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My next project will be a belly tank racer. I will vacuform the body using model board for the plug. I turned  each station to P38 aircraft specs with a .149 hole running down the middle of each one then cut each station 1/2” in thickness resulting in 13 “doughnuts”. Then, I cut them in half and will glue them together to layout on a platen that will have a .149 half rod down the middle for alignment. The photo shows the stations put together laying on an alignment rod unglued and unsanded at this time. I will do the same with the other stations to make two identical halves. I’ll keep updating as I go along whenever my honey loosens the leash.

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Edited by Rick L
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 I’ve built models and prototypes professionally for 40 years and couldn’t really build for pleasure during those years until I retired. I don’t have much of a junk yard at this point so maybe we could make some trades.

 

 

 

 

 

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3 hours ago, Rick L said:

 I’ve built models and prototypes professionally for 40 years and couldn’t really build for pleasure during those years until I retired. I don’t have much of a junk yard at this point so maybe we could make some trades.

 

 

 

 

 

What engine do you have in mind?

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  • 1 month later...

Moving right along, I finished my master and made silicone rubber molds to cast solid vacuum form plugs. I formed the halves with .062 thick polystyrene. I will attach a .03 flange all around the top half with MEK and pass them around to friends. The last photo shows a converted master top for my personal use. I’m planning on casting this with a clear .062 PETG sheet in order to mask off the canopy and paint the rest. This will look similar to the 2013 GM belly tank. 

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This is looking GREAT!  I’d definitely be interested in purchasing a copy of one of these if you were ever to consider forming any extras!

Great work!

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  • 2 weeks later...

Interesting stuff to me.

This is me in the Kelly & Hall belly tank a few years ago at El Mirage Dry Lake, a few miles from my house.

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The 1st race car I ever sat in was Tom Beatty's in the 1950s when I was about 2 years old. This photo was taken by my dad.

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Tom and Fat Eddy at El Mirage. 1st car to break 200mph at El Mirage. Was done using a wrecking yard Olds Rocket engine. He had previously used a Ford flat head that he was the 1st to break 180mph there.

And you were correct to model your belly tank body using a P38 drop tank. That's what Tom's car used for a body. Tom lived 1/4 mile across the rail road tracks from Lockheed Burbank, where P38s were built. Note that the belly of his car does not have a flat spot.

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