Boat is running a little hot

[Maltrio]

I have a 26" long 10" beam great planes Turbostar. I run a Kyosho Endoplasma 16 turn double motor and a GM Champ reversible esc. I took it our for a run today and noticed that the motor was hot enough to fry some water and the esc couldn't be touched for more than a second. I'm pretty sure that a nice water cooling system would at least cool down my esc but my motor might be a little more harder to cool. The motor is mounted with a metal bracket that covers about 1/2 of the can. I'm pretty sure that water cooling the motor is outta the question but I was thinking maybe installing heatsinks on the metal bracket or buying a cheap cooling fan. Either way, I'm still thinking about water cooling the esc (and seeing that nice little spout of water exit the boat.) but I'm open to ideas about cooling the motor. Thanks in advance.

[BoatDoc]

look into one of the motor mounts that only bolts to the front of the engine. that would give you room to put on a water coil. if you can adapt it to fit the hull, it would be a good idea. on the electric that i just built i was told to expect 185 degrees on the motor if i go over 1 min & 15 sec!!!! that's with water cooling! that's hot! a heat sink may help, but they work by having airflow. and airflow is something that a sealed up electric hull doesn't have. hope i helped...i'm new to electrics myself.

[Maltrio]

Hahaha, my boat has lots of air flow. The boat has 4 built in air scoops that I am also trying to alter somehow so they won't cause my boat to sink if it flips over. I will look into those front mounting mounts though. Thanks. BTW your blizzard looks great, looks like you're going to have a blast with it!

[ahab2]

Post a picfor us so we could see what it looks like. inside the hull I have some exerience in water cooling that kind of boat But a difrent motro mount is recomended.

[BoatDoc]

could you post a pic of that turbostar? i've heard about 'em but never seen one. about that blizzard...i absolutely love it! and haven't even driven it yet! it's inspired a little insanity from the guys at the LHS. maybe there'll be more boaters around here soon (2 guys, at least, are now building boats). but if we can see that turbostar, the guys around here may be able to throw a few more ideas at you.

[Maltrio]

About those pictures, I bought this boat off ebay a little while ago and seeings as I don't have a digital camera I guess I can only show the pics that went with the auction. I will try hard to get my hands on a polaroid camera tomorrow to take some more pictures. I will caution you though, these pictures are pretty sketchy.

[Maltrio]

More

[Maltrio]

This is a side view.

[ahab2]

How fast dose it go?It looks like a god design from those pics

[Maltrio]

Another side view.

[Maltrio]

Transome view, sorry again for the quality of these pictures. I will try to take some better pictures tomorrow with some better lighting.

[Maltrio]

Well, I guess the heat finally got to my esc. I was running my boat today and everything was going great. I ran a 1500 pack, then brought in the boat after it was finished and let it cool off. Than I ran a 1900 pack and 2 1700 packs (with cooling off periods in between runs.). On the last 1700 pack, my boat stopped in the middle of the little pond I go to. I waited a minute to see if it was the temp. protection and the esc just got cut off, but that wasn't the case. I had to reverse the boat (forward wouldn't work) back to the shore. I took off the top and smoke started pouring off my esc. I brought the mess home and surveyed the damage. The plastic case melted to my heat sinks and it took me about 15 minutes to get it off. I found a giant charred hole in the middle of the esc and after a little testing I came to the realization that its hopeless. Hahaha, I guess I really do need to look into cooling systems. I will probably get a Tekin marine esc with a built-in water cooling tube.

[Chris LaPanse]

Or if you can afford it, get an RC-Hydros water cooled ESC. Up to 90A continuous on some models, and water cooled on all.

[Pagemaster]

Tekin is old school. Look for a Rc Hydros esc

Steven Vaccaro
www.OffshoreElectrics.com

[DLM]

26" long and 10" wide on a 16t endo. you say no cooling. Oh boy! Sounds like a vw motor in a 35' motor home. First you put a 700-8.4 Grauper motor in and a 440 or 642 prop on 12-3300 batteries and hood and can cool the 700 and get a rc-hydros esc which is watercooled and waterproof. Ok, now you have a hemi 440c.i. engine in a 35' motorhome and you are home free. Anything less, is asking for trouble , big time and money down the stool also big time. Like the guy said, pay me now or pay me later!

[Maltrio]

Hahaha, ya, no cooling= esc death. I'm looking at some Graupner motors to stick in the boat and I'm trying to find a reasonably priced esc. For those props, you're talking about the octura x440 and x642 right?

[Maltrio]

Anyone know any forums where boat access. are listed. After seeing the prices for some of this stuff I guess I will just have to keep hunting on ebay and any other boat forums I can find.

[DLM]

www.rc-hydros.com and subject matter type in rumrunner or it will be spam. Prices of esc for a 6-14 and 60 amp for 70.00. watercooled and waterproof. Reason i say waterproof is one drop of water on any other esc and especially car esc isone dead esc. Even if you water tight package the esc, water seeps in and one dead boat if in middle of pond. Retired, so no afflia. with anyone and yes 440 and 642 Octura props.

[Maltrio]

Does anyone know the make/model of this boat (on the right)? It is 29" long with an 8" beam. Thanks for the help

[Maltrio]

Another picture...

[DLM]

El Vee , hobby-lobby, cost $33.00

[DLM]

motor-700-8.4-cells-12-3300-esc rc-hydros 60 amp.-prop 440 or 642 and go to site of Edina yacht club in Twin Cities. www.emyc.org

[Watercadet]

Uhh I think that is a Traxxas Blast...

[Watercadet]

Uhh I think that is a Traxxas Blast...
http://www.traxxas.com/products/marine/blast/trx_blast.htm

[550racer]

thats not a traxxas blast its the electro vee

[Maltrio]

I think its to big to be a Blast. Isn't the blast only like 24" long?? It looks more like the Electro-Vee that DLM said...

[MikDee]

It's an Electro Vee

[DLM]

I have a cutdown version and with a 1.2 pitch and a 42 mm plastic prop churns 25 mph on 12-2400!

[Maltrio]

Well, I've taken out the ESC and decided to just throw in an MSC. I kept the 16t motor in there and focused all of my water cooling efforts on it. Hopefully everything will run a little cooler?? Can anyone see any problems with this? Thanks

[alphaslider]

Hey Maltrio check the Turbo Vee II thread, we have been getting into motor and esc cooling. That might help I hope

[Floppy]

If you are proficient in soldering you can get 2 peices of 1" long brass tubing and solder them to the brush tubes on the motor endbell. This way you don't need a new motor mount and it provides cooling directly at where most of the heat is coming from (the brush/comm connection). Run water through the tubes and it should help the motor last longer, and run cooler.

A cooling coil is just as effective, but you have limited space so i suggest this method. Having both is best if you can... but no need to go overboard, keep it simple.

BTW to the person who said 1 drop of water on a non-waterproof ESC = dead esc. Wrong in most cases. I have 3 ESC's all of which have been subjected to water at one point or another, multiple times. They just stop working when they get too wet. ~ Turn it off, unplug batts, and wait about 24 Hrs for it to air-dry (or use hair dryer).~ The ESC works again!

You only have to be worried about the receiver, as they seem to die and not recover from water. ESC's (in my case) have fully recovered every time they get soaked. I'm not saying water is good... still avoid it, but don't get paranoid about water protection.

Also, the motor is 16T, but is it single/double/triple/quad wound? If it is tripple/quad or maybe double the prop you are using may be too big. A triple/quad wound motor has little torque and higher top-end RPM's, and it may be struggling to turn the prop & causing your ESC to burn out due to the increased amp draw. Single winds seem to work much better on boats, in my experience. Concider a torque ring too, sacrifice RPM for torque. (A steel cooling coil can act as a torque ring too... but i dont think you can fit one in your circumstances)

Remember, turning a large prop slowly is much more efficient than turning a small prop quickly.

--Blake

[Chris LaPanse]

But how many of those ESC's can RUN ontinuously underwater. I've run my boat for 20 minutes, and brought it back in and the RC-hydros ESC was sitting in a 3 inch puddle of water. It ran perfectly, even while it was soaking. Needless to say, I have installed an autobailer after that, but I might not still have a boat with a normal ESC