[NSRCA-discussion] Right Thrust Measurement?

[rcmaster199 at aol.com]

It's a quick and easy calculation if you have a calculator with inverse trig functions.
 
sin-1 (difference /diameter) will give a good approximation
 
MattK
 
 
-----Original Message-----
From: twtaylor at ftc-i.net
To: nsrca-discussion at lists.nsrca.org
Sent: Tue, 29 Aug 2006 8:25 AM
Subject: Re: [NSRCA-discussion] Right Thrust Measurement?


Thanks Pete but there's nothing on the chart but zero's?




From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Peter Pennisi
Sent: Tuesday, August 29, 2006 8:15 AM
To: 'NSRCA Mailing List'
Subject: Re: [NSRCA-discussion] Right Thrust Measurement?


 
This chart should help you out
 
左右の差12inch13inch14inch15inch16inch17inch18inch
１０ｍｍ１．８８°１．７３°１．６°１．５°１．４°  
１２ｍｍ２．２５°２．０８１．９１．８１．７１．６ 
１４ｍｍ２．６３°２．４３２．25２．１２．０１．８ 
16ｍｍ３．０°２．７７２．６２．４２．２２．１２．０
18ｍｍ３．３８°３．１２２．９２．７２．５２．４２．２５
20ｍｍ  ３．２°３．０°２．８２．６５２．５
22ｍｍ    ３．１°２．９°２．７５°

 
 



From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of twtaylor
Sent: Tuesday, 29 August 2006 10:09 PM
To: nsrca-discussion at lists.nsrca.org
Subject: [NSRCA-discussion] Right Thrust Measurement?
 
Godd morning boys and girls. Help me out here with a Geometry lesson if you will.
 
I'm trying to come up with an easy way to measure the right thrust in my airplane. The seemingly simple way ,for me anyway,  has been to measure from the elev hinge line to the prop tip with the prop level. With a 17" prop from the elev comes out to be 1" total difference from one side to the other. So I drew a line 8.5"  at the end of the line  another line @ 90 degrees I put a dot at 1/2" making a tirangle. Then I used my digital level, I don't have a protractor handy, and came up with almost 5 degrees of right thrust. This airplane acts like it needs more right thrust as it's carrying a bit of right rudder trim and at high throttle I need a bit more. This is a YS1.60 on a 17x12 APC. Is this near right? All the posts on RCU seem to be around 3 degrees. Is this a correct way to get the measurement correctly? Perhaps someone has a better way? Thanks
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