Expresscraft Thundercat

[tminustom]

Help!

I bought an Expresscraft Thundercat with a Zenoah modified 260, and I need a little guidance on the plumbing. Does anyone have a diagram of which water lines go where, from carb, exhaust, rudder, intake and outlet? I'm new to rc boating, so any help would be greatly appreciated.


T

[Hydro Junkie]

It's kind of personnal preferrance as to how you run your water lines. Some run to the water jacket first, then the exhaust and lastly to the tuned pipe. This uses one "in series" water run. The benefit is it's simple to install and follow. The bad thngs are it can be clogged so nothing gets cooled and as the water goes through each area, it gets warmer, lowerring the cooling ability of the water. The "in series" run can be configured into any order your prefer. Some split the water supply line, sending water to two, or even all of the points. The benefit is everything gets cold water, ensuring cooling. The down side is lower water pressure at each point past the splitter, multiple discharge points to make it possible to verify everywhere is getting cooled, more complex plumbing, and the possibility of getting clogged. The third school uses multiple pick ups and dumps. The positives are it's almost imposible to clog all the pick ups and everything gets cooled. The negatives are an extremely complex cooling system. Now that you know what you're up against, see if you can come up with something that will work for your application. One last note, WATER LINES DO NOT GO TO THE CARB!!!!!!!! There are two fittings on the carb, one is a supply and the other is an excess fuel return. Both of these lines hook up to the fuel tank, one to the pickup tube and the other to a return tube. The tank should also have a vent. This is LEFT OPEN. Hope this helps

[tminustom]

My error, I meant the exhaust manifold and the spark plug head, not the carb. Thanks for the directions!

[Hydro Junkie]

Hope I didn't overload you with info, as I have a bad habit of giving too much in one shot. Just so you know, I've seen water lines hooked up to the carb in the past. I've seen fuel lines hooked up to cooling jackets, so this kind of mistake does happen.