Scaled my tow rig

[ovrszd]

I had access to a certified axle scales the other day so did some weighing.

My truck is a 2000 F250, 7.3L Diesel, AT, SRW, Extended Cab, Shortbed, Lariat model, half a tank of fuel.

My trailer is a Neal Brand GN, 28' + 4' dovetail, no ramps, wood deck, dual wheeled 10K Dexter axles, no spare.

Here's my results.

Empty Truck: Front axle 4110lbs. Rear axle 2730Lbs. Total 6840lbs.

Truck and empty trailer: Front axle 4080lbs. Rear axle 3700lbs. Trailer axles 5910lbs. Total 13,690lbs.

Loaded as pictured with two Jeeps: Front axle 4130lbs. Rear axle 4770lbs. Trailer axles 12,290lbs. Total 21,090lbs.

I was surprised by a couple things. First my trailer weight is 6850lbs. At least it's not 9000lbs as some suggested it was. But still heavier than I expected.

Second,I was surprised that increasing the total package weight by 14,250lbs only added 20lbs to the truck front axle??

On the other hand I was pleased that it added 2040lbs to the rear axle of the truck.

I like that the trailer is carrying the majority of the weight which was my goal. It pulls very well loaded as pictured.

For the safety police, internet researching revealed my truck's GCWR at 20,000lbs. So I am 1090lbs overloaded.

Overall I like the balance. I bought this trailer without a dovetail and added it myself. That's why my axles are so far forward. For what I'm doing I like that. Puts a bigger percentage of the weight onto the trailer axles and drastically increases the ability to get into tight spots.

I'm no trailer expert so open to any comments/suggestions.

 

[SLHawkins]

What is the GVWR of the truck, about 9200lbs or so? Which will give you a payload for the truck itself around 3500? So, you have plenty of weight to spare on the axles. Unlike semis, with a sliding 5th wheel, we are not able to shift weight between the front and rear axles. But, with the weight of the diesel engine, the front axle is carrying enough anyway. Although, I think you have 4-6" of positioning to play with for the front jeep, looks like you got them sitting in about the right spots on the trailer. Which is the heavier of the two? Also, how much does your dovetail weigh? That might be your 1090lbs right there. Only this I would recommend is consider adding air bags. It'll help your vehicle carry the weight and smooth the ride out considerably. Bottomline though, I think you are good with it set up as you have it. And, other than dropping the dovetail, I do not see anything you can do about 1090lbs overweight.

 

[Dmace]

Second,I was surprised that increasing the total package weight by 14,250lbs only added 20lbs to the truck front axle?

Now you see why some people still prefer a bumper pull trailer with a weight distribution hitch. If you have the rear axle/suspension capacity, a fifth wheel trailer allows more tongue weight but it goes directly over the rear axle. On a traditional trailer with a WD hitch, the weight is more evenly distributed to both axles of the truck leading to a more balanced overall combination vs a truck and trailer see-sawing on the rear axle.

One more note, check the GAWR (Gross Axle Weight Rating) which should be on your door sticker. I thought those older 3/4 tons were only rated to about 5k lbs. This would put you pretty close to capacity on the rear axle.

It's nice to be able to get real numbers on your setup. That's the first thing I do with a new truck or trailer. :thumbsup:

 

[Rustyiron]

Now you see why some people still prefer a bumper pull trailer with a weight distribution hitch. If you have the rear axle/suspension capacity, a fifth wheel trailer allows more tongue weight but it goes directly over the rear axle. On a traditional trailer with a WD hitch, the weight is more evenly distributed to both axles of the truck leading to a more balanced overall combination vs a truck and trailer see-sawing on the rear axle.

I would be very suprised if a WD hitch got equal or more load on the front axle that his GN does. It seems that most bumper pulls rely mostly on load balance as most have the axles very close to the C/L of the trlr on 2 axle trlrs. with a little bit more on a typ. 3 axle 9 ton that generally are a pintle hitch not avail. with a WD set up.
It just seems unlikely that a WD hitch can compensate for the close to 4' distance from the C/L of the rear tk. axle, to the ball, that is acomplished by a GN trlr. I allways wondered why they don't build the GN trlrs with a longer neck to allow the ball to be 8" or so in front of the rear axle, it would provide more weight to the towing unit's steering axle as well as faster response in steering (usefull backing up).

 

[tractorboy5500]

Now you see why some people still prefer a bumper pull trailer with a weight distribution hitch. If you have the rear axle/suspension capacity, a fifth wheel trailer allows more tongue weight but it goes directly over the rear axle. On a traditional trailer with a WD hitch, the weight is more evenly distributed to both axles of the truck leading to a more balanced overall combination vs a truck and trailer see-sawing on the rear axle.

I would be very suprised if a WD hitch got equal or more load on the front axle that his GN does. It seems that most bumper pulls rely mostly on load balance as most have the axles very close to the C/L of the trlr on 2 axle trlrs. with a little bit more on a typ. 3 axle 9 ton that generally are a pintle hitch not avail. with a WD set up.
It just seems unlikely that a WD hitch can compensate for the close to 4' distance from the C/L of the rear tk. axle, to the ball, that is acomplished by a GN trlr. I allways wondered why they don't build the GN trlrs with a longer neck to allow the ball to be 8" or so in front of the rear axle, it would provide more weight to the towing unit's steering axle as well as faster response in steering (usefull backing up).

I agree with the load being a 4' differnts, it better to have the weight in the middle of the leaf springs instead on the end of the leaf springs, especialy the load you have, having a bp with the same load setup would make you truck set lower than with the gn setup due to the center line loading of the leaf springs. "Hope I said this right."

 

[schmism]

. I allways wondered why they don't build the GN trlrs with a longer neck to allow the ball to be 8" or so in front of the rear axle, it would provide more weight to the towing unit's steering axle as well as faster response in steering (usefull backing up).

Looks to me that his GN has plenty of neck space for his short bed truck.

all he would need to do is reposition the hitch in the truck... so depending on the style of GN he has, it may be easy to do... or not

 

[Dmace]

I would be very suprised if a WD hitch got equal or more load on the front axle that his GN does.

You would be surprised if a WD hitch could put more than 20 lbs of the load to the front axle? Have you ever used one?
It would put a lot more than 1% of the tongue weight to the front axle! I've seen a squatting truck lift 3-4" with a proper WD hitch which easily computes to a couple of hundred pounds.

having a bp with the same load setup would make you truck set lower than with the gn setup due to the center line loading of the leaf springs.

Correct, but that's the whole point of the WD hitch. To "move" the load to the entire truck instead of a foot behind the bumper.

 

[Skyco]

Yes a WD hitch can transfer a LOT of weight to the front....I remember a picture a long time ago of a front drive car with the rear wheels removed, sitting level, to demo how this worked

 

[tractorboy5500]

You would be surprised if a WD hitch could put more than 20 lbs of the load to the front axle? Have you ever used one?
It would put a lot more than 1% of the tongue weight to the front axle! I've seen a squatting truck lift 3-4" with a proper WD hitch which easily computes to a couple of hundred pounds.

Correct, but that's the whole point of the WD hitch. To "move" the load to the entire truck instead of a foot behind the bumper.

True, I havent used a WD hitch that much, they can transfer weight like you said, but then again a person must know the correct way to use it to.

 

[oldtractors]

Did you know that you legally have to have a CDL for that rig? With the dual tandems, your GVW for the trailer is approx. 20,000 + 9000 or so for the truck = 29,000 lbs. You need to have a CDL and follow all the regulations to be legal. Most of the time you will not get caught, but beware the DOT when they are looking for money.

You would actually be MORE legal with a single tired trailer with a GVW of 14,000 lbs. Trailer would be about 1000 lbs lighter as well.