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Trailer ramp springs


 
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Wayne in NE
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Joined: 02 Oct 2016
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PostPosted: Sun Jul 16, 2017 2:51 pm    Post subject: Trailer ramp springs Reply to specific post Reply with quote

I have a gooseneck trailer, with a deck about 10 inches lower than a deck over and with drive over fenders. The two ramps are five feet long, 18 inches wide and are fastened in the vertical position for transport. On tractor rides I've been locking the ramps back in the vertical position after I've unloaded the tractor to take the pressure off the springs. If the ride last about 5 or 6 hours, am I doing something unnecessary or will I be damaging the ramp springs? Thanks!
Wayne
 
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D beatty
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Joined: 23 Jan 2013
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PostPosted: Sun Jul 16, 2017 7:35 pm    Post subject: Re: Trailer ramp springs Reply to specific post Reply with quote

I don't think it will hurt anything. I go to pulls and shows and every body leave rams down all day and some several days at shows and have never heard of anybody having trouble with springs.
 
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showcrop
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Joined: 13 Dec 2000
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Location: Chester NH

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PostPosted: Mon Jul 17, 2017 4:43 am    Post subject: Re: Trailer ramp springs Reply to specific post Reply with quote


Pretty much any spring will take its designed load for many years without deforming. It's the overloads that damage them. I bent the axles on one trailer, but the springs were still good. I used to break leaves on truck springs regularly, but I believe that the cause was shock on top of a full load.
 
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BarnyardEngineering
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PostPosted: Tue Jul 18, 2017 9:44 am    Post subject: Re: Trailer ramp springs Reply to specific post Reply with quote

You mean the lift assist springs on the ramps, right?

Won't hurt a thing to leave them down for a few hours.
 
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Indiana Ken
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Joined: 10 May 2011
Posts: 1183
Location: Northern Indiana

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PostPosted: Tue Jul 18, 2017 6:46 pm    Post subject: Re: Trailer ramp springs Reply to specific post Reply with quote


A properly designed spring application is no different than a bolt torqued to spec in a properly designed joint. Both are stretched, but within their yield limit. The spring should not relax if left in the loaded position.
 
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VicS
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PostPosted: Fri Jul 21, 2017 8:36 am    Post subject: Re: Trailer ramp springs Reply to specific post Reply with quote

A spring maker told me, springs break on
the rebound! Going farther than designed
for. Bet your old truck didn't have any
shocks. Before you guys say I broke a
spring on my truck and it had shocks. Bet
they were shot.
 
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mmfan55
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PostPosted: Sat Jul 22, 2017 4:58 pm    Post subject: Re: Trailer ramp springs Reply to specific post Reply with quote

In bygone years: auto and truck hoods had springs on the hood hinges to keep the hood in raised position. Spent much more time extended with hood in closed position than open.
 
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