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  • Mumbles
    Mumbles

    Canada Member - 2 Years
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    #198811

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    • This reply was modified 13 hours, 33 minutes ago by MumblesMumbles.
    • This reply was modified 13 hours, 31 minutes ago by MumblesMumbles.
    Mumbles
    Mumbles

    Canada Member - 2 Years
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    #198710

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    Mumbles
    Mumbles

    Canada Member - 2 Years
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    #198631

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    Mumbles
    Mumbles

    Canada Member - 2 Years
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    #198628

    Here’s the file in PDF which contains some info which Jeff R. posted here a few years ago.

    Vishay-Cap-Part-Numbers

    Mumbles
    Mumbles

    Canada Member - 2 Years
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    #198609

    I’ve put off ordering from digikey because they seem to have so few different uf sizes in the range we typically use. Am I missing something?

    At the link below…..I see a 0.22uf and a 0.15uf. Nothing in between. Am I missing something?

    Some of the Mercury mags call for 0.18uf…..

    https://www.digikey.com/catalog/en/partgroup/1839-hq-series/3932?mpart=MKP1839422084HQ&vendor=56

    Chuck

    No. you’re not missing anything, that’s what Vishay has to offer in this series of caps. A .22 uF cap would be the logical choice for your Merc mag. Another option might be an Orange Drop cap but they are large and hard to fit. They are more suited for motors from the 20’s – 40’s which had lots of room under the flywheel.

    https://www.ebay.ca/sch/newoldsound/m.html?_nkw=orange+drop

    Here’s something I saved from the old blue boards explaining the P/N’s and applications of the MKP1839 caps. Thanks again Jeff!

    I guess that’s not going to happen. Wordfence won’t let me attach the file. I’ll try it again later doing it another way.

    • This reply was modified 3 days, 10 hours ago by MumblesMumbles.
    Mumbles
    Mumbles

    Canada Member - 2 Years
    Replies: 4387
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    #198546

    You can cut the cork seal out of a piece of rubberised cork gasket material and the O ring will be in one of those universal O ring kits you can buy. Just make sure the chosen O ring is not too tight on the driveshaft. A 5/8″ punch will cut a neat hole in the cork.

    Mumbles
    Mumbles

    Canada Member - 2 Years
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    #198502

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    Mumbles
    Mumbles

    Canada Member - 2 Years
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    #198493

    Here’s the layout of the seven screws and the two 3/8″ brass nuts holding the shift rod on. There will be a small lock washer between the nuts.

    IMGP0411

    Mumbles
    Mumbles

    Canada Member - 2 Years
    Replies: 4387
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    #198478

    The powerhead needs to be removed so the shift linkage can be undone. The driveshaft will slide right out of the crankshaft .

    Mumbles
    Mumbles

    Canada Member - 2 Years
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    #198474

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    Mumbles
    Mumbles

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    #198471

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    Mumbles
    Mumbles

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    #198455

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    Mumbles
    Mumbles

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    #198451

    Buck: The 1839HQ series are definitely known to work and be reliable.

    If a cap fails, it shouldn’t make your motor quit instantly but the uF rating will shoot off the high end of the scale and the points will burn prematurely causing a miss. Test their rating again after running the motor for a while, maybe 20 minutes, again after one hour, and see if it has changed any.

    When I started experimenting with caps, I bought a bunch from Mouser but they had a lower voltage rating and might have had a different composition than the Vishay HQ caps and they wouldn’t last. Now I have a bag of them collecting dust.

    22-MFD-Caps

    This tool has to be one of the best investments I’ve ever made as it identifies the item you are testing and gives an accurate reading in picofarads instead of microfarads. It will identify different types of transistors, diodes, resistors, and capacitors etc. I keep one in the house for working on vintage audio equipment and another one out in the garage as a dedicated outboard tool. Highly recommended!

    https://www.banggood.com/DANIU-3_5inch-Colorful-Display-Multi-functional-TFT-Backlight-Transistor-Tester-p-1083042.html?rmmds=search&utm_source=tradetracker&utm_medium=tradetracker_no&utm_campaign=0&utm_content=227735&aff_key=0%3A%3A227735%3A%3Ajp7tsnaz7s02ko3q02n08%3A%3A%3A%3A1543811985&aff_campaign=16952&cur_warehouse=CN

    Mumbles
    Mumbles

    Canada Member - 2 Years
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    #198409

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    Mumbles
    Mumbles

    Canada Member - 2 Years
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    #198408

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