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Motorcycle Seat pt 3: Shaping Upholstery Foam // Becky Stern

Motorcycle Seat pt 3: Shaping Upholstery Foam // Becky Stern

Welcome back to my motorcycle seat rebuild
series. In this, the third episode, I’ll show you
how I shaped the upholstery foam that came inside my vintage eBay buy. I’ll put links to the first two episodes
where I take the seat apart and restore the metal seat pan. Don’t forget to subscribe to catch the next
one about sewing a new vinyl seat cover. My main goal here was to lower the standover
height of my bike without sacrificing too much comfort. My seat foam is mostly in tact except for
some moldy parts I’m choosing to ignore. We’ll fill in these cutouts around the strap
fasteners later. The first step is to mark some guidelines
on the foam using a ruler and marker. I marked one line for my first cut, and another
for the beginning of the rounded edge. I made straight roughcuts with a serrated
bread knife, though I’ve also seen folks get great results with electric turkey cutters. I’m saving the bigger slices for filling
in gaps. I got one of these foam razors online, and
used it to even out the rough surfaces and shave down the foam more precisely. Since I’m new at this, I did a lot of the
work with this tool because it didn’t take off too much material at once, so I could
assess my progress easily and frequently. You can always take off more foam, but it’s
harder to put it back if you make a mistake. I didn’t try too hard to get the rusty bits
off the underside, but did a cleanup with a wire brush. The underside of my foam was molded to the
shape of the seat pan so I didn’t want to compromise that shape too much, and the epoxy
primer on the seat pan should keep all that rust out. To join the foam to the seat pan, I used super
77 adhesive. I filled in the gaps where the strap fasteners
were with some small pieces of foam cut from the leftover slices. Thanks so much for watching. Next time we’ll draft a pattern and sew
a new vinyl cover for the seat, then attach it to the bike! Check out my Motorcycle Pinboard and subscribe
to catch future updates in the series.

10 comments on “Motorcycle Seat pt 3: Shaping Upholstery Foam // Becky Stern

  1. Great video; the seat is really coming together nicely! That foam dust looks kind of gnarly, though. Do you have a dust collection system in your apartment shop, or do you find open windows to be enough for projects like this?

  2. Very well done. Have you ever thought about doing a video with car seats? Redoing a '82 & '72 Mercedes and thinking about doing a little extra "re-forming" on the seats. Your shaving and redoing of the motorcycle seat, gave me an a few ideals to hopefully make the seats a little supportive. If you onto some Dodge truck forums and helped those poor soles out with their seats, they would love you for ever. Dodges are notorious for chunks of foam being ripped away from use.

  3. Becky I have searched high and low for one of those foam razors and I can not find one anywhere. Is there another name for it?

  4. I'm working on a Armrest from my 1990 Cadillac Eldorado. The Armrest cover is sent off to the upholstery shop for making a new one. The old cover is torn and cracked from years off wear and sun damage. From the sun damage the foam has took shape of the split material and foam has sunken down. How do I correctly repair the foam is there a filler I can add like spray foam then reshaping. Thank you and I love your motorcycle.

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