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Jennifer Clark wrote:
>
> c s soh wrote:
>
> > I don't know how or why but I don't seem to have come across it. I guess
> > I could try to build one but it'll help if you could give me a link or
> > reference to it.
>
> Sure - I made a rather ugly version of it including limit switch for my skid
> steer loader model. There is a picture here; I don't actually think many
> modifications other than replacing the small and large pully with 8 and 40 tooth
> gears were needed. I still see this compressor section as Michaels's effort
> since the modification is fairly obvious;
>
> http://www.telepresence.strath.ac.uk/jen/lego/ls160_lrg/ls160_compressor_pic1.htm
>
> http://www.telepresence.strath.ac.uk/jen/lego/ls160_lrg/ls160_compressor_pic2.htm
>
> I added an extra 9V motor for the excavator model to provide increased airflow,
> although I suppose that is cheating ;-) anyway, the picture is near the bottom
> of the page:
>
> http://www.telepresence.strath.ac.uk/jen/lego/excavator.htm
>
> I also have a hand controller with built in limit switch, although it is really
> the same as Ralph Hempel's design spread flat and using the full pump stroke:
>
> http://www.telepresence.strath.ac.uk/jen/lego/ideas.htm
Thanks, Jen. I'll have a go at it.
> > But really, with this pressure sensor
> > thing, limit switches would soon be obsolete.
>
> True enough! But some of us Luddites don't even have an RCX :-)
>
> The pressure limit switch is also a lot cheaper and more compact to include in
> models than the RCX.
Well, I was just thinking to what extent you could take the pressure
sensor device.
Actually, most of my own creations don't use the RCX. And they're mostly
powered by the manually operated hand pump.
--
C S Soh
CSSoh's Lego Pneumatics
http://www.geocities.com/cssoh1
... where air is power!
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