Other incidence meters

[BUDDYonRC at aol.com]

In a message dated 2/4/2005 11:26:22 PM Central Standard Time,  
tkeithb at comcast.net writes:

I give  it a mixed review. In general it works, but my experience is that the
laser  doesn't always come to rest at the same location. In other words, if
you  give the laser a nudge and cause it to swing back and forth it won't
always  stop at the same spot. Sometimes it's higher, sometimes lower, and
other  times it will come back to the same location.

Also, the balancing wheel  is so sensitive that if you take it off of the
wing and put it back on the  same wing often times it doesn't read the same.
This could be due to the  inconsistent laser or could be that the balance
wheels moves slightly, I'm  not sure. Certainly this makes it difficult to be
sure two wings are  exactly the same when going back to the same wing may not
read the  same.

The only way I'm able to use it is going back and forth multiple  times and
seeing if it's still reading the same. Also, once set, swing the  laser four
or five times and see which spot it lands on most often. This  certainly
isn't very scientific.

What I always end up doing is just  getting things as close as possible and
then flying it to dial in the exact  required incidences.

I've seen threads on RCU where people set zero  incidence on non-adjustable
stabs using this tool, I think that's a BIG  mistake. Flat table with
measuring devices is the best approach.

It  could be that I just have a defective one, but I've heard others that  had
the same experience as I have had.

Keith


-----  Original Message ----- 
From: "John Pavlick"  <jpavlick at idseng.com>
To: <discussion at nsrca.org>
Sent:  Friday, February 04, 2005 8:17 PM
Subject: Other incidence  meters


> Has anybody used the Great Planes Accupoint Laser  Incidence meter on a
> pattern plane with any success? It's graduated in  1/4 degree increments -
is
> it capable of measuring this accurately?  If not, just how good is it? The
> laser hangs on ball bearings. The  mounting ears are nylon but seem to work
> OK...
>
> John  Pavlick
> http://www.idseng.com
>
>
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I Have been using the bar assembly from the GP laser meter and attach a  
block of balsa on each side then attach my digital level to the bar with  
electrical tie straps. This works great and is accurate to one-tenth of a  degree.  
Works great. 
Buddy 
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