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FG spoiler build


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nicholas moffet 
Member - Posts: 26
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Joined: April 17, 2006
Location: United States
Posted: April 17, 2006 at 1:40 AM / IP Logged  

wondering how to build a spoiler / visor for my car out of FG. Here is some  pictures of what I want to do.  Is if hard? and would I be able to do it?. I have worked with fiberglass before and I am pretty good with it but I need to figure out how to get the shape of the spoiler and what would be the best way to do it. Any ideas I would be most thankfull

FG spoiler build -- posted image.

FG spoiler build -- posted image.

hakosuka 
Member - Posts: 37
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Joined: February 21, 2006
Location: Japan
Posted: April 17, 2006 at 6:35 AM / IP Logged  
maybe make it out of foam or mdf. not sure tho. i wanted to do same thing you are one day, hope it turns out nice
mi_what 
Copper - Posts: 208
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Joined: April 20, 2005
Location: United States
Posted: April 17, 2006 at 8:34 AM / IP Logged  
Do they not sell one for you car? If they do it would probably be in your best interest to go with that one. Making something like that might cost less (no more than $100 less though)but it might just be too much trouble to try and build one by yourself.
However, now with that out of the way, I would say your best bet is expanding foam. Just be sure to tape off your car REALLY REALLY well before starting any kind of work whether it be fiberglass or foam. the foam would allow you to make the curves that you want by sanding it down with a high grit paper. After you get the shape you want foil and tape over the foam and begin laying glass down; just be careful about glassing the sides and bottom because if it gets too built up it will no longer fit the car.
Hope that helps you but, by all means don't let this be your answer, I'm sure that other people will come up with more ideas just choose the one that you like best.
crazyoldcougar 
Copper - Posts: 185
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Joined: March 03, 2006
Location: Canada
Posted: April 17, 2006 at 9:10 PM / IP Logged  
i would also use foam...depending on the shape of the glass you may beable to just use a sheet of 1.5" rigid insulation..
Fiberglass Guru.
nicholas moffet 
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Joined: April 17, 2006
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Posted: April 17, 2006 at 10:46 PM / IP Logged  
ya ,its pretty flat really, only a slight curv but doesnt that type of foam get eaten away buy the resion? is it that stuff you can buy at home depot because if it will work than I will try it. Thanks for the info
hakosuka 
Member - Posts: 37
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Joined: February 21, 2006
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Posted: April 18, 2006 at 3:45 AM / IP Logged  
i think you could just cover the foam with foil/tape and glass over that
placid warrior 
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Joined: November 06, 2004
Location: Canada
Posted: April 18, 2006 at 10:08 AM / IP Logged  
use a piece of foam and curve the sides down to the edge of the window...when u get the shape and gap that u want for the underside of the spoiler just tape and foil the thing and glass away. I'm just not sure how that thing is mounted....possibly a good double sided adhesive tape? If u do mount it with the double side tape then u need to make flat spots for the tape to stick to as well as making sure everything is CLEAN when u attach it. u can also make the flat area by leaving a lip on the bottom of the foam that fits flush with the window and then mask the top and bottom of the foam and then wrap the FG around the bottom of it?
torquehead 
Copper - Posts: 144
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Joined: January 15, 2006
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Posted: April 19, 2006 at 12:16 AM / IP Logged  

All good answers there Nicholas.  If you use the sheet foam method, use the blue kind that is closer to the thickness you want.

Cut a template out of the upper portion of the window so you can fabricate a contact section, which is the actual bonding surface to the window.  Lay the template on the foam sheet, trace it, cut the foam out so you have a "plug" that is the U-shape (that is if its the same shape of the car in the picture).  Then make a template for the shape of the upper visor section.  Lay, trace, cut this part out.  Glue/tape the foam parts together the way you intend them to be, and test-fit.  Sand/grind/contour the rough edges or sides down to the desired shape.  Cover the surfaces with foil.  Apply resin, then glass sheet or mat to the top-most section and saturate with more resin, roll it out and let cure.  Turn the part over as if your looking at the mounting surface.  Apply resin to the mating surface, then FG mat (make the mat of this part overlap the other section so that there is a bond of the two.  Lay more resin/FG mat as required to your desired thickness (you can always sand it down a little).  I wouldnt do more than 3 layers since it doesnt support anything other than resist wind flex.  After the part is fully cured, pour laquer thinner, carb or brake cleaner in it to melt the foam away.  Finish the part out with body filler, putty cote, ect...paint it.....attach it with 3M double sided tape....

Ive only fabricated 4 of these for 4 different cars.  What car are you fabricating this for?

nicholas moffet 
Member - Posts: 26
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Joined: April 17, 2006
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Posted: May 10, 2006 at 11:45 PM / IP Logged  

What I did was taped off the top as neatly as possible then layed glass over that.I have cut out the section of the spoiler that will contact the window that is shaped like a U that. i have pictures at http: www.cardomain.com/ride/2123181/3        .My question is what do I do next. The part left over from what I cut I am using as the plug that will give the gap between the window and spoiler. I took the  plug and sprayed foam on it and I will  sand to make the negitive. there is a diagram included to show what I have done so far. If there is a better way or I am doing it wrong please let me know.

crazyoldcougar 
Copper - Posts: 185
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Joined: March 03, 2006
Location: Canada
Posted: May 11, 2006 at 7:03 PM / IP Logged  
first trim and clean up your contact piece...get it to the exact shape you want...personally i would build the plug directly over the contact piece not below it like in your drawing, and shape the final build from there...basically now that the contact portion is finalized..tape it off and build directly over it, then remove the foam and mold the two pieces together..
Fiberglass Guru.
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