Best water pick-up ever!

[H&MWill]

Wow, didnt mean to stir this up LOL. Was just stating what I had heard a few years ago from some smart people on this forum and other places. Oh well whatever works for ya. Have a good day. Will

[Chuck E Cheese]

there is no question about it, don is right. if water flows through the system to fast it can not absorb the heat. everything is designed with a optimal opperating tempature, determined by tolerances. just because the water coming out and the outside can of a FE motor is cooler does not mean the internals are colder. it is possable to cool the outside can so fast that the rotor and stator do not have a chance to transfer maximum heat to that can. when you check the tempature of the motor it may be cooler in places (outer can) but the internals can verry well be hoter.
also, yes you can blow lines even at slower speeds. i know this from experience and none of my boats are faster than 62-63mph and i dont restrict the flow other than by the size of the lines and water outlets.

[gerardobrandao]

Hello!

An water pickup that drives alot of water trough the cooling tubes is awesome, altough, mine opinion is that you have to get the correct placement for it!
I putted mine near the keel of mine DF35 and tried everything to trim the boat up...weeks after weeks....It was chine waliking a lot and dindn´t have a sable behaviour..after 2 months i thought...What a a hel...let me try taking off the water pick up......I couldn´t don anything more to trim the boat...i tried everything....
The boat behaviour was from water to wine... :D
The issue is...look where you put it...

regards

[Doug Smock]

When things slow down for me I'm going to build a suitable water cooled heat exchanger, fire up a 30,000 BTU torch and a video camera, and put this to bed.LOL
Do you want to make coffee, or do you want to cool your componets?? Think about it.

The absolute bottom line is this. If you can't get adequate cooling by means of what we consider standard water cooling, your boat has the wrong set up, it is poorly set up, or you are running the wrong prop.
Just my .02 till I have more time.
Hang tough fellas!!
Doug

[egneg]

Doug has it right. Maximum Flow = Maximum Cooling!

[westbeach]

Heat from components needs time to dissipate into the water (thermal exchange) inorder to properly cool the component. This is done by utilizing a bigger bore tubing, slows water rate down when entering the component then back to a smaller diameter bore tubing to quickly evacuate the thermally heated water.

[Brushless55]

Doug has it right. Maximum Flow = Maximum Cooling!

Bingo!
I run the stock cooling on my SV's with a bigger hole in the rudder pickup and I get much more flow out of the system, and get this I can run any prop I want and my temps never get above 125* no matter what and usually hand at 110* and lower

I think some are over thinking this

[forescott]

I think some are over thinking this

Most people don't run 100mph, or have big block chevys in their rc boats. I'm talkin your basic 40mph sport boat. Can't have too much water @ that speed.

[Brushless55]

Most people don't run 100mph, or have big block chevys in their rc boats. I'm talkin your basic 40mph sport boat. Can't have too much water @ that speed.

Yes!

[igottalongone]

I didnt know that, do you happen to have the part number?

Hi, Steven...
Call Trudy and tell her you want part "(SMWP) Stern Mount Water Pick Up"
They are Shweet!

[FRED]

water-pikup

nothing

[785boats]

Westbeach has hit the nail on the head.

Heat from components needs time to dissipate into the water (thermal exchange) inorder to properly cool the component. This is done by utilizing a bigger bore tubing, slows water rate down when entering the component then back to a smaller diameter bore tubing to quickly evacuate the thermally heated water.

That's the theory I used when I up graded my home made ESC cooling plates from having only one pathway cross drilled through the plate (in the usual 'U' shape), to having 3 pathways. This effectively increases the volume of water in the plate at all times & it slows down as it is divided evenly over 3 tubes & then speeds up again on exit as it recombines at the outlet tube. The ESC with this plate definitely runs cooler than it did before in the same boat & setup. Might try 4 cross holes next time.
The photo shows the three cross holes in the plate about to be re attached to the ESC
Cheers.
Paul.

[FRED]

pickups

nothing

[ManuelW]

Hello Guys,

just want to join the discussion. First a few words about myself. I've been studying mechanical engineering for 5 years now and topically making my masters degree. Within these 5 years I also learned a lot concerning this topic due to lectures in thermo and fluid dynamics as well as heat exchange.

Therefore I can say, the more water flow, the better it is. The idea of slow water because it needs time to heat up is just a so-called hoax. So I think limitation should only be a choice when the pressure gets too high that the flexible hoses get off even if they are already secured.

And as I also run several FE quite fast FE boats for several years now I can say, the experience approved the theory. So my statement: The more - the better.

If interested I might try to explain the theory behind it with an easy explanation.

Best regards,
Manuel

[mm123521]

I'am with Manuel:

I am a degreed engineer (for 35 years now) at an industrial plant.
One of my projects was to design a $1,000,000 cooling system for our process.
It involved many large heat exchangers.
This project gave me an oppertunity to study heat transfer.
All the principals involved are exactly the same as cooling an RC motor.

I am absolutely sure that more water cools better.
I am absolutely sure: the faster the water flows the better.
Slowing down the water flow will result in a hotter motor.

Mark