Attaching A Cover To Your Fiberglass Motorcycle Seat Pan

how to attach cover to fiberglass motorcycle seat pan

There are several ways to attach a cover to a motorcycle seat pan. One common method is to use pop rivets, which involves stretching the cover over the seat pan, drilling holes, and securing the cover with the rivets. Another option is to use glue, such as quality contact cement, to adhere the cover to the seat pan. Some people also choose to staple the cover in place or use a combination of glue and staples. Before attaching the cover, it is important to prepare the seat pan by trimming any excess foam and shaping it with an angle grinder to achieve the desired shape and size. Once the cover is attached, the final step is to upholster the seat, which can be done by the motorcycle owner or taken to an upholstering shop.

Characteristics and Values Table

Characteristics Values
Materials 24 oz. polyester fiberglass resin and hardener, 2 yards 3/4 oz. fiberglass mat, 1/2 yard fiberglass roving or cloth, 3M Paint Tape, Aluminum A/C duct tape, Cardboard, Rubber gloves, Heavy-duty gloves, Face mask, Eye protection, Plastic or Boat Mask, Mold release wax, Car wax, or Bowling alley wax, Mixing cup and stick, Tools for trimming the pan
Preparation Tape off the area, cover with cardboard, cover bike with plastic, put on gloves and wax area with mold release wax
Attachment Methods Pop rivets, glue, screws, staples, push-through doohickies, teeth cut out of the pan, drilling
Tips Make sure your fastening system works before you get your seat upholstered, cut your fiberglass mat for your layers ahead of time, use closed-cell foam to avoid moisture absorption, vinyl is water-resistant

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Prepare the seat pan

To prepare the seat pan, start by deciding on the shape you want for your seat and seat pan. If you are using a stock frame, you can keep the seat hinges and latch. Remove the old foam and cut down the steel seat pan, leaving only the support structure for the hinges and latches.

Next, tape off every section where your seat pan will sit. Use 3M Paint Tape to create a base and protect any paint. Cover wide openings or holes with cardboard to make the bottom smooth and flat. Then, use A/C aluminium tape to carefully tape over the 3M tape. Cover the bike with plastic to protect it from resin splatter.

Put on gloves and wax the area with mould release wax, applying about 3-4 coats. You can use bowling alley wax or car wax. Cut your fiberglass mat for your layers ahead of time, making it slightly larger than needed. You will need at least 3-4 layers of the mat, so cut a few short strips as well.

Now, you can start forming the fiberglass shell over the seat pan. Cut out the loop and cut a 3/8" plywood seat bottom in the shape you want. Add the structure for the back bump and cover the whole thing with fiberglass cloth. Apply thin coats of Bondo, sand it, and paint to hide the cloth pattern.

Finally, attach the fiberglass shell to the steel structure. You can use rivets or small bolts to secure it.

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Use glue or cement

If you want to attach a cover to a fibreglass motorcycle seat pan, one option is to use glue or cement. This method is recommended by professional upholsterers and can be used on steel, aluminium, and fibreglass bases.

Firstly, you will need to prepare the seat pan by stripping any paint, gluing the foam, and trimming the foam to size. You can use industrial-strength contact cement, such as shoe cement, to attach the cover to the base. Make sure to use the brush-on type, not a spray, and apply two coats to the material side, with the first coat acting as a primer.

Alternatively, you could use a strong glue such as Gorilla Glue. One source suggests that you can glue the foam directly to the seat pan and then glue the cover on top. However, this method may require additional steps, such as using rivets or Velcro, to hold the cover in place while the glue dries.

Using glue or cement to attach the cover provides a strong and secure bond, but it is important to follow the instructions carefully and ensure proper ventilation during the application process.

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Try pop rivets

When it comes to attaching a cover to a fibreglass motorcycle seat pan, one method you can try is using pop rivets. This can be an effective and quick way to secure the cover in place. Here's a step-by-step guide on how to attach a cover to a fibreglass motorcycle seat pan using pop rivets:

Prepare the Materials and Work Area:

Before you begin, ensure you have all the necessary materials, including a set of pop rivets and a rivet gun. Pop rivets come in various lengths, so make sure you have the appropriate size for your project. It is also recommended to wear safety gear, such as gloves and eye protection, when working with tools.

Stretch the Cover:

Place the cover over the fibreglass seat pan and stretch it medium snug to ensure a smooth and tight fit. This step is crucial to ensure there are no wrinkles or loose areas on the cover.

Drill and Rivet:

Using a drill, create holes in the cover and the seat pan where you want to place the rivets. Drill holes one at a time, and then pop a rivet into each hole. Make sure the rivets are secure and snug. If you make a mistake or want to adjust the tightness, you can always drill out the rivet and redo it. This process will help secure the cover to the seat pan.

Finishing Touches:

Once you have riveted the cover in place, take a step back and inspect your work. Ensure that the cover is stretched evenly and securely attached to the seat pan. If you notice any areas that need adjustment, you can carefully redo the rivets in those specific spots.

Test and Enjoy:

Finally, take your motorcycle for a spin and test out the new seat cover. Enjoy the ride, and feel proud of your handiwork! Remember to share your creation with others in the motorcycle community and seek their feedback.

Using pop rivets to attach a cover to a fibreglass motorcycle seat pan is a straightforward process that can be accomplished with some basic tools and careful technique. Remember to take your time, work in a well-ventilated area, and always follow safety precautions when operating power tools.

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Drill holes

Drilling holes is one method of attaching a cover to a fibreglass motorcycle seat pan. It is important to stretch the cover down medium snug before drilling to avoid any unwanted tightness. Drill the holes and then pop in the rivets. If you do get a rivet too tight, simply drill out the rivet and redo it.

Another method is to use push-through doohickies and 'teeth' cut out of the pan itself. However, this method requires cutting dozens of teeth by hand and the metal will show on the outside edge of the seat cover.

Alternatively, glue can be used to attach the cover to the base. Quality contact cement is recommended, with two coats on the material side, the first acting as a primer.

If you are using foam, you will need to glue the foam to the seat pan, trim the foam, make the cover, and then glue the cover.

If you are using vinyl, you will need to glue it down. Ensure the fibreglass is clean before gluing.

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Upholster yourself or at a shop

You can choose to upholster your motorcycle seat yourself or take it to an automotive upholstery shop. If you're handy with tools and enjoy a challenge, you can attempt to upholster it yourself. This can be a rewarding project, but it requires time and effort. On the other hand, taking it to a professional shop can save you time and ensure a high-quality finish.

Upholstering yourself

Upholstering a motorcycle seat yourself can be a satisfying project, but it requires some knowledge and skill. Here are the steps you can follow:

  • Centre your cover on the foam, if necessary.
  • Staple a few spots that are easy to secure.
  • Work outward from those spots, pulling the cover tight to avoid saggy or wrinkly skin.
  • Use an air stapler, electric stapler, or a manual hand stapler to secure the cover.
  • Check the depth of the staple legs to ensure they don't punch through the cover or foam.
  • Trim the foam, if necessary.

Going to a shop

Taking your motorcycle seat to an automotive upholstery shop is a convenient option. Professionals will have the necessary tools and expertise to ensure a high-quality finish. They can also offer additional services such as foam repair, foam shaping, gel pad insertion, and complete assembly of the seat. This option may cost a few hundred dollars, but it can save you time and provide a more comfortable riding experience.

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