Because of the wide operational range (360 Degrees) of the AeroPerfect™ Digital Control Throw Meter, it is perfect for setting your aircraft's vertical fin at 90 degrees to the horizontal stabilizer. It is apparent from the photo below that the fuselage protrudes beyond the plane of the vertical fin so that a conventional triangle will not make contact with it. Enter the AeroPerfect™ Digital Meter!
Pre-fit the fin into the fuselage: Get a zero reading on the horizontal stabilizer, then measure the fin. If it measures 90 degrees, then you're ready to epoxy it into place. If not, then make the proper adjustments and re-measure. While the epoxy is curing, continue to verify that the stab and fin are at 90 degrees. A piece of masking tape can be used to hold the fin at 90 degrees while the epoxy cures.
For vertical fins that are tapered (/\), lay the fin on a flat surface. Use the AeroPerfect™ to measure the amount of taper: First, establish a zero angle on the flat surface and then measure the amount of taper. Simply add 1/2 the amount of taper to 90 degrees in order to set the fin at 90 degrees to the stab.
Using the convention of the photos below (this fin is not tapered) please note the following: If you were to turn the MU-1800-I counter-clockwise, you would add 1/2 the amount of taper to 90 degrees. Conversely, if you were to turn the MU-1800-I clockwise, you would subtract 1/2 the amount of taper from 90 degrees.
Remember that the horizontal stab does not have to be level in order to make a perfect measurement, because the AeroPerfect™ Digital Meter always measures the difference between the angle you established as zero and the angle you're measuring.
(Click Thumbnails for Larger Picture) |
||
(Turn off Pop-up Blocking) |
|
|
|
© 2004 - 2008, Bell Electronic Technologies All Rights Reserved