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CC Advertisers
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06-19-2008, 06:11 PM
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CC Member
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Join Date: Sep 2006
Location: Tampa,
fl
Cobra Make, Engine: Kirkham #473 427 every option, Keithcraft aluminum FE 482 ci. Mass Flo FI. Tremec TKO 600.
Posts: 260
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Not Ranked
Near Disaster
Just took a spin and felt the car handling strange. Rear left wheel almost came off. I have the newer pin retainer on my hub, spinner was about three threads from off, and yes it passed the retainer???
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06-19-2008, 06:46 PM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Meriden,
CT
Cobra Make, Engine: ERA 427 SC s/n 718, 428 FE
Posts: 1,731
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Not Ranked
You gotta safety-wire those things. Right hand thread on the drivers side, left hand thread on the passenger side.
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06-19-2008, 08:14 PM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Not Ranked
Murphy,
I wonder if the button got stuck somehow for a moment in the down position from dirt, grime??? I can't see how the knock off could go past that button. The design is straight from F1 and it is now the only type locking device they allow.
Maybe a burr? Weak spring?
I certainly want to get to the bottom of this one...fast!
David
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06-20-2008, 05:43 AM
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CC Member
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Join Date: Sep 2006
Location: Tampa,
fl
Cobra Make, Engine: Kirkham #473 427 every option, Keithcraft aluminum FE 482 ci. Mass Flo FI. Tremec TKO 600.
Posts: 260
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Not Ranked
Thanks for the reply David
I took the wheel off and inspected all parts. Nothing damaged? I was on the interstate and the car was all over the place.
The button moves freely. The spinner went past the button for sure. I was but two miles from my house when I first pulled over to look, so I tightened the spinner by hand enough to get it past the button and had to pull over again to retighten by hand as it had gone past the button again. I wonder if I used too much anti sieze?
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06-22-2008, 08:48 AM
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CC Member
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Join Date: May 2006
Location: Exeter,
CA
Cobra Make, Engine: KMP 498
Posts: 495
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Not Ranked
I just put two thousand miles and one track day on may car with the buttons. I would bet it wasn't tight and on when you started. I recomend not mind ####ing it to death- put it on right and get back in the race. Good luck.
__________________
Sanded Aluminum Finish? Because I Can!
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06-22-2008, 10:44 AM
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CC Member
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Join Date: Aug 2006
Cobra Make, Engine: Ex CSX3327, & AK7113 AutoKraft AC MK IV
Posts: 458
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Not Ranked
failing "buttons"
safety wire as a failsafe?
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07-01-2008, 11:39 PM
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CC Member
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Join Date: Sep 2002
Location: Waddell,
AZ
Cobra Make, Engine: Alum bodied CSX4266, fuel injected alloy 472, 663 hp Engine built by Dralle. Suspension by Tom Barnard
Posts: 938
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Not Ranked
Quote:
Originally Posted by JBo
safety wire as a failsafe?
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Agree 100%!
__________________
Don't underestimate the predictability of stupid!
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06-22-2008, 10:44 AM
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CC Member
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Join Date: Jul 2002
Location: Greenville,sc,
SC
Cobra Make, Engine: Kirkham 427 (KMP 266); CAV GT40
Posts: 1,464
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Not Ranked
but isn't that the whole idea of the buttons, to keep the wheel from coming off if it was not tight? If just tightening the spinner is the cure why have a backup safety system?
__________________
SPF Daytona coupe 055, Roush 427R
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06-22-2008, 11:35 AM
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CC Member
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Join Date: Feb 2008
Location: Jacksonville,
FL
Cobra Make, Engine: Kirkham #570 w Shelby FE
Posts: 1,009
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Not Ranked
I guess my question would be does the button move too freely? (compare the tension to one of the others)
Also what does the leading edge of the spinner look like? (too beveled)
If you can post a pic of that lock it would help...
Here's one of mine to compare:
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08-02-2020, 02:31 PM
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CC Member
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Join Date: Jan 2020
Location: La Costa/San Diego,
Ca
Cobra Make, Engine: Kirkham shelby cobra slabside
Posts: 4
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Not Ranked
The pin the hub can fail.
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06-22-2008, 02:12 PM
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CC Member
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Join Date: Oct 2007
Location: roseburg,
or
Cobra Make, Engine: midstates with dual 4 390 aluminium heads msd etc.
Posts: 23
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Not Ranked
beat it good with lead hammer dont be afraid and safety wire 2000 miles on mine no problem!
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06-22-2008, 02:30 PM
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CC Member
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Join Date: Mar 2006
Location: San Marcos california,
CA
Cobra Make, Engine: 1989 KCC from South Africa Right Hand Drive
Posts: 1,605
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Not Ranked
Just looking at the design of that "button" it kind of looks foolproof to me.How can it possibly go past without the button being pushed in by something ,or it was'nt on right in the first place?
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06-23-2008, 09:09 AM
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CC Member
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Join Date: Sep 2006
Location: Tampa,
fl
Cobra Make, Engine: Kirkham #473 427 every option, Keithcraft aluminum FE 482 ci. Mass Flo FI. Tremec TKO 600.
Posts: 260
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Not Ranked
Don't know how?
I took off all of my wheels and inspected them. All of the spring loaded pins function the same and appear undamaged.
The only odd thing was the spinner on the wheel that came lose had a spot about 1/2" long where it was clear that it was rubbing on the pin. There was a slight burr in the thread of the spinner where it appeared the pin crossed into the threads. How the pin compressed and crossed into the spinner threads is a mystery. It did occur while driving on the interstate.
You get plenty of warning as the car was all over the place and I knew there was a problem.
Ronbo, my wheel looks just like yours except I don't have the Kirkham spinner.
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06-23-2008, 09:24 AM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Not Ranked
Murphy,
If you think the knock off is any sort of a problem, I will send you out a new set of our billet knock offs today (burr, too big of bevel, whatever). Just let me know. Let's get to the bottom of this.
David
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06-23-2008, 10:31 AM
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CC Member
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Join Date: Nov 2006
Location: Houston,
TX
Cobra Make, Engine: Superformance SP02228, ROUSH 402R w/custom DiVinci Performance Carb.
Posts: 440
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Not Ranked
Nice Service
David, Nice service!!! I am lucky to have the same attention to service here in Houston with my Superformance shop. Your 289 FIA car is one of my wish list cars.
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06-23-2008, 04:49 PM
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CC Member
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Join Date: Sep 2006
Location: Tampa,
fl
Cobra Make, Engine: Kirkham #473 427 every option, Keithcraft aluminum FE 482 ci. Mass Flo FI. Tremec TKO 600.
Posts: 260
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Not Ranked
 [/IMG]
OK, here is a pic. Looks like possibly the casting that is the spinner has enough of a raised radius to force the push pin in as it rotates? It appears the pin jumped the threads at the highest section of the spinner??? OK NASA guys tell me what really happened..
Last edited by Murphy; 06-23-2008 at 04:53 PM..
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07-30-2008, 08:43 AM
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CC Member
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Join Date: Sep 2006
Location: Tampa,
fl
Cobra Make, Engine: Kirkham #473 427 every option, Keithcraft aluminum FE 482 ci. Mass Flo FI. Tremec TKO 600.
Posts: 260
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Not Ranked
Checking my home mailbox daily...
Quote:
Originally Posted by David Kirkham
Murphy,
If you think the knock off is any sort of a problem, I will send you out a new set of our billet knock offs today (burr, too big of bevel, whatever). Just let me know. Let's get to the bottom of this.
David
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Should I be watching my mailbox? |
06-23-2008, 05:35 PM
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CC Member
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Join Date: Dec 2004
Location: toronto,
ont
Cobra Make, Engine: 408w 500 h.p. 550 ft.lbs
Posts: 562
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Not Ranked
Murphy,
this may sound stupid--- but why don't you take your hammer & try knocking the spinner off ? ( opposite rotation to on )
Maybe the extra pressure will reproduce what is happening when you are driving & force the pin in. Wiggling the wheel around at the same time may help also.
Can't hurt.
The spinner probably wasn't tight to start with, initiating the problem, but it sure would be nice to discover why the safety did not hold.
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06-23-2008, 06:42 PM
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CC Member
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Join Date: May 2006
Location: Exeter,
CA
Cobra Make, Engine: KMP 498
Posts: 495
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Not Ranked
i AM SURE OTHRES HAVE MORE EXPERIENCE WITH KNOCK-OFF:
i HAVE ONLY HAD THREE CARS WITH THEM VARING HP CARS AND I AM A "DRIVER":
If the nuts are tight and the threads are good they do not back off so the little lock thing is not the issue, that simple. If the left and right hand threads are not on the appropriate side- they will come off eventually- saftey wire will not keep a nut that wants to come off from comming off, again that simple. If the nut was backing off against the littel spring thing- you would see damage to the spring thing for sure.
I still think they were not on right in the first place but you should check:
a. Make sure they are on right sides, duh!
b. Make sure threads are not gone- put a stright edge on the hub threads the tops should all be the samjust like a 18-Wheeler axel check. ( my autokraft had this issue-try fixing that ten years ago)
c. Make sure the wheel back flange fits square against the hub.
d. Try to over tighten the spinner- If it were split it will open up- again just like an 18-Wheeler axel nut or any other for that matter.
Good luck- don't let it scare you even if the wheel comes off the most you would end up with is fame on "Youtube" and some expensive bodywork.
If all is right I would swap front to back and go for a spin.
__________________
Sanded Aluminum Finish? Because I Can!
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07-02-2008, 12:20 AM
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CC Member
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Join Date: Aug 2001
Location: Melbourne, Australia,
Vic
Cobra Make, Engine: G-Force Mk I, 5L Windsor, TKO 600, enhanced Jag / Koni suspension & LSD Diff.
Posts: 2,303
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Not Ranked
Reading this one with interest.
Why don't you swap spinner sides and see if it recurs on the other wheel, then you know its the spinner not the safety latch??
Know sort of what it feels like, swapped a dirty spare on a 4WD once and as the mud on the backside of the whell fell out this allowed the tyre to then move. It was the missus that called me to say tyre has nearly fallen off with only 2 of 6 wheel nuts still just in place.
Fortunately not your average missus driver and she can pick up on these things!
Good luck.
__________________
slowy
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