Nyrod seems to be a very popular product here in the KR group, but honestly, I am confused, why would anyone use Nyrod at all? I have been a modeller for over 40 years and a homebuilder/pilot for over 30, this is a terrible product, we used to crash models because of how badly they would go out of trim due to expansion co-efficient of this product. The outer sheath issue you had Sid, has ALWAYS been an issue with this product and has caused more than its fair share of grief in models. NOTHING known to man will stick to it and because of its oily nylon composition, even clamps slide on it. I see its attractiveness, but the reality of it is, do you want to trust your investment and potentially your life on this? Yours should be a lesson to all KRers. On a positive note, I'm really happy this ended as well as it did and obviously it was due in part to your most professional handling of the situation and expert piloting skills. Thanks for sharing and helping everyone to avoid another potential pitfall.
Wayne -----Original Message----- From: KRnet [mailto:krnet-bounces at list.krnet.org] On Behalf Of Sid Wood Sent: March-26-13 6:58 PM To: krnet at list.krnet.org Subject: KR> First Flight Issues - Elevator Trim On the first flight, 3/23/13, moments after lift off, the elevator trim jumped to Full Nose Up. Trim control in the cockpit was non-responsive. I had to hold firm forward pressure on the stick to maintain level flight with the stick position about neutral. The bounced landing bent the nose strut. Investigation after the flight revealed the epoxy seal on the sheath of the Nyrod trim tab rod had broken. The Nyrod center rod and the sheath were not damaged. The break is at the entrance to the horizontal stabilizer leading edge inside the fuselage. This allowed the sheath to move resulting in the trim tab moving to the Full Nose Up position. The fix is to secure the Nyrod sheath. This is the same practical installation requirements for any Bowden cable. NV aero is shipping a new nose strut. Here are some pictures from my website showing the Trim Control in the cockpit at Full Nose Down, the Elevator Trim Tab at Full Nose Up, and the broken Nyrod sheath anchor area: http://websites.expercraft.com/sidwood/index.php?q=log_entry&log_id=71577 Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA _______________________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options
