Tubing Conundrum

[Kruegon]

Cardboard. Heavy-wall. Spiral wrapped. 8.875" OD x 55" L. As much as you want for free.

If this scenario was put in front of you, what would you do?

 

[chris m]

I would be building a 8.8 inch rocket

 

[michigander]

I would be looking for a nose cone

 

[Kruegon]

I would be building a 8.8 inch rocket

That's where my brain went when I saw it. It'll have to be FG wrapped. The wall is heavy but it's a softer tube.

I would be looking for a nose cone

That's the 50 million dollar question.

 

[Bat-mite]

Look no further. https://www.pythonrocketry.com/

 

[chris m]

Or build your nose cone . Different ways of doing it

 

[chris m]

the shroud pager is great for this

 

[dhbarr]

Or build your nose cone . Different ways of doing it

With infinite free tubing, I'd be measuring up a six-segment cutcone. Another chunk cut down into coupler, make a giant tuber from scrap.

 

[chris m]

You have read,my mind

 

[chris m]

Like a fat walrus like two foot tall

 

[dhbarr]

Like a fat walrus like two foot tall

Sadly I do not have a large supply of mega tubes, but this design keeps popping into my head.

Is there a cutcone calculator out there ( e.g. feed in the OD, desired length, and number of gores )?

 

[chris m]

In that picture there is a paper you can download . I will check for a calculator

 

[chris m]

Do a search here for project paper has a lot

 

[chris m]

Rocket shoppe building tips has a calculator

 

[chris m]

Blocklayer.com has one and can print full size just cut to 1/6 th of the pattern

 

[dhbarr]

Blocklayer.com has one and can print full size just cut to 1/6 th of the pattern

Yeah, I was thinking someone had a tube-to-elliptical cutcone calculator where you finish off with a disc over the star at the top and end up with much lower profile ridges.

Maybe I was misremembering blimp gore.

 

[chris m]

This https://www.google.com/url?sa=t&sou...tUz3oRiWjA-zsXDeQ&sig2=FbZRaaYCCRxeX4qSPyPNZA

 

[RocketFeller]

Look no further. https://www.pythonrocketry.com/

Exactly. Whatever shape you want, made to order.

 

[Kruegon]

Look no further. https://www.pythonrocketry.com/

You're about to get me in trouble, aren't you?

 

[Incongruent]

Sell it. Assuming an unlimited and unchoked supply.

 

[Kruegon]

Sell it. Assuming an unlimited and unchoked supply.

I have considered that. The tubes are not "perfect" but they're pretty great. Biggest issue I've seen is couplers.

My biggest obstacle is transportation from the acquisition site to home. And then there's the idea of shipping it to anyone that isn't local. That'd be an issue.

 

[Incongruent]

I have considered that. The tubes are not "perfect" but they're pretty great. Biggest issue I've seen is couplers.

My biggest obstacle is transportation from the acquisition site to home. And then there's the idea of shipping it to anyone that isn't local. That'd be an issue.

You can make a coupler by slotting part of the tube and joining the ends. John Coker has a tutorial.

 

[cavecentral]

You can make a coupler by slotting part of the tube and joining the ends. John Coker has a tutorial.

Agreed. I do this for all my hand made fiberglass tubes that don't match anything that is for sale. Usually the mandrel I roll the tube on is heavy cardboard or PVC and not suitable for a coupler.