Incidence meters

Wed May 21 15:09:01 AKDT 2003

I use 3 Smart Tool.
With the base of Robart incidence meter.
This is perfect way to measure the incidence of entire plane. I don't have
very good building table which is the reason for me to use 3 of these.

both side of wings, both side of stab, both wing and single stab etc.

Frank Capone sent me the pictures on how he made the adapter to put smart
tool.
If anyone need the pictures, I have them.

I may be able to upload them to my homepage, but will take a while because I
currently have more than 50 pictures that needs to be uploaded and
documented.

So, for the pictures of the adapter, E-mail me privately or Ask Frank
Capone.
Hope this helps,

Ihncheol Park
-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of Dennis Cone
Sent: Wednesday, May 21, 2003 8:17 AM
To: discussion at nsrca.org
Subject: RE: Incidence meters

Some years ago I saw in a K-Factor an incidence meter using a digital smart
level. I wanted something better than what I was using so I bought the
level, cut the vee shaped wing holders off the Robart, threw the rest of the
Robart into the garbage and made my own rail to hold the digital incidence
meter. This meter will measure to a tenth of a degree. I used dial calipers
to measure the light ply used in the uprights and used a wing tube to make
the rail. Works perfect. I don't believe this level is available anymore but
have seen something similar on the net. Now has a laser built into it. The
Smart level was a module placed into a longer level rail and was
interchangeable from one length to another.

Dennis Cone

-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On
Behalf Of Kenneth Blackwell
Sent: Wednesday, May 21, 2003 7:22 AM
To: discussion at nsrca.org
Subject: Re: Incidence meters

Paul,

The line that you mentioned is the "zero thrust line" and it is determined
by the designer when the airplane is laid out. If you are starting with a
kit, the kit manufacturer should provide information that will allow you to
set up the incidences corectly. Sometimes this is accomplished by specifying
how to set the fuselage up on a flat surface, by blocking up the tail a
specified amount. Then, you can measure up from that flat surface to the LE
and TE....and calculate the incidence angle with trig....etc. etc. Another
way that manufacturers specify the incidences is by scribe lines or mold
lines on the sides of the fuselage.

In the end, the most accurate way to determine incidences is by measuring
LE/TE from a good flat surface....as Jerry Budd has already stated earlier.
We need to be able to set incidences to an accuracy of about 0.1 deg and
this just isn't possible with any of the devices mentioned...so far.

Cheers,

Ken Blackwell

----- Original Message -----
From: "Paul Lawrence" <pwl45 at yahoo.com>
To: <discussion at nsrca.org>
Sent: Wednesday, May 21, 2003 7:56 AM
Subject: Re: Incidence meters

> Speaking of incidence, what is the best way to find the thrust line for
> measuring the incidence?
>
> ----- Original Message -----
> From: "David Wartel" <dwartel at attbi.com>
> To: <discussion at nsrca.org>
> Sent: Tuesday, May 20, 2003 11:23 PM
> Subject: Re: Incidence meters
>
>
> > The book, "Building a Pattern Airplane" has a how-to on building a very
> > accurate incidence meter from a digital level and parts from a Robart
> > incidence meter. I obtained a digital level at a reasonable price on
> E-bay.
> >
> > Here's the link to where you can buy the book, which is excellent.
> >
> > http://www.ranchcreek.com/airplane/default.htm
> >
> > Dave
> >
> >
> > ----- Original Message -----
> > From: "Ron Van Putte" <vanputte at nuc.net>
> > To: <discussion at nsrca.org>
> > Sent: Tuesday, May 20, 2003 11:11 PM
> > Subject: Re: Incidence meters
> >
> >
> > >
> > >
> > > ORLANDO FRETS wrote:
> > >
> > > >I'm looking to buy an incidence meter. Can anyone shed some
experience
> > with the Great Plane laser and the Robart type. Which is a good
> > recommendation?
> > > >
> > > >
> > > >
> > >
> > > Get Jerry Budd's laser meter.  It's not cheap, but is very good.
> > >
> > > Ron Van Putte
> > >
> > >
> > > =====================================
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> > >
> >
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