Which prop Bobby?

- Matt Boiteau

On 11/17/2018 9:33:42 AM, Bobby J. Hughes bhughes@qnsi.net <flyrotary@lancaironline.net> wrote:

Rob,

I have an electric constant speed prop so I have a wider operating range. Typical cruise between 4800 and 5200 rpm. Others with fixed pitch props may turn faster.  

Bobby

Sent from my iPad

On Nov 16, 2018, at 6:58 PM, Robert McMillan robmcmillanpls@gmail.com <flyrotary@lancaironline.net> wrote:

Very cool guys!

I noticed the tach was showing 5230 or 5240 RPM.  Is that about the highest folks are comfortable as a continuous power setting? If not, what Is? 

Thanks!

Rob McMillan 

On Nov 16, 2018 3:02 PM, "Todd Bartrim bartrim@gmail.com" <flyrotary@lancaironline.net> wrote:

Nice.  I've gotta try that. 

Todd 

On Fri, Nov 16, 2018, 10:07 Bobby J. Hughes bhughes@qnsi.net, <flyrotary@lancaironline.net> wrote:

Steve,

 

Actually I was joking. I was amazed how little vibration the airframe had so I shot a video of the water bottle. I will have a look at VibSensor. It will be interesting to see the results.

 

Bobby

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Friday, November 16, 2018 11:05 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Rough running Rotary?

 

There is a free app called VibSensor that runs on both android and I-phone/pad platforms.  Although not a research quality system, running the app and holding the device firmly against a surface of interest will give objective results.  This may give a basis for useful comparisons for the terminally curious.

In my case, dynamically balancing the MT prop and the flex plate-damper combination as separate units made a noticeable difference in the system vibration signature.

Steve Boese 

On Nov 16, 2018, at 8:25 AM, Bobby J. Hughes bhughes@qnsi.net <flyrotary@lancaironline.net> wrote:

◆ This message was sent from a non-UWYO address. Please exercise caution when clicking links or opening attachments from external sources.

 

 This may waste 18 seconds of your life!

 

 

 

https://www.dropbox.com/s/91bc9m56x4boktl/Smooooth.MOV?dl=0

 

Bobby