Anyone ever seen this before?

[hotrod98]

A friend of mine was visiting the shop today and noticed some strange marks on a Daytona wing that we've stripped.  There are two of these marks on the outside and two on the inside on both uprights. I've never noticed this before on any wing.

[nascarxx29]

Ive seen those marks before on a nascar wing

[A383Wing]

I have those on mine

Bryan

[Dans 68]

I'll play.    I'm guessing that as these marks are on opposite sides of the vertical stabilizer (a guess), and that as the vertical stabilizer is hollow (correct?) the marks are the residual set apart tooling fasteners that were used to establish the gap between the two vertical halves of the stabilizer. Once in the jig the stabilizer would be welded up and the entire stabilizer surface ground to the required finished shape. There appears to be no rotational orientation to the marks. Just a guess....  

Dan

[hemigeno]

They were on my (stock) wing too IIRC.

Vestiges from the casting process??   

[cdr]

all of ya'll are wrong!!!!!!   that wing is junk!!! just send it to me & i will pay shipping 

[WINGIN IT]

Perhaps that's the mark left after it got its smallpox vaccination ... 

[moparstuart]

Perhaps that's the mark left after it got its smallpox vaccination ... 

i got one of those on my shoulder

[hemigeno]

They were on my (stock) wing too IIRC.

Found the pic I was looking for...

[moparstuart]

They were on my (stock) wing too IIRC.

Found the pic I was looking for...

great quality   

[DC_1]

Probably ejector pin marks from the tool. After they are cast and the tool opens up there is action that releases the part.

[hotrod98]

The marks on the outside don't line up with the marks on the inside. And, they don't all have the smallpox vaccine look. The Superbird wing that we just finished a few months back didn't have these marks. Would love to have seen these poured back in the day. I'm sure it has something to do with the casting process.
Were the wings poured as two seperate parts and then welded together?

[DC_1]

This is a injection mould example but its the same idea.

The ejectors release the part after moulding or casting

[odcics2]

DC-93  (the #88 Daytona)  has them.  
The uprights are sand cast.



 

[DC_1]

In sand casting there are something called "Chaplets" that support the core if the casting is hollow. This could be remnants of those 

[Beep Beep Dave]

In sand casting there are something called "Chaplets" that support the core if the casting is hollow. This could be remnants of those 

I worked in an iron foundry for 11 years....thats what it looks like to me too!

Dave

[Daytona Guy]

In sand casting there are something called "Chaplets" that support the core if the casting is hollow. This could be remnants of those 

I worked in an iron foundry for 11 years....thats what it looks like to me too!

Dave

Yes and it should be inlayed and may not be aluminum - if not another blend of aluminum. I can show this to my foundry guy.

Dane

[Davtona]

In sand casting there are something called "Chaplets" that support the core if the casting is hollow. This could be remnants of those 

[nascarxx29]

http://www.wwnboa.org/motw.htm



www.hackettbrass.com



Hackett Brass manufactures a complete line of copper, bronze and aluminum castings in sand, permanent and centrifugal molds. Purchased in 1917 from the Hackett brothers, the foundry is now entering its fourth generation of family ownership and management.

In it's early years our foundry cast repairs for passing lake freighters. They would often pull off of the Detroit River into a canal behind the plant to wait for repairs.

During the Korean War we produced six bronze parts for the navy's Bofors gun. Production schedules required a second shift to allow "regular" work to continue during the day.

Hackett cast the spoiler stanchions for the first Daytona Charger. These were the tall stanchions that held the spoiler well above the roofline for stock car racing. Later we produced a shorter version for the street charger.

Other special casting include the dedication plaques on Detroit's McArthur Bridge and a 30-foot map of Michigan located on a plaza in Lansing, Michigan.

Hackett Brass management averages over 20 years per man of foundry experience. Our experience is what we did yesterday, this knowledge will help you tomorrow

[odcics2]

A friend of mine was visiting the shop today and noticed some strange marks on a Daytona wing that we've stripped.  There are two of these marks on the outside and two on the inside on both uprights. I've never noticed this before on any wing.

How many original Daytona wings have you seen?    Maybe there is differences when they were produced?   

Some horizontal stabilizers are solid and some hollow.   Could be more of the same...