|
|
|
|
Ron's Web Site
|
Date: 11-13-2011
|
Number of Hours: 2.50
|
Manual Reference:
|
Brief Description: Tailwheel and Tailspring
|
|
Upon landing at my grass strip today, it became apparent that I had a flat tailwheel. No control issues, just took more power to get back to the hangar. Fortunately, no damage to the wheel itself. I disassembled the wheel and found a linear tear in the tube. Feeling around the inside of the tire, it appears that the cord inside the tire was delaminating, possibly pinching the tube. Anyway, I replaced the tire and tube with new AC Spruce P/N 06-08100 and 06-08102 (10x3.5-4 ply tire and 10x3.5 tube with 90 deg stem). I cleaned the bearings and packed them with Mobil SBC-100 Synthetic Bearing Grease. I have spent some time talking with Wup Winn from Alaskan Bushwheel about shimmy issues. He is of the opinion that the kingpin angle is reversing when I pull the stick back. That seems possible given that I generally can't pull the stick to my belly once I'm landed on concrete until I'm fairly slow. Brian Sorensen thought the same thing and had a 2 inch spring made up (machined down to 1.5 inches at the end). Wup thought their Husky tailspring, P/N ABI-76082-00 would be a good match for the Bearhawk. I bought the unit, had to drill out the front holes to 15/32 inches and re-arch it slightly using a 12 ton press in order to get it to fit. It has a larger kingpin angle and is about 1 inch shorter than the Avipro unit. I had had some wallowing of the Avipro tailwheel attach hole from using the exuberantly shimmying tundra tailwheel. The additional remaining metal on the new unit is probably a good thing, given the rough terrain at my home strip. I also shortened the spring connector cable. After several flights, no further problems with shimmy with the stick fully back.
|
|
New tire, tube and tailspring.
|
|
|
|
|
|
|
|
|
Copyright © 2001-2024 Matronics. All Rights Reserved.
|
