Neil wrote:
Not sure how it would be used in propeller balancing.
Me neither
It would work fine, with an accelerometer such as the one in my link posted earlier, but you would need to bring in a prop position sensor so the angular position of the maximum acceleration can be determined. That is normally done optically.
Vic – That is too cool using the wheel dynamic balancer for your prop !
Looks like you had to fabricate a hub adaptor to make it work.
I’m not surprised that you got it fairly close with that, the only part missing was the engine.
Nice idea but if I were to consider having my prop balanced (and I’d like to hear people’s thoughts and results) I would want it done on the engine. When I build car engines I always have the whole rotating mass balanced to within 0.1g. It makes a noticeable difference but then the engines I usually build are from the 1960s and had a manufacturer tolerance of 5g.
Great bit of engineering improvisation, Vic
Can anyone recommend someone in the southern UK who does dynamic prop balancing?
Preferably with a decent piece of kit which shows the harmonics, not just a one-line readout of where to attach the weight and how big it should be?
Last time, a few years ago, I used someone who was working with IAE at Cranfield.
Peter, you just should purchase a PB-4 from smart avionics. It has all what you need. Acceptable cost and very good piece of equipment.
Thank you… at £850 that’s a very good tip.
However I have found an extremely kind pilot who has something similar, sold by Spruce. I need to arrange to meet up with him.
I just got the plane back home today, and gave it a 2hr flight per the Lyco instructions. Then I will need to do a GAMI test and if necessary get a new set of injectors. Then I will do the prop balancing.