tag to goose neck conversion

   / tag to goose neck conversion #11  
Very nice work, but that is a heck of a lot of steel.... Our 12t goose was nowhere near that heavily built.
First one I did was for a friend. Used smaller steel. :D
 

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   / tag to goose neck conversion #12  
We used to build a tri axle 18,000 pound trailer . It's neck was made with 8" I beam to match the frame .. It had a simple design and used several gussets and doubler plates where required .
 
   / tag to goose neck conversion #13  
I know this is a rather boring way to figure out what you need, but it sure does work. Go to a place that sells trailers and measure what they have. You can pretend you are looking to buy if that makes them feel better about you nosing around and measuring things. Nothing like seeing how the store bought trailers are made with all that engineering already done.
 
   / tag to goose neck conversion
  • Thread Starter
#14  
The only problem with this is I have called around and the closest one I found is an hour away. Not worth the drive. I just broke down and bought trailer plans for the 26ft gooseneck flatbed.

QUOTE=franklin2;4157231]I know this is a rather boring way to figure out what you need, but it sure does work. Go to a place that sells trailers and measure what they have. You can pretend you are looking to buy if that makes them feel better about you nosing around and measuring things. Nothing like seeing how the store bought trailers are made with all that engineering already done.[/QUOTE]
 
   / tag to goose neck conversion #15  
The only problem with this is I have called around and the closest one I found is an hour away. Not worth the drive. I just broke down and bought trailer plans for the 26ft gooseneck flatbed.

QUOTE=franklin2;4157231]I know this is a rather boring way to figure out what you need, but it sure does work. Go to a place that sells trailers and measure what they have. You can pretend you are looking to buy if that makes them feel better about you nosing around and measuring things. Nothing like seeing how the store bought trailers are made with all that engineering already done.
[/QUOTE]

Too bad. Maybe some guys on here with the gooseneck style can chime in with their experiences using one. If I were converting my trailer, the first thing I would wonder about is clearance over the bed of the truck. How high should you make the frontend go up and over the back of the bed and extend down into the truck?

Do different makes of trucks have different distances from the rear bumper to the center of the rear axle? I wonder how much you should allow for that?
 
   / tag to goose neck conversion
  • Thread Starter
#16  
I have all of the measurement concerning the gooseneck. I got those from a friends trailer. The biggest difference is his is a custom open center hauler. Custom made for boat transport. The thing is about 48 ft long and build like a brick outhouse. My trailer has have the capacity of his so as for the size of the steel I'm still up in the air at the moment. As for the measurements I m good.
 
   / tag to goose neck conversion #17  
I have all of the measurement concerning the gooseneck. I got those from a friends trailer. The biggest difference is his is a custom open center hauler. Custom made for boat transport. The thing is about 48 ft long and build like a brick outhouse. My trailer has have the capacity of his so as for the size of the steel I'm still up in the air at the moment. As for the measurements I m good.

What are you hauling. If it's something hive like a backhoe or a Dozer i don't think your frame is big enough
 
   / tag to goose neck conversion
  • Thread Starter
#18  
It's main purpose is a heavy uniform load of hay. Approximately 300-350 bales at a time.
According to the original manufacturer this trailer the way that it sits is rated for a total combined weight of 21000 pounds. And the frame itself has a max load of 24000 pounds.
 
   / tag to goose neck conversion #19  
the frame itself has a max load of 24000 pounds.
After I built my gooseneck adapter, an engineer friend ran the numbers. He said it was good for 30,000-pounds. I got the beams off Craigs list. They were demoed out of Childrens Hospital in Seattle. They must be an M-shape, but I can't find there size in any of my books.

12-inches tall.
Flange width is 4 1/8-inches.
Flanges thickness is 1/4-inch.
Web thickness is 3/16-inch.
 
   / tag to goose neck conversion #20  
Wondering how much weight is added by this GN conversion.
 

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