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Desert Captain

Payson

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Posted: 03/05/22 12:48pm Link  |  Quote  |  Print  |  Notify Moderator

We managed to score 5 days in the Zion Watchman CG for next week so today and tomorrow are dedicated to the requisite pre trip preparations. We have not used our coach since last fall, had to cancel Quartzite due to Covid and then had a frozen pipe burst in our house which took 7 weeks to completely repair/replace and obviously kept us at home...grrrr.

I am lucky enough to be able to store the 24' Class C on our property with a dedicated 30 amp connection. We often have temps down in the mid to low 20's and have seen mid teens a couple of times so... Last December I winterized the coach even going so far as to blow out the water lines with my compressor. Drained the 40 gallon water tank and 6 gallon water heater. Filled the traps with RV antifreeze and added half a gallon to both the black and grey tanks. No need for anti freeze in the lines so did not have to blow them out again.

Ran the generator for an hour under a decent load, cranked up the 35K btu furnace for 45 minutes, fired up the tank heaters for half an hour. After refilling I ran the water heater on AC and LP and basically ran/checked every system in the coach with no issues. [emoticon] Given the recent spike in fuel prices I'm glad I already had full fuel and LP tanks. It's been raining off and on all day so topping up the tires{ 60 on the fronts and 65 on the rears} can wait until tomorrow. I will verify 25 psi in the air bags as we are traveling with a medium load of about 11,000# which includes a full water tank.

Spare keys, meds, cash etc go into the safe. I'll grocery shop in the morning and then all that will be left is to load food, clothes and toys. Hope to be on the road {332 miles} by 0730 and in our site by 2. The weather is going to colder than originally forecast but winter camping is not new or a problem. The heavy snow that fell in Zion this weekend should leave the park an amazing winter wonderland. Can't wait!

[emoticon]





Phedley

Texas

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Posted: 03/05/22 01:19pm Link  |  Quote  |  Print  |  Notify Moderator

In response to the pre-trip air pressure. We are new to the class c motor home. We are running 70psi front and rear with the air bags at 60psi. The suspension has the heaviest sway bar that you can by I think that it’s 1 1/2” dia. Heavy duty shocks front and rear. The RV still does not handle well especially in the wind. It is all over the road. I’ve driven 18 wheelers before and they handle like a corvette this RV not so. I’m driving about 55-60 mph. Any ideas as to why it handles the way it does?

Lwiddis

Southern California :(

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Posted: 03/05/22 01:31pm Link  |  Quote  |  Print  |  Notify Moderator

The 80,000 pounds 18 wheelers weigh has a lot to do with their stability.


Winnebago 2101DS TT & 2022 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AH Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad


Phedley

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Posted: 03/05/22 02:13pm Link  |  Quote  |  Print  |  Notify Moderator

Yep knew that. So are you agreeing that a class C rv should be all over the road?

Desert Captain

Payson

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Posted: 03/05/22 02:16pm Link  |  Quote  |  Print  |  Notify Moderator

Phedley wrote:

In response to the pre-trip air pressure. We are new to the class c motor home. We are running 70psi front and rear with the air bags at 60psi. The suspension has the heaviest sway bar that you can by I think that it’s 1 1/2” dia. Heavy duty shocks front and rear. The RV still does not handle well especially in the wind. It is all over the road. I’ve driven 18 wheelers before and they handle like a corvette this RV not so. I’m driving about 55-60 mph. Any ideas as to why it handles the way it does?


Without knowing what coach you have it is hard to guess but... Until you weigh your coach loaded as you normally travel you will no idea what the proper psi should be. Take your scale weights to the tire manufacturers load/inflation table and air up accordingly. Lots of folks {and I am one of them} add a 10 percent fudge factor for good measure.

Sounds to me like your front tires are probably over inflated for the load they actually are carrying which will exacerbate that "pig on skates" feeling. If you have a Ford 350/450 you would also probably benefit from some additional caster. The right should be around 4.8* and the left about 4.5*. Happily it is a simple matter to correct both of these and costs very little to do so.

Give us the specifics on your coach as that will make it easier for us to speculate further. Good luck!

[emoticon]

pianotuna

Regina, SK, Canada

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Posted: 03/05/22 02:31pm Link  |  Quote  |  Print  |  Notify Moderator

Phedley wrote:

The RV still does not handle well especially in the wind. It is all over the road. I’ve driven 18 wheelers before and they handle like a corvette this RV not so. I’m driving about 55-60 mph. Any ideas as to why it handles the way it does?


You may want to try Air Tabs. They didn't save me a dime on fuel--unless there was a tail wind, but they did improve handling with oncoming big trucks.

The tabs also improved cabin noise--quite dramatically.

https://www.airtab.com/application-rv.htm

You report 70 lbs in the front. I find that too high for my 28'5" class C. I run 65 in the front and 80 in the rear. My rv feels as if I'm driving on top of a round ball with too much pressure in the front.

Think about weighing all four tires individually. My total is 13,750 pounds fully loaded with all tanks (waste and gray) with two passengers. At that time, there were 455 lbs of house batteries. Rear axle rating is 14,000.

What is the ratio of wheel base to length? 55% is ideal (27 foot with 176 inch wheel base). As one approaches 50% handling gets worse--quite rapidly. Below 50% and it is a nightmare.

* This post was edited 03/05/22 02:42pm by pianotuna *


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

Phedley

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Posted: 03/05/22 02:57pm Link  |  Quote  |  Print  |  Notify Moderator

I read the reviews on the air tabs. Impressive. Also will change my tire psi. Thanks

Hank85713

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Posted: 03/05/22 04:22pm Link  |  Quote  |  Print  |  Notify Moderator

you actually need to experiment with the air pressures for best results. I run 60-65 in front and 65-70 in rears. 60-70 in airbags. we do not load heavy only carry about 1/3 tank of water and empty grey/black.

dont know if you have new/used rig so hard to say much more. If used may need new shocks to help. Some say buy the high dollar stuff I have read reviews on monroe shocks and they sound to be good. again if used check if you have a front stabilizer it may also need r&r.

Rick Jay

Greater Springfield area, MA

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Posted: 03/05/22 04:46pm Link  |  Quote  |  Print  |  Notify Moderator

Desert Captain,

Good Luck on your trip. I envy you. We probably won't be leaving the driveway until at least June...if even that. The rig really hasn't moved in the past 2 years or so. Wifey & I have been sleeping in it most nights, though, so most systems are being tested occasionally. And yes, it's expensive to run the electric heaters...but I've become an expert on how to keep the water flowing in that rig down to sub-zero temps! [emoticon] We're giving the kids practice to live in the house on their own! LOL

Safe travels!!!

Phedley wrote:

Also will change my tire psi.


Please take their entire recommendation to heart. You don't just "change" the tire pressure. You need to weigh the rig as loaded ready to travel. Individual corner weights if possible, but that's usually not too easy to do. The next best is to get each axle weight. Then use those weights to find the proper pressure from the tire manufacturer's website.

I don't believe you've informed us of the chassis or size of your RV.

Please weigh it first, then adjust the pressures, though if you're the typical E350/E450 Class C, having the rear tires at 80 psi seems to be a common requirement/recommendation for the longer (28') rigs. But it really depends upon the size and weight of your rig.

Good Luck,

~Rick


2005 Georgie Boy Cruise Master 3625 DS on a Workhorse W-22
Rick, Gail, 1 girl (26-Angel since 2008), 1 girl (21), 2 boys (22 & 19).
2001 Honda Odyssey, Demco Aluminator tow bar & tow plate, SMI Silent Partner brake controller.


Phedley

Texas

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Posted: 03/05/22 08:28pm Link  |  Quote  |  Print  |  Notify Moderator

Yea sorry. 2006 Dodge/Mercedes 3500 23H

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