mtnmanak
™
- Joined
- May 5, 2020
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To make this easier, I'm going to buy an extra length of airframe tube and build up the interstage as shown here.
I've ended up buying extra bits of coupler and tubing with almost every two-stager I've ever built.
At some point, years ago, I realized it was just going to be advantageous to have extra tubing on-hand for things like this, so I bought a full stick of tubing and a full stick of coupler tubing in every diameter I use frequently in both FG and cardboard (2 sticks of everything in 4" - that size definitely gets the most use). It is a lot cheaper (per inch) to buy the whole stick and shipping it all at once is cheaper overall than buying short pieces over and over again. I just cut off lengths that I need and a stick usually lasts me a couple years for these purposes. It is a bit of an expense up front, but, really, for the cost of maybe a good 3" FG kit, you could set yourself up with all the spare tubing you would need and have it on-hand to experiment with, especially for scratch builds.