Fibreglass Doors Options

[barrym]

All,

I'm considering some of these fibreglass doors for my 914 track car ...

http://www.porsche914fibrglass.com/

seems like a cheap(ish) option for lightweight doors - has anyone used / fitted them before ?

[veekry9]

Making a form,plug,mold and part in GRP/Kevlar/Aramid would require a market for 914 parts like that.
Expensive to tool up,ask any die/mold man working in metal,time and money.
A one off method is also not cheap and the results vary,as seen here,what with the plywood board front fascia look.
I do want to go down that path personally as well,to make more light,and impervious to corrosion.
Some expertise and practical experience in the methods is needed however.
A few links..>>
https://www.google.ca/webhp?sourceid=chrome...mental+aircraft
https://www.google.ca/webhp?sourceid=chrome...am%20automobile
https://www.youtube.com/watch?v=ua48wuTH8us
https://www.youtube.com/watch?v=BJFSXIP6Vw8...B713C2239BF7D60
Cheapest way:The existing doors as plugs.Rough outline,details must be closely followed,returns,and walls,etc.
1)A clean dust free workplace ,well ventilated and illuminated.Use proper safety equipment,rules.
2)remove doors of 914,strip clean and fill holes.Mud it if they'll be discarded later.
3)Parting wax coating topskin of outer panel.All kind of products are available.
4)1st,2nd,3rd gelcoat in epoxy,micro and silica filled,for subsequent finishing of faults.(faults are inevitable)
5)1st and 2nd layers of bi cloth lightweight,tooled for fine resolution of details
6)1 layer of heavy cloth,add texture features for subsequent foam adhesion.
7)Dam the skin and pour high density polyurethane foam to 6-8" thickness,inserting reinforcing mesh or ribs and stringers.
8)Your mold is ready,repeat for all skins.
9)You are now ready to layup your part,vacuum bagging techniques will generate the most acceptable results.
10)Determine the type of cloth and resin to be used for your parts,and what the reinforcing cores will be.
11)Do not be discouraged if the results are foul,start again,having learned the error.
12)Epoxy is less prone to shrinkage,a fault with polyesters,doesn't stink,and is resistant to water ingress.
13)A lot of time and effort,learning and practice to get results of a few kilos overall.
A CF composite monocoque that closely resembles a 914 chassis though,is a possible target. (IMG:style_emoticons/default/idea.gif)
How much time and money do you wish to spend?The GRP industry is replete with many tales of really sharp guys failing.
That there is some risk involved shouldn't deter you,could be a lot of fun,like what John Britten and Sir Jack Brabham experienced.

http://www.compositesworld.com/blog
https://www.google.ca/search?q=composite+ai...ction+kitplanes
http://www.homebuiltairplanes.com/forums/a...od-plane-4.html
https://www.google.ca/search?q=composite+sa...etFyTNiKd2uM%3A

A careful methodical approach,well versed before you begin,makes success more probable,and economical.



A personal Murene-6,a single concept car from France.A rusted 914-4 extracted from the mud is all you need to start. (IMG:style_emoticons/default/smile.gif)
https://www.classicdriver.com/en/article/cl...C3%A8ne-heuliez

http://www.914world.com/bbs2/index.php?showtopic=246444
Art Center School of design methods,foam,clay,glass,computers,and talent.
http://www.allpar.com/cars/concepts/dodge/M4S-Ackerman.html
http://www.allpar.com/racing/joe-pappas-m4s.html

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