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Old 03-31-2015, 11:13 PM   #31
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Thanks for the photo, Murff. Different specs for different equipment. I'm also wondering if maybe Jayco measured to the top of the A-frame instead of the underside of the coupler, which seems to be the norm, as shown in this photo from eTrailer:



I fired off an email to the salesman explaining my problem and asking him to verify the trailer's coupler height. Our trailer is being built and isn't available yet, but I'm hoping there's a similar one around their lot somewhere. I'll post back with his response. He's been pretty good with answering my questions so far!
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Old 04-01-2015, 05:17 AM   #32
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is this conflictual information ? some site want you to measure the height of the trailer where the ball sits ( top of the ball) on the trailer and the TV
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Old 04-01-2015, 05:19 AM   #33
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What is the measurment at the top of the ball on the TV ?
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Old 04-01-2015, 07:11 AM   #34
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Well for me it is easier to measure the lower surface of the tt where the ball goes in and not that hard to measure right above the hitchmount where the ball mounts.... when you begin to try to figure out where the ball will ride inside the tongue then it gets sort of questionable... either way it should be a plus or minus 1/2 inch measurement
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Old 04-01-2015, 08:06 AM   #35
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Almost all manufacturers of weight distributing hitches say to ensure your trailer is parallel to the ground, front to rear, measure from the ground to the top of the coupler, then install the hitch head so the top of the ball matches that dimension.

This is copied and pasted directly from the instructions for the Equalizer brand WDH: "With the trailer parallel to the ground, measure from the ground to the top of the trailer coupler."



You will find this on page 10 of the Owner's Manual, here: http://www.equalizerhitch.com/pdf/eq...anual_0111.pdf

This is a pretty simple measurement and removes all the guesswork of what to measure and where. It does not need to be exact, but probably within 1/2".
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Old 04-01-2015, 08:48 AM   #36
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Quote:
Originally Posted by Scoutr2 View Post
Almost all manufacturers of weight distributing hitches say to ensure your trailer is parallel to the ground, front to rear, measure from the ground to the top of the coupler, then install the hitch head so the top of the ball matches that dimension.

This is copied and pasted directly from the instructions for the Equalizer brand WDH: "With the trailer parallel to the ground, measure from the ground to the top of the trailer coupler."



You will find this on page 10 of the Owner's Manual, here: http://www.equalizerhitch.com/pdf/eq...anual_0111.pdf

This is a pretty simple measurement and removes all the guesswork of what to measure and where. It does not need to be exact, but probably within 1/2".
Jayco told me this is how they measure hitch height as well.
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Old 04-01-2015, 09:01 AM   #37
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Quote:
Originally Posted by North of 49 View Post
Thanks for the photo, Murff. Different specs for different equipment. I'm also wondering if maybe Jayco measured to the top of the A-frame instead of the underside of the coupler, which seems to be the norm, as shown in this photo from eTrailer:



I fired off an email to the salesman explaining my problem and asking him to verify the trailer's coupler height. Our trailer is being built and isn't available yet, but I'm hoping there's a similar one around their lot somewhere. I'll post back with his response. He's been pretty good with answering my questions so far!
I saw this on e-trailers web site, it was just telling you how to determine the drop or rise when buying a ball mount. This photo was only part of the photo's in their instructions.
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Old 04-01-2015, 09:41 AM   #38
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If you level your trailer, then back up to it and assemble your hitch using only your eyes to measure you might hit this on the first try. Just remember things are going to drop some when you hook up even with the WD bars adjusted. Use the tape measure to verify your trailer is level. Also use the tape measure to verify your WD bars are doing their job. You need your top of wheel well to ground numbers before and after hookup.
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Old 04-01-2015, 10:12 AM   #39
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make sure you have him LEVEL the trailer on a LEVEL piece of asphalt/ground, then have him measure from the ground to the top of the coupler.

Adjust your hitch to get the top of your hitch ball to be 1 to 1.5" higher. The truck will then squat 2" or so after you hook up. You will then get some of that squat back after you hook up the WD bars. Tilt the hitch head to ensure that bars will be parallel with the trailer tongue when under tension. (at least on my REESE WD hitch).

In the end, the trailer should be level or SLIGHTLY nose down, and your truck should be level (w/in 1/2" at the wheel wells when compared to unloaded heights.)

other than that, contact JAYCO directly and get the specs from their tech department.

Tim
We all have different brand hitches, and initial set up info that each can provide for future forum members will be a bonus.

For REESE hitches, the hitch height is measured to the top of the hitch ball socket. See these links for both round bar and trunion bar hitches.

<http://www.hitchpro.net/application/support/instructions/n67509.pdf>
<http://www.hitchpro.net/application/support/instructions/n66073.pdf>
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Old 04-01-2015, 10:16 AM   #40
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Here is the Installation Instructions manual for your Curt WDH: https://www.curtmfg.com/masterlibrar..._17330_INS.PDF

As I looked through it, it says to measure from the ground to the top of the coupler. So I would say that assembling your WDH before you get the trailer might get you home OK, but you will have to tweak it again when you get it home. To get it correct, you will have to have the trailer there so you are working from the dimensions you observe, not from what someone else is telling you.

Remember, you can only safely torque and re-torque the shank bolts a few times before you start stretching the bolts and threads. So a ballpark setting will get you home, but you might want to wait until you actually measure your trailer's coupler height before even torquing the bolts the first time.

just my opinion.
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