[NSRCA-discussion] Incedence meters alternative

Sun Dec 17 16:37:25 AKST 2006

Good idea with the wing shucks.  I like it and will remember it.
--Lance

----- Original Message ----- 
From: "Scott Smith" <js.smith at verizon.net>
To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
Sent: Sunday, December 17, 2006 5:55 AM
Subject: Re: [NSRCA-discussion] Incedence meters alternative


> Never having owned an incidence meter, that's pretty much my procedure as
> well Lance.  A 1/2 degree positive pitch on the 18" wing means the L/E 
> cord
> center line needs to be 4mm higher than the T/E cord center line.  This is
> real easy to lay out with just a root rib pivoting on the wing tube.
>
> I'll do one wing using the 4mm number, and then match the second wing by
> measuring the T/E height off the table.  Once done, I'll check the 
> incidence
> using the top wing shucks.  With the shucks in place and a small bubble
> level on each shuck, elevate the tail until the 'master' wing reads level
> and then match the other side.
>
> (I just happen to be at this step this weekend with my current project!)
>
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Lance Van
> Nostrand
> Sent: Saturday, December 16, 2006 7:03 PM
> To: NSRCA Mailing List
> Subject: [NSRCA-discussion] Incedence meters alternative
>
> I got out of this game a few years ago.  Fact is, a height gage, if
> measuring off a flat surface used at the LE and TE is way more accurate 
> than
>
> the meters. It is quite easy to accurately measure the height off a table 
> to
>
> less than 1/32".  On a 18" chord that's 0.1 degrees worst case.  I think I
> can do better than 1/32".  The key is having a flat table (not necessarily
> level).  You may not realize this, but what they call "silestone" is a
> manufactured granite that is pressed in molds.  It's something like 99%
> quartz and some epoxy binder.  It's redeeming feature is that its flatness
> is part of its specification and is molded in.  Unlike real granite that
> must be polished with large wheels and they never give an optically flat
> surface.  Silestone has actual specifications.  I have a table top that is
> accurate to 10 mils anywhere.  Way good enough for our hobby.  By 
> purchasing
>
> from a stone cutter a piece that has a chip in it, I was able to cover my
> work table for $80.
>
> Another nice thing about this investment is that this artificial stone is
> nonporous, which means that CA and epoxy don't really stick.  They can
> easily be scraped off with a razor.  I've even spray painted without a
> dropcloth and just scraped off the overspray from the table.
>
> I realize this is probably a whole new alternative but I thought some 
> might
> be interested.
>
> --Lance
>
> ----- Original Message ----- 
> From: "MKMSG" <mkmsg at cox.net>
> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> Sent: Saturday, December 16, 2006 11:49 AM
> Subject: Re: [NSRCA-discussion] Incedence meters
>
>
>>I agree with Stuart.  My Hangar 9 incidence meter was worthless....plastic
>> parts were a terrible fit and the meter gave very inconsistent results. 
>> I
>> couldn't believe they put that on the market!
>>
>> Mike Moritko
>> ----- Original Message ----- 
>> From: "Dennis" <patternpilot at verizon.net>
>> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
>> Sent: Saturday, December 16, 2006 10:42 AM
>> Subject: Re: [NSRCA-discussion] Incedence meters
>>
>>
>>>I also have both meters. I found the AccuPoint, as are most things that
>>>rely
>>> on gravity to be virtually worthless. Too much friction at the pivot
>>> points.
>>> I also found the Angle Pro to have a loose, sloppy fit on the plastic
>>> parts
>>> and as well useless. I guess you could glue it on but then it could not
>>> be
>>> used for anything else.  I did not find a problem with the meter having
>>> repeatability problems. I use the smart level as well and have had great
>>> results. I made my own mount using the ends from an old Robart meter and
>>> an
>>> old wing tube and socket. The build article was in the K-Factor several
>>> years ago by Rick Allison I believe. If you are going to buy a pre made
>>> incidence meter then I believe you get what you pay for. Spend the money
>>> on
>>> the good one.  By the way a smart level module (not sure if they are
>>> available anymore) cost over $100.00. They can be recalibrated and work
>>> in
>>> any orientation, even upside down as the display flips over so you can
>>> read
>>> it.
>>>
>>> Dennis
>>>
>>> -----Original Message-----
>>> From: nsrca-discussion-bounces at lists.nsrca.org
>>> [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Stuart
>>> Chale
>>> Sent: Saturday, December 16, 2006 8:17 AM
>>> To: 'NSRCA Mailing List'
>>> Subject: Re: [NSRCA-discussion] Incedence meters
>>>
>>> Adam
>>> Maybe I had one from a bad batch.  I remember doing a google search and
>>> reading similar complaints.
>>> Can you wiggle the meter on the mounting bar or have they improved the
>>> plastic to plastic fit as well.
>>> Stuart
>>>
>>> -----Original Message-----
>>> From: nsrca-discussion-bounces at lists.nsrca.org
>>> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Adam 
>>> Glatt
>>> Sent: Saturday, December 16, 2006 11:08 AM
>>> To: NSRCA Mailing List
>>> Subject: Re: [NSRCA-discussion] Incedence meters
>>>
>>> Stuart, yours is definitely defective.  I just did the same test with
>>> mine, and it outputs the same value regardless of how it approaches the
>>> final orientation.
>>> -Adam
>>>
>>> Stuart Chale wrote:
>>>>
>>>>
>>>>
>>>>
>>>> This is the setup I use.  I have 2 short and 2 long bars.
>>>>
>>>> As a side note you can purchase the bars and plastic ends without the
>>>> meter direct from Robart.
>>>>
>>>>
>>>>
>>>> The 2 pictures below are the hanger 9 meter portion placed on the same
>>>> line on my workbench after tilting opposite ways first.  As you can
>>>> see there is a big difference.  If you always go from the same
>>>> direction there is more repeatability.
>>>>
>>>>
>>>>
>>>> The expensive high quality angle meter is
>>>> http://www.aeroperfect.com/index.html
>>>>
>>>>
>>>>
>>>> Stuart
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: nsrca-discussion-bounces at lists.nsrca.org
>>>> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of John
>>>> Konneker
>>>> Sent: Saturday, December 16, 2006 10:01 AM
>>>> To: nsrca-discussion at lists.nsrca.org
>>>> Subject: [NSRCA-discussion] Incedence meters
>>>>
>>>>
>>>>
>>>> Over the winter building season I will need to buy an incedence meter.
>>>>
>>>> Can anyone recommend one of the following or...?
>>>>
>>>>
>>>>
>>>> http://www2.towerhobbies.com/cgi-bin/wti0001p?&W=000727475&I=LXPW71&P=K
>>>>
>>>>
>>>>
>>>> http://www.horizonhobby.com/Products/Default.aspx?ProdID=HAN192
>>>>
>>>>
>>>>
>>>> Thanks!
>>>>
>>>> JLK
>>>>
>>>>
>>>>
>>>> _________________________________________________________________
>>>>
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>>>>
>>>> ------------------------------------------------------------------------
>>>>
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