[R-390] Collins R 389 PTO

[DJED1 at aol.com]

It's true the gear train is not complex, but you do need a small machine  
shop to fabricate such a beast.  For the R-390A I wanted readout to 100 Hz,  
but as I recall I wanted 10 Hz steps so the tuning was pretty smooth.  So  
you need 10,000 steps for each rotation of the shaft, then another encoder to 
 track the 10 turns of the shaft.  So you need two 10:1 gear sets with 
split  gears and three encoders, one of which has to be 1024.  
when I think about it, it would probably be easier to figure out how to  
accurately set the corrector stack in an original R-390A PTO.  This doesn't  
apply to the R-389 issue, of course.
Ed
**************2009 3 Free CREDIT SCORES: See Your 3 Credit Scores from All 
3 Bureaus FREE! 
(http://pr.atwola.com/promoclk/100126575x1221797372x1201397989/aol?redir=https:%2F%2Fwww.freescore.com%2FOffers%2FStart%2FFreeCreditRepor
tAndScore.aspx%3FID%3D91831F371F138345B53A153F49D4D872%26siteid%3De927580bf7
)