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Thread: Manfrotto 400 Geared Head Quick Release Plate dimensions

  1. #1

    Join Date
    Jan 2020
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    3

    Manfrotto 400 Geared Head Quick Release Plate dimensions

    Hello. First post. I have a Manfrotto 400 Geared head coming my way and have been trying to find the diameter of the top of the quick release plates but have found differing numbers. I found 2.95" twice and was hoping someone with a plate could give me its dimensions. I want to mill a conical shaped adapter going from the top of the quick release plate to a 1.5" diameter threaded adapter that screws into the bottom of my 19 lb. searchlight. Any help will be appreciated, especially dimensions taken with a caliper if possible.

  2. #2

    Join Date
    Feb 2008
    Location
    The Highlands of Scotland
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    243

    Re: Manfrotto 400 Geared Head Quick Release Plate dimensions

    Are you talking about the RC4 adapter plates?

    I use several on my cameras, but they are rectangular on 3 sides, and arched on the 4th......a bit like an arched doorway.

    What dimensions are you looking for?

    Mike

  3. #3

    Join Date
    Jan 2020
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    3

    Re: Manfrotto 400 Geared Head Quick Release Plate dimensions

    No, not RC4's. These are round and different specs say differing diameters from about 2.75" to 2.95". I think they are unique to this specific Manfrotto 400 head. I'm looking for the largest diameter of the top of the plate, where the 3/8" stud is. I'm being picky in that I would like the measurement in thousandths of an inch only because I have a lathe and will cut my conical adapter to exactly match the plate. Another member gave me a 3" diameter.

    https://www.manfrotto.com/be-en/quic...2mm-400pl-hig/

  4. #4

    Join Date
    Feb 2008
    Location
    The Highlands of Scotland
    Posts
    243

    Re: Manfrotto 400 Geared Head Quick Release Plate dimensions

    Ah, ok, now i see what you're looking for.

    I was confused because my 405 and 410 geared heads use RC4 plates.

    Sorry, i can't help you with that head.

    Mike

  5. #5

    Join Date
    Jan 2020
    Posts
    3

    Re: Manfrotto 400 Geared Head Quick Release Plate dimensions

    Thank you for your efforts to help!

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