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CC Advertisers
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06-01-2003, 07:03 AM
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CC Member
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Join Date: Jul 2002
Location: Jeffersonton,
VA
Cobra Make, Engine: FFR MKII, 427W- Paxton SC
Posts: 11
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Not Ranked
Poster Car for Driveshaft Safety Loops
Well after only about 2100 miles my driveshaft front yoke let loose and I learned why a safety loop is so important in these cars! My wife and I were just cruising at about 60 mph when the front yoke snapped. Luckily we weren't hurt but I hate to think about what could have happened (especially in a FFR MK I car without a framed tranny tunnel). Hindsight is pretty good though so the repairs will of course include a new safety loop ($30). There's more pictures(and bigger too) of the carnage if you're interested on my build site (didn't want to post them all here)...
__________________
Joe Loyd
Jeffersonton, VA
FFR3588 427W- Paxton SC
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06-01-2003, 07:21 AM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Northport,
NY
Cobra Make, Engine: Kirkham, KMP178 / '66 GT350H, 4-speed
Posts: 10,362
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Not Ranked
Joe.... so glad there was no personal injury.... the sheet metal is easy to replace.
Joe's pictures are a must-see if you do not have a safety loop.
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06-01-2003, 08:26 AM
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Senior Club Cobra Member
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Join Date: Jun 2001
Location: North Metro Atlanta,
GA
Cobra Make, Engine: 2 dr roadster, V-8, 4 spd.
Posts: 2,780
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Not Ranked
Joe, count yourself lucky. Really glad you are OK and all you have to worry about is fixing the car versus human parts!
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06-01-2003, 09:53 AM
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CC Member
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Join Date: Feb 1999
Location: Kansas City,
MO
Cobra Make, Engine: CRL, 351W, Tremec TKO
Posts: 2,299
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Not Ranked
Ouch!
__________________
Pete K.
Who is John Galt?
Last edited by petek; 06-02-2003 at 01:07 PM..
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06-01-2003, 10:11 AM
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CC Member
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Join Date: Jan 2002
Location: Morristown,
nj
Cobra Make, Engine: SPF #623 460/4x2
Posts: 858
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Not Ranked
right click...show picture works
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Dane
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06-01-2003, 10:19 AM
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Senior Club Cobra Member
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Join Date: May 2001
Cobra Make, Engine: A CSX Cobra,1966 GT350 and an '06 Ford Heritage GT
Posts: 1,829
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Not Ranked
Thats awfully low mileage to snap a yoke.....have you checked the pinion angle at ride height to make sure its in proper alignment? You're a lucky guy.....
__________________
"I think we have more machinery of government than is necessary, too many parasites living on the labor of the industrious." Thomas Jefferson
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06-02-2003, 10:53 AM
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CC Member
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Join Date: Mar 2002
Location: so cal,
Cal
Cobra Make, Engine: I used to fix them for a living
Posts: 2,563
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Not Ranked
Thats is one short driveshaft. A driveshaft that short with a live axle rear, seems like any movement of the rear end and the driveshaft angle would be pretty severe.
__________________
In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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06-02-2003, 11:56 AM
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CC Member
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Join Date: Dec 2001
Location: Olympia/Lacey,
WA
Cobra Make, Engine: West Coast. 514 / 6 speed Richmond overdrive
Posts: 1,981
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Not Ranked
My West Coast has an 1/8 inch steel shield
I would not want to bet my hip or leg (or my passengers!) on just a strap ! Make sure you have a steel pan shield too...
__________________
James Madison, father of the Constitution, said, "If Tyranny and Oppression come to this land, it will be in the guise of fighting a foreign enemy." He also said, "No nation could preserve its freedom in the midst of continual warfare..."
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http://www.standdown.net/index.htm
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06-02-2003, 12:25 PM
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CC Member
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Join Date: Mar 2000
Location: Dayton,
OH
Cobra Make, Engine: RCR SLC, Graziano 6-spd, LS3
Posts: 914
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Not Ranked
Re: My West Coast has an 1/8 inch steel shield
Quote:
Originally posted by Back in Black
I would not want to bet my hip or leg (or my passengers!) on just a strap ! Make sure you have a steel pan shield too...
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Driveshaft safety loops are steel:
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06-02-2003, 12:47 PM
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CC Member
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Join Date: Dec 2001
Location: Olympia/Lacey,
WA
Cobra Make, Engine: West Coast. 514 / 6 speed Richmond overdrive
Posts: 1,981
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Not Ranked
Not all...
many in the past have been and I assume still are a fabric strap. Either way I would not rust such a flimsy protection when 600 horsepower is concerned..
__________________
James Madison, father of the Constitution, said, "If Tyranny and Oppression come to this land, it will be in the guise of fighting a foreign enemy." He also said, "No nation could preserve its freedom in the midst of continual warfare..."
~~~~~~~~~~~~~~~~~~~~~~~~
http://www.standdown.net/index.htm
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06-02-2003, 01:12 PM
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Shade Tree Mechanic
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Join Date: Oct 2000
Location: La Plata,
MD
Cobra Make, Engine: - Unique - 302 - 4 spd. -
Posts: 680
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Not Ranked
Re: Not all...
Quote:
Originally posted by Back in Black
many in the past have been and I assume still are a fabric strap. Either way I would not rust such a flimsy protection when 600 horsepower is concerned..
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HUH???? Never seen a drive shaft safety loop made of anything other than steel. And when the time comes when you need the loop, your horsepower issue is moot. 
__________________
- Jim Harding -
- Capital Area Cobra Club -
- Just another day in Cobra Paradise -
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06-02-2003, 01:16 PM
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CC Member
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Join Date: Jun 1999
Location: Michigan,
Posts: 371
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Not Ranked
Generally speaking, the purpose of a hoop is to keep a broken drive shaft from catching in sod, road pothole, crack or curb and pogo sticking you to the moon. If the shaft breaks and parts of it or the yoke act as shrapnel a hoop does little good and a protective steel pan or shield would be your best hope, like a scatter shield. Keep in mind as you nestle your leg alongside your tranny that they have been known to grenade too.
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06-02-2003, 02:15 PM
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CC Member
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Join Date: Jul 2002
Location: rocky river,
Oh
Cobra Make, Engine: Unique 289FIA / SA 351W / a truly glorious machine
Posts: 3,949
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Not Ranked
FFR Cobra replica $36,000
Fantastic paint job 4,000
Driveshaft safty loop - PRICELESS
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06-02-2003, 02:29 PM
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Senior Club Cobra Member
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Join Date: May 2001
Cobra Make, Engine: A CSX Cobra,1966 GT350 and an '06 Ford Heritage GT
Posts: 1,829
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Not Ranked
I second BinB...steel plate all the way 'round to shield you from the driveshaft if it breaks..as happened to jloyd63..and a steel loop to keep it from digging into the ground. Still...a failure like this at 2k miles???????????????????????????????????
__________________
"I think we have more machinery of government than is necessary, too many parasites living on the labor of the industrious." Thomas Jefferson
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06-02-2003, 03:00 PM
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CC Member
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Join Date: May 2003
Posts: 1,313
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Not Ranked
That is an extremely short drive shaft. It looks to be about a foot long.
I am close to the point where my drive shaft has been ordered (19 inches) and I will be putting it in in the next few weeks so this topic is very relevent.
Seems like u-joint angles could have been too high for the load they were given?
I agree with the hoops 100%.
Lone Star has 2 hoops. They loop over top, without a piece below the drive shaft though. One is at each end of drive shaft.
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