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 12Likes
12-29-2015, 01:13 PM
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CC Member
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Join Date: Aug 2010
Location: Sonora,
CA
Cobra Make, Engine:
Posts: 1,770
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Not Ranked
Tire flat spots
My Cobra isn't getting out much, so I'm ending up with flat spots that require miles of driving to straighten out. (Goodyear Billboards)
Race Ramps Flatstoppers seem to be the only solution, but at $180+ for a set it's worth searching for other options.
Yes, I realize that driving the Cobra more often would help but are there other ways to reduce of eliminate flat spots (due to parking too long)?
Any input will be appreciated.
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12-29-2015, 01:38 PM
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CC Member
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Join Date: Dec 2001
Location: San Diego,
CA
Cobra Make, Engine:
Posts: 2,979
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Not Ranked
Put it up on stands when it won't be used for a while.
__________________
Remember, It's never too early to start beefing up your obituary.
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12-29-2015, 01:39 PM
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CC Member
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Join Date: Dec 2015
Location: Clarksville,
TN
Cobra Make, Engine: Scratchbuild, 289 FIA Replica
Posts: 198
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Not Ranked
Have you tried putting your Cobra up on a lift, or jackstands?
That's how we did it back in the day.
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12-29-2015, 01:55 PM
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CC Member
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Join Date: Aug 2014
Location: Syracuse,
Ny
Cobra Make, Engine: Superformance #2660, FE-406
Posts: 372
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Not Ranked
Roll it up on thick carpet squares. It will substantially reduce the tendancy.
__________________
The older I get, the faster I was.
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12-29-2015, 01:59 PM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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Not Ranked
Or use Avons. They don't flat spot.
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12-29-2015, 02:37 PM
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CC Member
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Join Date: May 2007
Location: Goshen,
ny
Cobra Make, Engine: Gary Edwards Racing 460
Posts: 444
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Not Ranked
Adding pressure to the tires when storing will substantially help.
__________________
Its not the will to win that matters....Everyone has that. Its the will to prepare to win that matters.
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12-29-2015, 04:09 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,005
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Not Ranked
Oh come on. Each weekend, just roll the car two feet forward or two feet back. And I don't mean starting the engine up, just push the damn thing. That takes less than half a minute. If you can't devote three minutes a month to taking care of your car then it's time to sell it.  |
12-29-2015, 04:51 PM
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Senior CC Premier Member
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Join Date: Nov 2004
Location: SoCal,
CA
Cobra Make, Engine: CSX #4xxx with CSX 482; David Kee Toploader
Posts: 3,574
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Not Ranked
Just how many jack stands can you buy for the price of a set of the RaceRamp thingy? More than you need. As said above, either push it back and forth once in a while or just get the Avons and be done with it. Your Billboards will not last long, this I know... 
__________________
All that's stopping you now Son, is blind-raging fear.......
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12-29-2015, 06:03 PM
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CC Member
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Join Date: Aug 2007
Location: Carlsbad,
Ca
Cobra Make, Engine: SPF 2932 with 438 Lykins Motorsports engine. Previous owner of FFR 5452.
Posts: 2,616
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Not Ranked
I have four race ramps flat spot stoppers that I used several years ago to prevent flat spotting. After changing tires, I no longer need them. If you're interested, I will sell them.
FYI, they come in two widths, 10" or 14". I have the wider ones. The 10" models are recommended for tires up to 8" wide. The 14" model is for wider tires. The 14" models sell for around $250 for the set. The 10" set sells for $180.
__________________
Jim
Last edited by jhv48; 12-30-2015 at 08:22 AM..
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12-29-2015, 08:27 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
I'm with Patrick on this one, I do the same thing exactly. If they are old I notice they flat spot more.
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12-30-2015, 12:18 PM
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CC Member
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Join Date: Jul 2004
Location: CONCORD,
NH
Cobra Make, Engine: Gulf GT40 CAV137, Cobra ERA286
Posts: 513
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Not Ranked
Agree with Patrick! I have even softer Hoosiers on my car and they flat spot terribly! To the point that it makes me want to drive the 40 instead. Seriously... the car was undriveable. Then I started moving it back and forth, just pushing, first 180, then 90. a few hours before getting it out. The difference is astronomical! Takes virtually all vibration out of the car. What little there might be rounds out much faster. Great advice!!
__________________
Gulf GT40 CAV137
427 Cobra ERA286
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01-05-2016, 08:41 PM
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CC Member
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Join Date: Dec 2015
Cobra Make, Engine:
Posts: 8
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Not Ranked
Had the same problem and it didn't go away after a couple of miles. If it really bothers you, invest on jackstands.
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01-05-2016, 08:54 PM
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CC Member
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Join Date: Apr 2013
Location: Redding,
CA
Cobra Make, Engine: 1966 Classic Roadster
Posts: 192
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Not Ranked
I think Patrick has some attitude. Rude dude
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01-06-2016, 04:00 AM
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Senior Club Cobra Member
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Join Date: Dec 2001
Location: Shasta Lake,
CA
Cobra Make, Engine:
Posts: 26,597
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Not Ranked
I don't have a problem with flat spotting and the tires on the NASCAR Cobra are the original from 1969. They are bias ply too. I just move it some every week or so and also have treated the tires with some treatment that seems to work well. They are the old Good Year Polyglas tires that came out on the car back then. I also saw a curved sort of pan on rollers that yoiu are supposed to be able to jack the wheel up and put it on them and they are supposed to stop flat spots but I don't know if they work or not as my way is cheaper and doesn't require extra work.
Ron
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01-06-2016, 05:58 AM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,005
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Not Ranked
Quote:
Originally Posted by GregAgrest
I think Patrick has some attitude. Rude dude
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Come on, you don't think that was one of the dumbest posts in recent memory? It's like someone asking "I get a really cold draft coming in through my open window, what should I do?" |
01-06-2016, 01:26 PM
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CC Member
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Join Date: Dec 2015
Location: Clarksville,
TN
Cobra Make, Engine: Scratchbuild, 289 FIA Replica
Posts: 198
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Not Ranked
Quote:
Originally Posted by patrickt
Come on, you don't think that was one of the dumbest posts in recent memory? It's like someone asking "I get a really cold draft coming in through my open window, what should I do?" |
I agree. I didn't think your post was rude at all. Some people are just hyper-sensitive.
News flash, folks. If you don't know how to manage bias ply tires, you shouldn't own them. And it's not like it's friggin' rare and hard to find information. If you can post here, you can search for the answer on the internet.
Intellectual laziness and hypersensitivity abounds in this "microwave, I want it my way and I want it now society."
Put on your big boy panties and take responsibility for your own d*mned car.. |
01-06-2016, 01:29 PM
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CC Member
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Join Date: Dec 2015
Location: Clarksville,
TN
Cobra Make, Engine: Scratchbuild, 289 FIA Replica
Posts: 198
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Not Ranked
Here, since the OP is incapable of looking for himself, is a Google search on "how to stop flat spots on tires"
https://www.google.de/webhp?sourceid...s%20on%20tyres |
01-06-2016, 02:01 PM
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Senior CC Premier Member
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Join Date: Nov 2004
Location: SoCal,
CA
Cobra Make, Engine: CSX #4xxx with CSX 482; David Kee Toploader
Posts: 3,574
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Not Ranked
Quote:
Originally Posted by 120mm
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But it doesn't show how to fix my particular flat-spots on all 4 Billboards after only 200 miles!  All split and rotted while on the car in storage. Unrecoverable and gone forever. Avons now!
__________________
All that's stopping you now Son, is blind-raging fear.......
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01-06-2016, 02:06 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,005
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Not Ranked
... just get a retread. |
01-06-2016, 05:26 PM
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Senior Club Cobra Member
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Join Date: Feb 2007
Cobra Make, Engine: KMP 539, a Ton of Aluminum
Posts: 9,591
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Not Ranked
I agree, Patrick is rude. 
And he makes at least a few large assumptions, which are:
a) rolling your car back and forth will reduce or eliminate the flat spots, since it's highly likely that your Cobra will end up at rest in the exact same spot,
2) the garage door has to be opened and closed, unless you have a Garage Mahal, but first the cars in front of the garage have to be moved in order to get a little rolling distance, the emergency brake has to be released and and reset, so we're talking about a 30-60 minute job, and
ii) if you have a polished aluminum body, then there's another 30 minutes to several hours of re-polishing the areas where you put your oily hands.  |
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