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DG Rider has been thinking about doing some sound deadening to his Pioneer. I decided to do some testing for him on this subject.
I did some general durability testing of a couple options for sound deadening on the Pioneer.
I compared 3M undercoating 08881 (black) against Plasti Dip (gunmetal grey)
Each were tested on plastic. Each was only applied in 1 coat. Each was allowed to dry for 4 hours.
The undercoating went on very nicely in an easy to achieve thick coat. The coat was a lot thicker than the Plast Dip. If I was only going to do one coat of something. It would be the undercoating. It looked a lot better than the single coat of Plast Dip.
3M

Plasti Dip

My abrasion testing was, from left to right. A metal fork slid across the surface with just it's own weight. A pretty jagged rock drug across the surface with a moderate pressure. Tapping the surface with the nose of a 40 cal bullet very aggressively 10 times, and finally, a piece of wood dowel about the size of a finger, jammed into the surface and drug across.
3M

Plasti Dip

My conclusions are that the undercoating was more durable in each test, but the wooden dowel.
In my opinion , the undercoating was still a little wet, and with its textured surface, the wood was able to grip it. I don't expect that would happen when dry.
DG Rider asked a question about if undercoating was able to stick well to plastic, so I did a second test on the undercoating alone.
I coated this hard plastic lid for testing.

I put it in a plastic bag with some 40 cal bullets and a a few coarse and sharp rocks. I then held the cap firm in my hand and shook the bag vigorously so that the items inside would be forced against the undercoated surface. To simulate a rock or heavy debris flung up by a tire.

I did two rounds in the bag of 30 seconds each. This is what the cap looked like in the end.

My conclusion is, that undercoating would be the best choice. I think the textured nature and thickness of coats would be far superior in sound deadening and general resistance to damage.
I did some general durability testing of a couple options for sound deadening on the Pioneer.
I compared 3M undercoating 08881 (black) against Plasti Dip (gunmetal grey)
Each were tested on plastic. Each was only applied in 1 coat. Each was allowed to dry for 4 hours.
The undercoating went on very nicely in an easy to achieve thick coat. The coat was a lot thicker than the Plast Dip. If I was only going to do one coat of something. It would be the undercoating. It looked a lot better than the single coat of Plast Dip.
3M

Plasti Dip

My abrasion testing was, from left to right. A metal fork slid across the surface with just it's own weight. A pretty jagged rock drug across the surface with a moderate pressure. Tapping the surface with the nose of a 40 cal bullet very aggressively 10 times, and finally, a piece of wood dowel about the size of a finger, jammed into the surface and drug across.
3M

Plasti Dip

My conclusions are that the undercoating was more durable in each test, but the wooden dowel.
In my opinion , the undercoating was still a little wet, and with its textured surface, the wood was able to grip it. I don't expect that would happen when dry.
DG Rider asked a question about if undercoating was able to stick well to plastic, so I did a second test on the undercoating alone.
I coated this hard plastic lid for testing.

I put it in a plastic bag with some 40 cal bullets and a a few coarse and sharp rocks. I then held the cap firm in my hand and shook the bag vigorously so that the items inside would be forced against the undercoated surface. To simulate a rock or heavy debris flung up by a tire.

I did two rounds in the bag of 30 seconds each. This is what the cap looked like in the end.

My conclusion is, that undercoating would be the best choice. I think the textured nature and thickness of coats would be far superior in sound deadening and general resistance to damage.