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on the old rw forum someone was talking about a gas boost for a spinning disk, i no that it works in the same way as do those toy helicopters that you pump up to make the blade rotate but i was wondering how you use the compressed gas (or compressed air)to make a rotary movement.
thanks,
daniel
sorry if this was a little hard to read what i mean to ask is how can you use phnumatics to give a rotary output, eg. co2 turning a wheel.
Using a pneumatic motor of cource.
Handy spot to find them, airtools like drils, anglegrinders etc. If Torque is more important, I would suggest looking in the torquewrenches.
Other tricks that I contemplated, a Terrorhurtz style rack and pinion, combined with a single direction gear(like the backwheel gear on a bicycle)
Or even building along a turbine idea, and using the inner rim of the disk with vanes to get extra push, this idea went into the drain due the enginering difficulties.
It would be technically possible to power a disc or drive using compressed gas but Im not sure its terribly practicle. You would need pretty large gas supplies to store enough gas to power the disc or drive for very long.
I believe the thread on the old forum was talking about using gas as a boost to get an electric motor upto speed faster so as to accelerate disks faster. By forcing gas through the cooling fan of the motor using it as a turbine. This to may be possible but if you look at the fan on a bidirectional motor they tend to just be some plates radiating straight out from the centre this would make a pretty poor turbine. So the efficiency of any such system would be extremely low.
If any body has any ideas on how to quickly accelerate discs over than extremely expensive motors Id be extremely intrested.
Richard Wenman
Team Mayhem
Want the ultimate, rather cheap diskmotor, Go ICE.
Internal Combustion Engine.
There are 2 for sale around here.
1 22 hp Suzuki RM125 cc, already lightened and RWd.
1 32 hp Suzuki RM250 cc, also with empied gearbox and stuff, This one was plan C for Tough As Nails, but we never came to it,as the cost for the hydraudrics was to high for our meager means.
Both motors are in parts, so the future owner can learn what he has.
The 125 cc is going for £80
The 250, any offer will be looked into.
Hehe, it would be nice to see those motors in Typhoon...
Mario how much does the 125cc weigh?.
It would be nice to use for a featherweight:)
dafter things have been tried (and sometimes done!)
For the 125 cc, mail Tom, at Codemaster003@hotmail.com
But for a feather.. the motor on its own is about 10 kg...But in place of an Etec....
that would do but i needed 2 the same though
does anyone have a site address that sells these motors?
p.s richard is you read the name of this topic youll find that i wanted them for gas boost anyway!
right anyway here are my requirements for the motors:
1.they have to be able to be run by co2 compressed from about 850 to 1000psi
2.they must have around about the same speed and tourge as a bosch motor (like as sold on technobots.co.uk).
the weight of these motors is NOT a problem!!!
please note that, excluding the pressure requirements, these requirements are minimal if anyonw noes a site that sell motors that are better that this then that accually better!!!
P.S. Sorry for the long line of messages!!!
A Dutch roboteer did calculate the gasuse, in the most positive approach you could run a good disk with 12 kg of CO2.
Advantage, when using the most torque-stating up, they use the least amount of gas,in stall you use no gas at all, but on full speed the gasuse is astronomicaly.
And motors capable to run on unregulated CO2 pressure... dont even search for them, youre looking into gas turbines then.. things running on fuel, pricetag over £2000 very high RPM and about no torque.
Normal airtools run up to 10 bar, maybe 16 bar for a very rare range of tools.
Just a thought...could you paralell two air motors in some efficient way?
Use one massive for starting the disk, and one high speed one with low air use (and obviosly lower torque). You hardly need any torque to keep it spinning, do you? (assuming decent bearings)
Yes, you could paralell two air motors. But you would either need some sort of valve to direct the airflow, or they both would be on at all time.
But theres one thing which I think most people have missed, I dont think Daniels after air motors to run his disc continously, but motors that will help him boost the speed just before impact.
When it comes to motors, he must be better of with a pair of motors from some air tools, and a regulator?
does anyone have the name of a site that sells old or new air tools then?
or maby a site that spesilises in these motors?