New cooling gimmics

[ray schrauwen]

Just in from where else, HK: Liquid coolers for cars & Helis

I suppose you could try it on a boat too?? Maybe too much adieu about nothing much.

[properchopper]

Hmmm...., thinking, thinking.....

[gsbuickman]

Wow, your right, what a gimmick

I suppose some hull configurations might make use of the radiator, I can see this being real popular with the scale crawler guys, or on a water cooled nitro m/t setup. I suppose the gas boaters might appreciate this too......

[T.S.Davis]

I'd like to have the little pumps. Then at the end of a heat when you're sitting in the middle you're pumping fresh cool water through and drawing no amps.

[longballlumber]

I'd like to have the little pumps. Then at the end of a heat when you're sitting in the middle you're pumping fresh cool water through and drawing no amps.

http://www.dx.com/p/diy-electric-motor-mini-water-pump-229082?tc=USD&gclid=CMTHtLPjtb0CFRQV7Aod3DEApQ#.UzW0TfldV8E

Question is can you have it "inline" with the normal cooling loop, but still turn on when the boat is at rest.

Later,
Ball

[longballlumber]

Another one...

http://www.ebay.com/itm/Mini-Inline-...-/331090631176

Later

[ray schrauwen]

That's a nice find, cheap, I like.

You could have it with an intake at the keel of a mono and just use the existing exhaust. I think it could be incorporated. I think you might need a 1 way valve at the most if the pump can't stop back flow.

http://www.dx.com/p/diy-electric-mot...Q#.UzW0TfldV8E

Question is can you have it "inline" with the normal cooling loop, but still turn on when the boat is at rest.

Later,
Ball

[RandyatBBY]

Hmmm...., thinking, thinking.....

Me too.

[kfxguy]

Might be a good idea if it doesn't impede flow at speed...... Thinking too.... Third channel to cut it on and run off the Bec maybe..

[Darin Jordan]

I'd like to have the little pumps. Then at the end of a heat when you're sitting in the middle you're pumping fresh cool water through and drawing no amps.

I'm not sure the temperature of your lakes there, but at Legg Lake, the water is 85-degrees... which isn't all that effective for cooling.

Carrying "cool" water on-board has a cost.

One of the 1/10th Scale guys here uses a home-made version of this system, and it works well for him.

For anything P-Ltd and smaller, my experience is that the weight penalty is going to be significant.

For the larger stuff... absolutely, but then, you don't need "micro" sized pumps, etc., to make it work.

The successful systems I've seen use Sullivan or ??? fuel tanks as ice-water reservoirs and fish aquarium or electric nitro/gas fuel pumps as closed water systems.

[T.S.Davis]

The sooner you can get your motor back down to 85 degrees from a 130+ the better. I don't think the benefit is in the cooling during racing but is instead after racing. Sometimes at the end of a heat your sitting out there boiling in your own juices.

The way around the impedance of the pump at speed is to have a bypass loop with a little fish tank aquarium check valve in the bypass. We do this on fire pumps. All be it at 1500gpm or so. But same concept.

In a boat the pump could run all the time but would only be moving water itself when the boat was at rest when the pressure coming from the pickup was low enough to allow it. It's a neat idea.

I've been threatening to put a radiator in the turbine of an 1/8 scale for years. They make very cool radiators for PC's that would fit right in there.

[T.S.Davis]

Yikes, that second pump Mike posted pumps at less than 1 cup per minute. I have no clue if that would have any benefit at all.

[longballlumber]

Yikes, that second pump Mike posted pumps at less than 1 cup per minute. I have no clue if that would have any benefit at all.

I didn't do the conversion, but your right 1 cup a minute.... That presents the next question: what is the optimum flow rate to maximize cooling the unit. That number is going to vary based each individual cooling system... material.... mass... chemical make-up of water...

Wait this is starting to sound like work!

[JohnZ]

Don't forget the Prestone.

[gsbuickman]

I'm not sure the temperature of your lakes there, but at Legg Lake, the water is 85-degrees... which isn't all that effective for cooling.

Carrying "cool" water on-board has a cost.

One of the 1/10th Scale guys here uses a home-made version of this system, and it works well for him.

For anything P-Ltd and smaller, my experience is that the weight penalty is going to be significant.

For the larger stuff... absolutely, but then, you don't need "micro" sized pumps, etc., to make it work.

The successful systems I've seen use Sullivan or ??? fuel tanks as ice-water reservoirs and fish aquarium or electric nitro/gas fuel pumps as closed water systems.

Hi Darin
Your right about the sealed cooling systems, I've seen several systems & I've designed several onboard systems myself just to be different. A second aux. fuel tank makes a great coolant reservior. Most guys run a windshield washer pump powered off a 7.2v NiMH pack & pump water, antifreeze, windshield washer fluid or rubbing alcohol as coolant. I think a killer coolant would be some boelube super coolant diluted with rubbing alcohol so it won't gel back up on you.

I've seen a lot of onboard systems on 1/8th scale m/t's because they have chassis pans spacious enough for them, I just don't see how a sealed cooling system would be effective on Fe's with excess weight & weight distribution in mind. Weight transfer from coolant sloshing around has adverse effects on things sometimes too.....