----- Original Message -----
Sent: Saturday, January 12, 2008 8:30
AM
Subject: [FlyRotary] Re: Angles
Hi George,
Several folks have responded to your question concerning
angles, for what it is worth I also got 5.729 degrees.
There are a couple of formulas you can use. One
common approach is to use
ArcSin, but unless you have a convenient
ArcSin function available that can be problematic.
So instead I like to use this one for y/r (y being
the vertical length of your angle and r the horizontal
length) Degrees = y/r * 180/pi = 3/30*180/3.1456
= 5.729 deg. This way you don't need
a table/function of ArcSin.
Ed
----- Original Message -----
Sent: Friday, January 11, 2008 7:42
PM
Subject: [FlyRotary] Angles
Ed,
I measured the taper of the flywheel taper with
a ruler, the draft is 3mm in 30mm. I checked that with a dial indicator and
it was correct - how does one derive the angle of that?
Is it 6 degrees?
George (down
under)