O.S 1.60FX Owners. Post your tach readings  
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O.S 1.60FX Owners. Post your tach readings - 9/11/2002 12:14:49 AM   
rvd



Posts: 398
Joined: 2/7/2002
From: CA
Status: offline 		10% nitro, 20%oil syn/cas blend, O.S #8, 18X8 Zinger Bisson Pitts Muffler 7700rpm If i try to get more it starts to get crackly from detonation.
       Post #: 1

O.S 1.60FX Owners. Post your tach readings - 9/11/2002 5:17:07 AM   
rvd



Posts: 398
Joined: 2/7/2002
From: CA
Status: offline 		Also state your location

(in reply to rvd)
       Post #: 2

O.S 1.60FX Owners. Post your tach readings - 9/11/2002 5:26:14 AM   
skerlock



Posts: 260
Joined: 3/13/2002
From: sandiego, CA,
Status: offline 		Zinger Pro 18/8
Apc 18/8
Menz 18/8
Mejzlik 18/8

all ran on 160 O.S
no Fuel Pump
pitts Style Bisson muffler

We Ran the engine to the lean setting ( set by Tach..Not by Ear) then backed off apx. 200 Rpm for Flight so as not to lean out during flight

Results

Zinger Pro 8500-8600 Rpm 6 decibles above the Menz, Mejzlik
Apc 8400-8500 Rpm 6 decibles above the Menz, Mejzlik
Mesjlix 8000-8100 Rpm 96 Decibles at 10 feet
Menz 7700-7800 Rpm 96 Decibles at 10 feet


I fly the Mejzlik on a H9 Edge,

Scott

(in reply to rvd)
       Post #: 3

oops - 9/11/2002 5:29:05 AM   
skerlock



Posts: 260
Joined: 3/13/2002
From: sandiego, CA,
Status: offline 		15% nitro
same plug

San Diego, CA

Scott

(in reply to rvd)
       Post #: 4

O.S 1.60FX Owners. Post your tach readings - 9/11/2002 6:22:26 AM   
lennyk


 

Posts: 567
Joined: 12/8/2001
From: Port of Spain, FL, USA
Status: offline 		Master Airscrew Scimitar 18x8 8550rpm
APC 17x8 9100rpm
Coolpower 15% slightly rich
Very hot humid tropics

(in reply to rvd)
       Post #: 5

O.S 1.60FX Owners. Post your tach readings - 9/11/2002 6:35:54 AM   
rvd



Posts: 398
Joined: 2/7/2002
From: CA
Status: offline 		Hmmm I wonder why mine is so low.... Maybe it's the nitro content.. I can't see going from 10-15% giving 800+ rpm
then again you never know

(in reply to rvd)
       Post #: 6

O.S 1.60FX Owners. Post your tach readings - 9/11/2002 6:50:07 AM   
davham



Posts: 476
Joined: 1/26/2002
From: midwest, MO, USA
Status: offline 		APC 18X8N
15% coolpower
OS A3 plug
Stock muffler
600ft elev
8700 rpm
This is after four gallons.

Dave

(in reply to rvd)
       Post #: 7

Figures to come - 9/11/2002 8:15:59 AM   
Aerosplat



Posts: 707
Joined: 12/11/2001
From: Lawrenceville, GA, USA
Status: offline 		I have just purchased an OS 160 FX. It will be next week before I can start break-in and testing. My bench setup is engineered for me to obtain very accurate static thrust measurements. I will start with the Stock OS muffler, Cool Power 15%, and an APC 18x6W prop. After break-in, I will change to the new SlimLine inverted Pitts muffler, and probably a Cline regulator.

My ST 2300 turns the APC 18x6W at 8700 rpm, and develops 17lbs, 2 oz static thrust. I am hoping the OS 160 will get another 400 - 500 rpm on the same prop. That should develop over 18 lbs static thrust.

I will post results when I have them.

_____________________________

---- Robert ----
"If you put a big enough engine on it, even a brick will fly. But it will never 3-D"

(in reply to rvd)
       Post #: 8

O.S 1.60FX Owners. Post your tach readings - 9/11/2002 10:00:06 PM   
Matt Kirsch



Posts: 7087
Joined: 7/5/2002
From: Rochester, NY, USA
Status: offline 		9200 on an 18x6W APC, using YS 20/20 blend in Upstate New York.

(in reply to rvd)
       Post #: 9

O.S 1.60FX Owners. Post your tach readings - 9/11/2002 10:11:01 PM   
lennyk


 

Posts: 567
Joined: 12/8/2001
From: Port of Spain, FL, USA
Status: offline 		How much slower do your planes fly with the 6 pitch props ?

I am using 18x8 on GP Giles 202 and want to try an 18x6
I don't want it to be slow and mushy though.

(in reply to rvd)
       Post #: 10

18x6 vrs 18x8 - 9/12/2002 5:23:48 AM   
Aerosplat



Posts: 707
Joined: 12/11/2001
From: Lawrenceville, GA, USA
Status: offline 		The last plane I flew with the 18x6W was a H9 120 size Ultra stick. It had plenty of airspeed for me. Biggest advantages of the 18x6W is the vertical pulling power and down line breaking. This is a wide blade prop (Fun Fly). ON my ST 2300 at 8700 rpm it would hover my Ultra Stick ( 14.5 lbs wet). And pulling the throttle back to idle is like putting on the air brakes.

_____________________________

---- Robert ----
"If you put a big enough engine on it, even a brick will fly. But it will never 3-D"

(in reply to rvd)
       Post #: 11

First figures - 9/12/2002 5:31:10 AM   
Aerosplat



Posts: 707
Joined: 12/11/2001
From: Lawrenceville, GA, USA
Status: offline 		I got an unexpected break this afternoon, so I fired up the OS 160. Brand new out of the box. It started on 3rd flip. I ran two 14 oz tanks of 15% Cool Power through it. Kept it rich according to break-in instructions in book.
First numbers - at end of 2nd tank, still very rich, stock OS muffler:
APC 18x6W -- 8850 - 8950 rpm. Lifted 17 lbs, 10 oz on my test setup.
I can tell I am going to like this engine.

More to come next week.....

< Message edited by Aerosplat -- Oct 3 2002 2:04AM >

_____________________________

---- Robert ----
"If you put a big enough engine on it, even a brick will fly. But it will never 3-D"

(in reply to rvd)
       Post #: 12

O.S 1.60FX Owners. Post your tach readings - 9/12/2002 9:24:22 AM   
LuvBipes



Posts: 1081
Joined: 12/29/2001
From: Luxembourg City, LUXEMBOURG
Status: offline 		APC 18X8, 10% Omega, OS #8 plug, 200' above sea level = 8600 rpm. Nice engine.

_____________________________

Keep your eyes in the skies and your future should follow.

(in reply to rvd)
       Post #: 13

3 flips... 2 to many... - 9/12/2002 9:48:10 AM   
skerlock



Posts: 260
Joined: 3/13/2002
From: sandiego, CA,
Status: offline 		Ok heres the drill..open your carb wide open...put your finger over the carb and rotate(not Flip the prop) counter clockwise 5(five) times. This puts the fuel in the crank case. next close the carb..and flip the prop counter clockwise (with out the finger) ..3-5 times ( this brings the fuel to the piston)..If you have mounted your prop so it is horizontal on the Back side of the compression stroke..then position the prop vertical..apply the glow while holding the prop.. now rotate the prop clockwise just before the back of the compression stroke..now place two fingers close to the spinner on the front of the prop do not cross the 1/2 way point foreword to back..now just flip the prop no more then 1/2 inch clockwise and it will start Every time....This is the most dependable motor I have ever owned.

Scott

(in reply to rvd)
       Post #: 14

Not that big of a deal - 9/12/2002 12:48:02 PM   
Aerosplat



Posts: 707
Joined: 12/11/2001
From: Lawrenceville, GA, USA
Status: offline 		Thanks for the detailed break down on the start sequence. The 3 flips was on the very first start. After that it started on the first flip every time. I'm not concerned about starting. Besides, as soon as I get a spinner I will use my electric starter. Actually I do not like spinners, so I ordered an aluminum spinner nut from PSP Manufacturing [url]www.pspmfg.com[/url] . Dubro does not make a 3/8 x 24 nut.

_____________________________

---- Robert ----
"If you put a big enough engine on it, even a brick will fly. But it will never 3-D"

(in reply to rvd)
       Post #: 15

Love the 160 - 9/12/2002 8:12:16 PM   
skerlock



Posts: 260
Joined: 3/13/2002
From: sandiego, CA,
Status: offline 		I like the engine so much that when I get the chance I talk it up as much as possible..I just wanted to back up your claim and happiness of this engine..

Have Fun

Scott