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Old 04-16-2017, 12:40 AM   #11 (permalink)
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4th gen Camaro/Firebird is like unto the GM EV-1. I was thinking of the actual glass but the contour is a little hard to see, so here's a louvered overlay.


http://www.andysautosport.com/window..._firebird.html

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Old 04-20-2017, 05:03 PM   #12 (permalink)
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Hey everyone,

A quick thank you to FreeBeard, AeroHead, and NeilBlanchard for your input.

Aerohead, regarding the ring-vortex you brought up. Would this be a worthwhile option for an additional accessory "box" with the shape mentioned that could mount to the tailgate? I could fold the tailgate down and attach the box that during long trip. Yet be able to store in the bed when in town (because I'm certain juveniles won't be able to resist tampering with it). Did you ever have problems with people messing with your builds?



Anyways, a quick update on my progress. I finally finished out my senior design project and get to move forward with my life lol. Attached below are two pics of a little progress I made last night on the cab. The hardware cloth seems like it will mold perfectly to my desired shape. There was a minor design change too, I needed more height at the tail to make it practical for my fatbike to go in and out of with the top on.

I'm still debating how to finish out the top lid.. I can't decide if I want to make my own tonno cover to roll down it or an actual hard lid.

The fiberglass and resin arrived and my application plans are to apply 2 layers, use a little bondo as needed to fill the divots, then finish it with 2 or 3 final layers.

Again, thanks for reading and any and all input is appreciated!








Last edited by jviolet10; 04-21-2017 at 10:03 AM..
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Old 04-21-2017, 01:58 AM   #13 (permalink)
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The thing about the Morelli ring vortex is it is 360 with special attention to the wake coming off the back tires. It actually has turbines in the wheels that pressurize slots at the ring. The pickup bed tailgate hinge line falls about the middle of the ring.

[a]erohead has built pneumatically inflated tailgate add-ons. Check his albums.

http://www.boatdesign.net/forums/materials/pet-g-mylar-film-46223.html

I would do 2 or 3 layers of fiberglass, hit it with 80-grit sandpaper, and then do the last coat or two using Mylar. I always though you puddle it and squeegee it out, but the linked article suggests a toothed applicator.

There is some discussion of trapped air bubbles. I'd try pricking the Mylar to let the air out in that case.
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Old 04-22-2017, 12:31 PM   #14 (permalink)
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accessory box

This is the inflatable boat tail which Freebeard mentioned.
It's basically a wooden box which encloses a 12-VDC blower fan which breathes through to a tailored bean-bag envelope,stapled to the perimeter of the box and attached to the tailgate.
It did require a stabilizing spar affixed to the bottom to prevent oscillation.A simple electrical umbilical cord ran under the truck and simply spring-clamped onto the battery terminals during testing.
It's very light and with the 1/2-tonneau and the cargo box in the bed,it gave 5+ mpg at constant highway speed.

The Naughehyde envelope created a square-to-rounded corner transition which kills attached longitudinal vortices and allows for the ring-vortex.
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Old 04-22-2017, 01:58 PM   #15 (permalink)
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Quote:
It did require a stabilizing spar affixed to the bottom to prevent oscillation.


If the box has a lid that hinges at the bottom, that would substitute for the spar.

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