Well, here it is, completed.  Weight finished is exactly 5.75 ounces.  I'll fly it tomorrow.  More later!

As you can see, I have a 2nd tank inside the fuselage that feeds into the engine's own tank.   I expect I will be able to use the capacity of both to get a long enough run for the classic pattern.   

I think I should be able to pull the plug off the engine vent and fill both tanks at one time.

Sad to say, I am not taking it to VSC.   I am not yet getting a consistent engine run from the two tanksl  I think there is a blockage transferring from the rear tank to the front.  Until that is resolved, no risk to the plane! I think that I have the rear tank clear, but there is a leak in the front tank, and blockage in the overflow vent that is making the situation worse.  More news at 11!

Hi'ya Doc!  Nice seeing you at VSC.  Sorry about the Humbug, I hope you are going to fix it?  Give your pooch a pat for me (and I am not a "dog" person).  Also thanks for sharing your shade.  Any word about John Standing Bear?

Anyway, I have a couple of suspects in my engine woes with this plane, and need to replace the bottom vent tube in the engine's tank.  The original one had been bent, and thus constricted, plus it has a air-leak at the tank interface.  Hopefully, I will get to fix that this week and report on my progress.  At worst, I will throw an RR-1 on the plane, forget about the 2nd tank and fly it for fun.