Paul:

Thanks for adding me to the mail list.

I like the way you have solved the problem with the water pump castimg.

I want to add a small holding tank with the radiator cap on the tank.
Problem is that the tank top will be abiut 1" below the top of the water
jacket.

Will keep you informed of my progress if you are interested.

Hank

A holding tank is OK but I think it is not necessary. An overflow tank
however is essential. The antifreeze solution expands when it gets
hot and the pressure rises above the cap pressure. The pressure relief
valve in the cap opens up. The solution needs a place to go so it goes
into the overflow tank. When the engine cools off and the fluid in the
engine contracts there is another valve in the cap that opens up and
the engine sucks all the solution back out of the overflow tank and
back into the engine.

The overflow tank can be almost any height in the cowling. There is no
pressure in it so it can be lightly made. The cap of course must be
kept in working order. Sophisticated little bugger for being so
cheap.

We are always interested in what people are doing with rotaries.

If you need more pictures on a step by step on how to modify the pump
let me know.

Paul Lamar

So this brings up the question of what to use for an overflow tank. I bought
one of those $5
plastic jobs but then had second thoughts. In case of an engine fire that
could really get to burning
and then let loose a quart of antifreeze to burn. I recall somebody had used
a Morroso aluminum
tank that looked way cool but I have not been able to find one. Anybody got
any other ideas?
Lonnie

About a one gallon solvent or paint thinner can. Not fancy but probably functional.

Paul Lamar

bill martin wrote:

Lonwood:
     Just to add another thought I used a tempered glass jar and metal lid for my
overflow and I also used a paint spray gun can cut off at the top and an aluminum top
heli arced in for both the swirl tank and the tank with the rad. cap installed which
feeds the overflow bottle.The overflow tank was close enough to the exhaust to worry me
about radiant heat melting a plastic bottle.You guys in the states are using anti
freeze where I chose to use soluable oil as a lubricant for the system.I have run a
four minute 85% power run on my engine on the ground with no heating problems
on my p-51 system.Incidently,I am the one who welded a water tank over the oil pan for
oil cooling with a small 7x7 oil cooler to help and so far my highest oil temp has been
190 degrees.
  I am still trying to register my plane here in Mexico under a new system for
experimental craft and it ain't easy.Everybody I have been in contact with in the
c.a.a. has been extremely nice and helpfull and hopefully I am almost done.
                                                         Bill Martin

 
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