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Old 13th January 2009, 23:51
Graham Boak Graham Boak is offline
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Re: Spitfire out/in let question

The guns were heated by air drawn from the starboard radiator. This gave some problems with the supply to the port guns not keeping hot enough, so a pipe was added into the exhaust flow - this can be seen aft of the last exhaust.

If later aircraft had electric heating that would explain the removal of these vents.
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