I think you're right except for one factor you left out:
The sliminess of the ramp.
Which I suppose is less of an issue on the west coast but I saw a guy damn near
lose a fullsize Blazer on a not particularly steep lake ramp because he didn't
bother to put it into 4wd (because it wasn't steep) but as the weight of boat
hit the trailer as he pulled it out of the water he started to spin and slide
backwards. As soon as he started to slide he hit the brakes but he continued to
slide until the boat started to float...
-Curt
Date: Wed, 14 Oct 2009 14:22:57 -0700
From: tyler <casi...@usermail.com>
Subject: Re: [MBZ] Anyone tow with a W124 wagon?
To: Mercedes Discussion List <mercedes@okiebenz.com>
Message-ID: <4ad64131.2060...@usermail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
<snip>
For pulling up a ramp, I think one could calculate reasonably well the
steepest ramp you could pull a given boat up given (1) the torque of the
engine at the stall speed of the torque converter, (2) the ratio of 1st
gear times the rear differential, (3) the tire outside diameter, and (4)
the combined weight of the entire rig. It's #1 that I expect to be
hardest to find...
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