REFLECTOR: Ivo

[nmflyer1 at aol.com]

One thing to note here. As far as I am aware, the only IVO's to fail have been due to people not following the mandatory instructions of the manufacturer. If you follow the rules, the prop appears to have a long life and good performance. I asked Mark Machado? how he liked the performance of the IVO on their 173FGE. He told me that the takeoff thrust was a cross between frightening and exhilarating. 

The prop definitely doesn't fall into the realm of put it on and forget about it. Personally I believe that a little extra attention is worth the cost, performance, and company backing. 

Kurt 


-----Original Message-----
From: Dave Philipsen <velocity at davebiz.com>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Sent: Mon, 27 Apr 2009 9:17 pm
Subject: Re: REFLECTOR: Running without prop


Brian Michalk wrote:?
> Okay, I'll jump in here...?
>?
> What I wonder, is if one took the rotational inertia of the MT, and > duplicated it by adding a plate to the IVO to increase the rotational > inertia, would the IVO still fail? There's no question that the > pulses on the IO360 are larger than on the Franklin. Maybe increasing > the inertia of the system could reduce the negative torque pulses??
Just thinking aloud here and from my experience with automobile engines. Would a device similar to the harmonic balancer on an auto engine work? As I remember, it is essentially a fairly massive iron ring with some kind of rubber sandwich between it and the hub. I think the rubber absorbs some of the harmonics.?
?
Dave Philipsen?
Velocity STD FG?
N83DP?
?
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