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Member Since 30 Nov 2011
Offline Last Active Jan 07 2012 03:02 PM

Posts I've Made

In Topic: 24mm OD Rocket Tubes?

14 December 2011 - 07:28 PM

I have found a nice chromed steel tube with an OD of 18.9mm, with shrinkage I'd say that's got to be good for an ID of 18.5mm.

I've cut a 1m roll of brown parcel paper in to motor lengths so that the motors are the right length to start with, do I just paint on PVA as I wrap it around?

In Topic: 24mm OD Rocket Tubes?

13 December 2011 - 10:43 PM

Of course I'm doing all this outside.. I've been around the block a bit and have been dabbling in this hobby since the mid to late 80's when I was 12 and had a home office visit! :) obviously I've been a little more careful since then.

In Topic: 24mm OD Rocket Tubes?

13 December 2011 - 10:41 PM

Thanks for the tips, safer but not safe by any means, electric hob a non-stick pan and a wooden spatula..

Just to update, I've cooked up a mix and it burns really nicely, next I will test it in a spent motor tube as it already has a nozzle and is pretty well made to start with.

Launch on Saturday so I'll try a refill then, results are very good so far.

In Topic: 24mm OD Rocket Tubes?

12 December 2011 - 09:21 AM

I've designed a block with holes and some nozzle moulds, also the compacting thingy which has a divergence angle for the inside of the nozzle. A local firm is going to knock them up in stainless steel.

In Topic: 24mm OD Rocket Tubes?

08 December 2011 - 11:26 PM

Hi Sparky,

Yes that is what I am doing with the rocket motors, casting seemed like the best way to do it. It's safe and you get a nice steady burn.