3 replies to this topic

[captainuk]

I see all of you on here use paper tubes for rockets i am new to this and was given 6ft of 15mm pvc tube so cut it to 3" and made a rocket and it went well about 6 to 800 feet but after joining this forum no one has said they use it so i feel like i have egg on my face and no one told me
is there a reason not to use it ...thanks by te way have made some paper tubes as well

[pyromaniac303]

PVC pipe isnt used, as it can fragment if the rocket fails. The PVC shrapnel can be quite sharp and travel long distances, so I would avoid using it again. If you must use plastic, HDPE is much safer as it tends to deform and bulge rather than shatter.

You can still use it as a launching tube though, to hold rockets upright when firing.

[Mortartube]

I use plastic electrical conduit from B&Q. BUT the motors have been tested a LOT of times and never Catod. Even so they always have a VERY long fuse and are fired at a great distance.

One handy thing with this pipe is that the 35mm film cans with the edges that are flush with the edge, have a dimple in the middle of the lid. This almost clips into the end of the tube and a little glue holds it in place to contain the heading. A little match glued into a hole through the middle of the lid is all that is needed fuse wise.

If you do use this pipe I will say again. You need a LONG fuse and a large area to fire them just in case. I cut the tubes 50mm long to make endburners. You get a lot of cases for just over £2.00 cost.

I realise that this doesn't hold with everyones ideas but I do observe the precautions listed and I have never been able to get a static spark from it either no matter how I have tried.

Edited by Mortartube, 16 May 2009 - 05:47 PM.

[captainuk]

I use plastic electrical conduit from B&Q. BUT the motors have been tested a LOT of times and never Catod. Even so they always have a VERY long fuse and are fired at a great distance.

One handy thing with this pipe is that the 35mm film cans with the edges that are flush with the edge, have a dimple in the middle of the lid. This almost clips into the end of the tube and a little glue holds it in place to contain the heading. A little match glued into a hole through the middle of the lid is all that is needed fuse wise.

If you do use this pipe I will say again. You need a LONG fuse and a large area to fire them just in case. I cut the tubes 50mm long to make endburners. You get a lot of cases for just over £2.00 cost.

I realise that this doesn't hold with everyones ideas but I do observe the precautions listed and I have never been able to get a static spark from it either no matter how I have tried.

Thanks for that i knew there must be a reason but i was pleased with the ones i done so when i use it i will go down the field and try paper in the garden thanks for not saying i am stupid