Engines, Is it just me or am I just lucky?  
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Engines, Is it just me or am I just lucky? - 3/10/2002 1:08:45 AM   
uciflylow



Posts: 78
Joined: 3/4/2002
From: Union City, TN
Status: offline 		I have read all the post about this engine and that engine not being good.

I have had OS,Thunder Tiger,MDS,Super Tigre,Tower Hobbies,Fox,K&B, and Magnum.
I haven't had one that I couldn't get to run and run acceptible! The OS and TT are the easiest to adjust by far. Next in line is the Super Tigre. The others are on about the same plain to me, as far as taking some tinkering to run well.

Has anyone else had some of these same experences? Has the ease of setting up the OS and TT spoiled everyone? Let's hear it!
       Post #: 1

Engines, Is it just me or am I just lucky? - 3/10/2002 1:22:06 AM   
Fuelman


 

Posts: 1017
Joined: 12/31/2001
From: Jordan, NY, USA
Status: offline 		I think that required reading for anybody owning a 2-stroke should be David Geirke's book "The 2-Stroke Glow Engine"


Fuelman


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Fuelman
Cooper Fuels LLC

(in reply to uciflylow)
       Post #: 2

Engines, Is it just me or am I just lucky? - 3/10/2002 1:26:56 AM   
gubbs3



Posts: 1403
Joined: 12/8/2001
From: Coon Rapids, MN, USA
Status: offline 		I guess I've been lucky too. Every engine I've had has run well. There was one the had a defective part in the carb but that was sorted out. So I'm 6 for 6.

(in reply to uciflylow)
       Post #: 3

Engines - 3/10/2002 1:31:39 AM   
Hobbsy



Posts: 10521
Joined: 12/2/2001
From: Colonial Beach, VA, USA
Status: offline 		At the present time I have 78 engines, SuperTigre, Fox, K&B, Saito, HiMax, Merco, OPS, MDS, Zeus, Abitar, Fitzpatrick, Enya, Zenoah, PAW, Moki, Laser, Webra, Graupner/wankel, Fuji/Mustang 50 and a YS .91FZ on the way. There are no bad engines, at least not in this bunch.

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"I have gone faster backwards, upside down and on fire than most people have gone at all" Don Garlits

(in reply to uciflylow)
       Post #: 4

Touche Fuelman - 3/10/2002 1:46:14 AM   
bob_nj


 

Posts: 3479
Joined: 12/3/2001
From: Vineland, NJ, USA
Status: offline 		That's my mantra

(in reply to uciflylow)
       Post #: 5

WANKEL ENGINES - 3/10/2002 7:31:29 AM   
captinjohn


 

Posts: 5570
Joined: 1/25/2002
From: Hesperia, MI, USA
Status: offline 		Hobbsy: What can you tell us about the wankel type engines. How are they for power and fuel comsumption? Tjhanks Captin John

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I never met a engine I did not like!

(in reply to uciflylow)
       Post #: 6

Wankel - 3/10/2002 8:03:46 AM   
Hobbsy



Posts: 10521
Joined: 12/2/2001
From: Colonial Beach, VA, USA
Status: offline 		Cap, I don't have it all the way broke in yet but already know it is thirsty, it is a .30 and a 10x6 is the only prop recommended, it is on an UltraStik 40 that I need some more servos for. I'll keep you posted. Supposedly it makes power like a 40 which I believe because when I opened the throttle to full for a few seconds it really howled.

_____________________________

"I have gone faster backwards, upside down and on fire than most people have gone at all" Don Garlits

(in reply to uciflylow)
       Post #: 7

Engines, Is it just me or am I just lucky? - 3/10/2002 8:11:37 AM   
Scorpionjack



Posts: 656
Joined: 12/3/2001
From: Minot, ND, USA
Status: offline 		Really Howled? Did you tach it? What was the Rpm? What Fuel?

(in reply to uciflylow)
       Post #: 8

Engines, Is it just me or am I just lucky? - 3/10/2002 9:25:17 AM   
bigbri


 

Posts: 559
Joined: 2/11/2002
From: salem, MA, USA
Status: offline 		about 10 years ago I sold my friend a Magnum 45 engine for a fraction of what it cost me, and warned him the engine was "junk". I could not get it to run properly and all the fliers in the area told me it was worthless........Well....he still has it in p-40, Both the airplane and the engine are 10 years old and he tells me the engine has run flawlessly this whole time..........Although he was upset that he just had to replace a glow plug that has just given him 3 years of service... LOL
So I guess my point is are there really any poor running engines or do some of us need to learn more about running these engines before we start talking poorly about a particular brand??????????
my 2 cents
Brian

(in reply to uciflylow)
       Post #: 9

Very well put bigbri - 3/10/2002 3:40:00 PM   
bob_nj


 

Posts: 3479
Joined: 12/3/2001
From: Vineland, NJ, USA
Status: offline 		Alot of how an engine performs is in the way it is broken in. It's amazing how many of us don't properly do that. An engine is a ganging of tolerances that needs proper "heat cycling"

(in reply to uciflylow)
       Post #: 10

Engines, Is it just me or am I just lucky? - 3/10/2002 8:10:16 PM   
Dave Barrow-RCU



Posts: 406
Joined: 12/9/2001
From: Covington Ky 41015
Status: offline 		I too have had many different brands of engines, OS, TT, ST, Saito, Enya, K&B, Cox, Irvine, Magnum. I haven't had any that couldn't be made to run decently, although some were a pain to adjust properly, and others didn't make much power. The OS's are the best that I've had though (.25,.40,.45,.46,.61,.77 2-stroke and .48,.70,.91,.120 4-stroke).

(in reply to uciflylow)
       Post #: 11

engines - 3/11/2002 9:50:09 AM   
captinjohn


 

Posts: 5570
Joined: 1/25/2002
From: Hesperia, MI, USA
Status: offline 		Bobnj: I got to agree with you on breakin. Also some people have a good ear for that ever so important hi-speed setting. Thanks John

_____________________________

I never met a engine I did not like!

(in reply to uciflylow)
       Post #: 12

Ten Four Captain - 3/11/2002 4:55:26 PM   
bob_nj


 

Posts: 3479
Joined: 12/3/2001
From: Vineland, NJ, USA
Status: offline 		I am constantly amazed by the mass of flyers who cannot hear the unmistakeable whine of a bad engine bearing. They just keep on running the thing until the cage disintegrates and spews shrapnel all over the place. Then, then, they wonder what happened

(in reply to uciflylow)
       Post #: 13

Engines, Is it just me or am I just lucky? - 3/11/2002 8:12:49 PM   
uciflylow



Posts: 78
Joined: 3/4/2002
From: Union City, TN
Status: offline 		What does a bad bearing sound like? I have an OS 46fx that makes a sound different from any of the others I have. It has always made this noise from the start so I didn't suspect a bearing.
Are bearing hard to replace, and where is the best place to get them from?

(in reply to uciflylow)
       Post #: 14

Engines, Is it just me or am I just lucky? - 3/11/2002 8:58:13 PM   
Scorpionjack



Posts: 656
Joined: 12/3/2001
From: Minot, ND, USA
Status: offline 		Bearing are fairly easy to replace if you take care and know not to force things.
Front and rear bearing removal on most two strokes:
1. Remove prop
2. Remove thrust washer
3. Remove thrust cone if it has one
4. remove backplate (before removing back plate mark the backplate and the case so the orientation on reassemble is the same)
5. Remove the head (Same thing mark the head and case so orientation is the same on reassembly)
6. Try and remove the sleeve from the Top of the crankcase. If it's very tight or possibly varnished you may need to heat it up.
7. With the Sleeve removed you can now remove the piston by sliding the rod off of the crankshaft from the back plate area of the crankcase. Now slide the Piston and Rod out the top where you removed the Sleeve.
8. You can now remove the crank shaft from the rear by exerting pressure from the prop nut side. Sometimes while holding the engine in one hand a little more persuasion is needed (a rubber hammer while holding it and striking the Crankshaft after the nut is put on just slightly).

9. You now have a crankcase with just the bearings in. In order to get these out without damage to the case. There is many methods. a few methods are these:

a. Minature bearing puller
b. Heat (aka I put the crankcase in a crockpot of anti-freeze for about 2 hrs. and the bearings come right out).
c. make a hook out of strong piece of piano wire and insert it so it just fits behind the bearing moving the wire in a pattern so as to cover all the radius, it should ease out as well. This requires heat also.
Don't! Force any part! Forcing causes damage! striking or using tools that are harder than the product can also cause damage.

10. Replacing the bearings is basically working in reverse as I explained above. But the Inside bearing once placed in positon can be snugged into place with the front bearing using the crankshaft to keep everything aligned.

(in reply to uciflylow)