RE: O.S 1.20AX Owners. Post your tach readings  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Tachometer Readings >> RE: O.S 1.20AX Owners. Post your tach readings
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RE: O.S 1.20AX Owners. Post your tach readings - 8/28/2007 10:30:44 PM   
Huckaneer



Posts: 63
Joined: 11/28/2005
From: springside, SK, CANADA
Status: offline 		9600 rpm with APC 17 x 6
stock muffler with baffler removed
hauls a funtana 90 around with great authority
hover at 1/2 throttle and starts first or second flip

AWESOME ENGINE

(in reply to Gungadin)
       Post #: 26

RE: O.S 1.20AX Owners. Post your tach readings - 4/15/2008 12:04:33 AM   
planeblahblah


 

Posts: 42
Joined: 6/3/2006
From: Sherman Oaks, CA, USA
Status: offline 		APC 14x14
PowerMaster 15%
Full Tuned Pipe
10000 rpm

hauls on my 40 Wm Mustang

(in reply to vlado)
       Post #: 27

RE: O.S 1.20AX Owners. Post your tach readings - 4/15/2008 5:15:57 AM   
enephel


 

Posts: 140
Joined: 3/20/2004
From: Clinton, OH, USA
Status: offline 		40 oz. run in. APC 17X4W 9,600rpm. Bisson pitts. LHS is out of 17X6. Changed exhaust to Macs header and home made aluminum beer bottle muffler. Momentarily I got 10,200. Whoa! That''s enough of that. As soon as the engine hits 10,000 the muffler pops off. 17X4W is not enough. need 17X6 or 7. Maybe a 18X5 wood.

Does a 18X5 exist besides a Zinger?

(in reply to planeblahblah)
       Post #: 28

RE: O.S 1.20AX Owners. Post your tach readings - 4/15/2008 8:17:42 AM   
liquid_TR



Posts: 454
Joined: 4/8/2007
From: ISTANBUL, TURKEY
Status: online 		15% nitro CoolPower + 3% castor

Sea level

JXF Wood 17x6 (wider blades than APC 17x6) - 9000 rpm.

_____________________________

LiQuid TR

(in reply to enephel)
       Post #: 29

RE: O.S 1.20AX Owners. Post your tach readings - 5/7/2008 4:42:46 AM   
enephel


 

Posts: 140
Joined: 3/20/2004
From: Clinton, OH, USA
Status: offline 		Zinger 18X5 8600rpm. Haven't flown the model yet.

Peak Extra 260
8 lbs. 11 ozs.
22 lbs thrust.

Should be a blast.

< Message edited by enephel -- 5/7/2008 5:16:05 AM >

(in reply to liquid_TR)
       Post #: 30

RE: O.S 1.20AX Owners. Post your tach readings - 5/31/2008 2:37:18 AM   
alfredbmor



Posts: 1001
Joined: 6/1/2005
From: El Paso, TX, USA
Status: offline 		APC 16 x 8; Omega 15%; Elevation 4,000 ft. above sea level:
Peak 9,000
Tuned for steady 8,800 WOT
Idle 1,800

I am ordering a Zinger 17 x 6 as well as an APC 17 x 6.
I will be flying my Carl Goldberg Ultimate and OS 1.20 AX with APC 16 x 8 next sunday.

Nice engine.

_____________________________

Saito Club Member

(in reply to enephel)
       Post #: 31

RE: O.S 1.20AX Owners. Post your tach readings - 7/2/2008 2:20:49 AM   
CustomPC


 

Posts: 349
Joined: 4/19/2004
From: SydneyNSW, AUSTRALIA
Status: offline 		I started a new 1.20AX fitted with a Jett Engineering Turbo-Jett muffler.

With a Xoar 17x6 wood prop i saw 9,150rpm on the tacho with the engine just breaking into a smooth 2-cycle. I was keeping it deliberately rich for the 1st run to break-in.

Fuel used was 15% nitro, 15% Coolpower oil and 3% Castor.

(in reply to alfredbmor)
       Post #: 32

RE: O.S 1.20AX Owners. Post your tach readings - 7/2/2008 4:59:55 PM   
bob27s



Posts: 4710
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: offline 		not too bad


_____________________________

Bob Brassell
Jett Engineering - Engine Mfg Support Forum Host

(in reply to CustomPC)
       Post #: 33

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Tachometer Readings >> RE: O.S 1.20AX Owners. Post your tach readings
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