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Dynamic prop balance
Hi All,
I'm looking for a shop in the southeast Wisconsin/northern Illinois area that can do quality dynamic prop balancing, preferably with Rotax experience. Any/all suggestions appreciated. Barry |
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http://www.aviationvibes.com/vibrati...nd-mitigation/ |
I'm curious... why do you feel the need to balance your prop? I set the pitch on my blades with Van's sheetmetal gage and I'm very pleased with the flight performance and engine/prop smoothness especially at cruise RPM.
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I have balanced quite a few 12's and every one benefited significantly. It is also a recommended procedure by both Rotax and Sensenich.
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Just finished balancing mine this weekend. Started out at 0.21 ips, was very happy with the final result after adding 11 grams of weight.
![]() John Salak RV-12 N896HS |
Prop balance
Where and how did you attach the weight?
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Call Poplar Grove Airport, IL they have a guy that balances props. About $250. Mark C.
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The factory listed weight difference between the two Sensenich blades is 6 grams (1204g and 1198g), so the weight location is actually near the root of the lighter blade. Not sure how that compares with other RV-12s, but it may be an indicator of the improvement you can expect from dynamic balancing. John Salak RV-12 N896HS |
I spent Saturday morning trying to balance my RV6 / Superior IO360 / Sensinich setup with the same Dynavibe model shown in the photo above. However after 8 runs trying to dial in on the best balance, I discovered that none of the results were repeatable on subsequent runs! I removed all weights and headed home to ponder what could be going on.
Has anyone else found repeatability to be a problem? I was able to get down to about 0.12ips, but a 2nd trial with no change yielded 0.38ips! Originally my setup was showing 0.42ips. The last run of the day was back to no weights, and I was getting 0.57ips. Not sure what is going on. We had similar results on a different engine and airframe earlier that week. Don |
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