Water Cooled

A

andyinchville1

Guest
HI All,

In an effort to extract more performance out of our engines I have disassembled my helpers engine (yes his, in case I couldn't get it back together...but don't tell him!) to see what makes them tick....

In looking at the relative thinness of the cylinder walls and the relatively small cooling fins, I was thinking to myself it may be a good idea to improve cooling before applying power enhancing techniques (more power equals more heat)...Has anybody here ever considered modifying the cylinder / cylinder head to make it water cooled (may be just as simple as boxing in the cyl jug and head....Do the water cooled dirt bike engines employ a water pump or do they just rely on natural heat convection through the cooling system?

Andrew
 


J

Junkologist

Guest
I think the added weight of the coolant and extra parts would negate any benefits derived from the modification.

Mike
 
G

gauge

Guest
it would be alsome to put a kx 65 cc 2 stroke on a bike with that close ratio 6 speed it would fly. but mounting the radator would get interesting
 
J

just for kicks

Guest
OK, IMO I think we need to look at the pocket bike engines and go from there or even better make a "made-in-U.S.A." kit.

But I think starting with something along these lines is in order.
P.B.U.-10.0 This engine is just perfect.

PocketbikesUnlimited just has some awesome looking engines and I would love to see them run to see what they can do.
 
L

Lowell

Guest
Now that would be a good amount of power for a bike, but how long will a 10+hp motor last?
 
J

just for kicks

Guest
Actually I'm not a big fan of liquid cooling on little engines just because of all the added stuff but that is a nice engine (they have others).

Pocket bikes have a large selection of cranks, pistons, heads, carbs and so on so all we need is a good solid crankcase and a gear reduction setup with a pull start that is out of the way(I can tell how it could be done-(90%pullstart)
 
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A

andyinchville1

Guest
10+ HP on a bicycle?.....Sweeeeet!....I think we would have a Death Race winner!
 
E

Earth Mechanic

Guest
That 10hp motor looks pretty solid. 10 hp would need a multispeed gearbox though.
 
E

Earth Mechanic

Guest
multispeed

im working on gettin a 3 or 4 speed honda moped gearbox onto my gxh50 motor, so if you hit any breakthroughs with your multispeed project let me know.
 
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