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Rank: Advanced Member
Groups: Member
Joined: 6/21/2012
Posts: 529
Location: N. Cal
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Like other guys have already said it's 20k per axle and you have to take into account the tare weight of the truck and trailer. With my 2x3x2 set up I figure I can gross 220,000 (who orders a T800W without a 20k front axle?  ). The tare weight is probably in the 80,000-85,000 range so this set up should be safe for loads up to 135,000. Now the only problem is it's only a 55 ton Rogers  ... maybe the DoT guy won't notice  . 
My Facebook page: NorCalDiecastCustomsClifton
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Rank: Advanced Member
Groups: Member
Joined: 6/18/2003
Posts: 2,143
Location: Charlotte, North Carolina
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Great looking setup. Did you make the jeeps and out of styrene? Thanks for the pictures. Go ahead and put it in the mail. CAW
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Rank: Advanced Member
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Joined: 3/23/2010
Posts: 701
Location: Washington, DC
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As a guideline, when I was making heavy moves on a weekly basis, we balanced between legality and appearance. Tractors ran between 17,500 to 25,000 depending upon frame, lift axle and transmission. Always ran 3406 or C15 Cats. We had three tri-axle Talberts, a 50 ton flush deck, a sixty ton beam, and a 60 ton wide flush deck. None other the beam were light and the wide deck trailer was 37,000 pounds empty. This last trailer and the beam were structurally capable of hauling a Cat 235D fully dressed with a hammer weighing 117,500. Within the District, we had a blanket permit allowing a 110,000 gross and 10 foot width. The wide trailer was used for short city hauls where the breakdown and loading of the machine otherwise required street closures, etc. but to be legal required both weight and width permits. We were meticulous about being within structural ratings, flagging, and load securement.
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Rank: Advanced Member
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Joined: 4/3/2003
Posts: 2,087
Location: Rockford,IL.
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3406E wrote:Like other guys have already said it's 20k per axle and you have to take into account the tare weight of the truck and trailer. With my 2x3x2 set up I figure I can gross 220,000 (who orders a T800W without a 20k front axle? ). The tare weight is probably in the 80,000-85,000 range so this set up should be safe for loads up to 135,000. Now the only problem is it's only a 55 ton Rogers ... maybe the DoT guy won't notice . Ok, I am going to shoot a hole in your theory. The problem with two axle jeeps, is that they can be overloaded very easily. The way you have the machine sitting you would have approx. 54-60,000 on the two axles, with 45-46000 on the drives and 12-13000 on the steer axle. To keep the jeep at 40K you will have to move the machine back to1' of the trailer tires, and take the stick and bucket off. You can have 100,000 on the trailer, 40000 on the jeep, 40000 on the tractor and around 16000-17000 on the front axle or 196000 gross weight on this set up. At the balance point on the tractor 5th wheel, there is only so much weight that will transfer to the front. With the pusher axle down, you take the weight off the front and not the jeep. I used to drive a Talbert setup like this with a W900. We have a 2 axle jeep with a pusher mounted in front of the tandem axles that we can put down and adjust to 55000 - 60000 and this solves the jeep weight and still puts 40000 on the drives. It looks good on the permit to have 220000, but you will only scale around 196000. Then again, in the model world, it looks great! Ken
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Rank: Advanced Member
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Joined: 6/21/2012
Posts: 529
Location: N. Cal
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Quinella: Yeah the jeep and booster are both mostly scratch built with styrene. kcmtoys: It's nice to have some input from a guy that's actually drove a set-up similar to this. I knew it'd be hard to get an even weight distribution on all axles. I still need to build another gooseneck extension that's the correct length (my measurements were all guesswork on that when I originally built it) which will allow me to get more weight forward. The 5th wheel on this truck sits between the front drive axle and the drop so it'd help get a little more weight forward but still not enough to max a 20k front axle. My main reason for building this was to haul my 330 log loaders around (now my 568s as well). The 220k was just my theoretical max in a hypothetical situation . Even though it's still off a little it's closer then 99% of the other model lowboys out there and like you said, it looks great!
My Facebook page: NorCalDiecastCustomsClifton
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Rank: Advanced Member
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Joined: 11/26/2008
Posts: 2,559
Location: Edmonton, AB
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1 piece, minus the bucket. I know there's a few pictures kicking around of that trailer hauling 1200s, 385s and 657s. 
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