[modeleng] Re: Saddle keys and etc.
- From: "alanjstepney" <alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Thu, 14 Oct 2004 10:46:55 +0100
Wilfreid, I think Allen meant the key to go in to the face of the
wheel/axle, and not through the wheel into the axle.
I reckon that procedure, screw half-and-half, is OK as it has been used for
many years without problems.
alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
www.alanstepney.info
Model Engineering, Steam Engine, and Railway technical pages.
----- Original Message -----
From: "Wilfried Vermeiren" <vermeiren.wilfried@xxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Wednesday, October 13, 2004 8:13 PM
Subject: [modeleng] Re: Saddle keys and etc.
-----------
Also, as to "round keys", would two 5-40 (5 BA) screws
installed 180 degrees apart be proper for a 1/2" shaft
with half the hole in the wheel and half in the shaft?
-----------
Just an opinion but I think this is asking for some wobble afterwards.=20
I was always told NEVER to fix a pulley, handwheel or whatever to a =
shaft
using one or two opposite positioned setscrews but instead to place =
always
two at 120=B0. The reason is that the direction of the pull is on the =
opposite
side from them nicely in-between the remaining 240=B0. Giving a sort of
fixture equal to the tree legged milk chair.
Since you fix the two screws in-between the axle and the wheel and =
probably
in doing so put some stress, drilling and tapping, in that place I would
rather like to seen then at 120=B0
Don=92t know off hand the size of 5 Ba but one looks sufficient for a =
12.7mm
axle.=20
Regards
Wilfried Vermeiren
http://users.skynet.be/modelbouw.wilfried=20
updated.
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