Another tip- don't buy from fiberglast. Most of what they sell is hugely overpriced and all of their private label stuff is just other products relabeled. For example, their system 3000 epoxy resin is just aeropoxy. $200 a gallon from fiberglast, $140 a gallon everywhere else. I buy fabrics for wet layup from soller composites.
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I'm working on the bottom part of the trunk
https://www.miataturbo.net/attachmen...ine=1462408492 And if anyone was wondering what I do for a living, well I worked for one of the biggest composite tooling company in the US (Marine Concepts/JRL Ventures). Now I make Carbon Fiber and Kevlar/fiberglass boats for Barker Boatworks Vacuum Infusing A Fiberglass/Kevlar deck (from today) https://www.miataturbo.net/attachmen...ine=1462408492 Foam core about to go down over the Kevlar https://www.miataturbo.net/attachmen...ine=1462408492 Just done Carbon Hull https://www.miataturbo.net/attachmen...ine=1462408492 |
I made a hood with the headlight covers built into it (since the head lights no ,on get exist).
I used normal twill weave set (2x2?) top and bottom, 411 x 2 layers and then a 3mm core. it came up very stiff, and I have track tested it several times. I also only only did the top of the hood, so there is no bracing and no hinge mounting points. |
Mmmmmm Barker. Beautiful boats. How'd the performance of the boat with the 7marine and a tower turn out?
Sorry for going off topic |
Originally Posted by unk577
(Post 1329476)
Mmmmmm Barker. Beautiful boats. How'd the performance of the boat with the 7marine and a tower turn out?
Sorry for going off topic |
Subscribed. I've got a fiberglass 1/2 bumper front air dam I need to make a mold of so I can make me some more in carbon fiber. Been struggling with how exactly to make the mold and flanges. I'm thinking I need to separate the air dam from the rest of the front bumper but I worry that it will not be rigid enough if I do that. I think originally they may have taken a splash while the entire front bumper was mounted to the car. I also need to get all the vacuum bag stuff like bags, connectors, etc. for my vacuum pump. I'd also like to try my hand at vacuum infusion process at some point.
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Originally Posted by freedomgli
(Post 1330673)
Subscribed. I've got a fiberglass 1/2 bumper front air dam I need to make a mold of so I can make me some more in carbon fiber. Been struggling with how exactly to make the mold and flanges. I'm thinking I need to separate the air dam from the rest of the front bumper but I worry that it will not be rigid enough if I do that. I think originally they may have taken a splash while the entire front bumper was mounted to the car. I also need to get all the vacuum bag stuff like bags, connectors, etc. for my vacuum pump. I'd also like to try my hand at vacuum infusion process at some point.
https://lh3.googleusercontent.com/Y4...=w1475-h830-no |
Oh, I never paid you for the kevlar. Im not in a rush, just let me know when you have the total with shipping and send me a PM.
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Originally Posted by freedomgli
(Post 1330673)
Subscribed. I've got a fiberglass 1/2 bumper front air dam I need to make a mold of so I can make me some more in carbon fiber. Been struggling with how exactly to make the mold and flanges. I'm thinking I need to separate the air dam from the rest of the front bumper but I worry that it will not be rigid enough if I do that. I think originally they may have taken a splash while the entire front bumper was mounted to the car. I also need to get all the vacuum bag stuff like bags, connectors, etc. for my vacuum pump. I'd also like to try my hand at vacuum infusion process at some point.
Post your DIY Aero - Time Attack Forums |
Originally Posted by Tim_Aus
(Post 1329359)
I made a hood with the headlight covers built into it (since the head lights no ,on get exist).
I used normal twill weave set (2x2?) top and bottom, 411 x 2 layers and then a 3mm core. it came up very stiff, and I have track tested it several times. I also only only did the top of the hood, so there is no bracing and no hinge mounting points. |
I wanted to see if anyone has worked with Spread Tow Carbon fiber. I was woundering if I could use 2 layers of 160gr/m with a 1/4 honeycomb use for a trunk could be doable
http://www.easycomposites.co.uk/#!/f...ain-weave.html |
Originally Posted by aidandj
(Post 1330751)
How much did it weigh?
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Originally Posted by y8s
(Post 1330686)
KYLE please come buy / take my roll of fiberglass matte to make your molds. It is clogging up my basement.
Originally Posted by 1993ka24det
(Post 1330750)
Is it partly stock bumper with added air dam? maybe post #3 might inspire you
Post your DIY Aero - Time Attack Forums |
Originally Posted by freedomgli
(Post 1331910)
Yes, sir! Absolutely! What flavor beer do you accept as payment? Maybe I can swing by sometime this weekend?
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This what I mostly work with 1800 18oz/yard 0,+45,-45 triaxial. It is a good structural for things like splitters, floors etc...
https://www.miataturbo.net/attachmen...ine=1464053573 It is also used in the BMW i3 and i8. you can see it in the door sills http://i526.photobucket.com/albums/c...pskyhudbps.jpg |
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Wow that looks like great material.
I have a hobby ski press and would love to find some of that triax. Any idea what it runs per yard? And can you get 10 yard quantities? PM me if you'd like to share your source; no one I deal with carries stitched 18oz carbon... Man and that foam core for the boat... do you cnc mill the entire core? Some random pics: https://www.miataturbo.net/attachmen...ine=1464104175 Urethane moat pour in the core https://www.miataturbo.net/attachmen...ine=1464104175 https://lh3.googleusercontent.com/-X...0/IMAG0503.jpg |
Originally Posted by leboeuf
(Post 1333897)
Wow that looks like great material.
I have a hobby ski press and would love to find some of that triax. Any idea what it runs per yard? And can you get 10 yard quantities? PM me if you'd like to share your source; no one I deal with carries stitched 18oz carbon... Man and that foam core for the boat... do you cnc mill the entire core? We have a outside company cut our foam kits, but I can't remember from a book but i think a piece of 1/4 core makes the laminate 70X stiffer What kind of materials are you using now? Multiaxials | PRF Composites and some other places for other types of carbon Composite Reinforcement Fabrics : Carbon Fiber Panels/Sheets, Fabric/Cloth, COLORED Carbon/Kevlar, Composite Envisions http://www.easycomposites.co.uk/#!/f...-reinforcement http://www.sollercomposites.com,carbon fiber,carbon fiber sleeve,Kevlar sleeve, fiberglass sleeves,carbon fiber fabric,epoxy,west system epoxy,nitrile,gloves,nitrile gloves,aramid,fiberglass,kevlar,tape,biaxial tape, biaxial sleeve |
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Here is a new radiator shroud for my aerocatch latch conversion. Its a 1/16th balsa core layed up wet with 5.7oz twill and envelope bagged with a stack on either side. I won't get a nice glossy surface this way but I will get maximum resin extraction:
https://www.miataturbo.net/attachmen...ine=1464188607 |
I have been trying to come up with a plan to make a high quality hood without going the prepreg route- The materials cost on a prepreg hood is huge and you would need a 60" wide roll which is generally more expensive/harder to find than a 50" roll. I want to do wet layup and I don't want to do infusion. I also want to make the part as light as possible and extract the maximum of resin that I can out of the part.
My current plan looks like this: Two layers of 5.9oz 2k twill vac bagged and cured. After curing, lay nomex honeycomb into the mold and one additional layer of carbon. Vac bag again. I think this will work well since I can get maximum resin extraction on each half of the part while still getting a glossy tool surface. Suggestions for a resin? Carbon in the sun + engine bay heat means it needs to be higher temp than most RT cure epoxy. I have been using aeropoxy and am looking at pro-set. The hood is too big for my oven so I would need something I can RT cure and then do some crude post cure on using either a polycarbonate/wood box and the sun, or some light bulbs/heat gun setup. The pro-set Lam135/224 combination lists a TG of 223f with post cure but the work time on that is marginal for a part so big. I don't want to deal with handling vinylester or polyester resins in my attached garage. |
Originally Posted by asmasm
(Post 1334480)
I have been trying to come up with a plan to make a high quality hood without going the prepreg route- The materials cost on a prepreg hood is huge and you would need a 60" wide roll which is generally more expensive/harder to find than a 50" roll. I want to do wet layup and I don't want to do infusion. I also want to make the part as light as possible and extract the maximum of resin that I can out of the part.
My current plan looks like this: Two layers of 5.9oz 2k twill vac bagged and cured. After curing, lay nomex honeycomb into the mold and one additional layer of carbon. Vac bag again. I think this will work well since I can get maximum resin extraction on each half of the part while still getting a glossy tool surface. Suggestions for a resin? Carbon in the sun + engine bay heat means it needs to be higher temp than most RT cure epoxy. I have been using aeropoxy and am looking at pro-set. The hood is too big for my oven so I would need something I can RT cure and then do some crude post cure on using either a polycarbonate/wood box and the sun, or some light bulbs/heat gun setup. The pro-set Lam135/224 combination lists a TG of 223f with post cure but the work time on that is marginal for a part so big. I don't want to deal with handling vinylester or polyester resins in my attached garage. |
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