Wikiposts
Search
Private Flying LAA/BMAA/BGA/BPA The sheer pleasure of flight.

O-470

Thread Tools
 
Search this Thread
 
Old 21st Mar 2013, 06:29
  #1 (permalink)  
Thread Starter
 
Join Date: Feb 2013
Location: Australia
Posts: 70
Likes: 0
Received 0 Likes on 0 Posts
O-470

Hello everyone,

Just wondering why the O-470 has a cool loping sound? Do any other engines such as the IO-550 have the same trait?

Thanks
JSeward is offline  
Old 21st Mar 2013, 21:01
  #2 (permalink)  
 
Join Date: Feb 2006
Location: 11 GROUP
Age: 77
Posts: 1,346
Likes: 0
Received 79 Likes on 27 Posts
0-470 sound

The 0-470 has lots of 'chug per jug' and swings a big prop at low revs.
The exhaust system is very basic and gives a pleasant 'growl'.
In a machine like a C182 the aircraft moves at a good speed in a fairly course pitch (low revs) hence it 'lopes'.
Good engine in a great aircraft = a fine well balanced performer.
POBJOY is offline  
Old 21st Mar 2013, 23:07
  #3 (permalink)  
Thread Starter
 
Join Date: Feb 2013
Location: Australia
Posts: 70
Likes: 0
Received 0 Likes on 0 Posts
It is a nice engine, but do you know what exactly gives it the Harley like sound? Are the firing intervals even or is it a function of the exhaust pipes?
JSeward is offline  
Old 22nd Mar 2013, 08:10
  #4 (permalink)  
 
Join Date: Feb 2006
Location: 11 GROUP
Age: 77
Posts: 1,346
Likes: 0
Received 79 Likes on 27 Posts
Big pots low revs;and in my experience with the exhaust systems the 'can' has a 'diffuser'(perforated cone) inside at both ends where the branch comes in. These do fragment inside even when the can itself is sound.
No doubt this will increase the 'Boom'
Cessna 180 and an 0 470 = aviation heaven (especially with the larger wheels)

Last edited by POBJOY; 22nd Mar 2013 at 08:17.
POBJOY is offline  
Old 22nd Mar 2013, 17:43
  #5 (permalink)  
 
Join Date: Aug 2004
Location: Home
Posts: 1,021
Likes: 0
Received 4 Likes on 4 Posts
0-470

The 0-470 in my Cessna180 does indeed sound great.
The sound of £ notes flowing out of my wallet for the fuel not so good!!

Last edited by cessnapete; 22nd Mar 2013 at 17:46.
cessnapete is offline  
Old 22nd Mar 2013, 19:09
  #6 (permalink)  
 
Join Date: Feb 2006
Location: 11 GROUP
Age: 77
Posts: 1,346
Likes: 0
Received 79 Likes on 27 Posts
AH well cessnapete it is probably better than money in the bank,and what fun.
I had one for years and apart from earning its keep (which it did very well)
it was my preferred mode of transport to go to the other job.
You could load it up with all the kit (and extra fuel) for an 'away tow' plus a ground support person and full tanks.
It would then 'laugh' at a short strip with obstructions and with its larger wheels 'bound away' into a climbing turn on another op.
A real workhorse and a peach to fly,with the 40 degree hand brake.

Last edited by POBJOY; 22nd Mar 2013 at 19:11.
POBJOY is offline  

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



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.