Author Topic: Unzip or not -- that is the question  (Read 991 times)

eric lipper

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Unzip or not -- that is the question
« on: July 28, 2020, 08:57:10 PM »
This is a well-debated topic but I really could not find any discussion about it.  The 69 Convertible has the glass backlight.  Some people say unzip when you put the top down but others say don't worry about it.  What say the experts?
1967 GT500 #2714
2005 Ford GT #157
1999 Ferrari 355 Spyder
1969 Shelby GT500 Conv
1969 XKE Coupe
1965 XKE Convertible
1966 Shelby #889
1963 Corvette Split Window FI
1978 Mustang King Cobra
1984 Aerostar 700P N702RJ
1999 Lear 31A N338CW
1944 Beech Staggerwing N666TX
1955 Beech Bonanza F35 N435W

Bob Gaines

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Re: Unzip or not -- that is the question
« Reply #1 on: July 28, 2020, 09:42:22 PM »
This is a well-debated topic but I really could not find any discussion about it.  The 69 Convertible has the glass backlight.  Some people say unzip when you put the top down but others say don't worry about it.  What say the experts?
By unziping the back glass you lesson the tension put on the glass area while the top is folding.  The tension could possibly cause the silicone strip that divides the two pieces of glass to split apart. A older glass window is especially susceptible to the glass window separating from the the silicone strip.  If you lower the top without unziping the rear glass do so with your fingers crossed for good luck.   
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

eric lipper

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Re: Unzip or not -- that is the question
« Reply #2 on: July 29, 2020, 12:00:52 AM »
Thanks Bob, I always appreciate your insight.  Sounds like I should just unzip it and leave it in the well.
1967 GT500 #2714
2005 Ford GT #157
1999 Ferrari 355 Spyder
1969 Shelby GT500 Conv
1969 XKE Coupe
1965 XKE Convertible
1966 Shelby #889
1963 Corvette Split Window FI
1978 Mustang King Cobra
1984 Aerostar 700P N702RJ
1999 Lear 31A N338CW
1944 Beech Staggerwing N666TX
1955 Beech Bonanza F35 N435W

JWH

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Re: Unzip or not -- that is the question
« Reply #3 on: July 29, 2020, 09:11:11 PM »
With a glass window, I would say unzipping is mandatory. As Bob pointed out, the window will seperate (ask me how I know).   
Jeff

shelbymann1970

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Re: Unzip or not -- that is the question
« Reply #4 on: August 04, 2020, 01:02:14 PM »
This is a well-debated topic but I really could not find any discussion about it.  The 69 Convertible has the glass backlight.  Some people say unzip when you put the top down but others say don't worry about it.  What say the experts?
By unziping the back glass you lesson the tension put on the glass area while the top is folding.  The tension could possibly cause the silicone strip that divides the two pieces of glass to split apart. A older glass window is especially susceptible to the glass window separating from the the silicone strip.  If you lower the top without unziping the rear glass do so with your fingers crossed for good luck.
Thanks. I wish I knew this a year ago.... Gary
Shelby owner since 1984
SAAC member since 1991

mr68shelby

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Re: Unzip or not -- that is the question
« Reply #5 on: October 08, 2020, 11:36:12 AM »
I have now started unzipping my 68 rear window after reading this. My question is can I leave it unzipped? Or is there an easy way for one person to zip it back up? I drive mine a couple times a month and I have not figured out an easy way to get it zipped back up. Thanks! Mike

CharlesTurner

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Re: Unzip or not -- that is the question
« Reply #6 on: October 08, 2020, 12:11:59 PM »
+1 on unzipping the rear window, especially when it's hinged glass.  Also given on advice from friends in the auto upholstery/interior business for many years.
Charles Turner
MCA/SAAC Judge

eric lipper

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Re: Unzip or not -- that is the question
« Reply #7 on: October 08, 2020, 04:49:34 PM »
I unzipped mine and just left it in the well.  I am never driving in the rain and the reason I bought the convertible was for the top down. 
1967 GT500 #2714
2005 Ford GT #157
1999 Ferrari 355 Spyder
1969 Shelby GT500 Conv
1969 XKE Coupe
1965 XKE Convertible
1966 Shelby #889
1963 Corvette Split Window FI
1978 Mustang King Cobra
1984 Aerostar 700P N702RJ
1999 Lear 31A N338CW
1944 Beech Staggerwing N666TX
1955 Beech Bonanza F35 N435W

tim johnson

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Re: Unzip or not -- that is the question
« Reply #8 on: October 08, 2020, 10:28:14 PM »
Put the top halfway up and stop. Go back and zip up window (easy to do because you will have a lot of slack) then complete raising the top.
Always worked for me.