Full-length paper coupler tubes??

yeah, I kept thinking, "gee, wouldn't it be nice to live over there!"

- iz ">

R.I.P. Was about this time in 2001, no?

Joel. phx

The phenolic is relatively waterproof, so you can't easily make it get soggy to make it easier to remove when the time comes to "sacrifice" it.

-dave w

not when there is a 8.5 pound bowling ball on top of it ;-)

Paper tubes can be peeled or water soaked to remove them. Doesn't work too well with either phenolic or Quantum tube...

Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD" >>> To reply, remove the TRABoD!

IF you have an extraction method. The paper tube method involves dissolving the tube to remove the mandrel thus leaving a cylindrical case without draft.

Jerry

Hi Jerry,

Thanks for the reply.

My priority would be as follows:

I can work with either size for the coupler. You are correct in your assumption that I am looking at minimum diameter airframe building primarily. My own preference is that the coupler tube would be motor mount size for that reason. However, one of the other goals is to be able to either buy or duplicate of the shelf nose cones. Adjusting to the small differences in size is no problem. I've been doing that already for some rockets that I reinforce internally with carbon fiber.

Len B

I agree. I got the video set last year for Christmas and I find them very useful. I'm in the process of building the curing oven now. A friend of mine built a Shock Value kit and that is a beauty. Since they aren't being made, I want to build something similar myself.

Len B

I thought that might be the reason. :-) Thanks for the replies.

-- Joe Michel NAR 82797 L1

So say a matching mandrel tube and a cast nose cone set would be a "feature"?

Perhaps. One of the things I wanted to "play with" (at least in 54mm) is to try a few different nose cone shapes. Having a common shape as part of the "set" would eliminate one of the shapes I would have to make. I'm worried a bit that the custom nature of this exercise may make this undesirable. Anyway, sure, that would be a feature.

Thanks,

Len B