Paul,
What is the preferred  design for a cabin heater using the
rotary?  Do  you
use the oil or the water?  What about an oil to  water
cooler using an
external water  circuit?  I am building a
pusher.  Thanks for any  help.

Joe Berki
Limo EZ

Perry Mick uses an oil cooler under the cockpit
on his  Long as I recall.


Paul Lamar

Joe,

The highest temps are from the exhaust.  A  water
exchanger will require a
heater core, a  fan, lots of coolant hose, and a gallon or
two of H2O. If  it
springs a leak, you could be faced with scalding hot  water
being sprayed on
your legs/feet, and at  minimum, a fogged up
windscreen.  Bottom line...  an
exhaust heat muff provides the most heat for the  least
weight penalty.  If
you do go that  route, spring for a CO detector.

Mark  S.

I personally would prefer a little fog to a  lethal
dose of carbon monoxide.  Coolant heat exchangers  have
been used since the early part of the 20th century  and
failures are rare.  Failures are generally the  result
of sloppy maintenance, ie not periodically changing  and
flushing the cooling system and not replacing  hoses.

Coolant heaters have always been a useful tool  to
help dissipate  high coolant temperatures.

Joel

I have a water heater with 2 ball valves in the cockpit to  isolate it
completely in case of a leak.  I actually use one of  the valves to control
temp. in the cockpit.  It works just  fine.

Rino Lacombe
Renesis powered Glass  Goosse
http://www.youtube.com/watch?v=dAosiOhvwa8&feature=related

Rino  should know. He lives in the great white north :)
The key to cooling  reliability is AN plumbing and fresh antifreeze on
a regular  basis.


Paul Lamar


Lessee, your water will be hotter than the oil. Your water will transfer
it's heat to the core more efficiently than will oil.

Doesn't it make you wonder why virtually every auto maker uses water
instead of oil for heat, when both are available.

Heater muffs are used in aircraft because they work (most of the time,
unless they leak) and are easy and cheap. When you get into the larger
aircraft,  such as twins, they use their own combustion heaters, because they are
better.  (except for the Seneca 1 that used muff heaters-- somewhat lousy
changed to  combustion in later models

Rich