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  1. #1
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    Knobs for Alps Dual Concentric Encoders?

    Anyone know of a source for concentric knobs that will fit the Alps Concentric encoders. The inner shaft Dia. is 3.5mm and the Outer shaft is 6mm.

    These do not need to be aircraft specific. Any source brand or style.

    Thanks!

  2. #2
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    Re: Knobs for Alps Dual Concentric Encoders?

    Been looking for this for quite awhile and just found that VRInsight sells them for about $2.75 EA (!!!!)

    I have not ordered them myself yet, but thought I should post the info.

    FYI: I ordered some from OpenCockpits but found out the inner shaft diameter on their knobs are 3mm - so no go.

    - Dave

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    Re: Knobs for Alps Dual Concentric Encoders?

    Quick update...

    I just went to order a couple to try them out and found the shipping cost to the US is a flat 35EUR (about $47 USD). Outch.

    I will have to wait around here to see if someone else has had any luck with those before I spend $100 on knobs that may not fit.

    - Dave

  4. #4
    Warren fsaviator's Avatar
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    Re: Knobs for Alps Dual Concentric Encoders?

    Quote Originally Posted by dsnyder View Post
    Quick update...

    I just went to order a couple to try them out and found the shipping cost to the US is a flat 35EUR (about $47 USD). Outch.

    I will have to wait around here to see if someone else has had any luck with those before I spend $100 on knobs that may not fit.

    - Dave
    Dave, what are you ordering, and from who? I may be able to help out on the shipping

    Warren

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    Re: Knobs for Alps Dual Concentric Encoders?

    Sorry,

    I guess that post was a bit ambiguous.

    I was looking for the dual concentric knobs from VRInsight (http://www.vrinsightshop.com/shop/st...20111116050601).

    - Dave Snyder

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    Re: Knobs for Alps Dual Concentric Encoders?

    UPDATE:

    I see that Leo Bodnar sells a Dual Concentric Rotary (ELMA E37 w/ 4/6mm shaft diameters) AND the knobs (grey or black) for about $32US.

  7. #7
    Warren fsaviator's Avatar
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    Re: Knobs for Alps Dual Concentric Encoders?

    Quote Originally Posted by fsaviator View Post
    Dave, what are you ordering, and from who? I may be able to help out on the shipping

    Warren
    Sorry Dave, they want an outrageous amount to ship to Germany too.

  8. #8
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    Re: Knobs for Alps Dual Concentric Encoders?

    Hello Dave,

    Other options would be
    for Knobs:
    Opencockpits: http://www.opencockpits.com/catalog/....html?cPath=50, obviously the wrong size as Dave indicated......., then:
    Simworld: http://www.sismo-soluciones.com/index.php/shop/knobs
    And for Knobs and Dual encoders:
    Simparts: http://www.simparts.de/epages/154657...oducts/15-0004 and http://www.simparts.de/epages/154657...ducts/200-0013

    These certainly will not be the cheapest solutions but may be a cheaper option when considering the total cost to include shipping.
    HTH,

    Best Regards,
    Marc

  9. #9
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    Re: Knobs for Alps Dual Concentric Encoders?

    Thanks for the info, Marc (and thanks to Warren for checking as well).

    The Simworld ones seem promising - I sent them an email asking for shaft diameters as they are not listed.

    The Simparts dual concentric knobs are 6mm outer and 3mm inner (just like OpenCockpits), so I suspect you would have to drill the inner knob out a bit to fit the 3.5mm inner shaft of the Alps encoder.

    By the way, OpenCockpits got back to me and confirmed that customers do just that - drill the 3mm inner knob shaft out to 3.5mm. I have heard then that you then put heat shrink tubing on the shaft of the inner encoder to "grip" the drilled out knob.

    Dave

  10. #10
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    Re: Knobs for Alps Dual Concentric Encoders?

    Hello Dave,

    I stumbled onto another knobs offer:
    http://www.aviationmegastore.com/b73...=355&art=95911
    I have dealt with the aviationmegastore many teams and they are quite reasonable people.
    The inner knob is also 3mm so I guess the OC answer to drill out or ream the hole will apply to all the knobs.

    Best regards,
    Marc

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