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Old 05-29-2010, 06:01 PM   #15
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The easiest way to measure tongue weight is to use a house scale and a fulcrum and multiply the scale reading by the fulcrum leverage factor. Ken
Ken...

Anxiously awaiting your return and full explaination. But, in the meantime, I will say this to see what we get for comment:

Your statement sounds a little over-complicated; Why would one need to deal with a fulcrum calculation. The fulcrum would be the axle (or axles), and would be a constant if the trailer was loaded. So why would one need to do more than just place a scale under the tongue of a loaded trailer to find how much weight was bearing on the trailer hitch?
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Old 05-29-2010, 11:38 PM   #16
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I will post a simple sketch of where you place the scale, where you place the tongue and the distances to measure.

I found the same sketch for you so I don't have to get home to the one on my other computer......HERE

Or you can but a Sherline v
pin/tongue weight scale at a lot of camping supply stores.

Ken
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Old 05-30-2010, 08:32 AM   #17
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You see many pulling weight way beyond the capacity of the class C chassis. I am not saying you can't, but point out where you will be which is probably over the ratings for the chassis and the problems you may encounter.

How big is your C? The larger ones also have a tendency to what is referred to as Bump Steer or Roll Steer. As you roll down the highway, the coach has a tendency to roll from side to side which requires a constant see-saw steering correction. The cure for this is id large heavy duty anti-roll barswith urethane bushings and Bilstein shock absorbers on the front and rear. The anti-roll bars supplied by Ford are not up to the job of controlling the side to side roll of the large box added to the chassis.

They also have a tendency to have the engine cover and front floor get very hot when driving in warm and hot weather. I added a 3/8" thick foil backed fiber high temp insulation under the carpet and the back side of the engine cover. The best insulation to use is from J.C. Whitney, not the foil backed bubble stuff from the home improvement centers or Camping world.

Ken
excellent info here...now that we have taken our RV on a decent trip I appreciate what you mentioned concerning the side to side roll...I will look into this when I return...thanks again for sharing your knowledge
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Old 05-30-2010, 09:02 AM   #18
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You see many pulling weight way beyond the capacity of the class C chassis. I am not saying you can't, but point out where you will be which is probably over the ratings for the chassis and the problems you may encounter.

How big is your C? The larger ones also have a tendency to what is referred to as Bump Steer or Roll Steer. As you roll down the highway, the coach has a tendency to roll from side to side which requires a constant see-saw steering correction. The cure for this is id large heavy duty anti-roll barswith urethane bushings and Bilstein shock absorbers on the front and rear. The anti-roll bars supplied by Ford are not up to the job of controlling the side to side roll of the large box added to the chassis.

They also have a tendency to have the engine cover and front floor get very hot when driving in warm and hot weather. I added a 3/8" thick foil backed fiber high temp insulation under the carpet and the back side of the engine cover. The best insulation to use is from J.C. Whitney, not the foil backed bubble stuff from the home improvement centers or Camping world.

Ken
excellent info here...now that we have taken our RV on a decent trip I appreciate what you mentioned concerning the side to side roll...I will look into this when I return...thanks again for sharing your knowledge
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Old 05-30-2010, 09:08 AM   #19
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Ken...

Anxiously awaiting your return and full explaination. But, in the meantime, I will say this to see what we get for comment:

Your statement sounds a little over-complicated; Why would one need to deal with a fulcrum calculation. The fulcrum would be the axle (or axles), and would be a constant if the trailer was loaded. So why would one need to do more than just place a scale under the tongue of a loaded trailer to find how much weight was bearing on the trailer hitch?
The reason for the fulcrum method with a bathroom scale is so that you can get a measurement. The bathroom scale is limited to about 300lbs or so, correct? If the tongue weight is in excess of that amount you use the fulcrum to take some of the weight off the scale and you simply multiply by the correct factor to get actual tongue weight...but it does sound complicated...
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Old 05-30-2010, 09:51 AM   #20
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Ahhh, maybe that's the reason.

That sketch seems vaguely familiar... like somewhere out of my past. Probably forgotten wilth all the other stuff I used to know like spelling and math, verbal skills....
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Old 05-30-2010, 01:58 PM   #21
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forester 2008, the best way to find out what you can safely tow 4 down is to get Motorhome Magazine's Dinghy Tow Guide. I think you can find it on their website; www.motorhomemagazine.com It will give you a lot of good information.
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