[NSRCA-discussion] Angular Measurements

[Koenig, Tom]

It certainly is a nice bit of gear...but at 492 Australian Dollars (
thanks to our Dollar plummeting!) ....I think I'll give it a miss for
now!

 

Tom

 

________________________________

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Ed Alt
Sent: Thursday, 23 October 2008 10:20 AM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] Angular Measurements

 

That looks like a really great tool Earl!  Gotta get me one.

 

Ed

	----- Original Message ----- 

	From: Earl Haury <mailto:ejhaury at comcast.net>  

	To: General pattern discussion
<mailto:nsrca-discussion at lists.nsrca.org>  

	Sent: Wednesday, October 22, 2008 5:34 PM

	Subject: Re: [NSRCA-discussion] Angular Measurements

	 

	After reading this thread I checked out the new version of the
Aeroperfect meter. I had looked at the original - but there were several
drawbacks, mostly the weight. The new version appeared to have the
needed improvements, so I ordered one. Very quick delivery - ordered
late Friday and it arrived today. Nicely constructed and the software
works very well. The clamps provided for mounting to a control surface
are a little aggressive for my liking - but they're standard clamps an
can be replaced or modified.

	 

	I just took a quick look at the elevator halves on Partners
(dual servos). Raising the tail to get the surfaces near level
eliminates the need for the clamps for checking "zero matching". Simply
place the sensor on an elev half and click "zero" to zero the reading -
move the sensor to the other elev half (roughly the same place) and read
the offset, if any. Switching the sensor back & forth several times
produced the same readings - gotta love it when an instrument actually
repeats! (I measured the distance from the elev to the bench top with a
digital caliper and confirmed that the elevators were in the same
place.) Clamping the sensor to the surface allows one to measure up/down
travels, again matching each half. 

	 

	I've been setting elevator halves with a digital level (+-
0.1deg), this thing does +- 0.01deg and I saw an opportunity for a
couple of clicks of sub-trim to improve the zero. I usually measure
total travel with "Ivan's Magic Gadget", a short pointer and degree
scale. The Aeroperfect indicated that I'd gotten the matching right, but
indicated a half degree or so more travel than I noted with the pointers
(reading between the lines).

	 

	The unit has a built in "level" that can be assigned, as well as
a manual zero for comparisons. The software has a couple of nice
features, one can switch to large digits - should be great for us old
guys or working out doors where a LCD screen can be hard to read.
There's also a conversion algorithm for converting degrees to inches -
simply input the width of the measured surface.

	 

	So a nice tool that appears, at least, as accurate as other
devices for the same purpose and it's very easy to use. Matt, thanks for
asking the question.

	 

	Earl

	 

	 

	 

		----- Original Message ----- 

		From: rcmaster199 at aol.com 

		To: nsrca-discussion at lists.nsrca.org 

		Sent: Friday, October 17, 2008 10:44 AM

		Subject: Re: [NSRCA-discussion] Angular Measurements

		 

		Thanks Stuart. Looked pretty good from the magazine
article however, as is often the case with such things, one has to
account for the author's experience (unknown in this case)

		 

		MattK

		 

		 

		-----Original Message-----
		From: Stuart Chale <schale at optonline.net>
		To: General pattern discussion
<nsrca-discussion at lists.nsrca.org>
		Sent: Fri, 17 Oct 2008 10:02 am
		Subject: Re: [NSRCA-discussion] Angular Measurements

		I didn't see any responses. I have the prior version of
the aeroperfect meter. Single axis and accurate to .05 degrees I think.
I like it a lot. The most accurate meter I have used for incidence and
surface deflection. It is not a level. Surfaces can be compared to each
other or a table surface but it does not check for being level. Readings
are very repeatable. It would be nice if the sensing unit were a little
lighter when attaching to movable surfaces. 
		Mine has the display with it. Not sure it can hook up to
a laptop as the new one does. 
		 
		Stuart 
		 
		rcmaster199 at aol.com wrote: 
		> Has anyone used this gadget for measuring the various
angles we measure? 
		> 
		>
http://www.rcuniverse.com/magazine/article_display.cfm?article_id=1030 
		> 
		> MattK 
		> 
		> _______________________________________________ 
		> NSRCA-discussion mailing list 
		> NSRCA-discussion at lists.nsrca.org 
		>
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion 
		> 
		> 
		>  
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