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12-14-2016, 10:29 PM | #1 |
Junior Member
Join Date: Aug 2015
Location: Winfield, IL
Posts: 3
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Top Molding Options
I will be installing a new top on the 1930 coupe (45B) that I am restoring. The original moldings were aluminum and are known as F3 for the front and R3 for the sides & rear. They are available as a straight piece for F3 and in coiled form for the R3 style. I have been told that they would be difficult to shape and fit. I'm especially concerned about making the 90 degree bends at the rear corners. An easier option would be to use the "welt-on wire" type but that is not as original. I would like to hear some opinions (based on experience) about the ease or difficulty of working with the original style moldings. Thanks in advance for any comments
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12-15-2016, 02:55 AM | #2 |
Senior Member
Join Date: Nov 2014
Location: Laurel, MS
Posts: 126
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Re: Top Molding Options
I used the welt on wire type and it looks good to me and has held up well. When I restored my top the aluminum mouldings were not available. I tried reusing the original but was never happy with the way it looked. I bought the aluminum mouldings but never installed them for the same reason you stated and the other type looks good anyway.
Hope this helps you decide. |
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12-15-2016, 05:53 AM | #3 | |
Senior Member
Join Date: May 2010
Location: Eastern Tennessee
Posts: 11,520
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Re: Top Molding Options
Quote:
Your opening comment indicates you are restoring a Model-A Coupe. If you are restoring, then my opinion is this means you are trying to replicate it as it originally was. If this is so, then by all mean at least try to use a facsimile of something that it had originally. Order the mouldings and at least try them first. We have installed more than a few over the years, and IMHO they are not overly difficult to do. |
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12-15-2016, 07:00 AM | #4 |
Senior Member
Join Date: May 2010
Location: Lindenhurst, IL
Posts: 792
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Re: Top Molding Options
I use plywood forms fashioned from card stock patterns referenced to the car. This forms the major radii, then contours are fitted by gentle bending the flat of the molding. Get an extra set to practice.
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12-15-2016, 08:51 AM | #5 |
Senior Member
Join Date: Nov 2010
Location: Beamsville,Ontario,Canada
Posts: 482
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Re: Top Molding Options
I just did this on my 30 coupe last week. I designed a bender based on a scaled up version of a Ridgid tube bender. One large plank, one round wood disc with a radius matching the rear corner. Turned it on my lathe with a step or shoulder to keep the moulding flat. One 3/8" bolt and a piece of angle iron for the bending arm. I attached a piece of nylon for the shoe that contacts and slides along the moulding.
It worked out great, on the rear/side moulding,you only have about 2" of length to spare. I managed to make it out of one piece with correct centre to centre distance, but no reason why two pieces would not be acceptable. For me the hardest part was getting the moulding closed evenly. I used #4-5/8" flathead screws instead of nails. The heads are a little too big, #3 screws are what is needed. Oh, very important, I put three 1/16" aluminum flat bar strips in the groove (3/16" width x 1/4" high x 12" long) to prevent the groove from collapsing. I bought the hidem welt as a back up, but didn't need it. Good luck! Ted |
12-15-2016, 06:20 PM | #6 |
Senior Member
Join Date: May 2010
Location: New Jersey
Posts: 734
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Re: Top Molding Options
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12-16-2016, 08:34 AM | #7 |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
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Re: Top Molding Options
Personally, I'd just use Hide-Um-Welt, always looks GOOD.
Vermin has NO rain gutters, only Hide-Um-Welt, looks GOOD & NOBODY even notices it. Bill Simple
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12-16-2016, 01:49 PM | #8 |
Senior Member
Join Date: May 2010
Location: Campbell,CA, USA
Posts: 319
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Re: Top Molding Options
Use your original moldings as a guide and take pictures.
The new aluminum moldings are 6063, "O" temper which is very soft. Install the front molding first (See the Dec 1930 service Bulletins where the same molding is being installed on a Victoria). On a coupe, the side and rear molding is one piece. Either pre-form it or bend it as you install it per the instructions given by others. The side moldings need to be relieved on their underside so that they overlap the front molding by about 3/16 in. Original sealant was like asphalt based wet patch cement. |
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