Good Sam Club Open Roads Forum: Search
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  



Open Roads Forum  >  Search the Forums

 > Your search for posts made by 'MHay' found 9 matches.

Sort by:    Search within results:
  Subject Author Date Posted Forum
RE: Help Deciphering CAT Scale Weights

I would aim for getting the brackets at the right level so the bars rest evenly across the surface. Than I would tilt the hitch head rearward until I got the weight transfer that I wanted. This all assumes that you trailers A frame can take the stress of the additional pressure the WD bars will put on it via the brackets. You have very strong, square, non tapered WD bars that are not too flexible. It is not unheard of for A frames to bend or break from excess WD pressure, especially when going through a dip like you would find at a gas station or other driveway or even some RR crossings. If your frame is a 6 inch frame or larger it should be ok. Barney I finally took the time to make some adjustments. I added the larger spacer to tilt the head back some more. I also dropped the frame brackets by one notch to relieve some tension and to level out the bars. I tried it out at that setting and it “felt” like there was too much tension. I could see the bars bending when tensioned and there was lots of additional popping noises when driving. I then lowered the brackets one more notch and that seemed to be a good balance. I stopped at the scales yesterday on our way home from a trip and the numbers confirm that the weight has been spread to the TV front axle and TT axles. Note: trailer weight has increased by 420 pounds due to water and other cargo. Despite the extra weight the adjustments have still taken more weight off the rear axle and moved it to the front axle. TV Front Axle: 3,120 (was 3,020) TV Rear Axle: 4,480 (was 4,560) TT Axles: 6,960 (was 6,560) New Gross Weight: 14,560 (was 14,140) I’m still 100 pounds above the rear GAWR for my truck, so I’m considering adding the last washer to tilt the head back to its max, leaving the frame brackets where they are, to see if I can squeeze anything else out of it.
MHay 09/14/20 11:54am Towing
RE: Help Deciphering CAT Scale Weights

Thanks for all the great responses so far! The GVWR for the Expedition is 7,720 based on the sticker on the door jamb. So based on these weights, I have a little room to spare (pass 1 with the WDH was 7,580 for vehicle weight). The real issue is the GAWR for the rear axle. The rating is 4,380, but I'm sitting at 4,560. I'm using a Curt TruTrack hitch rated at 15,000 GTW and 1,500 TW. Currently I have the brackets on the trailer as high as they'll go. I have not tried tilting the hitch head yet, which I believe would apply more tension. As it is now, the trunion bars seem to be exerting lots of force on the angle brackets, to the point where they are wearing through the black paint on the front of the brackets and starting to mar them. Should I try tilting the hitch head back in an attempt to get more weight off the rear axle, or does it seem like I'm fairly maxed out already? Here's a link to the instructions: Curt TruTrack Hitch. We're headed on a trip tomorrow, so I'll try to get a picture of the current setup once I'm hooked up.
MHay 08/27/20 09:20pm Towing
RE: Help Deciphering CAT Scale Weights

I also checked some weights I got at my local garbage transfer station and they were also in 20 lb multiples. Thus a difference of 20 lbs on separate weights can be expected. OP...maybe I read it wrong about being over a RAWR I would take some weight off the trucks rear axle. A RAWR is the lessor of a wheel/tire/rear spring pack or the axle itself. Most trucks today weak link can be the OEM wheels or rear spring pack. No, you read that correctly. I'm over by 180 lbs. which is why I was trying to figure out if I can move more off of the rear axle with the WDH, or just try adjusting the cargo in the trailer. :(
MHay 08/25/20 12:50pm Towing
RE: Help Deciphering CAT Scale Weights

Your WDH is moving 400 lbs of weight out of a total of 940 lbs. That's 42% which is pretty **** good. Your tongue weight is also 12.7% which is good also. The only thing you can do is try to shift 150 lbs of weight inside the trailer so it's off the tongue and onto the trailer axle. If you can't do that, then It's just to much trailer for that vehicle. Thanks -- that's the confirmation I wanted to get. I guess I'm still trying to understand how 1,000 lbs. is being added to the axle when the WDH bars are on despite tongue weight being 940 lbs.
MHay 08/25/20 12:07pm Towing
RE: Help Deciphering CAT Scale Weights

I'm confused how you lost 20 pounds completely using WDH bars (14,140 compared to 14,160 for the other two weight rating passes). I will assume the OP used a CAT scale. CAT scale weights are in 20 lb multiples. If you look at the OP's weights they are in 20 lb multiples. I checked several of my CAT scale receipts and they were all in 20 lb multiples. I also checked some weights I got at my local garbage transfer station and they were also in 20 lb multiples. Thus a difference of 20 lbs on separate weights can be expected. That tells me the scales aren't calibrated. It shouldn't matter. A 20 pound increment transferred from one scale to a different scale because of a weight distribution system doing what they're supposed to do doesn't make the weight just disappear. it should take that 20 pounds from one scale and it should show up on another scale. Yes, confirming it was a CAT scale.
MHay 08/25/20 11:52am Towing
RE: Help Deciphering CAT Scale Weights

As I think about the numbers some more, things don't add up to me. When using the weights in my original post to calculate tongue weight, I get 940 lbs. However, looking at the drive axle weight on Pass 2 (connected to trailer, no WDH bars), the change in axle weight is 1,400 lbs. from the unloaded weight (Pass 3). If tongue weight is 940, how is the axle weight increasing by 1,400 lbs. when hitched to the trailer without WDH bars? I might need a physics refresher to set me straight.
MHay 08/25/20 10:49am Towing
RE: Help Deciphering CAT Scale Weights

Not an expert at this, but I think we need more info-truck size(1/2 ton 3/4 ton etc) load range of tires on truck and trailer, weight rating of axles and tires on trailer., For me all those weights would mean I'm good to go, but I have a diesel dually. It's a 2020 Expedition Max. Payload: 1,700 Front GAWR: 3,450 Rear GAWR: 4,380 GCWR: 15,200 Max Trailer Weight: 9,000 Notably the rear GAWR is exceeded in the current setup, which is the reason I'm asking if I can expect to be able to move more weight off the rear axle with a WDH.
MHay 08/25/20 10:12am Towing
RE: Help Deciphering CAT Scale Weights

I'm confused how you lost 20 pounds completely using WDH bars (14,140 compared to 14,160 for the other two weight rating passes). Yeah, I'm not sure about that either. I just chalked it up to an accuracy issue with the scales.
MHay 08/25/20 10:01am Towing
Help Deciphering CAT Scale Weights

Hi all, New to the forum, and to RVing. I want to make sure my WDH is adjusted properly. I took my rig and travel trailer (TT) to the scales this past weekend and did three passes: first was hooked with WDH bars in place, second with WDH bars released, and third was rig and trailer separated. The weights are below. What I'm trying to determine is whether or not I can get more weight off the rear axle and distributed to the front and TT axles. Weights displayed are in pounds. 1st Pass (Connected with WDH bars): Steer Axle: 3,020 Drive Axle: 4,560 Trailer Axle: 6,560 2nd Pass (Connected without WDH bars): Steer Axle: 2,740 Drive Axle: 4,960 Trailer Axle: 6,460 3rd Pass (Disconnected trailer from rig): Steer Axle: 3,200 Drive Axle: 3,560 Trailer Axle: 7,400 From these measurements, I calculate the tongue weight to be 940 pounds (7,700-6,760). Comparing pass 1 with pass 2, using the current setup the WDH bars seem to add 280 pounds to the steer axle, take 400 pounds off the drive axle, and add 100 pounds to the trailer axle. Should I be aiming for more weight on the steer axle (it's 180 pounds lighter than normal drive weight), and less off the drive axle (1,000 pounds more than the normal driving weight). And with only 100 pounds being transferred to the trailer axle, it seems like there's more that could be moved there.
MHay 08/25/20 09:33am Towing
Sort by:    Search within results:


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2021 CWI, Inc. © 2021 Good Sam Enterprises, LLC. All Rights Reserved.