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Re: Need engineering consult

Subject: Re: Need engineering consult
From: "George P. Dausch IV" <>
Date: Tue, 13 Apr 1999 17:44:45 -0400
Just thinking out loud here.  I assume that you looked at and compared
the trailers that the mfr's sell with the lifts already installed.  How
do they do it?

My second thought is that you probably don't want to secure the lift to
the trailer other than at the floor.  The trailer is the weak link, and
the walls probably do flex at speed, basically undulating over the
terrain and in the wind.  I would do some serious securing to the floor
with plates and through bolts, making the base integral with the chassis.
 Then I would have some kind of drop in place x-braces, one each for the
short and long length of the lift, running diagonally, to be placed after
raising to form a completely rigid assembly when in the raised position.
On Tue, 13 Apr 1999 11:55:21 -0700 writes:
>     Recent trailer chat made me ponder if there is someone in 
>     that can assist.
>     I have an enclosed 26' (floor) trailer.  It is 8'6" tall.  I 
>bought an 
>     hydraulic four column lift (backyard-buddy) so that I can get two 
>     into the box trailer.  
>     It is in place and functional.  
>     It works great.
>     Question:  How to secure it to the trailer.  The trailer has 
>     channel (1.5") uprights (studs) on 16" centers.  The inside wall 
>     .030" aluminum and the outside is .050" aluminum.  I know that 
>     aluminum is screwed into the uprights every 6" thereby "shearing" 
>     wall pretty well.  It however must flex as it moves along the 
>     How to install a very rigid steel structure (lift) within a 
>     box?  If I attach it to the walls it may tear the trailer -as the 
>     trailer rolls along the road... 
>     Securing it to the floor is simple.  But, what about the top of 
>     posts?  I don't want the thing to move with a car on it...
>     Any insight?
>     Mordy 

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