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Old 04-18-2015, 03:46 PM   #11
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Blackhat, it takes two weighs on the Cat scale to get your tongue weight. Weigh the truck with your hitch in the receiver. Then hitch up the trailer without the weight distributing bars and cross the scales again. The difference in your truck weights is the tongue weight.
The Cat scale will also give you independent TV axle weights. With two weighings, you can see the amount of surprising amount of weight the camper transfers from the front axle to the rear.

In my case, the 420 Lb tongue added 600 Lb to the rear axle with the 180 lb difference transferred from the front.
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Old 04-18-2015, 07:10 PM   #12
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Old 04-19-2015, 05:34 PM   #13
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Has anyone checked the accuracy of the bathroom scale method against the Sherline? I'm reluctant to spend $150.
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Old 04-19-2015, 10:45 PM   #14
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Riverdaze, you just need to Google the reviews on Amazon and other businesses that sell the product to see they vouch for accuracy. A search within the Forest River Forum will also give you an idea of how well thought of this product is. Unlike bathroom scale, the Sherline tongue scale is made specifically for this purpose.
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Old 04-20-2015, 01:22 AM   #15
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Riverdaze, you just need to Google the reviews on Amazon and other businesses that sell the product to see they vouch for accuracy. A search within the Forest River Forum will also give you an idea of how well thought of this product is. Unlike bathroom scale, the Sherline tongue scale is made specifically for this purpose.
Thanks Handbuilder. I wasn't questioning the accuracy of the Sherline. I wondered how good the above bathroom scale method was using the Sherline as the de facto standard. I'm cheap, but I also don't want to be 20% over on tongue wieght.
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Old 04-20-2015, 06:47 AM   #16
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Thanks Handbuilder. I wasn't questioning the accuracy of the Sherline. I wondered how good the above bathroom scale method was using the Sherline as the de facto standard. I'm cheap, but I also don't want to be 20% over on tongue wieght.
I have checked. I used my TT and took multiple samples. I carefully made the bathroom scale one and got different weights on all of the samples, all about 50# range. On my Sherline, the sample weights were practically identical to each other. Now between the bath scale and Sherline was about 75#, with the bath scale being low on most samples.

BTW, my tongue weight was 860# via Sherline.
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Old 04-20-2015, 08:28 AM   #17
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I'm cheap, but I also don't want to be 20% over on tongue wieght.
Then find a local CAT scale. For less than $20 you can get all relevant weights accurate to 10 Lbs by weighing everything hitched and unhitched.

Even cheaper, find a nearby gravel or stone seller, go by on a day when they are not busy and ask to use the scale for a few minutes. Weigh the camper axle with the TV just off the scale. Then lower the tongue jack onto the scale until the coupler comes off the hitch ball. The difference is, of course, the tongue weight.
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Old 04-20-2015, 10:48 AM   #18
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Thanks RPAspey. That was the comparison I was asking about, though the result was not the one I hope for. lol I am towing with a Sienna, which does not have a lot of wiggle room on the weights, so I should probably invest in the Sherline.
Thanks, also to Pooneil - I did do the CAT scales last year and did three weighings [at the same time] and was charged $30, despite the prior explanation that it would be $14. We do have a gravel purveyor, I had not thought of that possibility! Livin' and learnin'.
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Old 04-20-2015, 10:53 AM   #19
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I bought one of these same scales because the CAT scales would not weigh my tongue weight. Now I do it myself. Works great!
I am sure the reason they would not allow you to disconnect the trailer on the cat scale is because of the amount of time the scale would be out of action.
Time is money.

They might also be afraid someone would drive off leaving an abandoned trailer on the scale.
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Old 04-20-2015, 10:59 AM   #20
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Riverdaze, you have to tell the CAT operators 'second weigh' for the second and third weightings.


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