I.M.P.B.A. Sept. SAWs

[Doug Smock]

Sponsored by Offshore Electrics

September 14th,15th, and 16th. at Blue Lake in Valdosta Ga. Exit 13 off I-75, 3 hrs. south of Atlanta. Plenty of lodging at exit 16.
No pre- registration required. Contest Director, Chris Harris.

If you have a better mouse trap bring it, or just come out and see what it's all about.

Steven Vaccaro and OSE have donated a 33"Delta Force mono that we will be having a raffle on.

If you have never been to a SAWs event you're missing out! So come up, down, over, or around to Blue Lake.

Great big thank you to Mr. Vaccaro and Offshore Electrics for your part in making this possible, it means alot to us all.

I'll post some pics and vids as soon as I get home and recover.

Doug
[email protected]

[Steven Vaccaro]

No problem Doug. I wish you guys smooth water!!

[Doug Smock]

No problem Doug. I wish you guys smooth water!!

Thank you sir! :D

Doug

[Doozie870]

Have you guys ever tried to get the motor really cold before a run, like with liquid nitrogen or something? I was reading on the mabuchi site that for every 1 degree the motor resistance changes by .39% I tried to copy the page to post, its pretty neat stuff.

[SJFE]

You can possibly use freion or a can gum remover..lol. Of course thats a little risky on an abs hull. Can you imagin peggin the throttle and the bottom of the boat just rips out

[Doozie870]

seriously, say you put the motor in the freezer over night and the outside air was 80 the motor would be say 32, 80-32= 48 48 x.39=18.72 thats almost 19% less motor resistance.

[Mich. Maniac]

If you go withthe freezer overnight it would also leave condensation in the motor as it warms. just a thought

[wickedgmc]

a cold motor is a faster motor, much more makes a motor cooler for 540 motors and could work. I know with my 1/10th scale race car I used to use a motor cooler and you could tell. It did end up with condensation on the motor but never caused a problem. This item ran on a 12volt ps, there are others ways to do it as well. Some guys kept the motors in a cooler full of ice to keep the temp down.

[Steven Vaccaro]

My cousin is a electrical engineer for a military firm. They do this with one of their products. They run a tiny radiator system to cool their brushless motors. For them its for both efficiency and more constant results in changing temperatures.

[SJFE]

There is a company who makes a self contained liquid cooling system for RC. It was about 200 bucks and the pump was around 11 grams. I posted the system on the old forum. I will do some digging and see what I can find.

[wickedgmc]

is this what you are talking about SJFE

http://www.gaz-on.net/TCS-Thermal-Cooling-System-for

[SJFE]

Yup. I had considered buying 2 complete systems. I had kiced around mounting the radiators up in the deck in cowels with fans behind them. One system for the esc and another directly to a water jacket. The problems I saw where the amount of coolant volume needed,weight & oh yeah...cost. Maybe a single system on a smaller boat would work.

[Mich. Maniac]

but unless you have a compressor like an a/c water is still most abundent and coolest. even florida coast line water is in the 60 degrees area I believe. just an opinion, cool but not all that needed.

[SJFE]

I believe Fluid posted once that the surface tempreture of most lakes and ponds in summer is almost 90 degrees. That really cuts down the amount of heat that water carries away. My aim was to use a synthetic coolant, forced air assist by fans & twin radaitors. IMO that would dissapate more heat than pond or lake water. I googled micro radaitors last night. The only hits I got where for computer systems. to big to heavy. It seems the system I suggested & Wicked found is the only one small enough. I would be looking @ 360 dollars for two systems. Not in the cards anytime soon.

[Doug Smock]

I'm thinking if you can't get enough cooling from the lake you run on, your setup is too hot.
As far as SAWs go, there are probably more racers that do not use cooling on their motors that those that do.
Most Saws boats run for less than 10 sec. and that's both passes.

Doug