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04-27-2010, 03:59 PM
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CC Member
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Join Date: Dec 2004
Location: San Luis Obispo,
CA
Cobra Make, Engine:
Posts: 74
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Not Ranked
Well, I'm not saying for sure it's #44 but it seems to point in that direction. Someone could have changed the numbers or stamped new ones that just happened to be really close. Hopefully we'll find out more info soon.
Arthur, I have the same reservation as you about the time gap but I have a possible explanation. Most of the large material pieces for the frames were ordered pre-cut from the tubing supply company. This simplified the frame building process to the point where a batch of frames (maybe 10) was built in a relatively small time frame (nice pun, huh?)  The frames were stamped with the number when the pieces were loaded in the jig for welding. This would mean quite a few numbers would have similar dates. After a body was fitted, the pair would sit on a rack waiting for a customer or their turn in line to be built. A frame could conceivably have been in the shop for a year or more depending on the sales volume and the time to complete the kit or turnkey. When the supply was low, another batch of frame material was ordered and the process would start again with a new group of dates and numbers.
The point of all this rambling is that if David's car is #44 from 1988, it could have been one of the first cars of the next batch; where Arthur's car #42 may have been one of the last from the previous batch.
Jason
Last edited by n6opv; 04-27-2010 at 04:05 PM..
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04-27-2010, 05:55 PM
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CC Member
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Join Date: Oct 2003
Location: Golden Isles,
GA
Cobra Make, Engine: Butler Cobra. 350 Chevy Engine, blueprinted, heads cc'd, ported, polished, manifolds matched, big valves, 1.6 roller rockers, TB Injected, mild cam, MSD crank trigger electronic ignition. TKO-600 transmission. XKE Jaguar rear. IFS by Fast Cars
Posts: 558
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Not Ranked
I took delivery of mine on the 5th. day of Feb. 1987. so it would make things more clear to know what date #43 has. Hopefully other owners will register and that will answer more questions.
But the date seems to show a time lag and mine could only be the last or second last of a batch. A nice mini-mystery.
So Jason, how is it that you know such details about Ron's batch batch manufacturing of frames? I would have thought he was setup to cut his own steel tubing.
Arthur
Last edited by lal Naja; 04-27-2010 at 10:41 PM..
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04-29-2010, 08:27 PM
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CC Member
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Join Date: Dec 2004
Location: San Luis Obispo,
CA
Cobra Make, Engine:
Posts: 74
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Not Ranked
Quote:
Originally Posted by lal Naja
So Jason, how is it that you know such details about Ron's batch batch manufacturing of frames? I would have thought he was setup to cut his own steel tubing. Arthur
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Simple answer... I was there  I guess I've never really come out and announced it on the forum but then again you are the first one to ask...
I worked for Ron (and Brett and Cindy) from 1990 through to the end in 1998 at the shop in Goleta, CA.
Jason
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04-29-2010, 08:57 PM
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CC Member
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Join Date: Oct 2003
Location: Golden Isles,
GA
Cobra Make, Engine: Butler Cobra. 350 Chevy Engine, blueprinted, heads cc'd, ported, polished, manifolds matched, big valves, 1.6 roller rockers, TB Injected, mild cam, MSD crank trigger electronic ignition. TKO-600 transmission. XKE Jaguar rear. IFS by Fast Cars
Posts: 558
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Not Ranked
Nice to know.
I had the pleasure of meeting Ron in Goleta. He was a gracious host.
And I'm still amazed that he will take time to talk to you when you call. I can't imagine how many calls he gets.
BTW, did you get the two latches for the front of the windscreen. If so take a look at them and you will see that they are slightly different. The slightly smaller one without the casting crosshatch on the back was hand made by me, the main body part that is.
Arthur
Last edited by lal Naja; 04-29-2010 at 09:01 PM..
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04-27-2010, 06:18 PM
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Senior Club Cobra Member
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Join Date: Jan 2008
Location: McAllen,
TX
Cobra Make, Engine: Butler...488" hi-rise, dry-sump FE s/o w/stacks
Posts: 543
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Not Ranked
Makes sense to me.
__________________
Russ
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04-29-2010, 04:08 PM
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CC Member
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Join Date: Sep 2008
Location: Covina,
ca
Cobra Make, Engine: Butler Cobra 347ci 514@6500
Posts: 133
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Not Ranked
More questions to the puzzle
Hi Russ, I was going thru the paperwork that the guy had given me on the date of sale.. In it was a folder which has Plan A, B and C blueprints of the Cobra.
I also have templates to the Handbrake bracket, Front, Rear,and general specs of the Cobra. All Blueprints are listed under Arntz Cobra, But in the front suspension blueprint It shows a much different mount of the shock towers. nothing close to what I have.. I will be framing these since they are in execellent condition.. more questions to answer....
David
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04-29-2010, 08:10 PM
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CC Member
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Join Date: Dec 2004
Location: San Luis Obispo,
CA
Cobra Make, Engine:
Posts: 74
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Not Ranked
Quote:
Originally Posted by Badvnm
Plan A, B and C blueprints of the Cobra... All Blueprints are listed under Arntz Cobra, But in the front suspension blueprint It shows a much different mount of the shock towers.
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David, these are all part of the information packet that would have been sent to potential Arntz customers around 1980 (about the time Arntz went under). They're really nicely done and do show a front suspension that probably never made it to a production car. All the Arntz and Butler cars were originally set up for the MGB front suspension. Even my car, an Arntz Type 4 made a few years later, still has the MGB setup. You'll notice that on the "Plan A" drawing (also from 1980), the plates for mounting the MGB crossmember are shown on the frame.
Jason
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04-30-2010, 06:07 AM
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CC Member
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Join Date: Feb 2009
Posts: 1,696
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Not Ranked
Quote:
Originally Posted by Badvnm
Hi Russ, I was going thru the paperwork that the guy had given me on the date of sale.. In it was a folder which has Plan A, B and C blueprints of the Cobra.
I also have templates to the Handbrake bracket, Front, Rear,and general specs of the Cobra. All Blueprints are listed under Arntz Cobra, But in the front suspension blueprint It shows a much different mount of the shock towers. nothing close to what I have.. I will be framing these since they are in execellent condition.. more questions to answer....
David
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Mine is also a Type 4 and it has Koni shocks on the front. No lever type. Everything else is MGB.
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