Thursday 28 November 2013

Motor Shaft Fixed

...and the Walrus flies again

I wasn't too sure of fixing the Walrus motor, although I had read that replacing bent shafts appeared to be common enough, so re-securing the shaft in the motor shouldn't be too hard. However The circlip really didn't inspire too much confidence.

As it turned out I couldn't get an 3mm external circlip anyway, but what I did get I think is better, although it required a little modification to the motor mount. The external locking ring has almost full engagement around the shaft and I really can't see that coming loose, unlike the sad little circlip (which I found hiding in the fuselage).


Champion 3mm Spn Type Ext Lock Ring

The only problem is the outer diameter (10mm) is much larger than the circlip, so the hole in the bulkhead had to be increased from the original 8mm to about 12mm, which I did with a round file.

Having re-assembled the motor and done a brief power test (happily the prop didn't fly off) I checked the weather then dashed off to the field with the Walrus for a fly before the rain came returned...

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