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    Not really audio related, but maybe someone here has some mechanical aptitude

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    Elrick

    Posts : 71
    Join date : 2012-09-02
    Location : Bellingham WA

    Not really audio related, but maybe someone here has some mechanical aptitude

    Post by Elrick on Fri Oct 24, 2014 10:35 pm

    I'm working on a Hallicrafters SX42 receiver and need help on a mechanical type problem. I figure maybe there's someone who has good mechanical aptitude. I'm trying to salvage some parts from one receiver and use them in another SX42.  Please see Antique Radio Forum :
    http://www.antiqueradios.com/forums/viewtopic.php?f=5&t=262121

    Thanks for any tips.

    deepee99

    Posts : 1260
    Join date : 2012-05-23
    Location : Wallace, Idaho

    Re: Not really audio related, but maybe someone here has some mechanical aptitude

    Post by deepee99 on Sun Nov 02, 2014 12:45 pm

    There's a guy here in northern Idaho who can do that sort of work. PM me if you want his contact info.

    gener8r

    Posts : 56
    Join date : 2012-04-28

    Re: Not really audio related, but maybe someone here has some mechanical aptitude

    Post by gener8r on Mon Nov 03, 2014 9:23 pm

    Looking at the illustrated parts list its not really large enough for me to determine conclusively how number 24 is secured.   IF you cannot see any set screws, screws, or retaining clips of any type such as "C" or "E" clips used to secure it than it is probably pressed into place.   If that's the case you really should have the proper puller, even at that small a size, to remove it without damage.  This from some one who has a small fortune invested in pullers for everything from small clocks up to Caterpillar heavy equipment.  
    If that piece you show illustrated is an assembly that can be taken whole somewhere you might try a local small engine repair shop, or someone that repairs clocks, or even a pro automotive shop or high performance automotive shop.   Certainly if you have a machine shop in the area they'll be able to disassemble it faster than its taken me to write this.

    Elrick

    Posts : 71
    Join date : 2012-09-02
    Location : Bellingham WA

    Re: Not really audio related, but maybe someone here has some mechanical aptitude

    Post by Elrick on Wed Nov 05, 2014 8:13 pm

    I'm getting ready to throw in the towel on this problem. Part 24 can't be removed from the shaft, looks like it's welded or brazed together and the only way to remove it is by pulling it out from the rear, but to do that I have to remove the whole damn tuning assembly. At least I know have a new set of Bristol Wrenches.

    I guess I'll put it back together and sell the donor unit and try to modify the other so I can somehow engage the brand spread tuner. It's too bad, after being re-caped the donor unit receives FM well but it has a B+ short on the band switch wafer when set to AM mode, burning out a resistor in short order.  



    The donor is on the left, the fully working unit is on the right. I must say working on Dynakits is a cinch compared to this complicated beast. They do sound nearly high fidelity with 2 PP 6V6 and a nice speaker. This model covers the complete frequency range from broadcast AM all the way to FM, and once properly aligned and restored they are a really quite capable on the shortwave bands. I read that President Kennedy had it's successor, the Hallicrafters SX62 on Airforce One.


    Last edited by Elrick on Wed Nov 05, 2014 8:53 pm; edited 1 time in total

    deepee99

    Posts : 1260
    Join date : 2012-05-23
    Location : Wallace, Idaho

    Re: Not really audio related, but maybe someone here has some mechanical aptitude

    Post by deepee99 on Wed Nov 05, 2014 8:17 pm

    That looks like a Collins S in the background. Used to have a rack of those.
    Before giving up I would call Dave Sherman Engineering in Wallace, Idaho.

    Elrick

    Posts : 71
    Join date : 2012-09-02
    Location : Bellingham WA

    Re: Not really audio related, but maybe someone here has some mechanical aptitude

    Post by Elrick on Wed Nov 05, 2014 8:43 pm

    deep - Collins S line, I wish! What you see there is the mighty Yaesu FT101E. Uses TV sweep tubes (6JS6C) for the output with a 12BY7A driver, it's a hybrid but works very well with about 120 W output with a nice sensitive receiver and good audio. Does AM/SSB/CW.

    I can't justify the cost to have anyone else work on this old Hallicrafters gear, shipping alone would kill. I just need to cut my losses and clear the bench, plenty of projects waiting.

    deepee99

    Posts : 1260
    Join date : 2012-05-23
    Location : Wallace, Idaho

    Re: Not really audio related, but maybe someone here has some mechanical aptitude

    Post by deepee99 on Wed Nov 05, 2014 8:53 pm

    Elrick wrote:deep - Collins S line, I wish! What you see there is the mighty Yaesu FT101E. Uses TV sweep tubes (6JS6C) for the output with a 12BY7A driver, it's a hybrid but works very well with about 120 W output with a nice sensitive receiver and good audio. Does AM/SSB/CW.

    I can't justify the cost to have anyone else work on this old Hallicrafters gear, shipping alone would kill.  I just need to cut my losses and clear the bench, plenty of projects waiting.

    I was just thinking you might give Dave a yell: phone is 208.752.1021, maybe he could talk you through it.
    I should've recognized the Yaesu. Nice rig.
    73


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