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05-22-2015, 12:43 AM
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#43
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Member
Join Date: Jul 2011
Location: Recently moved to Arkansas and set my RV on my 25 acres until my new house is built.
Posts: 85
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Quote:
Originally Posted by Ghostrider61
What is the name of your website, so I may go there and learn something.
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FifthWheelSt.com
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David W. Gray - RV Safety Educator and Consultant at Fifth Wheel Street.
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Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
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07-12-2016, 02:06 PM
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#44
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Member
Join Date: Jul 2016
Posts: 51
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2002 Timberland Timberlodge 255RLS
2000 F350 Supercab SRW 4x4 w/ B&W Companion hitch
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07-13-2016, 05:26 PM
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#45
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Member
Join Date: Jul 2011
Location: Recently moved to Arkansas and set my RV on my 25 acres until my new house is built.
Posts: 85
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Quote:
Originally Posted by merc123
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Appreciate your efforts.
I have discovered a 50 pound error in your formula for Vehicle+Trailer GVW. I know that the results should be 11,650, but the result displayed is 11,600.
Additionally, this error causes a 50 pound error for the pin weight. Although there is a difference of 3,350 between loaded and unloaded rear axle weight, the true pin weight is 3,400. Looks like you did not account for the additional 50 pounds on the front axle.
Why enter the GCVW in addition to the GAWs? Cannot the two GAWs be summed to obtain the GCVW?
Here are my entry weights:
Ft. GAWR: 5940
Rr. GAWR: 9650
Max Trailer Wt: 20,400
GCWR: 28900
GVWR: 12,200
Vehicle only
Fr. GAW: 4,750
Rr. GAW: 3,500
GCVW: 8,205
Vehicle+Trailer
Fr. GAW: 4,800
Rr. GAW: 6,850
Trailer Wt: 16,200
GCVW: 27,850
__________________
David W. Gray - RV Safety Educator and Consultant at Fifth Wheel Street.
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07-13-2016, 05:49 PM
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#46
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Senior Member
Join Date: Dec 2013
Location: Plantation, Fl
Posts: 1,886
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Quote:
Originally Posted by Cyclone Dave
Why enter the GCVW in addition to the GAWs? Cannot the two GAWs be summed to obtain the GCVW?
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No - adding the GAWRs you might come close to the GVWR, maybe not. There are things like tires, brakes and suspension, and powertrain that figure into the GVWR.
GCVW ??? GCWR is the weight limit for Tow vehicle and vehicle being towed. 
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2024 Jayco Redhawk 26 M (OCCC challenged)
2017 RWD F 150 with a drive shaft disconnect
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07-13-2016, 06:02 PM
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#47
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Senior Member
Winnebago Owners Club
Join Date: Mar 2014
Posts: 14,891
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Quote:
Originally Posted by Cyclone Dave
Appreciate your efforts.
I have discovered a 50 pound error in your formula for Vehicle+Trailer GVW. I know that the results should be 11,650, but the result displayed is 11,600.
Additionally, this error causes a 50 pound error for the pin weight. Although there is a difference of 3,350 between loaded and unloaded rear axle weight, the true pin weight is 3,400. Looks like you did not account for the additional 50 pounds on the front axle.
Why enter the GCVW in addition to the GAWs? Cannot the two GAWs be summed to obtain the GCVW?
Here are my entry weights:
Ft. GAWR: 5940
Rr. GAWR: 9650
Max Trailer Wt: 20,400
GCWR: 28900
GVWR: 12,200
Vehicle only
Fr. GAW: 4,750
Rr. GAW: 3,500
GCVW: 8,205
Vehicle+Trailer
Fr. GAW: 4,800
Rr. GAW: 6,850
Trailer Wt: 16,200
GCVW: 27,850
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Sum of front and rear axle GAWR = 15,590 - this exceeds your GVWR (12,200) by 3,390. Does not seem right.
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Gordon and Janet
Tour 42QD/InTech Stacker
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07-13-2016, 06:19 PM
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#48
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Senior Member
Join Date: Dec 2013
Location: Plantation, Fl
Posts: 1,886
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Quote:
Originally Posted by Gordon Dewald
Sum of front and rear axle GAWR = 15,590 - this exceedsee your GVWR (12,200) by 3,390. Does not seem right.
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I think there are a number of issues with those numbers for example -
Vehicle only
Fr. GAW: 4,750
Rr. GAW: 3,500
GCVW: 8,205
Those axle weights equal a GVW (not GCVW) of 8,250# (not 8,205#)
__________________
2024 Jayco Redhawk 26 M (OCCC challenged)
2017 RWD F 150 with a drive shaft disconnect
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07-13-2016, 07:02 PM
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#49
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Member
Join Date: Jul 2011
Location: Recently moved to Arkansas and set my RV on my 25 acres until my new house is built.
Posts: 85
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Quote:
Originally Posted by Mich F
No - adding the GAWRs you might come close to the GVWR, maybe not. There are things like tires, brakes and suspension, and powertrain that figure into the GVWR.
GCVW ??? GCWR is the weight limit for Tow vehicle and vehicle being towed. |
I did not say anything about GAWR or GVWR in my comment.
Scale Wt. Ft: 4750+Rr: 3500=GCVW: 8250. Why should I have to calculate the GCVW entry when you could just create the formula to sum the front and rear GAW? Same goes for the "Vehicle+Trailer" inputs.
__________________
David W. Gray - RV Safety Educator and Consultant at Fifth Wheel Street.
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07-13-2016, 07:07 PM
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#50
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Member
Join Date: Jul 2011
Location: Recently moved to Arkansas and set my RV on my 25 acres until my new house is built.
Posts: 85
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Quote:
Originally Posted by Mich F
I think there are a number of issues with those numbers for example -
Vehicle only
Fr. GAW: 4,750
Rr. GAW: 3,500
GCVW: 8,205
Those axle weights equal a GVW (not GCVW) of 8,250# (not 8,205#) |
Correct. I didn't notice I transposed the digits. Should have typed 8,250.
Now I can't edit. Silly that the edit function is turned off after a period of time.
__________________
David W. Gray - RV Safety Educator and Consultant at Fifth Wheel Street.
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07-13-2016, 07:13 PM
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#51
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Member
Join Date: Jul 2011
Location: Recently moved to Arkansas and set my RV on my 25 acres until my new house is built.
Posts: 85
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Quote:
Originally Posted by Gordon Dewald
Sum of front and rear axle GAWR = 15,590 - this exceeds your GVWR (12,200) by 3,390. Does not seem right.
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I've never seen when the GAWRs equal to or are less than the GVWR. From every chart I've read to date, the sum of the GAWRs always exceed the GVWR.
__________________
David W. Gray - RV Safety Educator and Consultant at Fifth Wheel Street.
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07-13-2016, 07:31 PM
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#52
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Senior Member
Join Date: Dec 2013
Location: Plantation, Fl
Posts: 1,886
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OK - what was confusing me is your GCVW ,which I have never heard of.
When you add your GAWs, most people come up with a GVW.
__________________
2024 Jayco Redhawk 26 M (OCCC challenged)
2017 RWD F 150 with a drive shaft disconnect
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07-13-2016, 08:17 PM
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#53
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Member
Join Date: Jul 2011
Location: Recently moved to Arkansas and set my RV on my 25 acres until my new house is built.
Posts: 85
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Quote:
Originally Posted by Mich F
OK - what was confusing me is your GCVW ,which I have never heard of.
When you add your GAWs, most people come up with a GVW.
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It's not mine! GCVW is written and explained right there on the Excel form.
Yeah, but the true purpose of having a weight safety calculator is not to have to calculate weights to get a sum before entering any numbers.
The calculator products I created does not require the user to calculate any numbers before entering into the calculator.
__________________
David W. Gray - RV Safety Educator and Consultant at Fifth Wheel Street.
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07-13-2016, 08:48 PM
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#54
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Senior Member
Join Date: Dec 2013
Location: Plantation, Fl
Posts: 1,886
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I was wondering why so many links on this thread weren't working, until I realized this thread started over 5 years ago.
I understand GCVW when it refers to the tow vehicle and whatever is being towed, not referring to the tow vehicle by itself - there shouldn't be a "C".
__________________
2024 Jayco Redhawk 26 M (OCCC challenged)
2017 RWD F 150 with a drive shaft disconnect
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07-14-2016, 08:38 AM
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#55
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Senior Member
Winnebago Owners Club
Join Date: Mar 2014
Posts: 14,891
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Quote:
Originally Posted by Cyclone Dave
I've never seen when the GAWRs equal to or are less than the GVWR. From every chart I've read to date, the sum of the GAWRs always exceed the GVWR.
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I am questioning the 3390 difference. There usually anywhere upwards from a few hundred pounds but this is quite significant. My 450 has a difference of 2000 lbs. What kind of truck are working with. Looks like the numbers are for a 250 or 350.
On the door pillar on the drivers side there should be a series of numbers for the vehicle? Mine are
GVWR - 16,000
GAWR (front) - 6,000
GAWR (rear) - 12,000
From the Ford brochure that came with my truck:
GCWR - 33,000
__________________
Gordon and Janet
Tour 42QD/InTech Stacker
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07-15-2016, 09:21 AM
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#56
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Member
Join Date: Jul 2011
Location: Recently moved to Arkansas and set my RV on my 25 acres until my new house is built.
Posts: 85
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Quote:
Originally Posted by Gordon Dewald
I am questioning the 3390 difference. There usually anywhere upwards from a few hundred pounds but this is quite significant. My 450 has a difference of 2000 lbs. What kind of truck are working with. Looks like the numbers are for a 250 or 350.
On the door pillar on the drivers side there should be a series of numbers for the vehicle? Mine are
GVWR - 16,000
GAWR (front) - 6,000
GAWR (rear) - 12,000
From the Ford brochure that came with my truck:
GCWR - 33,000
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Sorry, big error correction on my part. I took the GAWRs from my app not realizing they were changed and not true for my truck. Regardless, it doesn't eliminate the error for the pin weight on the calculator that merc123 posted.
The actual difference between sum of the GAWRs and GVWR is 2,350.
Here are my corrected entry weights:
Ft. GAWR: 5200
Rr. GAWR: 9350
Max Trailer Wt: 20,400
GCWR: 28900
GVWR: 12,200
Vehicle only
Fr. GAW: 4,750
Rr. GAW: 3,500
GCVW: 8,250
Vehicle+Trailer
Fr. GAW: 4,800
Rr. GAW: 6,850
Trailer Wt: 16,200
GCVW: 27,850
2008 Ram 3500
__________________
David W. Gray - RV Safety Educator and Consultant at Fifth Wheel Street.
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