REFLECTOR: Speedbrake, descents, and shock cooling.

[Dr. Golf]

I have a Garmin 500W and set the Vertical Speed
warning for 500 fpm descent 2 miles before the
destination. (You can calculate that with air spleed
of 180 knts = 3 miles per minute, divide the thousands
of feet by 500 and multiply by 3 gives you the
distance from destination to start your descent. Pull
manifold to 16 with full in prop, and the nose will
drop gradually. Titrate the airspeed with the throttle
to stay below the red-line (200knts XLRG). When you
get to the desired altitude, 11+ manifold pressure
will give me 120 knts straight and level. If you plan
to reach pattern altitude a few miles early, the speed
will gently bleed off and you are there.  
I drop my gear and I get 100-110knts and 500 ft per
min and start down the glide slope. Then I reduce the
MP speed bleeds to 100Knts. when I know I have the
runway made, I pull the power and usually cross the
fence at 90 knts. The I deploy both rudders and the
speed just bleeds off and I look forward the the
"Greaser". 
I hope this helps.
PS: The speeds vary depending on the outside temps and
your plane. So you determine what your plane does
straight and level at say MP of 11 and 16 and what
descent the gear down will provide, then just set up
the numbers every time and work from there. 


 
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