Go Back  PPRuNe Forums > PPRuNe Worldwide > The Pacific: General Aviation & Questions
Reload this Page >

Whats with the alternators on the Navajo?

The Pacific: General Aviation & Questions The place for students, instructors and charter guys in Oz, NZ and the rest of Oceania.

Whats with the alternators on the Navajo?

Old 16th Jul 2021, 04:16
  #1 (permalink)  
Thread Starter
Join Date: Jun 2020
Location: Victoria
Posts: 48
Whats with the alternators on the Navajo?

Gday All,

Just intrigued as to why the R/H engine on the Navajo/Chieftains have an exposed alternator (as seen in the above picture), whereas the L/H engine does not have one visible.
Would i be correct in assuming the right hand alternator wears out faster than that one on the left because it is more exposed to the elements?

Cheers All,

Mach1Muppet is offline  
Old 16th Jul 2021, 05:06
  #2 (permalink)  
Join Date: Jan 2007
Location: perth
Posts: 75
I'm only guessing Mach1, but I would assume it's got aircon and you need to rearrange things to install a belt driven compressor..
bolthead is offline  
Old 16th Jul 2021, 05:18
  #3 (permalink)  
Join Date: Dec 2004
Location: Melbourne, Victoria
Posts: 66
🤔 and added to that, a bit of trivia...

Is that only true of the CR (counter-rotating) models of PA31-310/325? (Coz of course all the -350 Chieftains are CR)

and what causes the Alternator load limitation to reduce on the CR engine? 🤷‍♂️🤓
Best Rate is offline  
Old 16th Jul 2021, 07:28
  #4 (permalink)  
Join Date: Oct 2007
Location: Aus
Posts: 651
I'm pretty sure it's a C/R thing not the result of aircon fitment, when they flipped the engine something made them stick the alternator there and they didn't bother altering the cowls. Results in more exposure to rain etc, so it puts a load limit on the RH alternator (40amps) in wet weather due to the belt slipping. I think it makes the RH engine run slightly hotter as well.
43Inches is offline  
Old 16th Jul 2021, 10:29
  #5 (permalink)  
Man Bilong Balus long PNG
Join Date: Apr 2002
Location: Now officially on Life's scrap heap, now being an Age Pensioner and not liking it one little bit! I'd rather be flying but in the meantime still continuing the never ending search for a bad bottle of Red!
Age: 66
Posts: 2,710
Good piccy of a Chieftain though! Same colour scheme as the old ASA a/c VH-LMB.

T'was a good a/c until, I believe, someone bent it!!
Pinky the pilot is offline  
Old 16th Jul 2021, 13:39
  #6 (permalink)  
Join Date: Aug 1998
Location: Ex-pat Aussie in the UK
Posts: 5,283
Nice to see someone dressed the props, at least.
Checkboard is online now  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.