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-   -   Finally obtained a new 4 corner weight since we loaded the rig for full timing. (http://www.irv2.com/forums/f258/finally-obtained-a-new-4-corner-weight-since-we-loaded-the-rig-for-full-timing-39326.html)

SargeW 06-09-2008 08:46 PM

First let me say that it was WAY harder then is should have been to find an acceptable location to obtain a 4 corner weight. I called lots of places, and either they just were not interested in weighing an RV, or their scales were not able to accomidate the procedure.

I finally found a scale at a Oil Trucking company that I went to on a Sunday afternoon in Oxnard in So. Cal.

What I learned was interesting. My front wheel weights did not change much at all, and were within 20 pounds of my previous weight about a year ago. The rears did show a jump in weight. Interestingly when the previous weight was checked, the rear passenger side was heavier than the drivers rear by about 200 pounds. The passenger rear houses the basement air unit.

The drivers rear has the bedroom slide which contains the wardrobe closet and drawers. The new weight shown that the Drivers rear was now about 260 pounds heavier than the passenger rear. That means that I not only made up the original difference, I added another 200 plus pounds on top of it. Not much to do about that though, as the slide holds about 90% of all our clothes. (I told the DW that it must be those extra pair of shoes she brought along http://irv2.infopop.cc/images/laugh.gif)

The coach still feels the same when driving though, even though we have added a significant amount of weight throughout the rig. I checked my tire inflation numbers using a tire to weight ratio I printed off the Michelin web site for my size and model of tire. My current pressures are still accurate, and in fact I have been running the fronts about 5 pounds high.

It did create real peace of mind though knowing that I am rolling on properly inflated tires that are optimumly inflated for my particular load.

As a side note, my tire pressuer monitor system (TireSafe Guard) did tip me to one of my outside duals being about 3 pounds less than it's inside partner. Not enough to set off an alarm, but I did check it and filled it back up to match the inside tire. A toad tire was a few pounds off as well. I really like being able to monitor the pressures while rolling, and recommend any of the TPMS systems for any RV, MH or towable.

Sarge

SargeW 06-09-2008 08:46 PM

First let me say that it was WAY harder then is should have been to find an acceptable location to obtain a 4 corner weight. I called lots of places, and either they just were not interested in weighing an RV, or their scales were not able to accomidate the procedure.

I finally found a scale at a Oil Trucking company that I went to on a Sunday afternoon in Oxnard in So. Cal.

What I learned was interesting. My front wheel weights did not change much at all, and were within 20 pounds of my previous weight about a year ago. The rears did show a jump in weight. Interestingly when the previous weight was checked, the rear passenger side was heavier than the drivers rear by about 200 pounds. The passenger rear houses the basement air unit.

The drivers rear has the bedroom slide which contains the wardrobe closet and drawers. The new weight shown that the Drivers rear was now about 260 pounds heavier than the passenger rear. That means that I not only made up the original difference, I added another 200 plus pounds on top of it. Not much to do about that though, as the slide holds about 90% of all our clothes. (I told the DW that it must be those extra pair of shoes she brought along http://irv2.infopop.cc/images/laugh.gif)

The coach still feels the same when driving though, even though we have added a significant amount of weight throughout the rig. I checked my tire inflation numbers using a tire to weight ratio I printed off the Michelin web site for my size and model of tire. My current pressures are still accurate, and in fact I have been running the fronts about 5 pounds high.

It did create real peace of mind though knowing that I am rolling on properly inflated tires that are optimumly inflated for my particular load.

As a side note, my tire pressuer monitor system (TireSafe Guard) did tip me to one of my outside duals being about 3 pounds less than it's inside partner. Not enough to set off an alarm, but I did check it and filled it back up to match the inside tire. A toad tire was a few pounds off as well. I really like being able to monitor the pressures while rolling, and recommend any of the TPMS systems for any RV, MH or towable.

Sarge

tmitchell 06-10-2008 04:33 AM

In my opinion 260 lbs. difference from one side of the rear axle to the other is very close to perfect balance.
Quite a few motorhomes are operating with well over 1,000 lbs. difference. A member of our club had 2,000 lbs. more on one side of the rear axle then the other.
Tom

Route 66 06-10-2008 05:52 AM

FWIW, Spartan's side to side axle weight tolerance is 5% of the axle weight rating.

260 lbs. is great.

SargeW 06-10-2008 10:56 AM

Hey, thanks Tom, Dirk. I really haven't asked any other motorhomers what their weights were for comparison. I'm not sure too many would know!

tderonne 06-10-2008 02:35 PM

You didn't mention the exact process you ised to get all four weights. I read about folks driving the left side and right side onto the scales. That may work, but I doubt it. To get exact weights everything must per darn near perfectly flat.

The rear springs in my gasser have a rate of about 1200 pounds per inch. If the scales are .1" from flat, the weight will be 120 pounds off. On a DP the rate could be double that.

You noted a 400 pound swing. To get that the scales would have only had to be about 1/4" from perfectly flat.

Something to think about.

fun time 06-10-2008 02:54 PM

Sarge, I am surprised your front weights did not change more since you removed that old brick TV from the front....LOL.


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