Model Forum / Radio Controlled / Water Models / August 2005

I am a newbie to R/C boats but have a LOT of
experience with R/C cars...I have an electric boat
(ABC Hobby Super Hawaii) which has:

* 2 550 silver can motors (ie: "stock", "mabuchi")
 which power 1 prop
* 2 7.2v battery packs (3300 mah)
* Traxxas/Novak EVX ESC from an E-Maxx w/ a cooling
 jacket added
* 1 water pickup installed which uses 3/32" I.D. fuel
 tubing

Currently, the cooling system is simple...1  3/32"
line from the pickup, through the ESC cooling jacket,
then out of the boat.  But, the ESC jacket has 2
water passages.  I saw a Traxxas ad for a boat with
a similar setup (2 motors, same ESC) and they only
had one water passage being used.
* Would installing a "T" so "fresh" water would pass
 through both passages help cool the ESC at all?  Or
 maybe run the same water through one passage then
 through the other before exiting the boat?
* The motors get very hot.  They are too close to each
 other to use cooling tubes which surround the motors.  
 Would it be helpful to attach some straight brass tubes
 to the top of the motors (not much contact area!) and
 run water through them?  Or should I consider snap-on
 aluminum heat sinks combined with better airflow?  Any
 other ideas?  I can post a pic (in the appropriate
 group) of the motor setup if necessary.
* Final question for now:  Assuming I find something to
 cool the motors w/ water, is it possible to cool 2 550
 motors AND an ESC using one 3/32" I.D. water pickup?
 I'd estimate top speed is about 20mph.

Any help would be appreciated.

Thanks,
Scott