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Newbie - Advice needed on Spoiler/Wing mount project please
Newbie - Advice needed on Spoiler/Wing mount project please
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Newbie - Advice needed on Spoiler/Wing mount project please
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robjohnson
robjohnson
posted 12 Years Ago
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Hi there, this is my first post - I am 33 years old Car enthusiast from South London, the car is a Mazda RX7 and my challenge is to fit the rear Spoiler.
The mount needs to be exceptionally stiff and strong, the wing is 1710mm and I estimate it will create extreme forces at higher speeds, therefore its essential that the mounts are extremely sturdy.
I have been thinking and researching about how to fit this wing for over a year looking at examples on pro time attack cars and competition vehicles, most of the solutions I saw were either beyond my engineering skill or ability (CNC/cad etc) or just looked inferior, unprofessional or just plain ineffective.
I decided on composite layup because of the uneven working surface and awkward angles involves, my plan is to lay up carbon by hand - in the photos the Carbon is represented by the Cardboard template I have made up.
I will then release the structure from the car and trim to shape before attaching to the car in final form with bolts, as you can see in the pictures I have the wing uprights (these will be scrapped as the dragon design is a bit lame imo) positioned pretty much where I want them to be - I will use the alloy uprights in the pic as a mold effectively to get the shape of the mount - I plan to make new uprights in Carbon sheet as you can see on the picture of the white car.
I need you guys to help me out with any tips please, I am anticipating a lot of overlap/mechanical locking problems which might stop me releasing the mount, I have no power at the Garage.
I also need some help with the shopping list please, this mount will be subject to downforce of maybe 200kilos but also twisting and tearing forces, my concern is that the resin will crack because of the constant flexing forces.
I am not so bothered about finish as it will be hidden by the boot hatch and the wing upright which will be a carbon sheet made by Carbon mods so will look perfect from the outside - my main concern is strength so what is the shopping list please - do I need Kevlar? what type of CF sheet do I need please.
I also need to move the carbon riveted mounts from the underside of the wing outwards as it was originally designed to mount to a steel boot hatch - my hatch is GRP skin so not at option, my concern is that these mounts are resin infused and therefore much stronger than the hand lay up techniques I have available (no power at the garage) - I dont want to make new mounts with hand lay up and have them shear off at high speed which could cause a hideous accident - tempted to bolt through from the very top of the wing which would be unsightly but possibly the strongest and safest option.
Please review the pics and video and give me some tips, I fixed a bumper with fibreglass from Easy Composites once but that is the only experience I have and I might a right mess of it.
Any comments at all appreciated and thanks in advance for any tips.
Rob
http://s1144.photobucket.com/user/orangefd3s/media/proj2_zps1d7257f4.jpg.html
http://s1144.photobucket.com/user/orangefd3s/media/proj1_zps1a6c00b9.jpg.html?sort=3&o=4
http://s1144.photobucket.com/user/orangefd3s/media/proj_zpsf3908731.jpg.html?sort=3&o=3
http://s1144.photobucket.com/user/orangefd3s/media/proj3_zpsdeb198d5.jpg.html?sort=3&o=2
http://s1144.photobucket.com/user/orangefd3s/media/proj4_zps34a670a4.jpg.html?sort=3&o=1
http://s1144.photobucket.com/user/orangefd3s/media/proj5_zpsc0c34d7a.jpg.html?sort=3&o=0
http://www.youtube.com/watch?v=tmBkfsavSuA
http://s1144.photobucket.com/user/orangefd3s/media/CRAFTCO_zps7feae669.jpg.html?sort=3&o=6
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layup
motorsport
spoiler
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12 Years Ago by
robjohnson
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robjohnson
robjohnson
posted 12 Years Ago
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Thanks Warren, so it looks like the temperature will be a major issue here - ideally by Springtime I want to be on the track not still tinkering.
Looks like I need to mold and work on a mock up mold back at Home, I am confident in making a mold of the car - wax, gelcoat, GRP, release, repeat to get a copy of the working area on the Car in portable form - probably less hassle for me to make the mold than source and chop up a scrap shell right now.
So I need a resin infusion kit too, this intimidates me a little but I need this done and I need it done well - if the item turns out poorly I will get upset and feel negative about the Car in general.
So what do I do then? - get the mold, wax it, lay up CF by hand (tacked in with spots of resin to hold it in place?) stick it all in a seal bag and pump resin through it?
So i need to buy the resin infusion starter kit too right? I geuss its worth doing just for me but also when other people see these mounts they are going to want them too if I do them right so once I have a mold I can knock out a few sets for others ££ pay back the infusion kit maybe.
Thanks
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wojtepanik
wojtepanik
posted 12 Years Ago
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Hi!
Last winter it was so cold in my garage so I had to move to my house with stinky resins and so on. So if you really want you can do this
here i attach some link to gallery where is shown I think the most famous polish drift car which is gt 86 with 1000 horsepower. look closer to the spoiler how it is mounted! it looks really mad! i think that such a mounting point could be easily adapt and reproduced at your purpose with carbon fibre.
http://moto.onet.pl/aktualnosci/toyota-gt-86-orlen-teamu-1000-km-mocy/y9d3s
~~~Everytime I hear sound of demoulding part I have eargasm~~~
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Newbie - Advice needed on Spoiler/Wing mount project please
robjohnson
-
12 Years Ago
You're facing a very similar problem to us with mounting the wing on the xf. I can't help much but...
ajb100
-
12 Years Ago
Apologies for the poor pics, I don't have many pics of it on my ipad. If you continue with the...
ajb100
-
12 Years Ago
Thank you so much for your answer and expertise, really appreciate the help. As you say the area...
robjohnson
-
12 Years Ago
The way you are looking to place the mount, you will be relying on a wide panel gap so there is...
Warren (Staff)
-
12 Years Ago
Thanks Warren, so it looks like the temperature will be a major issue here - ideally by Springtime I...
robjohnson
-
12 Years Ago
Hi! Last winter it was so cold in my garage so I had to move to my house with stinky resins and so...
wojtepanik
-
12 Years Ago
lol - you dont want to put "vacuum pump" into Ebay
robjohnson
-
12 Years Ago
You dont have to infuse it, but you will likely get a better result. Especially if you are making...
Warren (Staff)
-
12 Years Ago
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