| Author | Message | ||
     Louie Lacy New member Username: Llacy Post Number: 93 Registered: 10-1999 |
My nose gear has started to shimmy below about 40 mph and tightening the nut on the spindle doesn't help. Does anyone think replacing the bellville washer will help this situation? Lou Lacy | ||
| Jerry Sjostrand New member Username: Jerry Post Number: 79 Registered: 08-1999 |
Hi Louie: I had the same experience with my Express, a Cessna 182 and a Cessna 206. First, the tension on the rear end of the nose wheel fairing (using a fish scale) should be 25 to 30 lbs. Also, the rake of the nose wheel from front pivot point to back (axle )should be negative from 1 to 4 degrees. This means the nose of the aircraft will lift as the wheel turns side to side putting centering pressure on the gear. The next, or maybe the most important is to make sure the wheel and tire assembly is balanced and that the tire is round. Nose tires take a real beating so check for flat spots. Changing the washer may make a difference but you do need to rule out the other factors. Good luck and let us know how you resolve the problem on your Express. Jerry Sjostrand | ||
| Louie Lacy New member Username: Llacy Post Number: 99 Registered: 10-1999 |
This nose gear shimmy is still with me. Has anyone had the same problem and what did you do to solve the problem. How can you balance the tire and check if it is round. All the tire places do not have anything to check this type of tire. Put in new bearings and tried different tension on the nose wheel fairing. Lou Lacy | ||
| Chaz King New member Username: Chazking Post Number: 31 Registered: 01-2005 |
Louie, Several years ago, I had the shimmy upon landing ... the nose wheel would violently shift left / right against the stops. It was noticeable by people @ the airport, who commented helpfully on the fact! I took the nose wheel yoke off, re-greased every thing, and tightened the castle nut to 25# side pull. Solved the issue. Use a fish scale on the nose gear tow bar and pull to ≥ 25# (tighten the castle nut to get that tension). Cotter key & you're done. Barring all of that .. do a google search of "Nose gear shimmy." Look @ Aircraft Spruce. There's info on shimmy .. Ask Darrell Peterson for his recommendation. Regards, Chäz | ||
| Louie Lacy New member Username: Llacy Post Number: 104 Registered: 10-1999 |
I still have nose wheel shimmy. Could the friction washer be the problem. I have 825 hours on my Express and wondered if that washer needs to be replaced at a certain time. Lou Lacy | ||
| Kevin Maxwell Dennes New member Username: Kevin_dennes Post Number: 3 Registered: 03-2011 |
Louie. We developed a small amount of shimmy on our 2000. However the pull weight had dropped to about 25lbs. I increased the pressure to 40 lbs (which I think was in the original instructions) and since then we have not noticed any shimmy on landing. May be worth a try to increase that pressure. Regards. Kevin (from Downunder) |