1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

vented hood update

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Old 09-21-04, 04:47 PM
  #26  
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Originally Posted by web777
You should bring a few down to Silverlake ( Heeyyyy! ). Seriously, PM me whenever you're down here. Many rotorheads in the area.
^
Old 09-21-04, 07:19 PM
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Originally Posted by MarkPerez
a composite hood is worthless if it's not lighter then a steel hood..
and once again I gotta reply, that's only true of the composite hood is the same shape as the steel hood. The point of making this is for the vents, not to save weight (jeez, I gotta start making that my sig or something. Is it really that hard to understand?)

Anywho, here are some pics of a test skin pulled from the mould. There's no substructure yet, so it's flexed a bit, but gives you an idea of shape & finish.
Attached Thumbnails vented hood update-img_1050.jpg   vented hood update-img_1051.jpg   vented hood update-img_1052.jpg   vented hood update-img_1053.jpg   vented hood update-img_1054.jpg  

Old 09-21-04, 07:41 PM
  #28  
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i like it.... but MOUNT THE MOTHER PHUCKER!!!!! i want to see it on a car man thats sharp lookin
Old 09-21-04, 07:43 PM
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Nicely done Manntis!
Old 09-21-04, 07:49 PM
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Awesome!
Old 09-21-04, 10:05 PM
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that looks sweet, man now I really want one
Old 09-21-04, 10:29 PM
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That's unpainted gelcoat. As a reminder; production versions will be white, not black (easier to paint over)
Old 09-21-04, 10:37 PM
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the gel coat will fill all the minor imperfections (like air bubbles etc) right, so all we'll have to do is sand it down and shoot paint right?
Old 09-21-04, 10:48 PM
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Talking

Very nice, "allright people stand back *reaches into pocket for money* don't crowd the guy!" :-)
Old 09-22-04, 05:22 AM
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Originally Posted by 82transam
the gel coat will fill all the minor imperfections (like air bubbles etc) right, so all we'll have to do is sand it down and shoot paint right?
that's the idea
Old 09-22-04, 09:42 AM
  #36  
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mantis I am interested in what the frame part is designed like. where are the suports placed? I am going ahead and doing with the slant rad. The hood it looks very atractive but I think I may need the leading edge of the vents to be a little farther foward with the slant setup. what is the dim from the front edge of the hood to the front edge of the vent? it would be a shame to get something that nice and end up haveing to cut it up for it to work. go ahead and set it on your car and post the pics. it would look better.
Old 09-22-04, 11:31 AM
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the vents are designed to be right behind the stock fan setup - if you slant your rad forward, they'll be about 6 inches behind the rad.
Old 09-22-04, 12:31 PM
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that is a thing of beauty
Old 09-22-04, 01:14 PM
  #39  
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looks reeeeeeaaaaaalllly good, but ill be honest, this is taking forever (not blamming you, i understand it takes a long time) therefore my funds for this have been spent on other things like brakes (probably more important anyways)

hopefully when you have this thing out ill have some money for it.
Old 09-22-04, 02:36 PM
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mantis how far (whats the dim) front of hood to leading edge of vent?
I am working on the brackets for the slant rad right now.

what does the suport frame for the underside look like?
Old 09-22-04, 04:44 PM
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I think he's shooting for a stock hood sub-structure looking, were the the X-bracing stops at the vents.. at least i would do it that way underside.

and you should know i understand the goal, but hell if it's vents you want, vent the stock hood, oh you want the carbon fibre/vented hood look.. the point of replacing (and many people agree here)a steel part with one made of composite
material is to save the weight. ****, a fibreglass hood should be 16-18 lbs. max.
why would a composite piece weigh as much as metal.. it shouldn't. composites are as strong as metal at half the weight. thats how it came about.. your guy does good work and should have said something about the weight(s) really,i'm not bustin your *****, man. the less weight, the more money saved per hood in materials for the same results. i mean how thick is the top? wait.. your doing the fibreglass in gel-coat and the carbon in resin(s) gel-coat is what weighs the most
and yep. can be sprayed,
Old 09-22-04, 06:55 PM
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3 mat top skin, 2 mat brace layer... but then there's the metal added for the hood latch, hood latch load dispersal plate, hinge attachment plates, and prop rod receiver.
Old 09-22-04, 09:47 PM
  #43  
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i'm sorry man, it's sounding too over engineered, sugar frosted. why mat cloth?
it may be cheaper but chopped strand is much stronger, by design. consider this to help save weight. hinge points : Aluminum, 16 guage, 2 1/2 X 10 inch strip.
drill 2 holes aligned with stock mounting bolts, 2 aluminum nuts, mig,tig weld the aluminum nuts to the strip over the holes. to disburce latch load, a aluminum one piece drop-in box. with latch 'pin' going through the drop-in box for even 'pin' loads.

think about it,, why does every hood have to come with the mounting hardware. some people may not want to mount the hood that way and use hood pins. should be an option. open vents, non-open vents, mounting hardware or without.
that will save you money too.

for the dollors asked for the carbon hoods the sub-structure had better be carbon too, no short cuts using a FPR sub-structure while the top is carbon... right ?
Old 09-22-04, 10:17 PM
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FWIW Mantis, I'm ready to order. You just let us know when you're ready to sell 'em...

Dan
Old 09-22-04, 10:20 PM
  #45  
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you know what i hate sometimes...............myself.
Old 09-22-04, 10:30 PM
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Originally Posted by MarkPerez
i'm sorry man, it's sounding too over engineered
I'm an engineer. It's our nature

Originally Posted by MarkPerez
think about it,, why does every hood have to come with the mounting hardware.
Every other FRP hood I've seen offered on here was a simple fibreglass hood pin affair - no hinges or latch. That's why when I decided to do the vent thing, I went for a bolt-on, hinged design.

Originally Posted by MarkPerez
for the dollors asked for the carbon hoods the sub-structure had better be carbon too, no short cuts using a FPR sub-structure while the top is carbon... right ?
nope. As I've said from the start, the CF one is cosmetic. Only the visible layer is CF - the rest is FRP. 5 layers of CF, the cost of making the mold, etc. doesn't allow me to retail them @ that price, with no idea how many takers there'll be, and not have my accountant try to shoot me.
Old 09-23-04, 11:00 AM
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ok this has probaly been asked before, but im at work and can go searching through forums...can i get a hood with out all of the mounting hardware?

just a suguestion...can you put all of this info on rotorhead.ca? i just feel bad asking questions that may have already been asked....like a composite hood FAQ...im also afraid of repost reprisal.
Old 09-23-04, 11:35 AM
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The mounting hardware is a latch & plate, a metal ring to receive the prop rod, and two strips of metal with incorporated nuts to accept the hinges. These are incorporated in the design of the substructure and, if deleted, would leave an incomplete underside.
Old 09-23-04, 12:58 PM
  #49  
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any newer pictures?

thanks
Old 09-23-04, 01:07 PM
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Really...I can't believe that none of the "Photochop Gurus" have taken a shot at this....


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