Most people put at least 1 caliber of coupler sticking into each end the body tube, so for a 7.5" diameter rocket that would be a coupler with a total length of 15". The PR fiberglass tubing is very strong and 15" would be adequate IMO. Definitely run your ideas past your L3CC/TAP though.

cdreher

Thanks for the information. I'm a Tripoli member so I will run my ideas past a TAP member at the next launch. Thanks again!

have you contacted a TAP yet? Mark L, Art H and myself are the most active of TAPs here but there still are a couple of others in the area. feel free to shot me an email at jamesr2 at gmail and I can make sure that you have our info for questions and review.

James,

Thanks for responding, I just asked Joe H who the TAPs were the other day. I will send you an email soon, will you be at the December launch?

I have many other questions, but will create a separate post.

Thanks,
Lwade