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Posted by z on January 11, 2008, 4:45 pm
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>> So i'm off to town today to get some more plumbing supplies -- man
>> i'm a little tired of gluing that plastic pipe together. Every time
>> you want to change something you gotta cut and glue and wait. Maybe
>> i'll switch over to black plastic pipe.
>
> How big are your nozzles? The size and length of the tubing feeding
> them may be significantly reducing the pressure available at the
> nozzle. You would probably get more speed and torque at speed if you
> keep the feed much bigger right up to the reducing nozzle. Then you
> could also increase the nozzle diameter for even more increase, water
> supply willing. If you have enough water, even more nozzles could
> help.
The nozzles are 1/4th inch. I can see the potential value of using
larger pipe and reducing down to the nozzle rather than reducing and then
splitting into multiple 3/4th inch pipes.
I think I'll redesign the plumbing to do that better .. and avoid the
hard corners.
Today I might hog out a nozzle and see if it makes that much difference.
These are simple brass and only cost a few bucks each so its no big deal
to modify them.
>
> The wobble may be costing you speed/power also. If you don't have a
> bearing at the bottom of the shaft, that would be very helpful in
> stabilizing it and reducing wear on the alternator bearings.
Yeah. It sure is slick the way it is now, i can pull out the whole unit
in one part. Adding a bearing would force me to attach the unit to the
barrel.. which I might have to do in the end, but if I can shorten the
shaft and get it centered perfectly I might get away without doing it.
>
> Soft copper tubing could also be used for a stiffer nozzle mount. Or,
> use 2 male/female threaded "street elbows" threaded into each other to
> allow adjustment in multiple axis.
> A square of say, 2" PVC around the wheel, with threaded "T"s (1/2" or
> 3/4" or 1" thread)in the center of each side, with the aformentioned
> street L's pointing the nozzles might work well.
Yeah. I think I can see what you are suggesting here.
>
> I sure wish I could be playing with such a project at my home.
Its been fun for sure. Wet and cold but fun!
Thanks for the help !
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