If your rotary is over heating on take off and you
   need to get back on the ground right
   now consider using one of these small high pressure
   pumps to spray water on the rad.


   For the time to climb air plane
   I bought two. One for the rad spray
   bar and one for water injection into
   the intake manifold.

   Easier than just using one and a selector valve.

   Paul Lamar


Of course if your overheat blows out all of your water, all the spraying
won't help. The sprayers will work wonders in a pusher if held on the
ground for a long time with the engine running and little air going
through the heat exchanger

Rich Goldman


Your supposed to check the temp every few seconds when taking off :-)

Paul Lamar

The internal cooling from water injection will be more effective than spray
to the rad as it drops internal temps without hurting power. Side benefit is
steam cleaning the combustion chamber.  Water injected engines are
noticeably cleaner inside.

Murry Rozansky



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