Forum Discussion
Buck50HD
Jan 10, 2014Explorer
I'm certainly not trying to turn a 250 into a 350, just trying to get the facts straight and get a SRW axle with the highest possible rating, regardless of the sticker value.
Ratings are not absolute values. Take for example my F150HD payload of 2171 lb. Someone can go out and buy a standard F150 with no options, 2WD, reg cab and have more payload. But I guarantee if you hooked my 5th up to it, the towing experience will be nothing like the HD payload truck with the stiff suspension and E tires. Just like a 250/2500 with 2000 payload will certainly handle my 5th better with improved safety when compared to my F150HD with 2171 lb rating.
The above info certainly helps although if the housing, spindles and bearings are the same then, being a full floater, the axle shaft diameter won't make much difference. All it's doing is transmitting the drive torque which is no different between the two models. I'd like to think there are other details missing here.
I thought the axle in my F150HD had something significantly better than a base axle but after more reasearch, my opinion has changed. The bearing in the parts book is identical, which is the primary reason I have some concern with it. The housing does have a different part number so the thicker wall tubes may be a fact. As far as the axle diameter and/or design, there may be subtle differences that could dramatically increase ultimate and fatigue strength.
Keep it coming. I don't like to take things for granted and would like to confirm.
Ratings are not absolute values. Take for example my F150HD payload of 2171 lb. Someone can go out and buy a standard F150 with no options, 2WD, reg cab and have more payload. But I guarantee if you hooked my 5th up to it, the towing experience will be nothing like the HD payload truck with the stiff suspension and E tires. Just like a 250/2500 with 2000 payload will certainly handle my 5th better with improved safety when compared to my F150HD with 2171 lb rating.
The above info certainly helps although if the housing, spindles and bearings are the same then, being a full floater, the axle shaft diameter won't make much difference. All it's doing is transmitting the drive torque which is no different between the two models. I'd like to think there are other details missing here.
I thought the axle in my F150HD had something significantly better than a base axle but after more reasearch, my opinion has changed. The bearing in the parts book is identical, which is the primary reason I have some concern with it. The housing does have a different part number so the thicker wall tubes may be a fact. As far as the axle diameter and/or design, there may be subtle differences that could dramatically increase ultimate and fatigue strength.
Keep it coming. I don't like to take things for granted and would like to confirm.
About Travel Trailer Group
44,029 PostsLatest Activity: Jan 28, 2025