wandersen
Well-Known Member
- Joined
- Jul 31, 2007
- Messages
- 519
- Reaction score
- 140
Here are two pictures from the test run of the IO-540 we did today. It was a bit of a challenge to get the test prop mated to the crank with the very long saber engineering bushings installed that are used on the Catto prop. I ordered two spacer plates (1/4" thick + 3/8" thick). We had to make our own prop studs out of P7 threaded rod 1/2-20 and some class 8 nuts. I wouldn't fly behind this, but it all worked well on the test stand.
It ran very well for the 1 hour test sequence. Nothing of note in the filter.
I wonder why they make the test props out of rubber?? <g>
It ran very well for the 1 hour test sequence. Nothing of note in the filter.
I wonder why they make the test props out of rubber?? <g>
![test run1.jpg test run1.jpg](https://cdn.imagearchive.com/biplaneforum/data/attach/7/7089-test-run1.jpg)
![test run2.jpg test run2.jpg](https://cdn.imagearchive.com/biplaneforum/data/attach/7/7090-test-run2.jpg)