Martin There should be NO movement at the wing tips unless you did not have the nuts on as well..... and tightened when you did this test?? Pat Russo
> Just did a final(?) W & B before registering and hopefully flying the > first of my two, now allocated the rego 19 - 7814 . However. When we > put the > wings on (for the first time in over 6 months) we noticed about 1 inch > play vertical at each wing tip . Fore and aft play seemed to be much > less, to > the point that it wasn't noticeable.. > I presume that some vertical play is necessary and a result of being able > to fit the wing bolts, but how much is too much? Is there a spec? Couldn't > see one in the one manual which came with my two 'planes ..... Would > appreciate advice .... > And if I have to reduce the play, does anyone have any recommendations > please > Cheers > Martin > > ----------------------------------------------------------------------------- Martin, As Pat put it: NO movement. What little shaking you could try to do by grabbing the wing tip is trivial compared to the tons of force resulting from pulling 6 g's or a hard landing. The bolt holes need a little clearance so the bolt will fit. Technically the WAF bolts are in shear, but the holding grip comes from the bolts' tension squeezing the outer and inner WAF plates together. It is friction that is holding the wing in place. (Same system for the AN3 bolts holding the WAF to the spars.) Be sure you do use a torque wrench on those nuts to set the correct torque. AC 43.13-1B Table 7-1 looks like 160-190 in-lb recommended for AN6 bolts. Don't take my word for it; read it for yourself. http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/list/AC%2043.13-1B/$FILE/Chapter%2007.pdf Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA smw...@md.metrocast.net
