Jump to content

Prop Harmonics - Missile

74657

By 74657
in Modern Mooney Discussion

 Share

Recommended Posts

74657 Proficient

74657

Posted
Posted

I finally got to go on a long-ish cross country earlier in the week with the new engine/prop and noticed a wierd sound coming through in my headset (Bose X) between 2325-2375 RPM.  It almost sounded like valvetrain chatter but as soon as I took my headset off the sound went away.  I feel comfortable with my cruise power setting @ 23"/2350 RPM.  If I go 23"/2500 the prop makes much less sound and is smoother overall but at a 1gph premium.  It seems wierd that I would be pickup up some harmonics right in the middle of the "sweet spot" of the RPM range.  Maybe it has something to do with the ANR of my headset?


Brandon

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.