Originally Posted by
iron eagel
Cool and I forgot you still have the rear exhaust thing to deal with.
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Yes, I have to have enough area for the exhaust and cooling air. The exhaust duct inset into the fuselage is a an old piece of paper-phenolic rocket body tube I had lying around from competition days (rocket guys remember CMR, 1970's? This is their phenolic mini engine size tube, now it is used as a slime duct.). You can sort of see it under the bottom plate.