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Old 01-15-2013 | 10:42 AM
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bhall01
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From: Britton, MI
Default RE: WACO YMF

<div style="margin: 0in 0in 0pt">Chuck-</div><div style="margin: 0in 0in 0pt">Balance &ndash; depends on where you want to balance it.Based on the description in the Waco kit&rsquo;s documentation (nothing shown on the plans), it sounds like they&rsquo;re saying to balance just in front of, or on, the rear cabane struts.To balance at that point would require about a pound of weight at the tailpost.However, that point seems a bit rearward to me (tailheavy).Based on the &lsquo;old school&rsquo; method for figuring the CG of a bipe &ndash; well explained in this link http://www.modelairplanenews.com/blo...cing-biplanes/ that point calculates to a CG at about 38%.</div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt"> I checked at about 30% (using the method in the link) &ndash; that&rsquo;s about 2&rdquo; in front of the rear cabane mount.Balance just barely tail-down at that point.Compared that point to the CG noted on the Pica plans for both the 1/5<sup>th</sup> and 1/6<sup>th</sup> scale Wacos &ndash; their CG is in about that same relative location.Same with the GP ARF Waco&hellip;. And all of those fly fine.So for now, it&rsquo;s balanced at that point&hellip; worst case it&rsquo;s a little nose heavy (compared to the documented location), so I programmed in a 3<sup>rd</sup> flight mode with a little extra up-elevator &ndash; just in case.</div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt">WacoNut &ndash;</div><div style="margin: 0in 0in 0pt">Thanks &ndash; I like the panels too!The new &ldquo;glass panel&rdquo; Waco&rsquo;s are fine, but I wanted to model mine more like a 30&rsquo;s-style Waco well taken care of and still flying today.So the panel design I came up with is kind of a composite of several different older Waco&rsquo;s I found photos of.Scratch built.Instrument faces came off of Chief Aircraft&rsquo;s &lsquo;full scale&rsquo; side of the business &ndash; lots of nice HD photos of available instruments &ndash; everything from modern to classic &ndash; picked the ones I wanted, reduced to the size needed, and high-resolution printed on photo paper&hellip;.. sure beats the &ldquo;old days&rdquo; of a few years ago when a Xerox was about the only tool we had to work with!The rest is sheet plastic, some plywood, and a bunch of &lsquo;fiddly-bits&rsquo; from around the shop.Fun stuff!</div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt">Peter &ndash;</div><div style="margin: 0in 0in 0pt">No, the tail feathers are not removable.Although I don&rsquo;t think it would be that hard to make them removable.I did modify the attachment method some, and the means of setting the incidence&hellip;.. basically I&rsquo;d add/remove shims to adjust the incidence, but I figured once it&rsquo;s set and &lsquo;verified in the air&rsquo;, there really shouldn&rsquo;t be a need to change it.And instead of using 2 ply &lsquo;retainers&rsquo; for the rear of the stab I madeup a single laminated retainer the full width of the fuselage at that point&hellip;. So make that &lsquo;bolt-on&rsquo; instead of glue on, and the stab would be removable.As far as how to get it out from under the fin&hellip;. Fin and rudder would also need to be removable, but that wouldn&rsquo;t be that difficult to do either.</div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt">Dash7ATP &ndash;</div><div style="margin: 0in 0in 0pt">Vinyl graphics are from Kirby&rsquo;s Kustom Vinyl - <font color="#0000ff">http://www.angelfire.com/oh2/kirbysgraphics/index.html</font> - Been in the business quite a while and is awesome to work with.Pinstripe &ndash; yes and no &ndash; Kirby does his vinyls in layers, so there were black vinyls to apply first, then the slightly smaller red was applied over the black leaving the &lsquo;pinstripe&rsquo;.Color &lsquo;bleed-through not a problem as Kirby had a &ldquo;special Red&rdquo; that basically has a white underside/base&hellip;.. still thin enough to pick up some of the Solartex fabric look through the vinyl.</div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt"> Cowl blisters &ndash; not too bad to apply, patience and practice.14 needed, I ordered 20 to have a few spare to practice with&hellip;.. not too bad at all once a &lsquo;method&rsquo; was established.Graphics I got were $85 &ndash; wheel pants, side stripes, cowl blisters (plus spares), N-numbers, Waco logos, plus a few &ldquo;No Push&rdquo;, &ldquo;No Step&rdquo;, etc&hellip;. seemed very reasonable to me.Plus Kirby is great to work with as far as sending a &lsquo;proof&rsquo; with all color and dimensions clearly laid out to look at before cutting anything.</div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt"> Guess that&rsquo;s about it &ndash; Thanks guys!</div><div style="margin: 0in 0in 0pt"></div><div style="margin: 0in 0in 0pt">Barry</div>