Subject: Another Ford planetary based PSRU
From: ACRE
Date: 11/15/2003, 1:37 AM


 > > Ken Welter wrote:
 > >
 > >    It must be a 2.17 as the ring gear is attached the the prop shaft
 > > and the 3.17 has the planet attached to to the prop shaft like the
 > > 2.85.
 > >   The 3.17 is the same gear set as the 2.17.
 > >   Ross also offered a 1.7 which I believe is the same gear set as the
 2.85.
 > >   When you talk of the pressed steel housing are you talking about the
 > > housing that holds the 6 planet gears ??
 > >
 > >   Ken Welter


George Lendich wrote:

 Thanks Ken,

  I am now fully versed in the planetary i.e. ring gear divided by sun gear
 (+1 for same direction turning).
 Or RING gear (78 teeth) divided by SUN gear (42 teeth) = 1.85

 I can't see how the hell Ross could have got 1.7 out of that matey - however
 I don't have the overdrive planetary to check to see if it's this one.

 Has anybody got the overdrive so that they can give us an answer on that one
 ?
 In the mean time I will ask my contact at Slausons!

 BTW the answer to your last question on the pressed metal for the Housing is
 yes!! However I could be wrong it's either pressed or a very accurate
 pressure cast.
 George (down under)

    HI George

   I just checked and the 3.17 in the same direction rotation is has
74 ring and a 34 sun and this is the same gear set as the 2.17 in the
opposite direction rotation so dividing 34 into 74 gives you the 2.17
ratio now how do you calculate out the 3.17 ? I just spun them around
and counted the revolutions.
  Also I was told that the ring gear on the 2.17 and 2.85 are the same
and can be interchanged, are you sure on the 78 tooth count on the
2.85 ?
  It could be that the Ross 1.7 wasn't even a C-6 base as I have never seen one.

  Ken Welter

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