The dowels and launch lugs (shown above) were cut too short. The build will show the longer and correct 1 1/4" long lugs and dowel pieces. Mistakes can happen when lengths aren't listed in the instructions. I took a guess by simply looking at the instruction drawings.
You might assume a BT-5 is 1/2" diameter and the BT-50 at 1" diameter. That would mean a simple 2x upscale. But, the BT-5 is actually .541" diameter and the BT-50 is .976" diameter - Not a 2x upscale.
I'll be building a original BT-5 version and after that an upscale BT-50 version.
To see Jay Goemmer's "Downscale Chart: CLICK HERE
While Jay's chart says to multiply by 1.79, I'll be using a heavy walled (and slightly wider diameter) BT-50H tube.
Here's my conversion chart. Every dimension of the BT-5 parts was multiplied by a factor of 1.8 to get at the BT-50H sizes.
I drew up decals for both the BT-5 and BT-50 version.
The rounded corner "door" rectangle will be fixed with a narrower line.
Gotta' love a model where the parts fit into a 3" x 5" zip bag.
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