Re: Race plastic questions
I can't answer your question directaly, but working in the boat buisness I know a bit about fiberglass and have hung a few 'glass bodyworks myself. Fit is purley the design of their mold and since building a mold is time consuming, alot of the cheaper stuff is harder to fit because the molds are not accurate. With the exception of tail sections that are relativly easy to make a plug (plug is the original product that the mold is made around), most race glass is either a copy of someones elses or the stock bodywork with mods. We call that "splashing" a mold off an existing product. You would be amazed at the number of boat builders that do this, especialy with the bottom molds that take time and money to get right, performance wise. How a 'glass bodies feels and performs is based on how it is layed up and with what materials. There are hundred, thousands acutaly, of different fiberglass cloths and mats. Different thicknesses, different weaves, bidirectional, tridirectional, mat of varying cut lengths, etc. Plus you have your other cloths like kevlar, carbon fiber, etc. Each with 100's of different styles. The resin they use mades a difference as well. Traditional fiberglass uses a polyester based resin, but like the cloths, there are many different styles, cure rates, flexabilities, etc. Then you also have your epoxy based resins as well. How nice and durable race glass ends up is based on dozens of factors from material choices to the lay up schedule (how many layers of what cloth), resin choice, to accuracy of the mold itself. So whats the point of all this, I guess that cheaper body work is cheaper because they either are using cheaper materials, fewer layers, or splashed a mold of someone elses bodyworkd and doesnt have to pay off the R&D costs. When talking to these different companies, ask them what materials they are using, how many layers, etc. That will give you domething tangable to compare each other too if you dont have the oppertunity to inspect each product first hand.