Topica Loopframe_Guzzi Archive


Subject: Re: Re Bike Lift

Author: Zerhackermann .

Date: Apr 19, 2001, 5:43 PM

Post ID: 1706388313


If it is the same lift I am thinking of, any higher grade bolt will be
better. The ones that come on the lift are like warm peanut butter.

I just built my own lift. Probably over built it. but it makes a nice big
table. Holds the Ambo up with a foot or so workspace on each side. Perfect.



 
This is a response after postin to another list. Rick Woods

--------- Forwarded message ----------
From: andrew edwards <eddiet-@yahoo.com>
To: classic-@yahoogroups.com
Cc: ind-@starklite.com
Date: Thu, 19 Apr 2001 06:03:57 -0700 (PDT)
Subject: Virtual-@yahoogroups.com
Message-ID: <20010419130357.8640.qmail@web6103.mail.yahoo.com>

RE.Bike Lift.
Hi, everyone. Had to reply to this as I feel some
of the recommendations in the replies about bike
lifts, are in themselves, possibly dangerous. Grade 8
bolts are certainly harder than grade 5, or lesser,
and have a greater tensile strength, but I have always
been led to believe that grade 5 bolts possess a
higher shear strength than grade 8. It seems to me
that the failed bolts described, would be in shear,
rather than tension. If these bolts form the pivot in
a scissor arm arrangement, it is also important to
keep the arms as close together as possible, to reduce
the twisting of the bolt in the pivot hole. This
increases the shear factor substantially, if the bolt
is allowed to twist. Use loctite and double locknuts
on them if this is the case. These thoughts come
from 20+ years in the spanner game, but I am the first
to say check with an engineer, if in doubt. Regards, Eddie.

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