Flyinhy Posted November 14, 2021 Share Posted November 14, 2021 I finally had a chance to weigh my coach today. I filled the fresh water tank and filled the diesel tank. The lp tank is 85% full and I have just about everything I need loaded. The steer came in at 11500, the drive at 22460 and the tag at 3000 ( 35psi) .....the tag behind the drivers seat indicates the coach weighs 46k......what am I missing? I inflated the steer to 95 the drive to 95 and the tag at 90...... Link to comment Share on other sites More sharing options...
96 EVO Posted November 14, 2021 Share Posted November 14, 2021 Whats the max on your steer axle? If 14,000 or 14,600lbs, I'd be adding 10psi on your tag axle regulator, and re-weighing. Link to comment Share on other sites More sharing options...
FishAR Posted November 14, 2021 Share Posted November 14, 2021 Here's a Monaco pamphlet on your coach: Executive inserts (rvusa.com) It says your gross vehicle weight rating is 46,000 pounds. That's not how much the coach weighs, that's the max it can weigh loaded down. Gross combined vehicle weight rating is 53,000 which generally means you can tow 7,000 pounds or have a 7,000 pound hitch, this seems low. Front gross axle weight rating 13,000 Rear 23,000 pounds Tag 10,000 pounds 1 Link to comment Share on other sites More sharing options...
Ivylog Posted November 14, 2021 Share Posted November 14, 2021 Well, you could add 9,000 lbs of stuff and not be over your max GVW. Shows why you didn’t need 295s on the rear once you increase the tag’s pressure to 45 or more adding 1500 lbs to it for 4500 lbs. This will take 2000 lbs off the drive and add 500 to the steer…contrary to what some will say. The tag and steer being heavier will improve the handling, not that it was bad. I add 5 psi to the pressures from the table because I travel in heavy crosswinds which shifts a fair amount of weight. For 12,000 lbs you need 90+5=95. 20,460 requires 85+5=90 for the drives. One 295 would carry your 4500 lbs at the minimum 80 psi (not sure why it’s 80 as other 22.5 are 70 minimum) so I’d run 70 in the tags. Link to comment Share on other sites More sharing options...
Flyinhy Posted November 14, 2021 Author Share Posted November 14, 2021 1 hour ago, Ivylog said: Well, you could add 9,000 lbs of stuff and not be over your max GVW. Shows why you didn’t need 295s on the rear once you increase the tag’s pressure to 45 or more adding 1500 lbs to it for 4500 lbs. This will take 2000 lbs off the drive and add 500 to the steer…contrary to what some will say. The tag and steer being heavier will improve the handling, not that it was bad. I add 5 psi to the pressures from the table because I travel in heavy crosswinds which shifts a fair amount of weight. For 12,000 lbs you need 90+5=95. 20,460 requires 85+5=90 for the drives. One 295 would carry your 4500 lbs at the minimum 80 psi (not sure why it’s 80 as other 22.5 are 70 minimum) so I’d run 70 in the tags. I've been following your advise quite a bit. I can't imagine loading 9k worth of stuff inside this coach. Why is pressure so low in the tag? I was under the impression that low air pressure was not good for these tires.....I'm about to move her back to the job site my apartment lease is up next week so everything is turning out as planned......fingers crossed ..... 11 hours ago, 96 EVO said: Whats the max on your steer axle? If 14,000 or 14,600lbs, I'd be adding 10psi on your tag axle regulator, and re-weighing. Yes...14 on the steer Link to comment Share on other sites More sharing options...
Mike H Posted November 14, 2021 Share Posted November 14, 2021 For what it's worth here is how much my 'loaded' coach weighs and what my tire pressures are set at and this is how it has been since it was new and handles like driving my F-150. Link to comment Share on other sites More sharing options...
Paul J A Posted November 14, 2021 Share Posted November 14, 2021 13 hours ago, Flyinhy said: I finally had a chance to weigh my coach today. I filled the fresh water tank and filled the diesel tank. The lp tank is 85% full and I have just about everything I need loaded. The steer came in at 11500, the drive at 22460 and the tag at 3000 ( 35psi) .....the tag behind the drivers seat indicates the coach weighs 46k......what am I missing? I inflated the steer to 95 the drive to 95 and the tag at 90...... What are the sizes of your present tires and what brand are they? Link to comment Share on other sites More sharing options...
Ivylog Posted November 14, 2021 Share Posted November 14, 2021 1 hour ago, Flyinhy said: I can't imagine loading 9k worth of stuff inside this coach In the real world you can’t as it’s impossible to load enough on the rear… you end up overloading the front axle before using all of the CCC. 1 hour ago, Flyinhy said: Yes...14 on the steer No, you only have a 13K front axle. 1 hour ago, Flyinhy said: Why is pressure so low in the tag? Because you have a much bigger tire than necessary for the load, even increasing from 3000lbs (a single PU truck tire can carry that much weight) to 4500 lbs. A single 295 can carry that much weight at 70 psi so 2 could at 40 psi BUT the tire wouldn’t stay on the rim in a turn. 1 Link to comment Share on other sites More sharing options...
96 EVO Posted November 14, 2021 Share Posted November 14, 2021 Even with a 13,000lb steer axle, I think you could still safely add 10psi to your tag axle regulator. 3,000lbs is just too low to get any benefit from your tag axle. Emergency braking, they would probably just lock up. 1 Link to comment Share on other sites More sharing options...
Paul J A Posted November 14, 2021 Share Posted November 14, 2021 3 minutes ago, 96 EVO said: Even with a 13,000lb steer axle, I think you could still safely add 10psi to your tag axle regulator. 3,000lbs is just too low to get any benefit from your tag axle. Emergency braking, they would probably just lock up. I am really questioning the accuracy of the Tag Down Pressure Regulator. Very unusual. He should add 10# and do a reweigh. Then you have two points to address and evaluate. And always travell at least 1-2 miles after adjusting the tag pressure before a reweigh. Those tag tires should have a minimum inflation pressure of 70#, 80 is better, so they don't "spin" on the rims. That will take some of the "squat" out of the tire too, and do that before a weigh, reweigh. Link to comment Share on other sites More sharing options...
96 EVO Posted November 14, 2021 Share Posted November 14, 2021 12 minutes ago, Paul A. said: I am really questioning the accuracy of the Tag Down Pressure Regulator. Very unusual. That, or was the tag tires fully on the scale 🤔. Link to comment Share on other sites More sharing options...
Paul J A Posted November 14, 2021 Share Posted November 14, 2021 29 minutes ago, 96 EVO said: That, or was the tag tires fully on the scale 🤔. Well, until we find out his tire size[s] we will have to wait. Some terrible misinformation being posted. Link to comment Share on other sites More sharing options...
Ivylog Posted November 14, 2021 Share Posted November 14, 2021 He put on 295/80/22.5 and maybe Toyo. 1 Link to comment Share on other sites More sharing options...
Flyinhy Posted November 14, 2021 Author Share Posted November 14, 2021 So I drove about 130 miles with tag at 40 psi ....drove ten times better. I adjusted to pressures to your specs. And yes, you're right 13k on the steer. Now I just have to figure out why my alternator quit charging half way. Link to comment Share on other sites More sharing options...
96 EVO Posted November 14, 2021 Share Posted November 14, 2021 Re-weigh when you get an opportunity. You could probably add another 5psi on the tag. Link to comment Share on other sites More sharing options...
Flyinhy Posted November 14, 2021 Author Share Posted November 14, 2021 5 hours ago, Paul A. said: I am really questioning the accuracy of the Tag Down Pressure Regulator. Very unusual. He should add 10# and do a reweigh. Then you have two points to address and evaluate. And always travell at least 1-2 miles after adjusting the tag pressure before a reweigh. Those tag tires should have a minimum inflation pressure of 70#, 80 is better, so they don't "spin" on the rims. That will take some of the "squat" out of the tire too, and do that before a weigh, reweigh. I will do another re-weigh this weekend. I should have done it earlier but I encountered another problem on the way to the camp site. I'll install a new pressure regulator since I'll finally be able to spend more than an hour or two at a time working on it. The little bit I added to the tag pressure made a huge difference. Link to comment Share on other sites More sharing options...
Paul J A Posted November 15, 2021 Share Posted November 15, 2021 1 hour ago, Flyinhy said: I will do another re-weigh this weekend. I should have done it earlier but I encountered another problem on the way to the camp site. I'll install a new pressure regulator since I'll finally be able to spend more than an hour or two at a time working on it. The little bit I added to the tag pressure made a huge difference. What are your tires sizes and what brand?? Link to comment Share on other sites More sharing options...
Flyinhy Posted November 15, 2021 Author Share Posted November 15, 2021 2 hours ago, Paul A. said: What are your tires sizes and what brand?? 295/80/22.5 toyo......I have a little deeper issues at the moment. Just came back to the motorhome and everything is dead. Even hooked to shore power my batteries aren't charging Link to comment Share on other sites More sharing options...
Ivylog Posted November 15, 2021 Share Posted November 15, 2021 Charles, crank the engine, it should charge the house batteries…OH wait, you said the alternator stopped working. Running the engine will put heat into the A Hot if freezing temps expected. “Everything is dead” if that includes the 120V then I’d start checking at the transfer switch assuming you actually have shore power. 1 Link to comment Share on other sites More sharing options...
Flyinhy Posted November 15, 2021 Author Share Posted November 15, 2021 Thank goodness I still have an apartment up here. I should probably start a new thread on this. This is the second time it's done this. Link to comment Share on other sites More sharing options...
Guest Ray Davis Posted November 15, 2021 Share Posted November 15, 2021 11 minutes ago, Flyinhy said: I should probably start a new thread on this. This is the second time it's done this. Yeah, a new thread would be a good idea. Is this the thread about the time before? https://www.monacoers.org/topic/3350-so-far-so-good/# If it is the thread and you think it may be the same problem again you could resurrect the old thread. It's hard to follow when the title is Weights, and many people may have grown tired of weights and will not know it has become electrical. Personally I'm interested in knowing if it's the same problem again or if it isn't then what what is the problem. Link to comment Share on other sites More sharing options...
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