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tailcone access panels

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fklein(at)orcasonline.com
Guest

Posted: Thu Jan 17, 2008 12:26 pm Post subject: tailcone access panels

All.



I note the plans calling for two 4" dia. access panels and one 2.5" 

dia. viewing panel on the starboard side of the fin and tailcone. I 

can't help but wonder about the adequacy of these and I seem to recall 

some discussion on this.



How about increasing that viewing panel to 4" in order to be able to 

replace the trim servo?



Does anyone wish they had added other panels due to maintenance, part 

replacement issues?



Assuming that the 4" size is a limitation due to structural 

considerations, has anyone taken a leap of faith and made the holes 

larger and added say 2 additional layers of bid to the flange thickness?



Thanks in advance for any thoughts or suggestions...



Fred

A194

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budyerly(at)msn.com
Guest

Posted: Thu Jan 17, 2008 3:05 pm Post subject: tailcone access panels

<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]-->  Fred,

 For those not blessed with 4 foot long arms that are 2 inches in diameter,  I use the following:

 I have a 4 inch hole (3 with flange) for the viewing hole to get to the  trim servo screws. and 6 inch (5.5 with flange, except where nutplates are)  for my arm to reach in and do the tail plane work.  I have added others for  tail wheel aircraft and if you are in doubt about strength, glass in a 1/2 inch  rib and longeron to frame your 4 ply lay-up to stiffen the fuselage around a 6  inch hole.  A good rule of thumb is position the holes so you do not cut  into the redux joints, and if you need three holes put one on the other  side.

  

 Bud Yerly

 Custom Flight Creations

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