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WATER COOLED HEAD

Old 05-20-2005, 10:05 PM
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AJ DRAGON
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Default WATER COOLED HEAD

Hi

I'm building a Crackerbox boat and i am going to use a HPI savage S-25 engine in it. The thing is I am looking for a water cooled head that will fit on the S-25 but I don't what will fit or where to look for one. Can any one help me out.
Old 05-21-2005, 08:06 AM
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Ron Olson
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Default RE: WATER COOLED HEAD

I don't know of a water-cooled head that will fit on that motor. If the motor is going to be exposed, it should be able to get plenty of cooling air.
Old 05-21-2005, 12:56 PM
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TERBObob
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Default RE: WATER COOLED HEAD

Could always make one ..
or if she is not able to cool via air good enough , you could also simply wrap some small copper tubing around the jug .
Old 05-21-2005, 06:09 PM
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Default RE: WATER COOLED HEAD

Terobob,
does the Cooper tubing realy work? I have been thinking about this for a while. We used to do this with smal nitro motors some 20 years ago. Haven't heard anyone going that way since then.

i even wonder if thin Al pipe could be use that is then smeared with heatsink compound.

Matt
Old 05-21-2005, 06:23 PM
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TERBObob
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Default RE: WATER COOLED HEAD

Yes , it does work . granted .... not as good as a water cooled jug , but it does indeed work . The only thing you really need to make sure of , is that it is a tight snug wrap around the upper part of the jug . ( or get yourself a KOOL KLAMP , if you can find one [&o] )

What I do , is once I get the tubing wrapped tight , I then take some silver solder ( high temp ) and solder the tubing together so that whilst I have it snug around the jug , it stays that way . I solder the upper section to the next lower wind and so on and so forth . I also try to get at least 3 to 4 wraps .
Old 05-21-2005, 09:56 PM
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Default RE: WATER COOLED HEAD

What size pipe? I seem to remember we attacked the old refrigerators to cut out some pipe. It would be about 1/8" diameter.
Matt
Old 05-21-2005, 10:33 PM
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TERBObob
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Default RE: WATER COOLED HEAD

correct-toe-mundo .....
Old 05-26-2005, 11:05 PM
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QuickMick
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Default RE: WATER COOLED HEAD

Just get some copper tubing, aneal the tubing and wrap the head as tight as possiable. Or have the head machined down for a waterjacket.

Mick
Old 05-28-2005, 02:29 AM
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corradopsi
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Default RE: WATER COOLED HEAD

the S-25 motor is actually manufactured by novarossi. if you find that a novarossi aftermarket head will fit, then you can just order thier watercooled head from thier marine engine to fit your S-25.
Old 06-01-2005, 12:11 PM
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txaggie08
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Default RE: WATER COOLED HEAD

just a question...........do the watercooled heads and/or pipes have flow going through them?

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