tc1917(at)bellsouth.net
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 Posted: Sat Jun 04, 2016 5:20 am Post subject: Flutter |
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I have a 12 year old kolb slingshot with 912 ul 80 hp rotax. I only have abt 800 hrs on af and 400 on engine. At the advise of hawk i doubled up on hor/vert wires on tail section and they are tight but still can traverse forward and aft if elevator wants to shift it. Again at hawks advice i installed the rudder hinges in X style which is time consuming and tricky (see in archives). Elevator built according to plans and plexiglass trim on them. (Why would they need extra plates???). Ails have counter balancers and op rod at base as usual. (Again, why would u go through all that trouble to op them at center of ail???). This aint a model that goes two hundred. Other than engine is lifted in rear to make flying line correct- was miscalculated at factory. Needs to be lifted 1 3/4 to 2 inches in rear of engine above motor mounts. Contact me if you need further advise on this. (Only slingshots). I have been to 115 mph and normally cruise at 95 with spirts to 100. No flutter. No nastyness. Albeit a bit touch on the stick but this set up is nit for the chichenhearted. I think hawk would love flying this zoomer. Having had over a thousand hrs on my original firestar, several other kolb types and multiple other brands i can say Homer knew what he was doing and if you stick with basics, you have a great little plane. When you start modifying, cutting, adding weight, etc., you might crear a monster (as sheeting the leading edge) that not only was not worth the effort but can get down right dangerous. If you decide to make changes, please do yourself and your future widow a favor and have someone else test it!!!!
Sent from my iPhone
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