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  #1  
Old 02-28-2018, 08:49 AM
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Default Rear Backrest Cover

I hope somebody can help me out. I ordered a complete seat cover kit from Mac's for my '59 almost a year ago. I finally got the parts in July of last year. I took everything to an upholstery shop in August to have it installed. I was then told that the rear back rest cover didn't fit - it was approx. four inches too narrow. Everything else fit fine. I have been back and forth ever since with Mac's trying to get a replacement cover. They now want me to send the cover I received back to the supplier (at my expense) and if it was made incorrectly, they will refund the shipping charges. I would rather check things out first. So, if someone who has a squarebird would be kind enough to take some measurements of their rear backrest cover and send them to me, it would be most appreciated. I need to know the width of the cover at the top of the inserts and the width at the bottom as well as the depth from the top of the inserts to the seat level.

Thanks
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File Type: jpg Rear BAckrest cover annotated scaled.jpg (321.2 KB, 74 views)
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Last edited by Howard Prout : 02-28-2018 at 09:43 AM.
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Old 02-28-2018, 10:37 AM
Woobie Woobie is offline
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The two seating area pleated panels fit fine including the center hump ???

There are many measurements that go into forming one of these covers. I was just trying to figure out from your description where the extra material is required.
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Old 02-28-2018, 12:15 PM
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From what I understand the inserts and hump areas fit fine. The problem is that there isn't enough material on the outside edges to reach the edge of the seat. However, it is conceivable that the additional width needs to be divided between the outside edges and the inserts.
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Old 02-28-2018, 12:45 PM
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Howard, I'm working on the seats for my '60 Convert at present. I've saved the rear seat back for last as it seems the most difficult. I'm installing new foams and using vinyl backers instead of burlap. The only dimensions I feel comfortable with are your top to bottom, mine is 19 1/4" in the center of the insert. Across the inserts at the middle I have 5" to the center of the side seam on each side and 12 1/4" at the center (between the inserts at the center).
I've sold a few foam sets and a few seat covers, and many a time I hear that the foam is too big or the cover is not big enough. I always explain that these covers do not just slip on like the Mustang covers, but take some stretching and adjusting, sometimes a little padding is required to make the wrinkles disappear.
On my rear seat back I started with some temporary hog rings to get everything lined up. Take a few days break, come back and stretch again, repeat the process until satisfied. I now have a wrinkle in the list gutter and have to dismantle one section to resolve it. It is a long process, but it can be done.
Carl
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Old 02-28-2018, 01:28 PM
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Thanks for the info, Carl. I took a closer look and the distance between the panel and the side seam is 4 inches on the right and 3 1/2 in. on the left! Also, the distance between the center panels is slightly under 12 inches. The distance top to bottom of the panels is the same as yours.
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Old 02-28-2018, 04:08 PM
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Surely wish I could be of more help. Without attaching the center panels,
if there is no way to get it around the frame, it's more than likely not going to fit.

I could suggest a bunch of photographs to Mac's showing this.

And total lifetime experience doing any upholstery work was on our Squarebird front and back seats. The rear seat bottom was close to what you describe and took days to fit around the frame.
Pre-installed super long tie wraps for the listing rods. Comparing old and new, the new had supersized bolsters around the bottoms and backs. The center hump in the rear was/is so pronounced on the new that it looked like a different car.
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Old 02-28-2018, 06:20 PM
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Howard,
Keep in mind that my cover has been stretched which would make my numbers higher than a flat relaxed piece.
Carl
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Old 03-01-2018, 06:52 AM
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Thanks guys. So is it possible that the cover I have will in fact fit if stretched hard enough over a long enough period of time? How do you go about stretching it? Put it over the frame and just keep tightening it over time? Or is there another way?
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Old 03-01-2018, 08:25 AM
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If you are going to try it yourself, I'd start with a space that could be closed up and heated to and kept about say 85 degrees farenheit. Put your upolstery and frames in the space and let them come up to temperature for a day or two.

Also. Dry fitting the upholstery, or a trial fit, around the bolsters and pleated panels will show you if you need to add foam or cut away some foam.

When I did ours, and this may be totally off the wall, muslin was glued onto the outside of the foam to let the upholstery slide around and make adjustments go smoother. And protecting the upholstery from sharp areas on the frame.

Take all advice with a grain of salt, a second or third opinion. This was the only upholstery experience I've had.
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Old 03-01-2018, 01:32 PM
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Let's put things in perspective. 80-deg F is great to 'work things in' and let the vinyl stretch. Do you really think the guys on the assembly line worked in that kind of temp, especially in winter months? No, they used a fixture that compressed the seats as the covers were hog ringed in place. They used steam to 'iron out' wrinkles.

Howard, send that crap back! You had a professional trim shop reject the cover and by your own measurement, one side is 1/2" wider than the other. That's way too much in 4" and I can see it in your pictures. These vinyl (and leather) parts are supposed to be die-cut or water-jet cut for consistency because they don't make one or two, they make scores at a time to realize a profit. Then, the sewer simply aligns edges and bullet marks as he sews the perimeters. A lot can be revealed by looking at the back side of your covers because that is how they are sewn.

Trim people make minor adjustments to the foam as 'standard procedure'. If your trim shop rejected the covers, they're telling you straight. Send those expensive covers back to their QC dept., and ask for shipping charges. - Dave
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