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> BUILD-OFF CHALLENGE: Tygaboy's '75 LS3, It seemed a good idea at the time...
djway
post Nov 17 2020, 08:24 PM
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Have you calculated the opening area this design provides you in square inches, compared that to the radiator area and then allow for thermal expansion?
In relation to articulated motorized vents, have you considered getting a Gyro system and using that along with the motorized vents to keep front end lift down? You know this things going to fly (IMG:style_emoticons/default/smile.gif) Elon is having a gyro sale.
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Cairo94507
post Nov 18 2020, 08:12 AM
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V9 looks much better. (IMG:style_emoticons/default/beerchug.gif)
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tygaboy
post Nov 18 2020, 03:24 PM
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V9 in real life. After working with this "bend-a-vent" design, I think this is about as good a result as I'm going to get. And I think it'll work. I will do a final tweak on the outer edge of the vents where they need to clear the hood support structure. You can see I got pretty close. I'm also going to widen the frame a teeny bit, too.


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tygaboy
post Nov 18 2020, 03:29 PM
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I figured I may as well give a go to an initial mock up of the vent screen. Before you complain about the material, it's all I happened to have laying around. Think "proof of concept". I only had enough mesh to do a few of the openings.

You can see it's a pretty simple set of Z-bends. The fun part will be closing off the "sides" of the screen, at the end of each vent. I'm thinking I'll fab some "walls" that drop vertically from the frame. We'll see.


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tygaboy
post Nov 18 2020, 03:31 PM
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And sorta in place. I will say, the mesh does a nice job of finishing the vents. I'm happy with how this is starting to look.


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Curbandgutter
post Nov 18 2020, 03:46 PM
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LOOKING REALLY GOOD. I like the direction it's going. That screen really adds pop to it. Will you be building ductwork to force the air into those vents or are letting the air into the front trunk and then exhaust out the vents?
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andys
post Nov 18 2020, 04:02 PM
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Very nice work, indeed!
Keep in mind that the screen will restrict some air low, which may be significant depending on your selection.
Again, nice work, and acutely interested in the final design.

Andys
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Cairo94507
post Nov 18 2020, 04:15 PM
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Oh yeah. (IMG:style_emoticons/default/smilie_pokal.gif) That looks great. I like the screening and the idea of closing off the sides. That is a winning design and I bet you will be getting requests for some of those from fellow large HP enthusiasts for their builds. (IMG:style_emoticons/default/beerchug.gif)
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jmalone
post Nov 18 2020, 04:23 PM
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The screen looks great!
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mikey63
post Nov 18 2020, 04:31 PM
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I really like the screen added to the vents...finishes it off nicely!
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djway
post Nov 18 2020, 05:49 PM
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(IMG:style_emoticons/default/smilie_pokal.gif)
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914-300Hemi
post Nov 18 2020, 07:38 PM
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(IMG:style_emoticons/default/smilie_pokal.gif)
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Morph914
post Nov 18 2020, 07:46 PM
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Yes on the screen, looks much more finished, and will keep the critters out. (IMG:style_emoticons/default/aktion035.gif)
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tygaboy
post Nov 19 2020, 07:38 PM
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Another day, another design. I won't bore you with the details other than to say I had to make updates to make the "walls" fit the way I thought they should.
I made a template to get the shape of the hood and shaped the initial outer wall piece accordingly.
Then it was tack it to the frame and see what's what. The wall really adds a more finished look.

Yes, another design update will be happening now that I see how this contraption looks like it's going to fit.

Also, once the walls are in place, I have a nice guide to see exactly where I need to trim the hood. For example, I'll remove more of the support structure so it doesn't show under that outer wall, as it does in the pic. Now to work up the other wall parts and get this whole thing put together.

It's turned out to be a lot of work but it's coming along.


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cali914
post Nov 19 2020, 08:49 PM
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It seems like the screens will work at idle but what about when the car is moving how will the air exit are they like louvers.
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Rand
post Nov 19 2020, 08:55 PM
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I would think the angle of the louvers could make a big difference. Hopefully even creating a low pressure area that will help draw the air out when dialed in.
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horizontally-opposed
post Nov 19 2020, 09:05 PM
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Screens add a really nice visual touch for sure, and the workmanship—as always—is gorgeous. (IMG:style_emoticons/default/wub.gif)
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cali914
post Nov 19 2020, 09:07 PM
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QUOTE(Rand @ Nov 19 2020, 06:55 PM) *

I would think the angle of the louvers could make a big difference. Hopefully even creating a low pressure area that will help draw the air out when dialed in.

That could only happen if their is a low pressure area usually behind the lip which allows the air to get sucked out.
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AZBanks
post Nov 19 2020, 09:27 PM
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Instead of a wall along the inside edge, can you cut the mesh in such a way that you can bend it up at the end to fill the triangular gap?

I'm not thermal or aerodynamic engineer but my thought is the hot air will flow across the relatively flay underside of the hood and the wall you are proposing will disrupt the flow forcing the air to go down to clear the wall and then make a 180 degree turn to go up the wall to exit.
If you replace the wall with mesh, the air has a cleaner exit path.

I expect the effect of the wall will be minimal in the total airflow exiting the vent but it seems an unnecessary disruption.
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live free & drive
post Nov 20 2020, 10:43 AM
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I think you need to go to the Jim Hall school of aerodynamics i.e. yarn, tape and driving.

https://www.youtube.com/watch?v=Z0rXyMwFMUI


I would conjecture the air wants to hit the raised louver perpendicular to the air-flow
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