water resistant air scoop idea

[wparsons]

I have done something that is similar but without being water resistant !

I made the motor compartment in the rigger water proof from the rest of the tub and presto an air cooled OR motor that get a good splash each time it launches.
Once I get it setup right the motor may get drip/spray fed water from the esc cooling circuit.

see my thread here
http://forums.offshoreelectrics.com/...ad.php?t=22903

I may even do it to the big Cat !

There was a small 6 cell nicad cat designed that way (may have been a Jay Turner design, can't remember though). The motor and batteries were in an open bay with a sealed radio box.

http://www.airagestore.com/plans/rc-boats/electric/the-xl-cat.html

I bet that boat could be turned into a really quick indoor spec racer with the better battery/motor technology out today.

[martno1fan]

Well in my case my motors are outrunners and the mounts do not have water cooling, therefore they get pretty hot. So some cooler air inside the hull would do my motors some good.

Why not water cool the mounts ?

[dont slow down]

I can't, the mounts don't have cooling ports built in and even if I made some attachment it wouldn't do much since it's an outrunner.

Here are the mounts I have.

http://www.venom-group.com/itemdesc.asp?ic=1963

[785boats]

Don't slow down.
I don't know why you think water cooled mounts on outrunners wouldn't do much. They do a helluva lot.
With the mounts you already have in the boat, why not try just bolting on the aluminium part of this mount to the front of the motor. If space is limited you could even cut the 'wings' off where the mounting screws attach the side plates. They won't be needed.
I always use some heat transfer silicon between the motors & mounting plates for added efficiency.
http://www.offshoreelectrics.com/pro...prod=ose-80100
Just think it would be a cheap easy fix for you.
Paul.

[dont slow down]

I'm not saying water cooled motor mounts won't do anything, I'm saying mine won't. There is nowhere to run water through them. My motor mounts are a clamp style. My motors don't have mounting holes to screw anything onto so the mount you posted won't work either. Eventually (and I do mean eventually) I will replace the motors and at that point I'll get water cooled mounts and motors that can be water cooled, but until that day I was just toying with the idea of air cooling them, wouldn't need to be a lot, just a little. That's why I was thinking of the auto bailer and how I could incorperate those kind of physics into a air vent that sealed if turned upside down.

[Simon.O.]

I have said it before on many threads.
There comes a time when we must ask ourselves this: Just how much cooling do I need. If I need so much cooling then is there a way to reduce the need to do so.
Yes there is !

I am not one to pour water on good ideas as I have had a few good ideas that have been helped along by some very talented people here.

Air cooling can be done and I have proven it. There are many ways to cool and we sometimes must go back to basics and ask: Just how much cooling do I need and is there a better way to do this, such as review the whole setup ?

Let the air scoops roll as I have at least two hulls that will get them soon.