MPC Lambda Payloader Build, Part 4, Fin Sanding & Standoff

The instruction drawings were a bit rough, some illustrations hard to understand.

You are instructed to cut two strips of scrap balsa and glue them together to make a launch lug standoff. You need the standoff for the launch rod to clear the larger diameter payload section.

Here's the two stacked strips of balsa cut a little longer than the launch lug. 

I prefer to cut things long, then sand them to the correct length after the glue dries.

The leading edges were rounded.

One coat of CWF and sanding.

Then one fairly thick spray of filler/primer and sanding.

On the lower right is the launch lug and the standoff now at the correct length.

MPC tube diameters are sized to millimeters. This is a "minimum diameter" heavier than normal wall tube at 20 mm outside diameter.

It's a very clean tube, spiral seams are almost non existent.

TRIVIA: At the time, Metric tubes were only found in MPC kits. You now find metric tubes in Quest parts and kits.

The engine mount is a slightly smaller sleeve tube for a closer fit around the standard 18mm motor diameter.