Notices
Glow Engines Discuss RC glow engines

Counterfeit OS #8 Glow Plug Test

Old 02-11-2024, 10:03 PM
  #1  
the Wasp
Thread Starter
My Feedback: (1)
 
Join Date: Sep 2003
Location: VT
Posts: 5,366
Likes: 0
Received 40 Likes on 38 Posts
Default Counterfeit OS #8 Glow Plug Test

Old 02-12-2024, 07:53 AM
  #2  
Jesse Open
 
Jesse Open's Avatar
 
Join Date: Mar 2018
Location: 30 Miles North of Canada Border
Posts: 3,713
Received 90 Likes on 82 Posts
Default

That was good.
My local hobby shop refuses to order the Chinese plugs for me. Guess I will look on line.
Old 02-12-2024, 08:15 PM
  #3  
the Wasp
Thread Starter
My Feedback: (1)
 
Join Date: Sep 2003
Location: VT
Posts: 5,366
Likes: 0
Received 40 Likes on 38 Posts
Default

why would you want to use them?

the real test, would be to try to run one in an engine for 4 or 5 gallons in the air.
Old 02-13-2024, 07:00 AM
  #4  
Jesse Open
 
Jesse Open's Avatar
 
Join Date: Mar 2018
Location: 30 Miles North of Canada Border
Posts: 3,713
Received 90 Likes on 82 Posts
Default

Yessir, durability takes a bit longer to evaluate.

Notice the OS plug had the benefit of needle touch ups when it ran poorly.

The Chinese plug got no touch up, was expected to run fine without that.
Old 02-13-2024, 04:40 PM
  #5  
RCoffroadracer
 
Join Date: Nov 2014
Location: ohio
Posts: 97
Received 7 Likes on 7 Posts
Default

first of all you're not buying a "inexpensive" plug made from Rhodium like the $12 OS plug. rhodium is about $8k an ounce. it looks like they might have found a good alternative metal for coil. likely what was going on is a difference in the heat range of the plug doesn't match the OS plug.
I find OS engines to be very finicky. I have thunder tiger engines in a few things and they're much easier to tune and keep running and STARTING. OS engines I have to fight to start for some reason. we don't get along.
me and my brother tried getting a old new in box OS 40LA engine to run the other day and it's a bear. I literally broke my new plane's fuselage around the engine because its so hard for the hi torq sullivan starter to rotate. it even broke the darn nose cone off. LOL. this darn OS engine needs to be heated with a heat gun I guess.

Last edited by RCoffroadracer; 02-13-2024 at 05:01 PM.
Old 02-13-2024, 08:14 PM
  #6  
the Wasp
Thread Starter
My Feedback: (1)
 
Join Date: Sep 2003
Location: VT
Posts: 5,366
Likes: 0
Received 40 Likes on 38 Posts
Default

Originally Posted by RCoffroadracer
first of all you're not buying a "inexpensive" plug made from Rhodium like the $12 OS plug. rhodium is about $8k an ounce. it looks like they might have found a good alternative metal for coil. likely what was going on is a difference in the heat range of the plug doesn't match the OS plug.
I find OS engines to be very finicky. I have thunder tiger engines in a few things and they're much easier to tune and keep running and STARTING. OS engines I have to fight to start for some reason. we don't get along.
me and my brother tried getting a old new in box OS 40LA engine to run the other day and it's a bear. I literally broke my new plane's fuselage around the engine because its so hard for the hi torq sullivan starter to rotate. it even broke the darn nose cone off. LOL. this darn OS engine needs to be heated with a heat gun I guess.
the OS LA 40 is a well loved engine. with that^ problem. it sounds like it has too much compression. so first thing I would do to that 40 is remove the head and see if it has a "Head Shim" in it.
the 2nd. I would try a longer prop. the longer prop would have more momentum that will help pull the engine threw it's compression stroke.
Old 02-13-2024, 08:26 PM
  #7  
the Wasp
Thread Starter
My Feedback: (1)
 
Join Date: Sep 2003
Location: VT
Posts: 5,366
Likes: 0
Received 40 Likes on 38 Posts
Default

oops.
to add, the pic at the end of the video shure shows the counterfeit plug is different than the OS plug.
Old 02-15-2024, 11:11 PM
  #8  
1QwkSport2.5r
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 10,406
Received 74 Likes on 67 Posts
Default

I don’t use OS plugs because other brands perform so much better. I get a laugh whenever counterfeit OS glow plug threads pop up.
Old 02-18-2024, 05:45 PM
  #9  
RCoffroadracer
 
Join Date: Nov 2014
Location: ohio
Posts: 97
Received 7 Likes on 7 Posts
Default

Originally Posted by the Wasp
the OS LA 40 is a well loved engine. with that^ problem. it sounds like it has too much compression. so first thing I would do to that 40 is remove the head and see if it has a "Head Shim" in it.
the 2nd. I would try a longer prop. the longer prop would have more momentum that will help pull the engine threw it's compression stroke.
you know what, I had installed a 10x6 prop because that's what the manual suggest for a trainer plane. but the os manual says to break the engine in with a 11x5. I'm going to swap out the prop to 11x5 and I bought a dubro alum prop nut too. the stock os nut keeps backing off and then the plastic nose cone slips. I can't literally tighten the thing any more because I'm about to snap the prop. it's insane how much trouble it's giving me.
it's so hard to spin it feels hydrolocked.
Old 02-18-2024, 09:06 PM
  #10  
the Wasp
Thread Starter
My Feedback: (1)
 
Join Date: Sep 2003
Location: VT
Posts: 5,366
Likes: 0
Received 40 Likes on 38 Posts
Default

Originally Posted by RCoffroadracer
you know what, I had installed a 10x6 prop because that's what the manual suggest for a trainer plane. but the os manual says to break the engine in with a 11x5. I'm going to swap out the prop to 11x5 and I bought a dubro alum prop nut too. the stock os nut keeps backing off and then the plastic nose cone slips. I can't literally tighten the thing any more because I'm about to snap the prop. it's insane how much trouble it's giving me.
it's so hard to spin it feels hydrolocked.
that is just how an engine will react/feel if it doesn't have a Head Shim, too much compression.
Old 02-23-2024, 09:32 PM
  #11  
Jesse Open
 
Jesse Open's Avatar
 
Join Date: Mar 2018
Location: 30 Miles North of Canada Border
Posts: 3,713
Received 90 Likes on 82 Posts
Default

I use only O.S. "F" plugs and, at times Enya#3 in all of my four strokes. Never found anything I liked better. Very consistent and the durability is superb. A few years back, the mix included Merlin plugs. They were quite good.

At the current rate of replacement, my present stock of O.S. "F" plugs should last at least 12 more years.


Last edited by Jesse Open; 02-23-2024 at 09:40 PM.
Old Yesterday, 07:56 PM
  #12  
the Wasp
Thread Starter
My Feedback: (1)
 
Join Date: Sep 2003
Location: VT
Posts: 5,366
Likes: 0
Received 40 Likes on 38 Posts
Default

I once bought a well used Fok Wolf Bi. with a TT GP 40 in it. flew it and flew it for 2 years, I loved it. when it crashed into Bolivian I pulled the engine. pulled the plug, it was a horribly black OS F. it must have been in there for years and years.

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.