March 14 event: TAP Plastics and A1 Muffler
Thanks to John and Judy Carter for arranging the presentations for the March club meeting. David Whitehead, from TAP plastics gave an overview of the different resins and fiberglass sheets.
Lee Ennis, owner of A1 Mufflers demonstrated welding a modification to John’s Sprite seats so the seat back would be at a more comfortable angle. We all know how important comfort is to us British sports car owners. Right up there with reliability!
The presentation on fiberglassing discussed different types of resins and their uses. Discussed were polyester laminating resins and finishing resin. The finish coat resin has a wax additive that rises to the surface as the resin cures. The wax will dry smooth and non-tacky. After a light sanding you can paint right over it. Two other more expensive polyester resins are fixatropic, which means that the resin doesn’t sag or run off. It soaks in to the fabric very fast. One of the expensive resins is also fuel resistant. But, according to David, all are good and people choose what they like.
The wax additive can be added to any of the resins. The reason it isn’t in them to begin with is because the wax is used only on the last finish layer. Once the wax layer is cured you can’t laminate another layer on top of it without sanding the layer to get microscopic ridges for the next layer to bond to.
After talking about resins, fillers were discussed. Instead of using Bondo, you can make your own using resin and fillers. The different fillers have different properties. All of the fillers can be mixed together to customize the properties to fit your needs.
After discussing resins and fillers we looked at different fiberglass fabrics.
The interesting fact about the fabrics was the range of different fabrics. Some had fibers pressed together randomly (kind of like press board), others like the image above, were woven. Which you would choose depends on your application. Some work best on flat surfaces, others can be molded to curves.
After the fiberglass presentation we drove over to A1 Mufflers to listen to John discuss how to modify your seats in your Healey so that the backs are sloped back in a more comfortable angle.
The modification basically involves raising the mounting point for the seat back on the seat frame. This is done by cutting the old mount point off and welding an extension between it and the frame.
The image above shows the cut off mount (bright spot in front of J0hn’s right hand), and at the bottom of the image you ca see the top of the other mount point.
The image above shows the other mount point with the extension (the lighter colored metal). By raising the mount point the seat back leans backwards. John said that a half an inch to three quarters is enough.
After describing the modification all that was left to do was to have Lee weld in the extensions:
First one side…
Then the other.
During the welding John gave a glowing testimonial for A1 Mufflers.
There were about 16 club members in attendance and one guest, Greg Paris from Lotus Elites only. Greg was especially interested in the fiberglass presentation and asked some good questions.





















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