Gas spring issue... - Fiberglass RV


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Old 07-21-2017, 05:40 PM   #1
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Name: pat
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Gas spring issue...

My trailer's hinge are on rear of trailer are pressing to hard on exterior of wall and damaging exterior wall. When top lifted without springs no issues,,,,,Placement is center on the top and angled to the back. Should I get lower LB graded springs ? Problem the lower the smaller in size they get? Or do I reinstall no drilling closer to the front?
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Old 07-22-2017, 11:22 AM   #2
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gowesty.com has cylinder kit for VW Westfall top to assist raising. They look like they may be longer and work better by moving the lift point forward. Moving the cylinders should reduce stress on the himge.
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Old 07-22-2017, 01:51 PM   #3
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Name: K C
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I would keep on being the primary lift spring when opening the trailer and let the small ones be your assistant You should trust in the engineers who decided on the placement of those gas lifts, they got the right balance of location for helping to hold the roof open. What your mistake is was thinking that the gas shocks were meant to do all of the work of the lifting.

The main issue here is that the walls are not sufficiently tied together because of the large cutout area and therefore they will flex and spread apart no matter where you put the shocks or how strong the shocks are. The further forward from the aft end of the opening you move the greater the tendency will be for the walls to spread until you hit the mid point of the trailer which is where the maximum for the weakest area with the most tendency to spread will occur. So the advice of the person who suggested to move them further out their current location should not be followed as it will increase the issue rather than decreasing it.
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Old 07-22-2017, 01:58 PM   #4
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Auctially my issue is not in the lift but bringing the top down. The force at which is applied to the hinge area when pulling the topdown is the issue. I'm quite comfortable in assisting as much as I can with helping the springs lifting and quite happy with that as long as they do their job simply holding the top up.
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Old 07-22-2017, 02:25 PM   #5
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Engineering cahnge

My 84' trailer was the prototype. In 86' they changed to the piano hinge design with a stronger with a beefed up rear wall.
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Old 07-22-2017, 03:30 PM   #6
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The upper end of the cylinder is like the center bar on a seesaw. Moving the cylinder further forward will transfer tension forward and relieve pressure on the hinge when lowering the top.
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Old 07-22-2017, 03:35 PM   #7
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PS Moving cylinder forward is cheapist and easiest way to reduce tension on the hinge. You will need longer cylinders. The cylinders that goeesty.Com sells are much longer than what you have. I put these cylinders on 3 VW Westies.
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Old 07-22-2017, 03:35 PM   #8
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So keep the bracket where it is on trailer shell and move bracket on top closer to the front allowing for longer spring? I'll need longer springs but keep same weight requirements ? Thanks
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Old 07-22-2017, 03:37 PM   #9
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PSS that's gowesty.com.
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Old 07-22-2017, 03:42 PM   #10
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It may be worthwhile to move forward on trailer also but that's something you can look at when you get new cylinders.
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Old 07-22-2017, 03:46 PM   #11
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How much further on the top would you recommend ?
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Old 07-22-2017, 03:47 PM   #12
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Trying to avoiding excessive holes...
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Old 07-22-2017, 04:05 PM   #13
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Go to gowesty.com and enter pop top in the search area and touch or click on the pix of the cylinders and look at the pictures. You can probably adjust from where Gowesty puts them if you need to. Holes can be filled, short bolts can do it. Work on getting stress of hinge.
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Old 07-22-2017, 10:46 PM   #14
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just wanted to say interesting trailer, never seen one like it before
Jan
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