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Re: Other: Rudder axis
By:Bill Hamm
Date: 1/10/2009, 8:12 am
In Response To: Re: Other: Rudder axis (John Monroe)

: Who know where these conversations take us but it took me out into the dark
: cold pole barn to get my radius gauges to see what my radius es on the
: rudder and leeboard actually are. I did the math on the NACA 0012 for the
: leading radius 1.25 cord and 1.58% if it. I couldn't believe my eyes. .019
: or only 19 thousands. Very small, about the size of the led in a pencil. I
: checked my 0012 radius and it is 1/8 inch,.125. The lee board NACA 009
: would be even smaller but I put a 3/8 inch radius on it, .375. So I guess
: the leading edges are in theory almost sharp. I would rather have a larger
: radius that would take dings better.

: John

Hi John,

It's not really rocket science, unless you're racing. A couple percentage points difference in drag really doesn't matter a heck of alot :)

Bill H.

Messages In This Thread

Other: Rudder axis
eric -- 1/7/2009, 9:30 pm
Re: Other: Rudder axis
johne -- 1/8/2009, 12:49 pm
Re: Other: Rudder axis
John Monroe -- 1/8/2009, 4:18 am
Re: Other: Rudder axis
eric -- 1/8/2009, 11:08 am
Re: Other: Rudder axis
Peter Sebbage -- 1/8/2009, 7:25 am
Re: Other: Rudder axis *Pic*
John Monroe -- 1/9/2009, 5:04 am
Re: Other: Rudder axis *Pic*
John Monroe -- 1/9/2009, 5:07 am
Re: Other: Rudder axis
Bill Hamm -- 1/9/2009, 8:39 am
Re: Other: Rudder axis
John Monroe -- 1/10/2009, 6:00 am
Re: Other: Rudder axis
Bill Hamm -- 1/10/2009, 8:12 am
Re: Other: Rudder axis
Bill Hamm -- 1/10/2009, 8:13 am
Re: Other: Rudder axis
Bill Hamm -- 1/9/2009, 8:27 am
Re: Other: Rudder axis
John Monroe -- 1/10/2009, 4:59 am
Re: Other: Rudder axis
Bill Hamm -- 1/10/2009, 8:32 am
Re: Other: Rudder axis
Reg Lake -- 1/9/2009, 10:50 am
Re: Other: Rudder axis
Bill Hamm -- 1/9/2009, 11:34 am
Re: Other: Rudder axis
Reg Lake -- 1/9/2009, 5:14 pm
Re: Other: Rudder axis
Bill Hamm -- 1/10/2009, 8:09 am
See Erics response
Reg Lake -- 1/10/2009, 12:48 pm
Re: See Erics response *Pic*
eric -- 1/10/2009, 1:26 pm
Re: See Erics response
Reg Lake -- 1/10/2009, 1:51 pm
Re: See Erics response
eric -- 1/11/2009, 1:23 pm
Thanks Eric
Reg Lake -- 1/12/2009, 10:25 am
Re: Other: Rudder axis *Pic*
eric -- 1/9/2009, 11:34 am
Re: Other: Rudder axis *LINK*
Glen Smith -- 1/9/2009, 12:12 pm
Re: Other: Rudder axis
Bill Hamm -- 1/8/2009, 12:38 am
Re: Other: Rudder axis
JohnK -- 1/8/2009, 12:00 am