Co2 Cartridges

[wheeltapperParticipant @wheeltapper]

Posted by Bazyle on 15/01/2013 23:35:44:

I assume they are pretty strong so how about minirollers for moving machines.

Meanwhile I keep wondering about a use for plastic milk bottle tops. (Bottle part cut off is a handy container)

I discovered that they are a good fit on the eyepieces of my binoculars,

Roy

[Jeff DaymanParticipant @jeffdayman43397]

Further thoughts inspired by Axel's excellent ladle suggestion above:

On steel cyls that are empty, the necked end could be cut off, the cylinder cut in half lengthwise, and a wire handle welded on to make a nice firing shovel for small models with a round or oval firedoor. The hemisphere shape of the back end might be easier to get back out the door opening if it went in too far and dropped. The flat backed ones can be a pain to get back out. Front corners can be radiused to suit.

Just food for thought.

JD

[Bob LambParticipant @boblamb44747]

Bazyle asked earlier fo a use for plastic milk bottle tops. I was just about to throw one away – not sure if the tops are re-cyclable here- when I thought they would be ideal for mixing small quantities of flux with water. I usually use a yoghurt pot or similar and always end up making too much – hopefully this will result in less waste in the future – Bob

[Sub MandrelParticipant @submandrel]

I would guess the cylinders are made of aluminium

All the small cylinders I have used are steel.

I have both

Neil

[thomas oliver 2Participant @thomasoliver2]

Surely these are still used to operate small CO2 engines for indoor model aircraft like the Gasparin, Telco etc. These motors are provided with a clip-in mounting for these cartridges. Offer them on the BMFA website. You might get a bob or two for them. TomOl.

[nigel jones 5Participant @nigeljones5]

Why not paint little faces on them and stand them in your workshop to scare away all the goblins and pixies that come in the night and move/steal your tools?

[Speedy Builder5Participant @speedybuilder5]

I have some plans for a model gas turbine which uses empty CO2 cartridges as the ignition chambers. Each has a glow plug in them and the motor revs at around 30,000 revs. Never got round to it because of the problems in making the compressor and turbine rotors.

Bob

[M0BNDParticipant @m0bnd]

I can acquire a few from my gun club if any body needs some? In the weymouth area!!!!

[Ian S CParticipant @iansc]

Bob, one of the earlier gas turbine models, made by a German chap ( ??Schekling), had a centrifugal impeller made of plywood, I think I would try recycling the innards of an old automotive turbo charger.

Ian S C

[thomas oliver 2Participant @thomasoliver2]

The wooden impellor worked since it was in a flow of cool air, and was a lot easier to make than milling from a solid piece of tough metal. Turbo charger impellors from cars were widely used later, the particular one which was popular was from a Porche engine. Bearings were one big problem at the speeds and the temperature involved. The use of ceramic bearings was the big break through. TomOl

[Joseph RamonParticipant @josephramon28170]

The gasparin adapters use the smaller sparklet sioze, not airgun size.

Joey

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