Thursday, July 2, 2009

Three steps forward and two back


Things had been going nicely with the starter adaption to the McCulloch engine on my gyro. There were a couple of set backs that had to be dealt with but Dave Bacon is a resourceful man and he took the challenges in stride .

When he found that there was simply not enough room to accommodate both the starter and the Wunderlich prerotator that is on my gyro , he switched out a part of the prerotator for a different one that would leave room so that I wouldn't have to give up the prerotator.

Finally last Saturday, a 102 degree day in El Mirage, after working all day in the hot hangar it looked like we were on the home stretch. We rolled the gyro out to the cement run-up pad and started the engine. It fired right up and I was pleasantly surprised at how powerful the starter was.

Still not having everything buttoned up, Dave shut the engine down after a very few seconds of running. I looked at him expecting to see a big smile on his face but instead his face showed great disappointment and I knew that something was wrong. He pointed to the propeller.

We found that a brass bushing had come out of the front end of the starter and had contacted the propeller leaving two gouges in the hub area. The starter that had come with the kit was a reconditioned one. Dave checked out repairing the starter but considering the importance of the starter and it's it's closeness to the prop he opted to pick up new starter.

So, no work on the starter this weekend, the 4th. of July but next weekend is a whole new ball game. What's left to do is install the starter, that should go fast now, and hook up solenoid and battery wires for good and then run that baby up !

After the engine run up will come the hang test. To do that we will use a comealong and lift the gyro off the ground with me sitting in the seat and holding the gyro level with the control stick . Then with an angle measuring device , ( sorry, I can't think of the name of it), we will check to see that the center of gravity is correct. In this case, the gyro should hang 0 to 3 degrees nose down. If all is Ok then it will be time to go fly.

So, we're gettin' there.
Till next time.
Marion Springer

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