Whilst awaiting the return of my leg with a new rubber bungee it’s good to take the time to get the bugs out from inside the wing and grease up parts.
The wing inspection panels come off in about 2 mins and you can then get to the lower aileron bell crank (the bit of metal that turns the latitudinal push pull into a longitudinal push pull and makes the ailerons bank the aircraft so smoothly)
Also .. to get all the old grease removed from the wing and rudder hinges .. cleaned down and fresh grease applied
Whilst lying under the tail end a few weeks ago .. cleaning and drying the bottom I noticed that there was a small scrape on the Oratex material that doubles over the metal joints.
it turns out that prolonged full left rudder turns over the 3 years plus has caused the cable .. that splices off the rudder cable to give left and right control on the spring governed tailwheel … has rubbed against the lower material covering.
An easy fix .. will cut a pinked patch of leather .. really degrease the tail end and stick it on the overlap joint
Well …. what do you get when you mix rubber and oil … there may be a few answers but probably an underlying theme will be nice lubrication !
Its not so nice when it comes together at an area where you probably don’t wish to have quite so much lube and slip …
3 smoke flights in and I was on my 7th or 8th landing post the addition of the smoke system … and I realised I was getting some of the excess oil over the tailwheel .. I made a small leather boot but it was already pretty moist.
On the 8th landing I got quite a bit of wheel shimmy at the end of the roll out …. on parking up i wondered if it was a bearing … but on investigation proved to be an interesting small problem….
The oil had wet the tailwheel bungee rubber and then the ‘loop around’ had slipped up the tailwheel shaft and popped onto the (smaller diameter) main shaft. This had the effect of slacking the support .. hence allowing the natural resistance of the bungee – Now gone – to let the wheel have more free movement.
Easy fix .. clean it all down and remove the oil and then cable tie the bungee top and bottom loop together
With my annual permit expiring in 3 weeks it was time to meet up with the inspector to check over the aircraft and then conduct a flight test to monitor and check all the numbers ….Climb, stall, temps, pressures, speeds …. play with the clouds comes free