Discussion > spools??
What are their dimensions?

Well, since this is a forum, I assume that thread-jacking is permitted, so let me be the first to thread-jack a thread.
Doug: I have your rail and will bring it to the launch whenever we get back to the field. One Rule - You (or your students) have to convert the packaging to an I-motor rocket! Of course, you can add fins, nosecone etc, as it is just a tube, but . . .and here's the catch. . .if you do it at the launch and fly it successfully that day, the rail will be donated for free, no strings attached. I will be glad to post the specs if you will undertake the challenge. If not, I'm willing to deliver the rail anyway, but my shipping fees are terrible!!!! (j/k about the last part, but I wanted to sound ominous).
Sandy (the rail hog) H.

So we make the spool such that it attaches to the rail or a launch rod, make the spool into a rocket that day, fly it successfully on an I motor, we get the rail for free......in the immortal words of MTV Celibrity Death Match, "Let's Get It ON!"

Hmmm. Close but not quite. I was thinking you take the cardboard tube the rail came in, make and fly it on an I and get the rail for free. Its a decent tube (around 3" +/- and over 8ft lg). Maybe a little more challenging than a spool conversion, but with a little prep ahead of time (make the MMT, cut the fins and make a nosecone) it could be done in a hour or so.
Interested???
Sandy.

Tube spec's:
OD: 3.35" approx
ID: 3.025" approx
Length: 100" (assuming the ends get cut off a little to clean-up from shipping)
Weight: 4# 8 5/8 oz at 106" in length.
I am willing to pre-slot the tube if I get the specs prior to Friday @ 5:00 pm. I might be able to get a nosecone together if it can be a little heavy (say, 12 + oz for an approx 4:1 or 5:1 ogive, just guessing). I'd even be willing to cut a couple of centering rings if you commit to a motor diameter by noon Weds. I've got tubular nylon, tube for 38mm or 54mm MMTs, rail buttons, expanding foam. . . sounds like a good build.
It occurs that this 'thing' would still be a 'kit' in that I could pre-make some parts ahead of time and if a student assembled it, that would make a valid L1 attempt. . . .Hmmmmmm. . . .anyone in your class looking for L1?!?!?! I'm not willing to buy the I motor, but you can also fly one of my cameras. . . .
Sandy.
PS: [smack mode off] If this would detract from the class curriculum and/or test flights for USLI, don't even consider it. Its pretty much a 'hey, can you do this' challenge and isn't worth distracting from a real project. [smack mode nominal]
PS^2: Keith asked a valid - non-thread-jacking question above in post #2 and you didn't answer. I guess I'm a bad thread-jacker since I posted that. . . .

I picked up a couple of the spools and plan to make them into viable spool rockets. The trick is that the large center cardboard tube is going to be discarded and replaced with three thin tubes over the threaded rods. The idea being to trim the excess weight.

I was able to get some spools from a construction site this past week. Anyone want them??
Just give a donation of your choice to the club and you got one. Hope that's kosher.