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Old 01-25-2016, 05:33 PM
  #16  
BLACK-BETTY
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Originally Posted by Blu RS
I would question whether removing the rain gutter does not also reduce the structural strength of the roof, particularly in the case of a roll over. How much reduction, I couldn't guess but it seems quite likely regardless. It's significant to note that Ruf's cars with the shaved rain gutters also have an internal roll cage built into his cars. So my point would be that shaving the rain gutters off a 911 would be far more sensible provided a roll cage was also going to be part of the final build.
The rain gutters are three pieces of metal that are simply crimped together. When deleting the rain gutters you seam weld all three pieces. The structural rigidity is thus increased.
Old 01-25-2016, 05:37 PM
  #17  
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Originally Posted by Captain Ahab Jr.
I like them and think the smoothed look goes well with the 964 shape Only question to ask yourself is will you ever want to return your car back to as built as I know one 930 owner who wishes he had never deleted them.
Hi Captain,
I personally think the car looks nicer without them, I like the smooth look , if anything , to me it looks like it has been design a late Friday before going on holidays ....;-)...
It could be a issue with the value when saling, but I think as long as everything is done with some taste it should not devaluate the car, looking at the Ruf cars and other pictures , it hasn't totally transformed the cars...
If it really improve the aero and handling it will be great, it terms of weight there not much to gain as some welding needs to take place,
The biggest concern is:
is it going to weaken the roof and so on , I have no intention of fitting a welded roll bar.
And is it really going to splash water when it rains ...?!
And last thing is the cost , is it really worth the trouble .....
Old 01-26-2016, 04:09 AM
  #18  
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Originally Posted by BLACK-BETTY
The rain gutters are three pieces of metal that are simply crimped together. When deleting the rain gutters you seam weld all three pieces. The structural rigidity is thus increased.
Hi Frank,
Let me understand, so when deleting the gutters it needs to be welded of course ,
therefore you mean the roof become stronger ?
Old 01-26-2016, 04:40 AM
  #19  
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Originally Posted by kos11-12
Hi Frank,
Let me understand, so when deleting the gutters it needs to be welded of course ,
therefore you mean the roof become stronger ?
Yup, thus the whole structure of the car becomes stronger.
Old 01-26-2016, 09:26 AM
  #20  
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Originally Posted by BLACK-BETTY
Yup, thus the whole structure of the car becomes stronger.
I'll second that, there's no way that the gutter spot welds are stiffer than having the whole thing welded!
Old 01-26-2016, 02:00 PM
  #21  
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Originally Posted by porsche mania
I'll second that, there's no way that the gutter spot welds are stiffer than having the whole thing welded!
Welll,....I'd kindly disagree.

The crimped fold is actually more rigid than butt-welding the three pieces together. In most cases, a roll cage is installed to replace the lost stiffness in the roof section.

When Ruf did this, they installed a very cleverly designed and fabricated roll cage above the headliner so its not visible.
Old 01-26-2016, 06:20 PM
  #22  
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Originally Posted by Steve Weiner-Rennsport Systems
Welll,....I'd kindly disagree. The crimped fold is actually more rigid than butt-welding the three pieces together. In most cases, a roll cage is installed to replace the lost stiffness in the roof section. When Ruf did this, they installed a very cleverly designed and fabricated roll cage above the headliner so its not visible.

Hi Steve,
Well , a part from a safety issue ,
by being weaker do you think it will mess with the handling of the car,
Old 02-02-2016, 03:58 PM
  #23  
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Originally Posted by Vandit
Spotted at RUF in Pfaffenhausen when I visited October 2012. I love it.

That looks so right. Just needs 993 door handles...

Originally Posted by Captain Ahab Jr.
I like them and think the smoothed look goes well with the 964 shape...
+1

Old 02-02-2016, 05:42 PM
  #24  
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Lemmas if ever you come across this thread , you re well respected body work wizard here ,
I would much appreciate your opinion ,
Thanks
Old 02-02-2016, 06:23 PM
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Was discussing this with a friend contemplating removing the gutters on his g body... He's done it before, but says the issue becomes weld penetration. No access to properly protect the welds from underneath in the rear fender area. Food for thought
Old 02-02-2016, 06:28 PM
  #26  
Earlydays
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You also lose the "down force" from the windshield edge-gutter
Old 02-02-2016, 06:58 PM
  #27  
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Originally Posted by Earlydays
You also lose the "down force" from the windshield edge-gutter
Well the idea is to lose the drag .
Old 02-03-2016, 04:40 AM
  #28  
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Originally Posted by kos11-12
Lemmas if ever you come across this thread , you re well respected body work wizard here ,
I would much appreciate your opinion ,
Thanks
I've notified Tom/ Lemass of your post. He's done three (IIRC) now, very recently.
Old 02-03-2016, 10:22 AM
  #29  
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He looks really busy at the moment... lots of 964 work!

Some of Lemass' Facebook pics:


Old 02-03-2016, 10:23 AM
  #30  
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Originally Posted by Steve Weiner-Rennsport Systems
Welll,....I'd kindly disagree.

The crimped fold is actually more rigid than butt-welding the three pieces together. In most cases, a roll cage is installed to replace the lost stiffness in the roof section. .
That surprises me Steve, I thought the fact that it's only spot welded would have undone any additional strength of the folded seam. Although I'm sure you'll be much more knowledgeable than me on this sort of thing!


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