BBB 2016 summer meet up

[oakwoodtv]

i have  about 6 foot of 150mm yellow gas pipe if thats any good.

Yes please bring it along we now have to find 6" projectiles I mean balls.

[Head Womble]

I may be able to get some tennis ball size steel pipe.

I'm thinking an expansion chamber (box) at the base will give the bag room to, er, expand, and force the air up the pipe.
Now what sort of volume will the chamber need to be ?
And no, the pipe will not be Womble size.

[oakwoodtv]

I may be able to get some tennis ball size steel pipe.

I'm thinking an expansion chamber (box) at the base will give the bag room to, er, expand, and force the air up the pipe.
Now what sort of volume will the chamber need to be ?
And no, the pipe will not be Womble size.

If we cut the bag of the chamber need only be big enough to take the unit.

[Head Womble]

I may be able to get some tennis ball size steel pipe.

I'm thinking an expansion chamber (box) at the base will give the bag room to, er, expand, and force the air up the pipe.
Now what sort of volume will the chamber need to be ?
And no, the pipe will not be Womble size.

If we cut the bag of the chamber need only be big enough to take the unit.

Good point, so some plastic pipe, a Roses tin and some gaffa tape is all we need.

[oakwoodtv]

I may be able to get some tennis ball size steel pipe.

I'm thinking an expansion chamber (box) at the base will give the bag room to, er, expand, and force the air up the pipe.
Now what sort of volume will the chamber need to be ?
And no, the pipe will not be Womble size.

If we cut the bag of the chamber need only be big enough to take the unit.

Good point, so some plastic pipe, a Roses tin and some gaffa tape is all we need.

How about this one https://www.youtube.com/watch?v=5tM9DjfX0l4

[Head Womble]

I like the added fuel

[oakwoodtv]

Have measured the charges from three makes and a chamber of 5" x 5" x 2.5" is required.

 

[GedsJeep]

wouldnt this be easier?

http://www.guns.gb.com/contents/en-uk/d384_Hodgden_reloading_powder.html

[oakwoodtv]

wouldnt this be easier?

http://www.guns.gb.com/contents/en-uk/d384_Hodgden_reloading_powder.html

Me thinks there may be a problem with the import.

[GedsJeep]

they are based in wigan......

and you can get bigger tubs

[Tony]

http://www.ebay.co.uk/itm/1kg-Calcium-Carbide-caving-gas-lamp-acetylene-production-/172157771246

Just sayin'.

[oakwoodtv]

Yes they will both work but you are not keeping to one of the main rules.

You have to buy gun powder and carbide the air bags are free.

[Jamesrl]

If you want to go down the acetylene route I've got a small oxy/acet set, now a nice neutral mix give a very serious bang, a couple of litres would prolly launch a tennis ball into orbit.

Soooooo how about a Gerald Bull Cannon!

[oakwoodtv]

He did not help Forge Masters mutch.

[Jamesrl]

He did not help Forge Masters mutch.

It wasn't Bull but the slimy blubberment trying to keep things secret, Forge Masters were only making water pipes.