Paul,   I bought an F350 super duty Ford transfer case planetary last week
  on e-Bay for $87.50 with free shipping. It is from a 4407 series and the
  ratio is 2.72 to 1.   The sun gear and six pinion planetary weigh 10-1/4
  pounds the ring gear 2 pounds and the input splined range adapter is 1/2
  pound, total  12-3/4 pounds.  The planet orbit diameter is 4.99" and the
  ring gear pitch diameter is     6.239" with an OD of 7.022"  The planet
  gears are helical and have a width of 1.123" Torque capacity is much
 higher
  than the E4OD since it sees the 2.85 torque multiplication of the
  transmission.  As expected it shows no wear because it is only engaged
 when
  the 4 wheel drive is in low lock. It doesn't look like any machine work
  will
  be necessary on these parts but if I use the stock mainshaft that will
 need
  shortened. The range gear slider which inputs to the planetary has a large
  fine tooth spline and there are some bearing seats on the shaft that make
  it  usefull. I figure a hollow output propshaft over the output spindle of
  the planetary carrier. The intended application is on a turbocharged
  quadrotor which might get me out of my comfort zone with the E4OD output
  shaft diameter. Possibly someone will start making  something with a
  constant speed prop before I need it, if not this looks like a good choice
  so far.

  george grimes

  Take some pictures George. Sounds good.

  Paul Lamar

 George & Paul,

 Can you please clarify this a bit - I have some trouble to identify
 which transmission you are referring to. F350 has been sold with:
 4R100 4-speed
 5R110 5-speed
 6R150 6-speed
 http://en.wikipedia.org/wiki/Ford_Super_Duty#Transmissions

 4R100 and E4OD should share the same parts, right? So, that hefty
 6-pinion should be from 5 or 6-speed tranny - but there seems to be no
 2.72 ratio listed...

 OR, is it just a part of F-series 4WD driveline, not a part of
 transmission box itself ?!?

 Cheers,
 Petri

 Yes it is a separate box that goes behind the regular transmission
 for getting power to the front wheels. Mostly used off road.
 It is only in the super low gear range at very low speeds for climbing
 steep hills or pulling heavy loads like plows :)

 Paul Lamar



Petri,    search words "warner 4407 exploded view"  The one I showed in the
picture is from an F350 super duty 7.3L diesel for 1996 and 1997.  The
second picture in the first post is for a later model of the transfer case
which I included for the cut away view.In the exploded view part #35 is the
oil pump. I chose this one for the splined output with a retaining nut for
the drive shaft flange. There is also a warner 4470 which is similar  and
used in GMC and Hummer.


I will attach parts blow ups of the six pinion
candidates from  borg warner. One parts list showed an elastomeric coupling
but I don't see what it could be from the exploded view. One option is a PTO
gear which mounts on the planetary spindle. I did not notice any reference
to ratios other than 2.72 for borg warner. Since Ford is associated with
Mazda that is where I started looking. There are also offerings from New
Process. They are the people who supplied dodge GTX and roadrunner
transmissions which except for a brass shift fork were unbreakable. This
company is now called "new process" and I would expect a slightly different
ratio from their models. They seem to use a splined slip joint on the output
shaft as used on rear drive full size cars.

        I am hoping the stock mainshaft is gun drilled for the oil pump as a
starting point for a constant speed prop. The pump shows an inlet hose but
no clear outlet from the pump. I have a Ford  F350 truck shop manual CD on
order and may learn more there.

       This week I hope to freeze the design on the airframe so I am trying
different wing areas and CG positions in X-Plane. I reconfigured the Rhino4
model last week while the workstation was crashed so it is mainly small
changes to the flight model to verify the handling and speed are optimized.

george grimes