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Old 12-30-2018 | 05:05 PM
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RCFlyerDan
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That’s a great story about your UF, the woods, and the glide! I was spotting for a buddy of mine. He was on a left base flying over a woods before turning final. One of the flaps failed with the jet rolling over on it’s back. It was a new jet and we were doing trim and gyro adjustment flights. So his first thought it was the gyro. He turned it off, only to still be out of control. During all of this the jet is traveling further away from us. On the last dive, I thought it was gone as it disappeared below the tree line. He was still fighting. I was waiting for the sound of fiber glass going through trees. Fortunately by this time, the jet had traveled past the woods over an open area. All of a sudden, the jet popped up going vertical! He had the flaps up by this time and under control and brought it safely back to the runway. Never quit fighting until there’s sound of impact or smoke.

I’ve had the Flash with that tank, along with both the Viper and Lightning have baffles. To me, IMHO and experience, what caused the glue to fail was pilot induced, I would say that the fuel can pump was pumping the fuel into the tank too fast causing the tank to expand. The expansion caused the baffling to be pulled away from the tank sides. The joint failed beyond its pull tensions. Either that fueling, but I bet that it was several fillings prior, then caused your flame out issues sometime later from the initial joint failure. We’ve all heard a tank with an expansion crack noise. That crack may have been the joint. Just a thought. And the reason why I bring up the fuel pump pressure in the previous response.

Last edited by RCFlyerDan; 12-30-2018 at 05:20 PM.