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How to pick out the right valves?

Discussion in 'Pneumatic equipment - outdated' started by yobuddy, Mar 8, 2007.

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  1. egoexpress

    egoexpress Active Member

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    Ah, wait!

    Arent the 1/4 the bigger ones?

    1/4 = 0,25
    1/8 = 0,125

    BTW: Do you want to build a RnR like design or a Platform? For RnRs and in the same size 1/8, like Illi uses them, should do the job.

    Perhaps for platforms the 1/4 ones should be better. I cant tell it to you for sure, because I never worked with air-valves.
    egoexpress, Mar 26, 2007
    #21
  2. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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    Yes, 1/4 are bigger, same size as the air piston connections.

    I’m going to try to build a homemade R'n'R frame. No sense in re-inventing the wheel :wink:

    I would like to leave myself some room if I decided to add another two cylinders later, so I would have 2 for roll, and 2 for heave. If I decided it needs more strength and I have an adequate volume of air to run it.

    It would seem to me that going with 1/4 would make more sense since the air pistons are 1/4 connections also.

    I believe that both valves produce the same volume of air anyway, so it really does not matter I suppose.

    Thanks!
    yobuddy, Mar 27, 2007
    #22
  3. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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    egoexpress, do you think i should go with 1/8 or 1/4?

    mabye you could ask illi for me
    yobuddy, Apr 3, 2007
    #23
  4. egoexpress

    egoexpress Active Member

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    I think you should use the 1/8 ones with 1/8 air hoses and an 1/4--1/8 adapter at the cylinders side. Because it is tested and works.
    Buy the 1/8 ones. If you want to build a bigger sim some day, then you could sell them in ebay.

    But if you have doubts, ask illi by yourself

    regards
    egoexpress, Apr 4, 2007
    #24
  5. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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    Sorry ego, I just thought you may post the question in German to illi, as I have come to realize babblefish is very limited in the translations. I believe that is why I miss a lot of info that may be ready available.

    Anyway, that’s a lot for all your help bro!
    I'll try posting the question in english.
    yobuddy, Apr 4, 2007
    #25
  6. egoexpress

    egoexpress Active Member

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    Ok, Ok, I asked him.

    He mentioned that 1/8 is more than enough for RnR and even oversized for frex-like designs. But if you could get better sleep with the 1/4 ones, buy them. But use Connections for a 6mm air hose. You will have to use chokes anyway.

    The 1/8 have a airflow of 600L/min. How much airflow does your compressor provide?


    regards
    egoexpress, Apr 5, 2007
    #26
  7. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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    Thanks allot ego, I do appreciate it!

    I'd say about 170L/min

    By my math at 222L/min the 2 cylinders (304.8 mm x 50.8 mm) (12 inch x 2 inch) would be able to extend and retract 180 times a Minute. Way more than is needed I believe.

    But since both the valves have the exact same flow data in the spec sheet, I’m wondering if it would make any difference anyway? The only difference in the valves is the connector.

    Thanks!
    yobuddy, Apr 5, 2007
    #27
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