Glow Engines Discuss RC glow engines

So the break in went well or not?

Reply

Old 02-09-2009, 12:47 AM
  #1  
Alex7403
Senior Member
Thread Starter
 
Alex7403's Avatar
 
Join Date: Jun 2004
Location: New york, NY
Posts: 1,594
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default So the break in went well or not?

Hello,

The motor is OS 91 FX, Fuel with castor oil 20%.
Started it opened full throttle and opened the needle valve to max to the point the motor doesn’t shot off.
It was running and spitting a lot of oil from the muffler closed the needle valve several times so it got to higher RPM.
What is bothering me is that it was not smooth at all and I run 5 tanks like this, then adjusted the low end screw on the carb closing about 1 turn in total doing it gradually using another two fuel tanks for this process.
Now the motor is running smooth.
So I did this break in with a non smooth engine, is it bad?

Thanks
Alex

Alex7403 is offline  
Reply With Quote
Old 02-09-2009, 02:13 AM
  #2  
Alex7403
Senior Member
Thread Starter
 
Alex7403's Avatar
 
Join Date: Jun 2004
Location: New york, NY
Posts: 1,594
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: So the break in went well or not?

Let me ask it this way how bad is it if the break in went when the low end mixture valve was not adjusted and the engine was not running smooth
and adjusted later?
Alex7403 is offline  
Reply With Quote
Old 02-09-2009, 04:03 AM
  #3  
asmund
Senior Member
 
Join Date: Nov 2005
Location: Floroe, NORWAY
Posts: 2,825
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: So the break in went well or not?

Sounds fine to me, the engine will never run smooth during slobbery rich break-in anyway, so don`t be bothered with that. It is normal to adjust the low end needle only after the break in is completed, just like you have done

Now go and fly that engine
asmund is offline  
Reply With Quote
Old 02-09-2009, 05:21 AM
  #4  
Alex7403
Senior Member
Thread Starter
 
Alex7403's Avatar
 
Join Date: Jun 2004
Location: New york, NY
Posts: 1,594
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: So the break in went well or not?

yes now that im thinking i couldnt do it any other way.
Alex7403 is offline  
Reply With Quote
Old 02-09-2009, 08:32 AM
  #5  
Ram Jet
Senior Member
 
Ram Jet's Avatar
 
Join Date: Aug 2008
Location: Burtchville, MI
Posts: 2,158
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: So the break in went well or not?

ORIGINAL: alex7403

Let me ask it this way how bad is it if the break in went when the low end mixture valve was not adjusted and the engine was not running smooth
and adjusted later?
All of my engines have RC carbs on them and I break mine in on a very rich 24% mixture at full throttle and conrol the engine RPM with the high speed needle. Works for me.

Bill
Ram Jet is offline  
Reply With Quote
Old 02-09-2009, 11:29 AM
  #6  
jaka
 
Join Date: Dec 2001
Location: Upplands Vasby, SWEDEN
Posts: 7,784
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: So the break in went well or not?

Hi!
Isn't the OS .91FX an ABC engine (ABN)!?
Running it slobbering rich isn't right! ABN and ABC engines should always be run at near max rpm or there about.

Slobbering rich is for ringed engines!
jaka is offline  
Reply With Quote
Old 02-09-2009, 11:58 AM
  #7  
NM2K
Senior Member
My Feedback: (14)
 
Join Date: Jan 2002
Location: Ringgold, GA
Posts: 11,488
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: So the break in went well or not?


ORIGINAL: alex7403

Let me ask it this way how bad is it if the break in went when the low end mixture valve was not adjusted and the engine was not running smooth
and adjusted later?


With the majority of glow engines, you cannot damage the engine regardless of where the low speed needle is set. It just won't run properly. There used to be some engines in the past (Fox) that could be damaged by running too lean of a low speed mixture. I am not aware of any engine produced today that works the same way as the Fox.

Running a ringed engine very rich through the break-in period is almost always the proper thing to do. They will vibrate, miss and jump around some if your engine mount or model isn't all that solid. That is normal.

Be sure to check all of the fasteners for tightness. In fact, this is a good thing to do several times a year anyway, assuming that you are flying this engine regularly.

Congratulations! It sounds as though you got through the break-in period successfully. I hope you get many, many enjoyable flights with your top notch OS engine.


Ed Cregger
NM2K is offline  
Reply With Quote
Old 02-09-2009, 12:01 PM
  #8  
NM2K
Senior Member
My Feedback: (14)
 
Join Date: Jan 2002
Location: Ringgold, GA
Posts: 11,488
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: So the break in went well or not?

True, Jaka, but with the ABL set up used by OS, I doubt if it hurt anything to run it rich. I was wondering the same thing - ringed or non ringed? Still, it sounds as though he got through it fine.


Ed Cregger
NM2K is offline  
Reply With Quote
Old 02-09-2009, 12:04 PM
  #9  
Alex7403
Senior Member
Thread Starter
 
Alex7403's Avatar
 
Join Date: Jun 2004
Location: New york, NY
Posts: 1,594
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: So the break in went well or not?

Thanks guys, it was vibrating so much i thought its gonna brake the mount...


ORIGINAL: jaka

Slobbering rich is for ringed engines!
the OS 91 FX has a ring.

Alex7403 is offline  
Reply With Quote
Old 02-09-2009, 01:06 PM
  #10  
asmund
Senior Member
 
Join Date: Nov 2005
Location: Floroe, NORWAY
Posts: 2,825
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: So the break in went well or not?

The 91 FX is steel sylinder and has a ring. He did a perfect break in
asmund is offline  
Reply With Quote
Old 02-09-2009, 03:04 PM
  #11  
Ram Jet
Senior Member
 
Ram Jet's Avatar
 
Join Date: Aug 2008
Location: Burtchville, MI
Posts: 2,158
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: So the break in went well or not?

As Sly Stone said "Different Strokes For Different Folks".

Bill
Ram Jet is offline  
Reply With Quote
Old 03-13-2019, 09:32 AM
  #12  
mmassey
 
Join Date: Sep 2008
Location: Bay City, MI
Posts: 8
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

looking for new bearings and seals for an os61fs any help will be appreciated.
Thanks,
Mike M
mmassey is offline  
Reply With Quote
Old 03-13-2019, 01:46 PM
  #13  
Hobbsy
My Feedback: (101)
 
Hobbsy's Avatar
 
Join Date: Dec 2001
Location: Colonial Beach, VA
Posts: 18,928
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

https://www.bocabearings.com/product...=FS&feature=61

These should do it.
Hobbsy is offline  
Reply With Quote
Old 03-13-2019, 03:03 PM
  #14  
A. J. Clark
 
A. J. Clark's Avatar
 
Join Date: Mar 2004
Location: Craigville, IN
Posts: 410
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

You wouldn't have hurt it any run rich. To fully break it in you several more tanks to go at closer to a normal needle setting. I have always run 3 to 4 tank full at a rich setting on glow engines on the ground. Then fly to finsh the break in.
A. J. Clark is online now  
Reply With Quote
Old 03-13-2019, 05:41 PM
  #15  
the Wasp
My Feedback: (1)
 
Join Date: Sep 2003
Location: VT
Posts: 3,368
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

as for the 61FX, I and many others have complained about the OS remote needle valve, so just know if you have problems with your engine staying in tune you should check to see if you have a lot of bubbles in the fuel line to the Carb,

Jim
the Wasp is offline  
Reply With Quote
Old 03-14-2019, 04:41 AM
  #16  
1QwkSport2.5r
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 9,662
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

The first half of this thread is 10 years old fellas. Those members are probably long gone.
1QwkSport2.5r is online now  
Reply With Quote
Old 03-14-2019, 09:36 AM
  #17  
the Wasp
My Feedback: (1)
 
Join Date: Sep 2003
Location: VT
Posts: 3,368
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Originally Posted by 1QwkSport2.5r View Post
The first half of this thread is 10 years old fellas. Those members are probably long gone.
you know this site can be screwy at times, I have had trouble with it more than once, I even complained to RCU without receiving a reply. well yesterday before I posted I did look for a date when the OP started this thread and there was NO date, so I replied. now with that I have to be truthful here, LOL yes LOL the other day I replied to the OS 50SX post and then later I found it too was an old thread, so that is why I looked yesterday for a date on this post.

the problems I have with the site is that sometimes it will not submit all that I have typed out, the last time this happened to me I found that it has something to do with using "(", ")" and "<" ,">",, but I am not sure just what the problem is

Jim
the Wasp is offline  
Reply With Quote
Old 03-17-2019, 09:11 AM
  #18  
jaka
 
Join Date: Dec 2001
Location: Upplands Vasby, SWEDEN
Posts: 7,784
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Hi!
Still kicking!
jaka is offline  
Reply With Quote

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