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Here are the 1956 values for the F-350 Dual Rear Wheel Model. I don't know if they were much different for 1955.
Maximum Payload Weight (includes the body and whatever you're hauling): 5975 lbs
Maximum Gross Vehicle Weight (the maximum vehicle total weight): 9800 lbs
I'm not sure if this is true, but I was told that they included the body in the payload weight because the frame and drivetrain could be fitted with different body styles (express bed, stake bed, etc.). By including the body in the payload weight, they only had to specify one weight for the frame and drivetrain to cover all the different body models. Of course, that means the owner has to figure out how much the body weighs to know how much stuff can be loaded on in addition to the body.
I think you can estimate the curb weight (frame plus body weight) as:
9800 lbs - 5975 lbs + body weight = 3825 lbs + body weight
Take a WAG at the body weight - say 2000 lbs? That gives you:
3825 lbs + 2000 lbs = 5825 lbs curb weight
That seems low if the max gross vehicle weight is 9800 lbs. Seems like you could load 4000 lbs more stuff, or 2 tons.
If you think the body weighs 4000 lbs, then you get
3825 lbs + 4000 lbs = 7825 lbs curb weight
That leaves about 2000 lbs for stuff, which is close to the 1 ton rating of the truck. You can always drive it on a scale to actually measure the GVW with the truck unloaded.
Here are the numbers for the 1956 panel. It looks like they are identical to the F-100, since that is the drivetrain/chassis on which the panel was built.
Maximum Payload Weight (includes the body and whatever you're hauling): 2050 lbs
Maximum Gross Vehicle Weight (the maximum vehicle total weight): 5000 lbs
Same calculations as for the F-350 would apply. I really don't know what the body weighs for a panel, though.
George, you've made me lose the faith, I thought you had every fact known to man at your fingertips in minute detail...
I'm for sure gonna get it weighed as soon as it's back on the road. My goal is to have it road worthy again by 4/1 or I'm an April Fool!
Curb Weight (using maximum weights from booklet "1955 Ford Truck, Illustrated Facts and Feature Manual"):
F250 = 3452
F100 = 2932
Difference is 520.
Add that to the F250, 3452+520 = 3972lbs. Since my truck no longer has the stake bed I am inclined to a lower rather then a higher estimate.
Given the load capacity of the F250 and using payload estimate we get,
3448-1900=1548 for body weight.
This yields a weight of 3972+1548=5520lbs
However I am not sure whether the Ontario Government will accept an estimate to change over the ownership :-( Now whether they define curb weight to be excluding the body, like the manual does, I am not sure.
It seems silly that they want curb weight and not gross weight, imo.
I would guess they want curb weight because that tells them the theoretical "damage" to the roadway (Is your registration fees based on weight?). Often the only time gross weight is considered is on commercial use registrations. Our private use registration fee is based on a flat fee so they only ask for weight figures on commercial plates which fees are based on gross weight. An interesting insite for those who tow trailers on US interstates: Commercial vehicle plates cannot exceed the registered gross weight INCLUDING trailer, whereas a vehicle registered as a recreational vehicle can tow ANY weight trailer without penalty.