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03-24-2014, 02:51 PM
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Join Date: Jan 2005
Location: Round Rock, TX
Posts: 3,778
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Sounds like an exciting product, hope to get a good review back. Might just have to get one. 
__________________
Reiley
Retired N622DR - Serial #V7A1467
VAF# 671
Repeat Offender / Race 007
Friend of the RV-1
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03-24-2014, 02:54 PM
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Join Date: Sep 2007
Location: New Brighton, Pa. 15066
Posts: 286
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1.01 lbs. on my fish scale ! Good for Hartzel Props too ! Not Good for additional Nose weight .
__________________
14 planes owned ,11 bought ,3 built .
RV-8 N808H ,Sold
RV-6 Sold 😔
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03-24-2014, 02:56 PM
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Join Date: Sep 2007
Location: New Brighton, Pa. 15066
Posts: 286
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Quote:
Originally Posted by LifeofReiley
Sounds like an exciting product, hope to get a good review back. Might just have to get one. 
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With a 100 day money back offer why not try it yourself ? 
__________________
14 planes owned ,11 bought ,3 built .
RV-8 N808H ,Sold
RV-6 Sold 😔
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03-24-2014, 03:01 PM
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Join Date: Jan 2005
Location: Round Rock, TX
Posts: 3,778
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Quote:
Originally Posted by HIIFLY
With a 100 day money back offer why not try it yourself ? 
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Probably will, another couple of weeks before the new catto shows up. 
__________________
Reiley
Retired N622DR - Serial #V7A1467
VAF# 671
Repeat Offender / Race 007
Friend of the RV-1
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03-24-2014, 03:20 PM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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Quote:
Originally Posted by az_gila
It looks like a remake of the Mark Landoll Harmonic Balancer Ring sold about a decade ago.
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I could be mistaken, but they appear to be two different operating principles for two different purposes.
The Landoll is a heavy steel ring inside an aluminum ring, in a bath of viscous silicone fluid. It is a true torsional vibration damper.
The Balancemaster is basically a hollow tube at the perimeter of a disk. The tube contains a small amount of mercury. Its purpose is radial balance.
__________________
Dan Horton
RV-8 SS
Barrett IO-390
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03-24-2014, 04:08 PM
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Join Date: Feb 2005
Location: Minneapolis
Posts: 2,473
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Quote:
Originally Posted by DanH
I could be mistaken, but they appear to be two different operating principles for two different purposes.
The Landoll is a heavy steel ring inside an aluminum ring, in a bath of viscous silicone fluid. It is a true torsional vibration damper.
The Balancemaster is basically a hollow tube at the perimeter of a disk. The tube contains a small amount of mercury. Its purpose is radial balance.
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Yep...I think you're right in the fact that there is almost nothing I find similar about them at all...other than they both bolt somewhere forward of the firewall onto a rotating part of the engine, and both are round.
Having actually installed a number of them, I'd say the Landoll rings (both the solid/fixed and the viscous ones) are quite nice for light nosed airplanes that need a few pounds on the nose (and by some accounts for vibration). This new little widget looks like it might be kind of a neat piece of work - though as noted quite different from the Landoll weight. I too will be interested in seeing the real world reports of this from those of you putting one on. Neat to see new products that people are able to come up with.
At .040" think I'm not sure it'd be much of a concern for anyone other than those on their last prop bolt thread - I doubt it'd be noticed on most any typical RV installation.
Cheers,
Stein
Cheers,
Stein
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03-24-2014, 04:37 PM
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Join Date: Oct 2006
Location: S. Cal
Posts: 11
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Some maybe 20 years ago I had a small hobby store right by "Balance Masters" and got to know the owner a bit. At one point he asked me to be a financial investor in this concept - which he said was already used on VW's and several big rigs for balancing... he was about to branch off into Harleys too. The concept looked compelling, and simple too, but just didn't get excited about it. a few years after that I looked around and saw/heard nothing more about "dynamic balancers" figured the idea had died but here it is once again. No actual experience one way or the other on how well it works but interesting to see it's back. I do question why it's been some 20 or so years to rear it's head if the concept is one of usefulness as this should be used on ALL car tires, crankshafts, props (full sized and models), most anything that has rotational mass and needs balancing
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03-24-2014, 04:41 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,516
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Now is a great time to get some real data. Take balance before installation at various RPM and then after at the same RPM. If it works well, then the IPS linear vibration due to spinner/prop imbalance should be reduced by some amount that can be measured. Maybe they will give you one to become a spokesperson!
Is it less costly than a good balance job? (or several?)
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
Last edited by BillL : 03-24-2014 at 04:47 PM.
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03-24-2014, 05:19 PM
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Join Date: Mar 2005
Location: Tucson, AZ
Posts: 167
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I just ordered and plan to do before/after testing. Will report results.
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Roger, 7A, N374RS, Tucson
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03-24-2014, 05:39 PM
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Join Date: Aug 2010
Location: San Luis Obispo
Posts: 199
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Just got two
Quote:
Originally Posted by LifeofReiley
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We are going to be testing on our super Rv8 and 409 after SNF, tried it on dyno but didn't see much change......I'll let you know.
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