Featherweight advice

[typhoon_driver]

As far as I'm aware there are no featherweights that use this method anymore (at least there weren't at the last 3 champs). Yet another very old school method

The best way to build a low pressure system is to use a standard high pressure container attached to a regulator. I believe trevor regulators are the standard these days although I'm sure one of the pneumatics guys can fill in this detail.

For fittings, http://www.technobotsonline.com/pneumat ... -fits.html

[billy breach]

HAHAHA looks like mine will be something from WW1 then hahahah. Thanks For the replies and the link to the technobots site, will have a look through the products and see whats available.

[terry]

If you want to see a pic of a dry powder bottle with adaptor to 10mm push fit pipe there is some on my robot website.

www.toxicrobot.co.uk

its in the toxic1 tab, there is a good pic.

[maddox10]

I was thinking of using a low pressure system, not a full pressure system. That way I can build and buy parts.

I was thinking of using a car compresser for blowing up tyres (the heavy duty type for blowing up 4x4's etc)

Basic formula. Flow*pressure/500= Kw needed. A car-compressor has following limitations. 12V 30A =car fuse on the sigaret lighter. This means at best 360Watts to the motor.
The cheap build robs 35%, and that will translate in pure heat. Leaving 260W peak for the compressor.

Max pressure for commercial-and easely available pneumatic parts 8 bar.
So 8*X/500=0.2 Kw
X= 0.2*500/8= 12.5L minute.
This means a 1 liter buffertank needs 38 seconds to get filled @8 bar.
In effect everybody that used the car-compressor idea in the past tried to get with a full buffer in the arena, and after the first shot, the compressor kept on draining the batteries.

and a buffer tank maybe a dry powder fire extinguisher or tubes rolled up to great a buffer tank. Does anyone know or if anyone still does this method?

A powder extinguisher as low pressure buffertank is seen more in the low pressure users, but those are rare, and most use other storage vessels as the car-extinguishers are rather big for a feather.

and any idea who can make a T- joint type of fitting that will thread onto my lower pressure buffer tank (dry powder fire extting?) onto a standard 10mm low pressure (10 bar I think) tube?

Yes. PM me.

[billy breach]

thanks. PM'd