Stray drops

Forums General Questions and Comments Stray drops

  • This topic has 6 replies, 1 voice, and was last updated 11 months ago by ed.
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    • #4578 Reply
      Ed
      Guest

      I have built the controller and it is working very well. I do have a problem, however
      I cannot seem to get a clean drop without small drops following on. I have tried various scenarios
      Plain water, thickened water, milk
      Various heights of the solenoid
      Various heights from reservoir to solenoid
      Various drop sizes (10s to 40s)
      All combinations give the same problem
      I have come to the conclusion it is the solenoids not cosing fast enough.
      I am using cheap ($6.00) solenoids from ebay.
      If I am sure it is the solenoids I will buy better ones.
      Any siggestions
      Ed

    • #4597 Reply
      Martyn
      Keymaster

      Without seeing the valve or the nozzles I can only speculate that either the valve is slow to close or the nozzle edge is not clean (burs etc).

    • #4599 Reply
      Ed
      Guest

      Martyn
      I have 4 solenoids and 4 brass nozzles. The nozzles do not appear to have any issues and i can’t believe all four would have the same problem.
      I am now fairly sure I bought poor quality solenoids.
      I think I will buy one of yours and more if it solves my problem.
      What would be your shipping cost for one solenoid to Ontario and how do I go about buying one
      Thanks
      Ed

    • #4624 Reply
      Martyn
      Keymaster

      For a single valve it is about US$10 to ship to Canada.

      What valves do you have ?
      Have to cleaned/serviced them?

    • #4627 Reply
      Ed
      Guest

      They are no name brands
      Three are in a plastic housing and one in an aluminium housing. They are virtualy unused but I did take them appart and they are as clean as a whistle.
      I checked the specs. the plastic ones do not give a response time but the aluminium one has a response time of 50 ms. I thik this is much too slow. The Skao valve has a reponse time of 20ms i believe

    • #4678 Reply
      Martyn
      Keymaster

      How responsive are the springs?

    • #4693 Reply
      ed
      Guest

      Its hard to say as I do not Java frame of reference.

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