ncornacchi
08-08-2009, 06:40 AM
I know this topic has been beaten to death, but I'd like to share some latest input on cooling. I have, as many, have been chasing the cooler components dilema. I never felt that the bored hole in the rudder was large enough to allow more water volume to the components, so I've been having some fun with it. The red Ul has some custom bent tubing, water pickup is somewhere just around the top of water while planing, so theres little drag or resistance. The plumbing has a Y so I can direct cool water separately to the motor and ESC, then it Y's back out. The boat runs like a horse, never heats up....The other pic is a small scoop over the rudder slot water pickup. Just used a copper "buchanan" (electrical squeeze type connector) cut in half and glued over slot (after reaming out the slots). On the yellow UL, I get a little chime walk, but is adjustable. The white UL is running a Feigo 7XL with Hydra240...This boat screams and spits water out like a fountain! In my opinion, water flow problem solved, onto hotter motor setups. BTW, I have seen no noticable decrease in speed (my e-Logger/GPS is out for repair), so I can't base my observations on true data yet regarding comprimise of speed, but I'd rather swap out a motor for larger and not worry so much about frying components...Just my 2 cents.....Grim...you've done a hell of a job giving us a baseline RTR,,,we are all just having fun and trying to make it a better machine