Serrano UV-550-B

Discussion in 'Stringing Techniques / Stringing Machines' started by marosmith, Mar 1, 2013.

  1. marosmith

    marosmith Professional

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    I saw one of these on Craigslist for $50 and I simply couldn't resist.

    I have had my father in law stringing my rackets and got rid of my old gamma table top stringer a couple years ago. Since then I haven't really strung.

    This unit came with the original owners business book, instructions, and number of tools and clamps etc...

    Even better it came with a couple packs of strings, and some leather grips!

    I had no string on me and decided to break it in with my Prestige Mid.

    I had a half set of VS Gut 16g and Ashaway 15l gut, both looked to be over 25 years old!

    After trial and error I did VS mains and Ashaway crosses. Definitely glad I had a couple awls and some olive oil on the last two crosses!

    This machine really is wonderful. Took over 3 hours to get it going and to string the racket. It needed some grease to get the clamps and bars to slide freely and switching the mains clamps to cross clamps was a little tricky.

    This unit was built in 1976 and definitely has the upgraded mounts as it can easily do an OS sized frame.

    I will tryi to post pics!
     
    #1
  2. marosmith

    marosmith Professional

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    [​IMG]


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    [​IMG]

    [​IMG]
     
    Last edited: Mar 1, 2013
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  3. Lakers4Life

    Lakers4Life Hall of Fame

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    Ingenious design for circa 1970. Those look like Prince glide bar clamps.
     
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  4. marosmith

    marosmith Professional

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    I agree. Once I got it figured out I realized how darn fast this machine is with the foot operated weight and the gripper is pretty quick too.

    All I know is if I can string a prestige mid with 25+ year old gut with it I can string anything!!
     
    Last edited: Mar 1, 2013
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  5. ATP100

    ATP100 Professional

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    Weights look backwards, what does the owner's manual say?
     
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  6. marosmith

    marosmith Professional

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    Yes I took the pic before I fixed them. That's how they were when I picked it up.
     
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  7. coachrick

    coachrick Hall of Fame

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    Wow, here comes those eye-twitches I get when thinking of the hundreds of rackets I strung on that machine(middle '70s and early '80s). I don't remember a padded clamp handle, however.

    Couple of thoughts. You'll likely make your own decision; but having the clamp handles facing the cross-strings already installed just gets them out of the way while you're stringing the next cross...also makes them easier to operate as you near the last few crosses on a top-down pattern.

    That machine really brings back memories! Good find!
     
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  8. coachrick

    coachrick Hall of Fame

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    Also, we bought hundreds of sets of string from Ashaway over the years; but I never knew of Ashaway Natural Gut. Since they were an American company, I wonder if it was re-branded American Eagle?
     
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  9. dak95_00

    dak95_00 Professional

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    Are these machines considered to be automatic drop weight like the Stringways? I've been wondering for some time.
     
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  10. coachrick

    coachrick Hall of Fame

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    You know, when we were using them back in the '70s, I don't think there was a great deal of concern about the lever angle...as long as the lever arm didn't bottom out. The degree range for the arm was not that great...you pretty much were between 2:00 and 3:00(more or less, I reckon ;) ) when stringing a 'normal' string. No poly and not much Kevlar 'back then'...something like Blue Star would likely bottom out on the first pull, so a second might be necessary. A few others like Guttex might be stretchy enough to bottom out on the first pull.
     
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  11. marosmith

    marosmith Professional

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    Yes I saved the Ashaway package and will try to post a pic.

    In stringing the gut it never bottomed out. Doesn't seem like there is enough room for it to do that the way it's configured.
     
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  12. ATP100

    ATP100 Professional

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    I was taught to have the weight bar level when tensioning. (clamping)
    Right or wrong, I did hundreds, if not thousands of racquets doing
    this.

    I still own and use this machine from time to time.
     
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  13. Lakers4Life

    Lakers4Life Hall of Fame

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    You are correct, but Serranos and Stringway/Laserfibre are automatic drop wieghts. The angle of the weight bar has no bearing as to tension being appied, once it's set.
     
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  14. tball

    tball Semi-Pro

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    What lifts the weight after pulling?
     
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  15. marosmith

    marosmith Professional

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    After you clamp you push the foot lever and it lifts the weight.
     
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  16. jim e

    jim e Hall of Fame

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    Back in the 60's and early 70's I strung a lot of racquets on the Serrano. Nice that yours has the upgrade to hold the larger racquets. The upgrade has been long discontinued. I still have my old machine (no upgrade) , and will use it ocassionally when I get a wooden racquet.
    Good luck.
     
    Last edited: Mar 5, 2013
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  17. marosmith

    marosmith Professional

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    [​IMG][/IMG]

    Some loctite and steel wool and the rust is gone! Now I just need to calibrate and clean the gripper.
     
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  18. coachrick

    coachrick Hall of Fame

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    Wow...that's impressive. Speaking of the gripper, I recall more than one machine using a folded business card between the gripper and the string. Once the gripper started on the path of string destruction, it was hard to fix(at least for the folks I worked with).
     
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  19. Steve Huff

    Steve Huff Legend

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    I, too, still have my old Serrano. It doesn't have the upgrade either. How does your leg feel after stringing one. Can you imaging those old stringers doing 20 a day on one of these? Well, they did. They probably had massive quads.
     
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  20. coachrick

    coachrick Hall of Fame

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    Hey, I resemble that remark!!! In the mid-seventies, we had a Serrano is decent shape and its clone, the Oliver. The Oliver's tension brake was busted, so we had to e-a-s-e the weight down with our leg. A SERIOUS one-legged workout! Did a good dozen rackets in a normal day...close to 20 on some days.
     
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  21. Andyroo10567

    Andyroo10567 Professional

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    Good to see stringing had more benefits than it should have.
    90's Logic :
    " Girls dig the quads. "
    Serrano : MEN, WE MUST INCORPERATE QUAD MOVEMENT IN OUR MACHINES.
     
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  22. marosmith

    marosmith Professional

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    I have yet to get tired using the pedal. Seems pretty easy to be honest.
     
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  23. coachrick

    coachrick Hall of Fame

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    Gets a little more interesting when the #1 university player comes in at 4pm with 6 new rackets just received and needs them for the trip to the NCAAs the next morning! ;)

    We often joked about having to sprint in a curved direction when we first hit the courts after work! Took some time for the muscles to even out, I reckon :).
     
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  24. marosmith

    marosmith Professional

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    Is it safe/ advisable to lubricate the gripper with wd-40 or an other lubricant.

    It doesn't glide as smooth as it should. Once the string is "gripped" it doesn't slip but the initial gripping isn't as smooth as it should be which I think is causing it to tension about 10% low.
     
    Last edited: Mar 14, 2013
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  25. coachrick

    coachrick Hall of Fame

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    You speak of lubing the outside of the gripper, yes? Is it a ball bearings-in-a-channel sort of system? If yes,lubing the bearings would be fine. WD-40 is OK, but I reckon there are better lubes. Just keep the lube where it's wanted ;) .
     
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  26. marosmith

    marosmith Professional

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    Looks like a channel deal, I see no bearings. But of course I am new to all of this and could be missing something.
     
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  27. Irvin

    Irvin G.O.A.T.

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    I use a drop of machine oil every now and then to lube the bearings.
     
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  28. coachrick

    coachrick Hall of Fame

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    There might be one or two(or more) bearings riding in the channel...that's where that drop or two would work. If you have one of those tiny low-pressure WD 40 cans, that should work. Otherwise, just the lightest, quickest spray from the regular can would work(pull the gripper as far forward as possible to spray a far into it as possible)or insert the straw as far as possible. If the bearing(s) are scored or flattened, sometimes working the slide back and forth rapidly can reorient them so they operate more smoothly.

    This is another instance in which the folded business card might help. Inserted in a V-shape into the gripper, the string will rest in the 'V' of the card, effectively reducing the width of the gripper opening. This will allow earlier gripping and the slide won't need to travel as far. this also works if the gripper has been nicked or otherwise might damage the string as it closes. Can't tell you how many times I used that trick throughout the '70s and '80s on a wide variety of strings and machines...very helpful with a recalcitrant Prince 100 or 200 gripper. ;)
     
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  29. marosmith

    marosmith Professional

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    Thanks for the advice. I was able to lube it and clean the gripper with nail polish.

    I strung a racket just now at 55lbs with BB Bomber co poly. Racket tune and my tourna string tension gauge come out between 56-58 lbs so its definitely not slipping now!

    Thanks.
     
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  30. Irvin

    Irvin G.O.A.T.

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    Please tell me you did not use NAIL POLISH to clean something.
     
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  31. coachrick

    coachrick Hall of Fame

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    But think how purty and shiny it will look! :)
     
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  32. marosmith

    marosmith Professional

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    LOL no polish remover I miss typed.
     
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