Spring rate codes?
#11
Senior Member
Originally Posted by pfbz
What year, wheelbase, engine, drive, and cab configuration?
Sent from my iPhone using F150 Forum
#12
Senior Member
OK, one more thought...
I've never seen springs measured in "Pound Force/Foot" but evidently they sometimes are, and it sure sounds like an American car thing to do
If it was in lb/ft, 3900 lb/ft would equal a somewhat plausible 325 lb/in or 5.8K kgf/m.
Yea, I now I'm over-thinking this...
I've never seen springs measured in "Pound Force/Foot" but evidently they sometimes are, and it sure sounds like an American car thing to do
If it was in lb/ft, 3900 lb/ft would equal a somewhat plausible 325 lb/in or 5.8K kgf/m.
Yea, I now I'm over-thinking this...
Into physics much?? But your theory here does sound plausible...
#13
The confusion about the chart posted by pfbz is because Ford expresses spring rates (and other items) through GAWR (Gross Axle Weight Rating). That is, Ford shows the axle carrying result of the spring rate (and other items), not the spring rate itself. This makes comparison easier, because a) it defines things in a meaningful way and b) it allows comparisons across suspension geometries (spring rate isn't really what you want to know; you want wheel rate, but that depends on both spring rate and suspension design).
#14
Senior Member
Thread Starter
The confusion about the chart posted by pfbz is because Ford expresses spring rates (and other items) through GAWR (Gross Axle Weight Rating). That is, Ford shows the axle carrying result of the spring rate (and other items), not the spring rate itself. This makes comparison easier, because a) it defines things in a meaningful way and b) it allows comparisons across suspension geometries (spring rate isn't really what you want to know; you want wheel rate, but that depends on both spring rate and suspension design).
#16
Aftermarket companies, as you say, have a different task. Ideally, they would quote spring rate as a percentage of stock (OEM) rate (120%, 150% etc) and name the reference spring or springs. This would obviate the need to dig up OEM spring rates which on some vehicles (not just Ford) are close to impossible to find. I find that they too do a poor job of conveying information, often preferring to make their products seem to be the product of magic.
#17
Canadian Forces
So by using the chart on the first page and getting your curb weight for the front and back, you can use that to determine how much weight you should add to your bed for traction in the winter?
For example I have a 2011 Supercab 3.7L 4x4 145wb for 31** lbs front and 22** rear curb weight. I would add about 700-800 lbs to even up my front and back curb weight?
I know many of you don't deal with heavy snow or the winters we have up here in Canada but this could be a nice-to-know number. I only added 350 lbs this year and noticed the rear slide out a fair amount.
For example I have a 2011 Supercab 3.7L 4x4 145wb for 31** lbs front and 22** rear curb weight. I would add about 700-800 lbs to even up my front and back curb weight?
I know many of you don't deal with heavy snow or the winters we have up here in Canada but this could be a nice-to-know number. I only added 350 lbs this year and noticed the rear slide out a fair amount.
#18
Senior Member
Anyone ever figure this out what the codes mean? By the way mine is UUGG for a 2013 F150 SCAB 4x4 145" Max tow. Also here is the 2013 chart. https://www.fleet.ford.com/truckbbas...F-150_v1-1.pdf