28Q29U Plymouth Forum

General Category => General Discussion => Topic started by: chetbrz on April 27, 2021, 08:20:33 PM

Title: Just checking
Post by: chetbrz on April 27, 2021, 08:20:33 PM
On the 28/29 sedan the running board moldings are stainless steal.  Is this correct ?
Title: Re: Just checking
Post by: Russ T. Fender on April 28, 2021, 11:47:29 AM
Wow that is a surprise.  On my 30-U the remnants of the running board moulding I had were aluminum but I don't know if they were original although given their condition I doubt they were replacements.   I didn't think they were using stainless steel anywhere on low priced cars that early.  I wish mine were stainless even if it would be incorrect.  The original moulding on a '29 Franklin I had were also aluminum and that was a much higher end car.  I guess that really doesn't mean much since Chrysler was always ahead of the curve and just might have made the switch early on.
Title: Re: Just checking
Post by: Articifer Tom on April 28, 2021, 02:08:29 PM
My Dodge used aluminum , but some Chrysler's used stainless . Accidental ebayed a pieced .
Title: Re: Just checking
Post by: chetbrz on April 28, 2021, 02:15:47 PM
The reason I asked is because I had picked up NOS running boards with original rubber matting.   I thought the moldings were aluminum until I took them apart to polish.  Of course the magnet test wasn't helpful because either isn't magnetic.  When polishing the pieces epically the outer trim was much harder than I would expect aluminum to be.  The pieces buffed up nice but are blotchy in spots.  Before I used something more abrasive I wanted to make sure I wasn't dealing with aluminum or a plated metal.   

I'll have to post some pictures ??
Title: Re: Just checking
Post by: chetbrz on April 28, 2021, 03:07:14 PM
Here is a picture of the front molding and long side.

(http://www.1948plymouth.info/1929/images2/RBMoldings-01.jpg)

This is the unpolished rear side of the front molding.

(http://www.1948plymouth.info/1929/images2/RBMoldings-02.jpg)

Can polish up bright as chrome ??

On the long molding I am a little afraid to polish too deep just in case the item was plated. 

Any suggestions ?
Title: Re: Just checking
Post by: Russ T. Fender on April 28, 2021, 05:19:45 PM
That almost looks like it was plated over brass and those dark spots are where you wore through the plating. 
Title: Re: Just checking
Post by: chetbrz on April 28, 2021, 06:41:12 PM
Maybe these running boards are from a 1929 Chrysler 65.  I think the same body style even the radiator surround is similar. I will check it out more tomorrow.  Been to the eye dr. Today and my eyes are still dilated.
Title: Re: Just checking
Post by: Articifer Tom on April 28, 2021, 07:48:13 PM
if you have both side by side it is easy to tell difference . The ss is thinner and harder . maybe a file to the edge . Your dark spots if alum. can be ware through of anodizing . I can mic both for you tomorrow unless you need tonight .
                            Tom
Title: Re: Just checking
Post by: chetbrz on April 28, 2021, 08:08:47 PM
if you have both side by side it is easy to tell difference . The ss is thinner and harder . maybe a file to the edge . Your dark spots if alum. can be ware through of anodizing . I can mic both for you tomorrow unless you need tonight .
                            Tom

No problem or rush.  Tomorrow is another day.  I will take a file to the edge tomorrow.  I think to heavy for aluminum.  Iíll mic. it also.
Title: Re: Just checking
Post by: chetbrz on April 29, 2021, 09:52:05 AM
Hi Tom,

On both the kick panel side and the outside edge trim I measure 0.028 which is 23 gauge steel or maybe 24 gauge 0.024.  Either way pretty thin but strong and heavy.  I cut a divot on the back end edge with a file.  Shinny metal throughout.  I think its stainless.  The brownish areas in the pictures might be from the garage florescent lights.., in reality dull flat steel color.  I think deeper polishing might correct the blotchy look.   

What is the gauge of the aluminum, Any suggestions ?
Title: Re: Just checking
Post by: Russ T. Fender on April 29, 2021, 05:29:05 PM
The aluminum trim on my car looks to be 0.055 if that helps.  I think that is 15 or 16 gauge
Title: Re: Just checking
Post by: chetbrz on April 29, 2021, 05:41:35 PM
The aluminum trim on my car looks to be 0.055 if that helps.  I think that is 15 or 16 gauge

Thanks for the info. I think the trim is stainless steel.  Next to check if the running boards mount to the car.  Unfortunately lawn work tomorrow.
Title: Re: Just checking
Post by: Articifer Tom on April 29, 2021, 09:25:49 PM
Could not get at an edge of alum to mic . But ss is .030 to .034 or 21 gauge on corner of side where flat . I believe you have ss .
Title: Re: Just checking
Post by: chetbrz on April 29, 2021, 09:43:41 PM
Could not get at an edge of alum to mic . But ss is .030 to .034 or 21 gauge on corner of side where flat . I believe you have ss .

Tom, I think that confirms it.  Not much difference between o.028 and o.030.  +- .005