Water Cooling Advice Needed

[GregS]

I just received an Oval Master 26 Advanced kit from BBY that I am about to begin building. It contains a Graupner 700 motor, RC Hydros esc, and an Octura X642 prop. Randy of BBY said it would not require water cooling as it is not a hot setup. However, I thought it might be a good idea to install it anyway as the motor and esc should run cooler and last longer with it. Lately I've read some posts saying that water cooling has very little positive cooling effect on brushed motors and esc's so now I'm wondering if it's beneficial or a waste of time. If I'm going to do it would be better to do it now while I'm building rather than after the kit is finished. Any advice on this would be greatly appreciated. Thanks.

[SouthJersey-FE]

Randy knows what he is talking about. If you stay with that combination you will be fine. If you plan on changing props or going to 05 motors then it will be needed. hit www.offshoreelectrics.com Steve has the best water cooling kits i have seen to date. In my opinion its fine as is.

[Pagemaster]

Randy knows his stuff, but with a x642 i would definitely water cool it somehow. Not because I sell the jackets! Its because if you run for long periods things will heat up, its added insurance. I would solder some tubes to the brush tabs. Its easy and cheap($1-$2 for 5/32 k&s tubing), but works great. There is a "how to" on my site to make the brush cooling.

Steven
www.OffshoreElectrics.com

[SouthJersey-FE]

Steven & Randy both know there stuff. Looks like I stand corrected...lol I didnt take into account extended run times. Of course I water cool everything posible. Its an inexpensive way to protect my investments. Sure the water pickups may add drag. But i'll take some drag if it means esc's and motors last longer. Oh and thanks for getting the brushless system out in the mail today Steven...The servise @ OffShore is excellent. Second to none.
Regards,
Tom G

[Pagemaster]

No problem Tom.

[GregS]

Thanks for the advice guys. Steven: Are you recommending using brush cooling over the water jacket or cooling coil methods? Is it possible to do both? I plan to use a bent brass tube as a pickup which will pickup the prop wash. Since it is a surface drive this should have minimal drag effect.

[SouthJersey-FE]

A water jacket would be better than the coil. The jacket puts the water in direct contact with the can.

[GregS]

I found the answer to my question on the Offshore site - the water jacket and brush cooling can be used at the same time. However I was wondering if I should have the water outlet going through the transom or through the side of the boat or if it matters.

[Rex R]

I've seen done both ways. there are some advantages to both; side exit, (typically left) easier to check for water flow(at speed & racing). rear exit, less risk of damaging the hull if you sideswipe stationary objects. think it is largely personal preference coupled with space availible and type of use(sport, oval racing etc.). I'm reasonably sure that other folks will prolly chime in with their opinions.

[Pagemaster]

The more cooling the better. I recommended the brush cooling because its very inexpensive.
Steven
www.OffshoreElectrics.com

[GregS]

Thanks for all the help and advice from everybody.