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Cobra drop arm question


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#1 Pablo

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Posted 01 May 2016 - 12:08 PM

Does anybody know what year Cobra started selling these 1" by .063" drop arms?

 

IMG_1241.JPG


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#2 Steve Deiters

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Posted 01 May 2016 - 01:15 PM

Best answer I could guess is about '67 or '68.  Kind of set off the "drop arm wars" with different manufacturers  that prompted the manufacture of 1 1/8" maybe even 1 1/4" wide arms.

 

Kind of an anachronism now..."drop arms"-the concept and the hardware.  Considered and absolute essential part of chassis design at the time and now never used let alone spoken of. Time and design marched on.....



#3 Howie Ursaner

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Posted 01 May 2016 - 01:18 PM

I am pretty sure it was it was late 67 early 68  when the last inlines were being built. 


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#4 John Streisguth

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Posted 01 May 2016 - 01:25 PM

The first Car Model they seem to appear in is Dec 1968  (I just looked) November 68 they advertise a plate drop arm but they don't say the width and it looks like 3/4".  Dec issue gives 3/4 and 1" options


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#5 MSwiss

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Posted 01 May 2016 - 01:26 PM

My guess also, late 67 or 68.

 

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#6 Pablo

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Posted 01 May 2016 - 01:28 PM

OK, thanks everybody. Given that info, would this be "wrong" if I narrowed and shortened it ?

This build isn't going to be an "exact" replica of anything, just an "Ursaner-inspired-style".

 

IMG_1248.JPG

 

Here is a link to the build it's for, Mike:

 

http://slotblog.net/...-jail-door-car/


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#7 John Streisguth

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Posted 01 May 2016 - 01:45 PM

Go for it...it's not like you're defacing some precious archaeological artifact.   :)


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#8 Pablo

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Posted 01 May 2016 - 02:23 PM

John, are you referring to my chassis, or the drop arm ?  :laugh2:

The drop arm came cheap, but the Pablo chassis has many hours in it.

Done well, the car may have value. Done wrong, it's just another scratchbuilt. :)

 

My question has been answered, thanks everybody :good:


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#9 John Streisguth

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Posted 01 May 2016 - 04:09 PM

The drop arm, of course... :D


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#10 Bill from NH

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Posted 01 May 2016 - 04:28 PM

A .063 K&S brass strip with piano wire & brass tubing to hold the guide flag would also provide a period look.  On eBay, I'll often see a "Champion chassis" advertised when it's actually someone's scratchbuilt that uses a drop arm engraved "Champion" or "Champion of Chamblee.." :)


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#11 Zippity

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Posted 01 May 2016 - 04:48 PM

Why is the rear left corner of the drop arm radiused?



#12 MSwiss

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Posted 01 May 2016 - 05:12 PM

If the drop arm was originally in an anglewinder chassis, probably motor clearance.


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#13 Bill from NH

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Posted 01 May 2016 - 05:14 PM

Ron, it's radiused to clear a main rail bend on the Cobra anglewinder chassis it originally was on. 


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#14 Zippity

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Posted 01 May 2016 - 05:24 PM

Thanks Guys :)



#15 Pablo

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Posted 01 May 2016 - 05:44 PM

IMG_1231.JPG


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#16 tonyp

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Posted 01 May 2016 - 06:08 PM

They came out after inlines.


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#17 dc-65x

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Posted 02 May 2016 - 09:31 AM

The first ad in Model Racing Journal was Nov. '68:

 

MRJ V1N4 p8.jpg


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