pdf dwg attached should give you what you need. I used it to build my T3 Micro downscale recently.
Why do I always feel like I am copying qquake????? Great minds think alike, but he is always one or 2 steps ahead of me....
Go with the 4" rocket. It will go well with your other 4" birds.
Wait. How big did you go on your EAC Viper? Go that size.
Oh good, I was just thinking I would build one original size, but use LOC tubing instead of BT-80. 'Course 3" isn't much bigger......
BTW ... I built a Shadow clone from Aerotech parts. They have a 2.6" diameter body tube that is a bit stronger than a BT-80 tube. I cut fins from thin plywood and attached them "through the wall" (well, just the lower fins). The rocket flies great on F and G motors.
Please don't look too closely at the fins.
-- Roger
3.1" LOC tubes would make it 56.5" long. That's almost 10" longer than stock. I'd say that's considerable.
Aw man - looks like I came late to the party again
Anyway, I brought a party gift for the OP and anyone else that might need it.
An excellent tool for the "clone" builders reference library > the "Estes Body Tube/Kit Reference". This has the dimensions for the Optima kit and most other Estes kits.
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