The formula is not the same for both locked ring gear and locked planetary
gear. This formula is for the locked ring gear and you probably have
the locked planetary. Remove the 1 from the equation and it will come out
right for yours.
Tracy (making a lot of assumptions about your drive)
----- Original Message -----
Sent: Tuesday, June 14, 2005 11:24
PM
Subject: [FlyRotary] planetary gear
ratios
I ran across some information in one of the scientific
newsgroups on how
to calculate the gear ratio of a planetary gear
set.
ratio = 1 + r / s
where: r = number of ring gear
teeth
s =
number of sun gear teeth.
I haven't replace my 3-pinion gear set with a
6-pinion set, because I've
not been able to positively identify it to
where I could call out a part
number. Order strange gearset from the
internet is not what I consider
an efficient way to spend money. So
I went out and counted. 74 teeth
on the ring and 34 on the
sun.
1+74/34 = 3.176
That is not the 2.17 OR the 2.85 from the
Ford gear sets. Is it
possible that the one isn't added in standard
practice, so that what I
actually have is the 2.17 gear set?
--
This is by far the hardest lesson about freedom. It goes
against
instinct, and morality, to just sit back and watch people
make
mistakes. We want to help them, which means control them and
their
decisions, but in doing so we actually hurt them (and
ourselves)."
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