Duster Duck Tail

[Ozyduster]

So body on my duster all but finished so time to start fitting the rear duck tail. Obviously straight out of the box looks like needs some love.
Has anyone fitted one and did it require a lot of work or just matter of manipulating when bolting it on.
What style bolts did you use and did you polyurethane on etc
This is what it looks like so would need a nice looking nut head as exposed bolt holes

However i stumbled on this image and thinking no bolts looks so much cleaner. I wonder if its just screwed on with holes smoothed over or made a perfect fit and polyurathaned on?

 

[Syleng1]

There are two styles- screw on (Direct connection made) or glass on (aftermarket fiberglass style)

The screw on I can speak about as I’ve had them and plan on using one on my Demon when it’s completed. You use like a 3/4”-1” self drill self tap screw with a flat Phillips drive head. The head is approx 3/8” diameter in black finish. Pockets are built into the spoiler for the screws. Kinda like the fender extension ls you see on 4x4 trucks with larger tires.

I imagine now there are plenty of other ways to attach them to the trunk lid.

Syleng1

 

[Ozyduster]

There are two styles- screw on (Direct connection made) or glass on (aftermarket fiberglass style)

The screw on I can speak about as I’ve had them and plan on using one on my Demon when it’s completed. You use like a 3/4”-1” self drill self tap screw with a flat Phillips drive head. The head is approx 3/8” diameter in black finish. Pockets are built into the spoiler for the screws. Kinda like the fender extension ls you see on 4x4 trucks with larger tires.

I imagine now there are plenty of other ways to attach them to the trunk lid.

Syleng1

Yep thinking may screw on and then glass over the screw holes for a cleaner look

 

[Syleng1]

Sorry to add- on the pocket style there is a plastic cap and shoulder that goes with the screw. The shoulder goes under the screw head like a washer and the cap snaps on to cover the head. I believe those screws are small head than I advised above.

As for fit and finish… 8 out of 10. Not bad but the factory DC style fit rather good. Not perfect but good. The screws at off angles sometimes pulled them down and off angle. Making lines look off a bit. With pre drilling it helps keep it square to the deck lid.

 

[go-fish]

I have had my Direct Connection spoiler for several months now and come to about three different ways I could attach it.
One idea was to put an adhesive plastic sheet on my painted deck lid and then lay a fiber mat and resin and mold the shape of the trunk. I would mold in strips of aluminum brackets to later affix to the spoiler shell with some hardware on the longer straight edged. In other places the exposed bolts would just be epoxied in. Also molding those really strong magnetic tool holder strips that are at Harbor Freight in the base to make it a magnetic application. After the base cured I would cut big holes in the base where the bracket is so they could be resin or epoxied to the shell.
Another possible method is to find a deck lid for a donor and cut just the skin off the trunk lid and use it as a base. One of my goals was to not cut holes in my trunk but now I don't really care if the spoiler is going to look perfect. I did purchase a trunk lid from a member but I got it home and realized it was an early production Duster lid that had no ridge down the center.
I would also really like to surround the edges of the base with something thick enough to tap holes in, like aluminum or poly. I would just really like to use a nice stainless hardware and have them actually be able to be screwed in.

BTW, the Direct Connection piece had the exposed hardware and the one that was smooth was another company. The Showcars (EBay) piece is more of a Direct Connection copy. It is very rough so you could probably fill the holes in with resin.
I have never worked with fiberglass so it's a learning situation for me.

Here’s some 20 footers. This is just held on by magnets. Just mocked up so I could visualize.

 

[j_anderson]

Why not use double sided 3m tape for automotive? This is how my hood protector is affixed to my Bronco and it's solid as a rock. Is there a flat edge on the underside of the spoiler where it mates to the deck lid?

 

[Oldmanmopar]

You Have the basic mold to work with. They don't fit that good without some trial and error. I had one on a Duster that came on the car when I bought it.

I thought it looked bad with all the bolts. If I would have kept the car I would have fitted it better just setting it on. Then smoothed the outside and made provisions to bolt it on on the under site. You can make them look like they came on the car with some work. I like the second picture above of the charcoal silver car.

Here is a picture of the one on mine , I didn't like the bolts and how warped it looked. With work they can be made nice.

 

[Ozyduster]

You Have the basic mold to work with. They don't fit that good without some trial and error. I had one on a Duster that came on the car when I bought it.

I thought it looked bad with all the bolts. If I would have kept the car I would have fitted it better just setting it on. Then smoothed the outside and made provisions to bolt it on on the under site. You can make them look like they came on the car with some work. I like the second picture above of the charcoal silver car.

Here is a picture of the one on mine , I didn't like the bolts and how warped it looked. With work they can be made nice.

View attachment 1716220520

View attachment 1716220521

Yep agree looks like they need some work as not even sat it on the car yet and can see its got a lot of ins and outs on it. Defiantly want it to look like it grew on the car not just something bolted on. However i think the look i am after with the car it will tie in nicely. As going for that pro street look, originality not really worried about.
Potentially going to see if can get a fiberglass specialist to fit it to make sure its spot on.

 

[YY1]

Mine looked like post #7.
It went on better than I thought it would.
Actually ended up pretty even and centered, and flush.

I used self tapping, 5/16 head fasteners with captive rubber washers.....carefully.
The rubber provides a seal and also gives some leeway when tightening.

 

[go-fish]

Why not use double sided 3m tape for automotive? This is how my hood protector is affixed to my Bronco and it's solid as a rock. Is there a flat edge on the underside of the spoiler where it mates to the deck lid?

No, the ones from Showcars on EBay are just the top shell. No base. It’s very very basic. You’re on your own to come up with mounting.
I’m hesitant to poke holes in my trunk lid so I would like to make a base for the top shell to affix to and then mount the thing , as a whole unit, with magnets or 3M tape.

 

[DionR]

I wish they extended past the edge of the trunk. Or maybe had additional parts that mounted to the quarters to extend it. Just feels unfinished to me.