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Date: Fri, 04 Mar 2011 09:09:27 -0500
From: Jim Brewer <alpha@concordnc.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Lynn's BF-109
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Guys,
I tapped into the Wikipedia for info about this WWII aircraft and found 
this very interesting:

 From the inception of the design priority was given to total and easy 
access to the powerplant, fuselage weapons and other systems while the 
aircraft was operational from forward airfields. To this end, the entire 
engine cowling was made up of large, easily removable panels which were 
secured by large toggle latches. A large panel under the wing centre 
section could be removed to gain access to the L-shaped main fuel tank, 
which was sited partly under the cockpit floor and partly behind the 
rear cockpit bulkhead. Other, smaller panels gave easy access to the 
cooling systems and electrical equipment. The engine was held in two 
large, forged, magnesium alloy Y-shaped legs which were cantilevered 
from the main firewall/bulkhead. Each of the legs was secured by two 
quick-release screw fittings on the main firewall. All of the main pipe 
connections were colour-coded and grouped in one place, where possible, 
and the electrical equipment plugged into junction boxes mounted on the 
firewall. The entire powerplant could be removed or replaced as a unit 
in a matter of minutes.[19]

Not to pick on Chris, but if our experimentals were so designed it 
wouldn't be so hard to swap engines or rebuild them.  Cars too.
Just food for thought.  BTW, there was more about quick service to wings 
and other systems.

http://en.wikipedia.org/wiki/Messerschmitt_Bf_109


Jim Brewer