rpm motor. Maybe some issues with enough torque to get it spinning good.

chirotray
06-28-2008, 02:16 AM
Try it if you have it already, worse case.......it wont be fast, then try something else.

Junior5150
06-28-2008, 02:18 AM
The himax is a smaller dia. If i wrapped tubbing around it i wonder if that would bring it up to size. Do bl motors get hot like brushed? I just figured since i already have a bl motor maybe i should try it.

chirotray
06-28-2008, 02:22 AM
The diameter is really just an issue for mounting, wont affect anything else. To give you an idea of the torque difference: on an airplane, the himax spins a 3-5 in prop, and the ammos spin a 9-11 in prop. And they will get hot, but it tends to take a lot more to heat them up. They are very efficient and powerful.

Junior5150
06-28-2008, 02:26 AM
Now to figure out a way to mount!

chirotray
06-28-2008, 02:32 AM
Good luck, let everyone know how it works.

Junior5150
06-28-2008, 02:42 AM
will do!

Junior5150
06-30-2008, 06:08 AM
Here is a video I made from saturday. I tried the brushless the next day but it made my batteries so hot i couldnt touch them so I converted back. I think the brushless needs a 3s pack not a 2s pack, ny suggestions?

http://youtube.com/watch?v=l1ujJNRBjuk

Bigmax
06-30-2008, 08:22 PM
It's not a 2S or 3S issue it's a C rating issue... and your pack doesn't have a high enough C rating for the brushless motor you're using. My Ammo 35-28-3900 and 2S 1250 mah 20C pack will get very warm / hot and that pack is good for 25amps.

Junior5150
07-01-2008, 12:17 PM
Thanks for the info....I will have to do research on the c rating and my particular motor/esc. Interesting info.

Manny
07-01-2008, 04:22 PM
Check out the cooling system on a mini rio here, scroll down to see pics.

http://www.subpirates.com/viewtopic.php?f=45&t=3743&st=0&sk=t&sd=a&start=840

Junior5150
07-03-2008, 09:06 PM
Here are some pics of the coil I just fabricated. Its a little tight but it fits. I used brass/copper (not sure) and soldered it together thinking the solder would give more area to help the heat move to the water....we'll see! :banana:

Junior5150
07-03-2008, 09:08 PM
More......

Diegoboy
07-03-2008, 11:23 PM
Wonder if one of those silicone ones would work?

Here's my ammo 28-35-2700 with a silicone water jacket!

http://www.diegoboy.com/misc/100_2375-sm.jpg (http://www.diegoboy.com/misc/100_2375.jpg)

Jon K
07-14-2008, 11:05 AM
That ammo is brushless? What other hardware do you have to support it?

Diegoboy
07-14-2008, 05:00 PM
That ammo is brushless? What other hardware do you have to support it?

Yes it's brushless...
Here's my HW

http://www.diegoboy.com/misc/100_2297-sm.jpg (http://www.diegoboy.com/misc/100_2297.jpg)

Jon K
07-14-2008, 05:03 PM
Those are the custom made rudders? Does anyone make anything semi bolt on thats similar?

Diegoboy
07-14-2008, 05:09 PM
No. you're right, they are custom made. They are also direct bolt on replacements. No mods needed to install.

Jon K
07-15-2008, 07:43 AM
No. you're right, they are custom made. They are also direct bolt on replacements. No mods needed to install.

Do you sell them? Does someone else?

Diegoboy
07-15-2008, 08:53 AM
Do you sell them? Does someone else?

The user Lonewolf (Dave) made them, and he can make just about anything you need! He's a great guy!

Jon K
07-16-2008, 09:27 AM
The user Lonewolf (Dave) made them, and he can make just about anything you need! He's a great guy!

Thanks! How much do they weigh in comparison to the stock pieces? I am worried it'd way too much and make the boat drive funny and slower.

Diegoboy
07-16-2008, 07:21 PM
I can't tell you how much the stock stuff weighs, but this set weighs in at...


They weigh 25grams combined or 0.0551155655 pounds
It doesn't sit any lower in the water with them installed either