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Old 12-27-2005, 01:22 PM
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diamond plate

I am building a 51 gmc truck and was considering using diamond plate for the bed. I want durability to haul the motorcycle around without the hassle and cost of wood. I was told that bolting aluminium to steel witll cause a corrosion of some sorts. Has anyone had experience with this?

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Old 12-27-2005, 01:30 PM
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I used 1/4" steel diamond plate in my 51 Ford........worked extremlly well and don't have to worry about beating it up. Also adds a bit of extra weigh for better traction.
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Old 12-27-2005, 02:10 PM
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Using two disimilar metals such as steel and aluminum will cause an electrolisis to set up and it will cause corrosion.
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Old 12-27-2005, 04:46 PM
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thanks guys - appreciate the info
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Old 12-27-2005, 09:21 PM
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I'm in the process of putting a sheet of treated plywood in my bed. I may cover it with aluminum diamond plate afterwards.
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Old 12-28-2005, 01:01 PM
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diamond plate

fess-man,

I think Tab has the right idea,I put a sheet of treated
3/4" plywood with steel diamond plate bolted through the
bed on my 82 Chevu pu 9 years ago,it has held up with no
problems.The reason for the plywood is to keep the diamond
plate flat I used stainless flat head screws and will put it
my next truck when this one gives up.
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Old 12-28-2005, 01:10 PM
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I see by the post that you all are using "STEEL" diamond plate. I was hoping to use aluminium as i like the polished finish, but steel and some durable paint might be the ticket.

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Old 12-28-2005, 01:25 PM
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diamond plate

For the hard use my truck gets,aluminum diamond plate is
too soft,steel takes the abuse of heavy skids being slid in
and out with a fork lift.
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Old 12-28-2005, 07:55 PM
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I am an apprentice fabricator at a shop that does a lot of aluminum jobs. When we have to put dissimilar metals together we use backing tape. If we have to install stainless steel carriage bolts to aluminum diamond plate we would put a clear plastic washer in between the two. You cant tell its there but it does its job well. With nothing separating the 2....in no time corrosion will take place around the bolt.
The only reason i don't like the aluminum diamond plate in truck boxes and tailgates is that it scratches so easily, and once its gouged in, the odds are you'll have to learn to live with it. Then again if you just want to haul your motorcycle it might just do the job. One could also have a rubber mat cut to fit over the aluminium when hauling stuff that could scratch the finish.

Mikey
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Old 12-29-2005, 01:19 AM
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I've been tinkering with a little cycle hauler idea too.


I think the aluminum diamond plate will look way better than wood and just need to vision it to make it happen....

Hope you post some pics of your project for motovation
... just a hobby
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Old 12-29-2005, 03:52 AM
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If you put treated plywood in, against metal, I would use some kind of insulator at every contact point. The plywood will move, wearing off any paint that is there. The chemicals in the treated wood will then cause corrosion of the metal. If you do any building with treated wood, you will see that they recommend using galavnized screws or nails with the stuff for that reason.

I would do the same thing if using aluminum.

JMO

Aaron
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Old 12-29-2005, 10:28 AM
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Adtkart, I was curious about the treated wood against metal being a problem. About ten years ago a customer who came to my shop often had some political signs mounted on his pick-up truck made with a treated wood frame. He carried these around for about 3 months and a year later there was HEAVY rust in the areas where the wood rubbed against the metal, far more rust than what you would expect from simply rubbing off the paint. I know different chemicals are used to treat wood and some may be safe but I think it may be a good idea to deal with the possibility before the corrosion has a chance to start because, in this case anyway, the damage was severe. Also what about chemicals leaching out of the wood when it gets wet? Could this be a problem?
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Old 12-30-2005, 03:02 AM
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I had not really thought about that corrosion problem with treated wood until I built the addition on my garage. When I went to buy the truss type metal connectors, I was reading the instructions to find the proper ones to use. There are actually different ones made for the treated wood. That got me thinking back to some trim that I had repaired on my house. Since it was in a moisture problem area, I used treated lumber. I used regular nails and painted it. A couple of years later the boards were coming loose. I pulled them off, thinking that the wood under them was rotten. I found that the nails had rusted away in the treated wood. They were still solid in the boards under that.

I have heard of wood being referred to as "salt treated" and "pressure treated". I don't know if they are one and the same, or are different animals. Maybe that is the problem. Maybe one has chemicals that are corrosive, and the other not. Maybe someone here is in the know on this subject.

Aaron
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Old 12-30-2005, 09:54 AM
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It's either treated wood or never drive it in the rain. My 62, 3/4 ton is going to outlive me. I'm not worried about it.
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Old 12-30-2005, 02:05 PM
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??cost of diamondtread???

If ya'll don't mind my asking, what would the cost be for a piece of the aluminum diamondtread, shiny side up? My youngest son has a '56 chevy pickup we have restored and one of the last things to do is a bed kit or the diamondtread. The alum. sure won't rot like wood will! This is a daily driver so it's not a pampered garage queen and need something that will last! thanks...gary.
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