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    Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

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    msupr

    Posts : 11
    Join date : 2012-11-21

    Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by msupr on Sun Feb 03, 2013 12:07 pm

    There are a few pictures at the link below of a stainless steel Dynaco Amp cover I had made, not the mirrored finish Stainless, but a more satin finish. Looks good with Bob's Amp.
    It acts as a nice cover when you need it, i set it up so it has two tabs that I can just slide into place and pull it off if I want to (no screws required.

    http://www.flickr.com/photos/60175282@N07/8438227019/in/photostream/

    One photo below ..



    http://www.flickr.com/photos/60175282@N07/8594515405/in/photostr


    Last edited by msupr on Thu Mar 28, 2013 8:47 am; edited 2 times in total

    tubes4hifi
    Admin

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    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by tubes4hifi on Tue Feb 05, 2013 10:28 pm

    very nice! cost less than $70? If so, you could sell hundreds of them . . .

    msupr

    Posts : 11
    Join date : 2012-11-21

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by msupr on Wed Feb 06, 2013 2:51 pm

    They would be 90 each, plus shipping based on current material cost.

    mantha3

    Posts : 298
    Join date : 2010-11-10

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by mantha3 on Fri Feb 08, 2013 1:21 pm

    Where do you get one?

    It would be interesting to see how much it would be total to get one of these at 90.00 and then the amount to have it chrome plated.

    msupr

    Posts : 11
    Join date : 2012-11-21

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by msupr on Fri Feb 08, 2013 1:57 pm

    I had this one made in my sheet metal shop, we had some Stainless Steel perforated material from a previous job. Based on my experience with plating I would expect it to be a add of 200 or so. Just a guess. Not sure how well the Stainless accepts plating, have never done any plated stainless parts.

    mantha3

    Posts : 298
    Join date : 2010-11-10

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by mantha3 on Fri Feb 08, 2013 2:03 pm

    Ahh.. sure

    I have a Bob Latino ST120 amp... Stainless Steel shinny chassis... It would be cool to have the cage with the same shine.

    DynakitParts
    Admin

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    Chrome Plating stainless steel

    Post by DynakitParts on Sat Feb 09, 2013 12:50 am

    Hi,
    I once owned a small plating shop back in the late 70's. Mostly motorcycle &
    antique auto restoration type of work. Chrome plating of stainless steel back then
    not perfected and it would easily peel-off the base metal. There is currently a
    plating process called "flash plating" where the chromium is deposited directly on
    to the stainless steel...there is no copper or nickel pre-plating. Accordingly, the
    base metal (stainless steel) must be pre-polished to a mirror finish prior to the
    chromium plating. Polishing of the perforated metal is a difficult task and the
    resulting costs of both polishing & plating could easily exceed $200. Finding a
    shop that does this type of specialty plating on a one piece basis will be a
    challenge.

    I would just have the covers electro-polished.

    Kevin

    PS: I guess you know I stock covers that will fit Bob's VTA ST-70 & ST-120. I also
    now have the newer style Dynaco labels for the covers.


    ramon68

    Posts : 83
    Join date : 2009-04-12
    Age : 75
    Location : naples fl

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by ramon68 on Sat Feb 09, 2013 8:45 am

    I had never heard of electro-polishing 'till this morning. Cool.

    mantha3

    Posts : 298
    Join date : 2010-11-10

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by mantha3 on Sat Feb 09, 2013 9:49 am

    Kevin,

    I have a cage from you that I got about 2 years ago. Excellent quality and I'd buy again. This thread is pretty neat and a chrome shine would be cool... I'm sure I won't act on it. I run my cage on when I don't run a GZ37 tube that is too tall


    Andy Jersey

    Posts : 69
    Join date : 2012-09-29

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by Andy Jersey on Tue Feb 19, 2013 3:54 pm

    What would it cost to fabricate cover made of stainless to match vta chassis and skip the chrome plating?

    msupr

    Posts : 11
    Join date : 2012-11-21

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by msupr on Tue Feb 19, 2013 4:21 pm

    i custom run of perforated metal in a mirror finish stainless would be very costly. minimum required order and frt would run cost for material into the thousands. plus I would be concerned about the condition after perforating as a mirrored finish really shows scratches and minor dents. I was going to play around with trying to polish the cover that I made to see if i could get it close.

    msupr

    Posts : 11
    Join date : 2012-11-21

    Had the cover polished, here is the final look

    Post by msupr on Wed Mar 27, 2013 11:31 am

    Here is a link to the polished cover.

    http://www.flickr.com/photos/60175282@N07/8594515405/in/photostr


    mantha3

    Posts : 298
    Join date : 2010-11-10

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by mantha3 on Wed Mar 27, 2013 11:37 am

    Wholey Scheyat! I want one!

    Serious, PM me if you are interested in building another with some sort of mark up for you time... I'd be interested in hearing the price.

    Killer looking cage regardless!

    mantha3

    Posts : 298
    Join date : 2010-11-10

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by mantha3 on Wed Mar 27, 2013 11:38 am

    The polished look is killer

    mantha3

    Posts : 298
    Join date : 2010-11-10

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by mantha3 on Wed Mar 27, 2013 1:52 pm

    Bob Latino,

    You should buy 10 of these and sell them as options for your ST70s and ST120s! Man that looks sharp

    Having photos of your amps with these cages would give the ST amps a nice modern POP that would sell. IMHO. I think of your ST70 and ST120 amps as a classic car hot rodded in principal. This to me has that look too. A chromed out classic

    hawaii.ken

    Posts : 157
    Join date : 2012-01-31

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by hawaii.ken on Wed Mar 27, 2013 2:23 pm

    msupr wrote:Here is a link to the polished cover.

    http://www.flickr.com/photos/60175282@N07/8594515405/in/photostr

    Super nice!

    baddog1946

    Posts : 304
    Join date : 2010-02-03
    Location : Costa Rica

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by baddog1946 on Wed Mar 27, 2013 3:39 pm

    Very nice looking cover. But if it is the stock height I think it is too close to the top (hottest part) of a KT120.
    Make it a bit taller (1/2") for the KT-120 and I'm interetsted. Looks beautiful otherwise. congrats on a job well done.

    mantha3

    Posts : 298
    Join date : 2010-11-10

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by mantha3 on Wed Mar 27, 2013 6:40 pm

    The 1/2" would be interesting... You could sneak a GZ33 Mullard under that too.

    mantha3

    Posts : 298
    Join date : 2010-11-10

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by mantha3 on Wed Mar 27, 2013 6:41 pm

    PS - I like the open rear too... Let the heat out more

    msupr

    Posts : 11
    Join date : 2012-11-21

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by msupr on Wed Mar 27, 2013 10:02 pm

    I did not have a real cover to compare the height to. I tried to scale a picture of it. I really do not think heat will be a issue because the back is wide open on this cover, heat should have a much easier path dissipate with a wide open back vs a closed back. The only issue i see is clearance, of the different tube types that may be used in these type of amps. My first thought when I put the top on was toaster

    peterh

    Posts : 643
    Join date : 2012-12-25
    Location : gothenburg, sweden

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by peterh on Thu Mar 28, 2013 3:28 am

    The original dynakit cover is 120mm high


    tubes4hifi
    Admin

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    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by tubes4hifi on Thu Mar 28, 2013 1:45 pm

    oh yes! the worlds best and finest sounding toaster! yum! Very Happy

    baddog1946

    Posts : 304
    Join date : 2010-02-03
    Location : Costa Rica

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by baddog1946 on Thu Mar 28, 2013 4:42 pm

    The top of any tube dissapates the most heat and the metal cage in such close proximity would also get very hot and is basically a heat sink. I put a stock cage over my amp and it was within 1/16"from the top of the KT120 tubes and may actually touch them on some amps. This is not good for the tubes period. Kt88 and others are less tall and work fine but if you put an EL34 in there and measure what Dynaco considered a safe distance to the gage on a smaller tube with less heat you will see what I mean. At $50 per KT120 I would not invite problems with mine.
    IMHO I think that there should be enough room at the top to allow plenty of air exchange so the tubes do not overheat.
    Baddog

    peterh

    Posts : 643
    Join date : 2012-12-25
    Location : gothenburg, sweden

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by peterh on Thu Mar 28, 2013 4:47 pm

    baddog1946 wrote:The top of any tube dissapates the most heat and the metal cage in such close proximity would also get very hot and is basically a heat sink. I put a stock cage over my amp and it was within 1/16"from the top of the KT120 tubes and may actually touch them on some amps. This is not good for the tubes period. Kt88 and others are less tall and work fine but if you put an EL34 in there and measure what Dynaco considered a safe distance to the gage on a smaller tube with less heat you will see what I mean. At $50 per KT120 I would not invite problems with mine.
    IMHO I think that there should be enough room at the top to allow plenty of air exchange so the tubes do not overheat.
    Baddog

    You also want ample space between the tube tops and cover to cope with transports and / or shipping.
    If the cover flexes and touches the tube it might easily break the glass.

    But i must admit that the stainless looks very nice ! And yes, bob should have them as extras!

    ramon68

    Posts : 83
    Join date : 2009-04-12
    Age : 75
    Location : naples fl

    Re: Stainless Steel Dynaco ST-70/ST-120 NEW POLISHED COVER PHOTO...

    Post by ramon68 on Thu Mar 28, 2013 6:32 pm

    I don't get it. Unless one has small children or curious pets, there is no reason to cover beautiful glowing tubes. Cages raise heat levels and block the view.

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