Fixing convertible top bar / elastic? | Page 2 | FerrariChat

Fixing convertible top bar / elastic?

Discussion in '360/430' started by arachnyd, Aug 24, 2020.

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  1. Need4Spd

    Need4Spd F1 Veteran

    Feb 24, 2007
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    #26 Need4Spd, Sep 12, 2020
    Last edited: Sep 12, 2020
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  2. ttforcefed

    ttforcefed F1 World Champ
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  3. EastMemphis

    EastMemphis Formula 3
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    I used them to rebuild the secondary cylinders. FedEx'd them out on a Saturday, got them back (selected $40 FedEx shipping) the following Friday morning by 10:30am. Easy to work with, reasonable folks and they answered all my questions quickly and accurately.
     
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  4. ttforcefed

    ttforcefed F1 World Champ
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    so when everyone references the 10K + costs from ferrari are these the parts being refers to?
     
  5. EastMemphis

    EastMemphis Formula 3
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    I don't know which is the best but I wouldn't hesitate to replace the top canvas myself if I needed it.
     
  6. cpoferrari

    cpoferrari Karting

    Jun 30, 2013
    60
    Warning if the top starts sticking, get the bands changed, don't wait. I procrastinated and eventually a got two puncture holes on both sides of the top. Now I need to replace the top. $15,000 by the dealer $8000 for an after market by a local Ferrari shop. Through this forum I found GAHH who sell tops for $2,200. If anyone has an alternative, in NJ please let me know.
     
  7. ttforcefed

    ttforcefed F1 World Champ
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  8. hessank

    hessank Formula 3
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    ttforcefed: When I saw mine putting a strain on my canvas I immediately bought 4" x 4" patches of black velcro
    and with some additional cloth glue I glued it on to the canvas top from the inside. That was 4 years ago.
    Still holds and protects the top from getting holes such as those.
     

    Attached Files:

  9. ttforcefed

    ttforcefed F1 World Champ
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    Did your top ever stop working?
     
  10. hessank

    hessank Formula 3
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    No. Works great so far.
    Hope I don't jinx myself
     
  11. ttforcefed

    ttforcefed F1 World Champ
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    so the elastic bands prevent the top from developing holes, but if a top does have holes it it doesn't mean the top wont work properly?
     
  12. Apollo 11

    Apollo 11 Karting

    Feb 11, 2019
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    I replaced the elastic bands on mine and I don't see how those holes would prevent the top from working.
     
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  13. Themaven

    Themaven F1 Rookie

    Nov 2, 2014
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    thanks for this very useful knowledge.

    I have my 430 spider serviced by a good Ferrari authorised shop which specialises in classic restorations, older than 430s. I will ask them to replace these elastics. Do I need to specify which ones? I imagine your knowledge is ahead of theirs on this model.
     
  14. ttforcefed

    ttforcefed F1 World Champ
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    thanks for posting - was wondering the same thing
     
  15. EastMemphis

    EastMemphis Formula 3
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    360 and 430 Spider tops are interchangeable.

    I suggest replacing all 14 elastic bands.

    I have the details in the article I wrote after I did it myself. It's really a good DIY project if you're confident about your skills.

    https://www.ferrari360.org/2020/09/capote-elastic-bands-and-more.html

    I went through a total breakdown of the methods, equipment, measurements and materials required. Please ask if I missed something.

    Any decent shop should be able to accomplish this. I would guess they'd charge at least 6 and maybe 10 hours if they haven't done one before. Pretty inexpensive for the amazing improvement in the top's functioning. I lowered my top in front of Home Depot the other day with at least 20 people passing by. Before, I would have been horrified to do that since the top always had a 50-50 chance of jamming. Now, I know it's going to close and hardly even give it a glance (except to verify the bar went where it should!).
     
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  16. colorfull

    colorfull Formula 3
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    @EastMemphis your writeup/blog is spectacular, thank you for pointing me to it! I will definitely be performing this procedure when it starts to warm up here in NJ

    @ttforcefed , as you've likely surmised by my posts so far, yes, it happened on my F430. I got the car in Sep 2020, used the roof when I got it, and when it was delivered to me in Nov and both times worked perfectly. Tried it yesterday and wouldn't go all the way down, I suspect its the elastics on the main bar from what I've been reading. I think it was the fact that it was cold out that made it just enough to not work this time, it was probably iffy since I got it, but I didn't realize it.

    Unfortunately, upon more careful inspection now, I did notice the two vampire bite marks on either side of the roof, so this clearly has not been a perfectly operating roof, I guess I got lucky past 2 times I had tried it.

    Many thanks to all who have contributed to the forums on this issue!!!! and I owe you John for the writeup, you clearly have save me and many others time, and money!
     
  17. ttforcefed

    ttforcefed F1 World Champ
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    I dont know man / i have the vampire holes and never an issue opening and closing the roof.
     
  18. colorfull

    colorfull Formula 3
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    'tis a puzzlement!
     
  19. 328gts1987

    328gts1987 F1 World Champ
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    When the straps start to "un-stretch" the first signs are "dents" in the canvas:

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    This is the time to take care of this problem. However there is a small trick to prevent damage to the canvas without replacement of the straps.
    The straps are lengthem in time and by loop them and using tie-rip you shorten the length by 1 inch/2cm.
    You can reach the straps on both ends by stopping the top halfway and reach between lining and canvas.

    Make a loop in the strap (I could get both hands in) and tie the loop with tie-rip having the loop downward (where the plastic plate is).
    Picture shows location (red) and loop in strap (blue).
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    This can be done without taking the canvas from frame etc. Just by opening top midway.




    The small straps can also stretch. A loop with tie-rip is to tight and therefore I stitched an additional strap (shorter) on top to shorten the length.
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    You can can just reach this small strap again without taking the top apart. Hand stitch both ends of your new strap just before the stitching of the original.
    See pic green:
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    Now the canvas wil not be punched and folds as it should be.

    Took me less than 2 hours and needed only (small) tie-rip's and small piece of strap's.

    End result of small strap stitching (yellow is old/original strap, purple is added new/shorter strap)


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  20. EastMemphis

    EastMemphis Formula 3
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    This is at best a bandaid. The elastics are still shot and may last a few weeks or so until the problem returns. Better to bite the bullet and simply replace them. Would you do that with your underpants or just get another pair?
     
  21. 328gts1987

    328gts1987 F1 World Champ
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    By adding a new strap I don't see this is a bandaid...

    The loop & tie-rip on the long straps are maybe a bandaid but time will tell if/how long it will work. If needed it can be repeated.
    As we say in Holland, there is more than 1 road to Rome... By this posting I was only showing a different road (approach) to the same goal, a working top.

    jm2c
     
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  22. 328gts1987

    328gts1987 F1 World Champ
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    Time has passed and time for recap;
    The add-on small strap is an succes and do not need futher attention.
    However the "loop by tie-back" was sufficient but not long-lasting.

    To improve the "mid-bar" movement backwards during opening (to stow flat into the casing) needs a (small)force.
    As written above, some help this bar to move backwards manually (by asking mrs ;)) during opening.

    I was wondering why this movement must be done by straps? (who wears out)...
    Why not use a small spring? And how to attach this to the mechanism?

    As written before I have made a loop in the strap (to shorten it) using the tie-wrap.
    I have used this loop to attach the spring and made another loop (in the strap) to attach the other end of the spring.
    The spring is now installed paralel to the strap and is "taking over" the stretching and will do so as long as....

    As the spring is attached at the bottom of the strap (not on top/at canvas side) and there is a plastic piece at the bottom/on top of inner lining. Ther is no risk of damaging any fabrics.
    It is 2.0 and will monitor the next few months how it works but already weeks into this fix, it is working perfectly.

    The spring needs to be no longer as 7cm/2" (shorter is possible as you can adjust the distance between loops yourself)
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    This is the spring installed (sorry for the "crapy pics, but it is thight between lining and canvas:
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    The spring is attached above the plastic part (protects the inner lining) and the strap is above the spring (to protect the canvas)

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  23. hessank

    hessank Formula 3
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  24. lkstaack

    lkstaack Formula Junior

    Dec 9, 2020
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    Interesting idea. Aren't you concerned that the spring will chafe the liner or top?

    I recently replaced all my straps (and there are a lot) using East Memphis' guide. I still wonder how long the elasticity will last.
     
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