Posted for Sky2high@aol.com:
 In a message dated 12/22/2004 11:31:57 A.M. Central Standard Time,
 ian.crowe@sympatico.ca writes:
"""
 Re Scott's post of 12/21/04 I was fascinated to  see a figure of 25lb given
 as a test parmeter to determine the effectiveness  of the gas spring used for
 emergency extension of the nose gear.
 
 I presume that this is a calculated figure using  the lengths of the mving
 parts of the mechanism related to the 100lb gas  spring.  Could Scott tell us
 where this figure came from and whp  originally devised it.  I hafd been
fussing
 over the item on the annual  which calls for a test to verify the gas spring
 and had not as yet come up  with an in situ test. takung the gas spring off
to
 test it is a  pain.
"""
 
 Ian,
 
 As best I can remember, an LML list member did just such a calculation based
 on the 100 pound spring and the "levers" thru which it acts for the  320/360
 short engine mount.  I do not remember the name and I am  unsophisticated in
 archive searches.  I actually use the in air test at 90  KIAS rather than the
 86 to check the spring.  Perhaps I should move that up  to 100 KIAS - no
worry
 if it pushes the nose gear out at that speed.
 
 No inner gear doors? - I would freeze my bippy unless I sealed the many
 holes in the cockpit closeout rib.  Besides that, the Spitfire had more than
1000
 HP.
 
 Scott Krueger  AKA Grayhawk
 N92EX IO320 Aurora, IL  (KARR)