โJul-23-2017 09:04 PM
โJul-26-2017 08:04 AM
โJul-26-2017 08:01 AM
jadatis wrote:
GVWR is in rule always less then the GAWR's added up, and this is to allow some weightshifting between the axles.
โJul-26-2017 01:48 AM
โJul-25-2017 10:31 PM
Atlee wrote:
Weighted my truck and trailer Friday, before we went on a weekend camping trip. The trailer is brand new. It had never been out camping before.
My WDH is the Blue OX Sway Pro. With 1k bars. I put it up to the 9th Chain link as called for in the book, and the Tech who installed the the Blue Ox
First, my TV is a 2014 F150 XLT 4x4, Supercab, 8 ft box, with Max Tow Package, and the HDPP. The FGAWR = 4050#, RGAWR = 4800#, GVWR = 8200#, CCC = 2286#, and the GCWR = 17,100#. The truck was rigged for towing, meaning all the normal tools, generators, gasoline, compressor, etc were on board as well as a full tank of gasoline.
My travel trailer is a new Jayco Jay Flight 23RB. It's a "stick and tin" built trailer and no slide. GAWR = 3500# each, GVWR = 6500#, Factory Shipped weight = 4758#, CCC = 1742#.
These are my numbers from my weigh tickets. Truck with no trailer, Steer Axle 3660#, Drive Axle = 3340#, Gross Weight = 7000#
Truck with trailer, but WDH disengaged. SA = 3340#, DA = 4640#, Trailer Axle = 5320#, Combined Gross Weight = 13,300#
Truck with trailer, but with WDH engaged. SA = 3520#, DA = 4280#, TA = 5460, GCWR = 13,200.
โJul-25-2017 08:46 PM
Atlee wrote:
Thanks for asking. I just checked the scale tickets again. They are correct as listed. One of those weird circumstances.JBarca wrote:Atlee wrote:
These are my numbers from my weigh tickets. Truck with no trailer, Steer Axle 3660#, Drive Axle = 3340#, Gross Weight = 7000#
Truck with trailer, but WDH disengaged. SA = 3340#, DA = 4640#, Trailer Axle = 5320#, Combined Gross Weight = 13,300#
Truck with trailer, but with WDH engaged. SA = 3520#, DA = 4280#, TA = 5460, GCWR = 13,200.
Hi Atlee,
Just asking in case you had a typo and we are figuring math off your numbers. Check your weight slips. While not impossible... more unusual that your steer axle lost weight to come out exactly (3,340#) which is the same as the rear axle (3,340#) before hitching up. It might be, just checking a typo did not happen.
Thanks
John
โJul-25-2017 06:33 PM
JBarca wrote:Atlee wrote:
These are my numbers from my weigh tickets. Truck with no trailer, Steer Axle 3660#, Drive Axle = 3340#, Gross Weight = 7000#
Truck with trailer, but WDH disengaged. SA = 3340#, DA = 4640#, Trailer Axle = 5320#, Combined Gross Weight = 13,300#
Truck with trailer, but with WDH engaged. SA = 3520#, DA = 4280#, TA = 5460, GCWR = 13,200.
Hi Atlee,
Just asking in case you had a typo and we are figuring math off your numbers. Check your weight slips. While not impossible... more unusual that your steer axle lost weight to come out exactly (3,340#) which is the same as the rear axle (3,340#) before hitching up. It might be, just checking a typo did not happen.
Thanks
John
โJul-25-2017 10:32 AM
Atlee wrote:
These are my numbers from my weigh tickets. Truck with no trailer, Steer Axle 3660#, Drive Axle = 3340#, Gross Weight = 7000#
Truck with trailer, but WDH disengaged. SA = 3340#, DA = 4640#, Trailer Axle = 5320#, Combined Gross Weight = 13,300#
Truck with trailer, but with WDH engaged. SA = 3520#, DA = 4280#, TA = 5460, GCWR = 13,200.
โJul-25-2017 10:25 AM
BarneyS wrote:
jadatis wrote:
Maximum allowed tonge-weight in America is as far a I know 15% so this 15.5% would not give problems when weighed by police , I think.
Snip...
America has no "maximum allowed" tongue weight.- at least non that I have ever heard of. In fact, there are NO recreational vehicle regulations or laws pertaining to tongue weight at all or even axle weights as far as I know.
โJul-24-2017 08:28 AM
โJul-24-2017 08:17 AM
jadatis wrote:
Maximum allowed tonge-weight in America is as far a I know 15% so this 15.5% would not give problems when weighed by police , I think.
And indeed this is when you would weigh the tonge off the TV with a device.
So this is the weight when WDH is disabled.
See what a treasure of information this weighing gives, so I agree with RCMAN46.
And you also did it the right way.
But it can be better , by weighing per axle-end in all the different situations.
Would though also give more measuring differences by the inacuracy of the scale.
And did you weigh with all the persons in the car?, Otherwise you could yust estimate that one person , what effect it has on weights on front and rear, by the place he/she sits. Again some inacuracy it gives.
But for instance to determine the needed tirepressure, it is acurate enaugh, because you then always have to add a percentage to the weighed loads for R/L unbalance, and pressure-loss in time, etc.
As "pigheaded Dutch Selfdeclared tirepressure-speialist" I then can help you , but need also tire-specifications.
โJul-24-2017 07:08 AM
โJul-24-2017 06:42 AM
Atlee wrote:
I thought if I weighed the truck and trailer with and without the spring bars engaged, I could get a close approximation of the tongue weight.
What combination of those numbers would give that to me?
โJul-24-2017 06:29 AM
โJul-24-2017 04:14 AM
jadatis wrote:
The 100 lbs difference between WDH and no WDH is mesuring difference of the scale, but this is not what you think is strange.
WDH transports a part of Hichweight from rear tires of TV to front tires of TV and Trailer tires, and that is yust what you noticed when weighing.
The difference rear axle between only TV and trailer with WDH disengaged, is 4640lbs-3340 lbs= 1300 lbs, and you think then that this is the tonge-weight.
But this is by leaverworking not the tonge-weight.
Example : asume hich of TV placed half of the wheelbase ( distance front axle to rear axle)behind the rear axle, then real hich weight would be 1/1.5=2/3th of that is 865 lbs . But you can measure it yourselfes acurate enaugh to estimate your real tonge-weight.
The front axle is lifted up a bit by that same leaver working.
It gives for same compare
, 3660lbs-3340 lbs= 330 lbs less.
You can also substract the front from rear is 1300 lbs - 330 lbs= 970 lbs.
And this is your tonge weight exactly , only difference can be measuring differences of scale.
From this we can also calculate howmuch your hich of TV is placed behind the rear axle in ratio of wheelbase and that is 1300/970= 1.34 so hich 34% of wheelbase behind the rear axle.
Chech it yourselfes by measuring wheelbase and distance rear axle to hich of TV. Most acurate is measuring from front-side of front wheel to front side of rear wheel, middle of a wheel is not always so easy to determine.
From rear axle to hich is not as axurate to measure, but its yust for the idea.
Then if wheelbase is for instance 10 feet( foot??) , the distance rear axle to hitch is 34% of that is 3.4 feet aproximately.
EDIT: its even more easy to determine tongue-weight, by comparing the gross weights.
That is TV without trailer atached 7000 lbs.
TV with Trailer atached WDH not set 7980 lbs.
TV with Trailer atached WDH set 7900 lbs.
Tonge weight is then difference between no trailer atached and with trailer atached, and is between 900 and 980 lbs.
The difference is measuring differences, a calcibrated scale is allowed to give 1 measuring step different wich is mostly 20 lbs, and then even it can be in between the next steps, so measuring difference can rise to a small 40 lbs.
This per axle weighed can rise to 60 to 120 lbs difference in measurement. We asume your real total weights did not chanche during the measurement proces.
Another EDIT: the difference of trailer atached and not atached of 80 lbs is in theory the part that goes to the trailer tires by engaging the hich. Part of tonge weight goes not only to front tires but also to trailer tires. Read 5460-5320=140 lbs and only TV gross weights (determined by front+rear axles weight added) suggest 80 lbs, diffence is because of measuring differences of scale.
โJul-24-2017 02:31 AM