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#1
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Re: Where to get miniature hydraulics? OR...
I know I posted in the pneumatic forum but I am looking for small hydraulics. If such a thing cannot be found, I do know where I can get small pneumatics.
However, I cannot use pneumatics because without some fancy tricks they are very fast and only two position. I need them to be rather slow and infinitely multiple position (like hydraulics). If anyone knows if a pneumatic cylinder can be run with hydraulic oil, please let me know. I was afraid it might eat the seals or something. It is for a steering setup on a 1:6th scale RC truck. Now, I had another idea. Could I use a standard RC car oil filled shock, fill the holes in the shock piston (or make a piston without holes) and drill and tap a couple holes in the shock body for fittings? Or would the hydraulic oil get past the piston too easily and cause problems? (or would it eat the plastic piston?) |
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#2
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Re: Where to get miniature hydraulics? OR...
i have no idea how edible the plastics are to the hydraulic fluid,, but i think rc shocks let out too much between the disk and shock body wall.
how about the lego ones? unless the plastic gets eaten, i think itll be fine with fluids. its fine with water i knwo that much. with air and nonofficial LEGO tubes, it holds air up to 60psi ish.. that i experimented myself... get some TIGHT fitting tubes or find a way to clamp it on... although for an rc truck it might be too fragile.... and slow... unless you widened the stock holes |
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#3
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Re: Where to get miniature hydraulics? OR...
The use of a shock piston would not work, because of the holes present inside the cylinder. While in pneumatics or hydraulics there is a seal between the two chanbers, there are small holes in a shock absorber.
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#4
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Re: Where to get miniature hydraulics? OR...
Quote:
Quote:
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#5
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Re: Where to get miniature hydraulics? OR...
What about using a food-grade medium, like glycerine? That would very likely be safe for the seals in a standard aluminum & stainless piston. Or to be absolutely sure, use it with a food-grade piston, with nylon or delrin end caps and stainless body; those seals have to be especially nonreactive.
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#6
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Re: Where to get miniature hydraulics? OR...
you could always find out what the seal in pneumatics is made of then see if the material is "edible" by the fluid
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