3 blade versus 2 blades....

Re: 3 blade versus 2 blades....

by Mike Goodrich » 9 years ago

Mike Goodrich

8 123 0

Get together with a few fellow owners and buy a Smart Avionics PB3 dynamic prop balancer
http://www.smartavionics.com/shop.html
Balancing props is easy with this and at 550 UK pounds it easily pays for itself if a group buy one.

You can also use it to carry out a full spectrum analysis to determine what is the source of most of the different vibrations you're feeling.

Dynavibe also do a good balancer but it's around 2000US$ for the base model and around 4000$ for one that has the the full spectrum analysis option equivalent to the Smart Avionics PB3.
Here's an article by Dynavibe that talks about vibration analysis.
http://blog.rpxtech.com/dynavibe-blog/eaa-sport-aviation-article

I have one of these Smart Avionics PB3 balancers and have used it to balance about 50 autogyro rotors over the last 3 years. I've also done some small helicopters and lots of Rotax powered props.

Mike G

Re: 3 blade versus 2 blades....

by Mike Goodrich » 9 years ago

Mike Goodrich

8 123 0

Here's a good video by Dynavibe explaining the basics of frequency analysis.
https://www.youtube.com/watch?v=cqUuiJZ64Tk&feature=youtu.be

There's some pretty good stuff on their website and you don't have to buy their equipment to do it.

Mike G

Re: 3 blade versus 2 blades....

by Andy Gustafsson » 9 years ago

Andy Gustafsson

7 17 0

Thanks Mike for the info. I'm going to talk to our local 912 tech about it.

Thanks again.

Andy.