How do I repair a broken steel cable? | FerrariChat

How do I repair a broken steel cable?

Discussion in 'Technical Q&A' started by Periokid, Jun 12, 2011.

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  1. Periokid

    Periokid Karting

    Oct 19, 2004
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    David
    I need some ideas on repairing a convertible top cable.

    It is a thin cable that has snapped. Replacing the cable is a major task and if I can just repair the cable, it would be MUCH easier.

    What is the best way to join two broken ends of a small steel cable together? Keep in mind that this cable is under tension and I wish to preserve its length (ie not shorten it).

    I already tried wire crimping it which certainly joined the pieces together. The problem was that this repair cannot handle the tension.

    Ideas?
     
  2. dm_n_stuff

    dm_n_stuff Four Time F1 World Champ
    Lifetime Rossa Owner

    #2 dm_n_stuff, Jun 12, 2011
    Last edited by a moderator: Sep 7, 2017
    depends on if you have room for a couple of these.

    Buy them at a bike shop, or good hardware store, they are wire cable clamps.

    place one clamp on each end of the frayed cable (neaten up the ends and shorten them just a little bit.) then splice in a short section of NEW cable to preserve the original length between the clamps. Do it carefully, get it good and tight when you squeeze the clamp, and you'll be fine.

    We do it fairly regularly on a couple pieces of machinery we have, the clamps stand up to 1500 lbs of dead weight without a problem.

    D
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  3. Periokid

    Periokid Karting

    Oct 19, 2004
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    Thanks, that is just what I was looking for.

    How do you crimp it? Is there a special tool?
     
  4. enzo thecat

    enzo thecat F1 Rookie
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    I bet I know what cable you're talking about. Just had mine replaced on both sides. In fact, the car is still at LFSC in Il. I'm hoping to get it back early this week.
     
  5. Periokid

    Periokid Karting

    Oct 19, 2004
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    What was the damage for that job?
     
  6. Ney

    Ney F1 Veteran
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    Apr 20, 2004
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    You need a fence wire connector to attempt repair.
    http://www.kencove.com/fence/Connectors_products.php

    What Dave shows is a crimp sleeve. If you can get the right size, a quik splice will be a clearer solution. Either will work. The crimp sleeve requires a crimping tool.
     
  7. 2NA

    2NA F1 World Champ
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    Unless the car is a piece of crap and you'll be junking it next week, replace the cable.

    If the cable broke, what makes you think a splice will last?
     
  8. dm_n_stuff

    dm_n_stuff Four Time F1 World Champ
    Lifetime Rossa Owner

    While I agree that replacement is the better option, I can tell you that we use these splices on heavy duty lift tables without incident. They're lifting pallets of paperboard that can weigh in excess of 1000 lbs and hold up very well.

    d
     
  9. jacques

    jacques Formula Junior

    May 23, 2006
    877
    Los Angeles/Florida
    Just a thought..The suggested repair looks to be the perfect solution..If the repair is to be done in situ..drive to your friendly hardware store or boating supply store..they will no doubt have the tool for the job since this is a common request..I'll just bet that they'll be way to happy to let you use it on your Ferrari..it's probably as close as the clerk will get to one..just a thought...Jacques.
     
  10. enzo thecat

    enzo thecat F1 Rookie
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    A little under 1K.
     
  11. Pranucci

    Pranucci Formula Junior
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    #11 Pranucci, Jun 13, 2011
    Last edited: Jun 13, 2011
    Nicopress tool
    http://www.nicopress.com/T1.htm
    They are very strong and reliable IF done correctly. Try a boat repair shop.
    But have you tried using the broken ends to fish a new cable in?
    You can put in a short piece of new wire rope, but then you're making 2 splices. Is there clearance for the splices to pass when moving? If your repair makes the cable shorter than originally, is there adjustment for that?
     
  12. 2NA

    2NA F1 World Champ
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    Why did it break originally?

    What car are we discussing here? Pictures?
     
  13. Periokid

    Periokid Karting

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    Apparently these cable break all the time on the F430 spider.

    I don't have pics but I can get some.
     
  14. ramosel

    ramosel Formula 3

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    +1 or a really good fishing shop. Lots of options on cable, crimps and tools. (think leaders and downrigger)

    Rick
     
  15. enzo thecat

    enzo thecat F1 Rookie
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    #15 enzo thecat, Jun 15, 2011
    Last edited by a moderator: Sep 7, 2017

    Mine just got back from the dealer. The top is now perfect. This has been something I've been trying to chase down for years. Several years ago, the dealer even took the top apart and never found the broken cable. This time they took apart the good side and saw THAT one fraying. Then they realized that the same part was missing from the side I was complaining about. Turns out is was broken in two and hanging out of sight.

    Pictures, sure. This is one of the sides. The dealer was kind enough to include the packaging from the new part.
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  16. 2NA

    2NA F1 World Champ
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    #16 2NA, Jun 15, 2011
    Last edited by a moderator: Sep 7, 2017
    Looks to be part #9 in the drawing (of which there are 2). With a break that close to the end I don't see how a splice is practical or even possible.

    The length of the cable looks pretty critical. I don't think you can get away with shortening it.
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  17. enzo thecat

    enzo thecat F1 Rookie
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    #17 enzo thecat, Jun 15, 2011
    Last edited: Jun 15, 2011
    Yes, I am doubtful a splice will work for the OP if this is the same issue. The experts tell me that these cables endure a hull'uv'a'lot of tension when the top is activated.



    P.S. Could it be #8?
     
  18. Periokid

    Periokid Karting

    Oct 19, 2004
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    It is not #8. It is 9. It is true that if this cable is shortened during repair that this fix won't work. Thus my statement to maintain the length.
     
  19. It's Ross

    It's Ross Formula 3

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    Actaully the break near the end could be repaired with only one splice and a new end.
     
  20. 3magic

    3magic Rookie

    Jun 3, 2011
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    Thanks, that is just what I was looking for.
     

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