Go Back  RCU Forums > RC Airplanes > Beginners
Reload this Page >

Engine Rich or Lean???

Notices
Beginners Beginners in RC start here for help.

Engine Rich or Lean???

Old 01-10-2009, 09:01 PM
  #1  
beachbrada
Senior Member
Thread Starter
My Feedback: (17)
 
Join Date: Feb 2008
Location: Ewa, HI
Posts: 983
Likes: 0
Received 0 Likes on 0 Posts
Default Engine Rich or Lean???

I just got a Iron Bay Regulator for my Saito 125, the manual just calls for you too richen the HSN 2 turns out than normal. Then you can go ahead and tune as normal. So I did my normal tuning procedures, I leaned HSN until I reached peak RPM then richened until I dropped about 800 RPM. Flying around at about half throttle I have a nice steady smoke stream from the exhaust but as soon as I open to full throttle the smoke disappears. Does this mean anything??
Old 01-10-2009, 09:07 PM
  #2  
chashint
Senior Member
 
Join Date: Dec 2001
Location: Rowlett, TX
Posts: 1,309
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Engine Rich or Lean???

It might mean the LSN is set to rich.
Old 01-10-2009, 09:08 PM
  #3  
w8ye
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,576
Received 9 Likes on 9 Posts
Default RE: Engine Rich or Lean???

If the engine runs good and has good power I wouldn't worry about it
Old 01-10-2009, 09:10 PM
  #4  
w8ye
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,576
Received 9 Likes on 9 Posts
Default RE: Engine Rich or Lean???

ORIGINAL: chashint

It might mean the LSN is set to rich.
Did you ever adjust your low speed mixture as Charlie has mentioned?
Old 01-10-2009, 09:28 PM
  #5  
beachbrada
Senior Member
Thread Starter
My Feedback: (17)
 
Join Date: Feb 2008
Location: Ewa, HI
Posts: 983
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Engine Rich or Lean???

Charles?? Gray Beard?
Old 01-10-2009, 09:29 PM
  #6  
beachbrada
Senior Member
Thread Starter
My Feedback: (17)
 
Join Date: Feb 2008
Location: Ewa, HI
Posts: 983
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Engine Rich or Lean???


ORIGINAL: chashint

It might mean the LSN is set to rich.
I didn't think the LSN would have any effect on anything besides idle.
Old 01-10-2009, 09:37 PM
  #7  
w8ye
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,576
Received 9 Likes on 9 Posts
Default RE: Engine Rich or Lean???

It could cause the smoke you see at the lower speeds
Old 01-10-2009, 09:56 PM
  #8  
FILE IFR
 
FILE IFR 's Avatar
 
Join Date: May 2006
Location: Clinton, MA
Posts: 2,140
Received 1 Like on 1 Post
Default RE: Engine Rich or Lean???

On the ground and at a low idle (while secured), what happens when you go to full power quickly... cough, burble, excess smoke or die?

Does it go to full power instantly with no 'ramp-up' in speed??

Again on the ground From full power to idle, when AFTER the stick is brought to idle will the engine speed be the same or slowly sag???
Old 01-11-2009, 11:13 AM
  #9  
TedMo
Senior Member
 
Join Date: Jun 2006
Location: Sun City Center, FL
Posts: 1,270
Likes: 0
Received 1 Like on 1 Post
Default RE: Engine Rich or Lean???

ORIGINAL: FILE IFR

On the ground and at a low idle (while secured), what happens when you go to full power quickly... cough, burble, excess smoke or die?

Does it go to full power instantly with no 'ramp-up' in speed??

Again on the ground From full power to idle, when AFTER the stick is brought to idle will the engine speed be the same or slowly sag???
This is the test you should use. Smoke from idle is usually common in the air.
Old 01-11-2009, 11:16 AM
  #10  
TedMo
Senior Member
 
Join Date: Jun 2006
Location: Sun City Center, FL
Posts: 1,270
Likes: 0
Received 1 Like on 1 Post
Default RE: Engine Rich or Lean???

ORIGINAL: FILE IFR

On the ground and at a low idle (while secured), what happens when you go to full power quickly... cough, burble, excess smoke or die?

Does it go to full power instantly with no 'ramp-up' in speed??

Again on the ground From full power to idle, when AFTER the stick is brought to idle will the engine speed be the same or slowly sag???
This is the test you should use. Smoke from idle is usually common in the air.[quote]ORIGINAL: FILE IFR


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


Thread Tools
Search this Thread

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.