RE: OS engines overrated?  
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RE: OS engines overrated? - 5/9/2007 8:16:50 PM   
DarZeelon



Posts: 6944
Joined: 4/9/2003
From: Rosh-Ha'Ayin, ISRAEL
Status: offline
quote:

ORIGINAL: donkey doctor

...I have a 10 x 6 on it, too small?



Doc,


Put an 11x6 prop on it, or you will have it running 'over the hill', i.e. beyond the power peak, as it is on the ground.

It's a four-stroke, not a two-stroke .40...


_____________________________

Dar Zeelon - ISRAEL - ddzeelon@gmail.com
MVVS - Jett - Nelson - Bolly - Mejzlik

(in reply to donkey doctor)
       Post #: 176

RE: OS engines overrated? - 5/9/2007 10:07:17 PM   
Red Baron Gary



Posts: 62
Joined: 10/5/2002
From: Sacramento, CA, USA
Status: offline 		Got my question answered by the nice folks at Global Hobbies: the magnum 46 sleeve and piston will NOT interchange with a O.S. 46 fx crankcase.
Red Baron Gary



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"I don't want to see'em crash, but I want to be there when they do." Moore's bromide, r.i.p. '05

(in reply to Red Baron Gary)
       Post #: 177

RE: OS engines overrated? - 5/10/2007 4:55:39 AM   
DarZeelon



Posts: 6944
Joined: 4/9/2003
From: Rosh-Ha'Ayin, ISRAEL
Status: offline 		Guys!


This thread was started by Zephyrus in December last year, asking how other members of RCU rate OS engines.

He did notice many like their ease of operation and he also noticed many hate other attributes of these engines.


I believe some of the 176 replies gave this person a good idea of what we like and of what we dislike about OS...

...and if we think they are worth the premium one has to pay to own an OS and if we think it is justified.


Now, this thread has become a 'garbage can' for all sorts of unrelated questions about OS engines, that those refraining from opening a new thread (which the RCU rules dictate), just chime-in and type them here...


Moderators, let's lock this thread to new, off-subject traffic.

_____________________________

Dar Zeelon - ISRAEL - ddzeelon@gmail.com
MVVS - Jett - Nelson - Bolly - Mejzlik

(in reply to Red Baron Gary)
       Post #: 178

RE: OS engines overrated? - 5/10/2007 6:29:42 AM   
Ed Cregger



Posts: 7618
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline 		Why should any thread be locked, as long as the rules of no profanity, personal abuse, etc., are followed? If one does not wish to participate any further - don't.


Ed Cregger


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Artisan

"Flying models since the Fifties - I'll get the hang of this yet!!!"

(in reply to DarZeelon)
       Post #: 179

RE: OS engines overrated? - 5/10/2007 2:05:33 PM   
Sport_Pilot



Posts: 7597
Joined: 1/21/2002
From: Acworth, GA, USA
Status: offline 		Well to be fair to RCU it is a bit harsh towards a company who makes a good product, and has ads on this forum.

< Message edited by Sport_Pilot -- 5/10/2007 6:55:02 PM >

(in reply to Ed Cregger)
       Post #: 180

RE: OS engines overrated? - 5/10/2007 3:51:59 PM   
Ed Cregger



Posts: 7618
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline 		I missed that part, to be honest with you.

I've never understood why folks want to close threads, or why they get upset if someone resurrects an old one.

My apology to Dar. Gotta get this first cup of coffee down...


Ed Cregger

< Message edited by Ed Cregger -- 5/10/2007 3:53:23 PM >


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Artisan

"Flying models since the Fifties - I'll get the hang of this yet!!!"

(in reply to Sport_Pilot)
       Post #: 181

RE: OS engines overrated? - 5/10/2007 5:42:36 PM   
blw



Posts: 4513
Joined: 3/15/2004
From: Auburn, AL, USA
Status: offline 		Maybe we can get this thread back on track. It has been pretty good about not being an OS bashing forum so far.

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The ultimate responsibility of pilots is to fulfill the dreams of the countless millions who can only stare skyward...and wish.

(in reply to Ed Cregger)
       Post #: 182

RE: OS engines overrated? - 11/10/2007 10:29:43 PM   
grousehunter11


 

Posts: 2
Joined: 10/31/2005
From: Libby, MT, USA
Status: offline 		Im intrested in the fourstar 60 does anybody know any thing about the OS 75 AX

(in reply to Ed Cregger)
       Post #: 183

RE: OS engines overrated? - 11/10/2007 10:47:00 PM   
w8ye



Posts: 17278
Joined: 12/11/2001
From: Taylortown, OH, USA
Status: online 		The hottest, most popular 75 around is the Tower 75.

I haven't seen a OS 75AX but I been around several 46AX's and a 120AX quite a bit.

The AX's are extremely user friendly and likeable engines. I'm sure you will enjoy it.

The Four Star 60 is a very adaptable plane and will fly about the same with a wide variety of engines from 60 - 100 two strokes and 65 to 100 four strokes.

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Attended the CutFinger Institute of DirtNap University for years but never did graduate....

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(in reply to grousehunter11)
       Post #: 184

RE: OS engines overrated? - 11/10/2007 11:46:40 PM   
ajcoholic



Posts: 4032
Joined: 6/22/2002
From: Kirkland Lake, ON, CANADA
Status: offline
quote:

ORIGINAL: grousehunter11

Im intrested in the fourstar 60 does anybody know any thing about the OS 75 AX


Why yes, I do. I am one of the FEW guys here who actually have run that engine, and I actually test flew it in my Sig 4*60. So here is some firsthand experience for you...

The AX75 is a very, very good engine IMO. It is easy to handle (meaning excellent running characteristics) and easy to tune in completely stock form. Its well built and I would think it would provide you with years of excellent running, provided you know how to run engines (not too lean, correct prop and clean fuel, etc).

As for that plane/engine combo, its just about perfect IMO - a lot of power for fun sport aerobatic flying. I did a full review on that engine a few months back for Fly RC Magazine.

But I am sure a lot of guys here who havnt even seen the engine in real life, let alone ran/flown one, will tell you everything thats wrong with it..

AJC


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Andrew J. Coholic
Engine reviewer for FLY RC Magazine - andrewc@flyrc.com

(in reply to w8ye)
       Post #: 185

RE: OS engines overrated? - 11/11/2007 1:41:56 AM   
liquid_TR



Posts: 454
Joined: 4/8/2007
From: ISTANBUL, TURKEY
Status: online 		I would love to try out the 75AX - but the current $200 price tag keeps me from buying one, would buy it at a heart beat if it were something like $140-150..

Ive never used any other brand than OS,Saito and YS in this hobby. (lots of OS engines back in my onroad racer days..) I just love the reliability and user friendlyness of OS engines- 2 or 4stroke. I always find them very expensive, go read reviews of other engines / copies of OS, its competitors; but at the end I end up buying the OS brand no matter what.. Because I know it will run the way I imagine.

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LiQuid TR

(in reply to ajcoholic)
       Post #: 186

RE: OS engines overrated? - 11/11/2007 1:55:01 AM   
AMB


 

Posts: 3833
Joined: 6/10/2003
From: winter park, FL, USA
Status: offline 		One more point for OS when Irvine went off shore they selected OS to make their engines martin

(in reply to liquid_TR)
       Post #: 187

RE: OS engines overrated? - 11/11/2007 10:09:51 AM   
asmund


 

Posts: 1870
Joined: 11/20/2005
From: Floroe, NORWAY
Status: offline
quote:

ORIGINAL: liquid_TR
Ive never used any other brand than OS,Saito and YS in this hobby.


Those are a bunch of great engines for sure, but you are really missing out on alot of other great engines by limiting your mind in that way. Let me mention Rossi, MVVS, Webra, Enya, Irvine and many more, even some cheap ones are great too

(in reply to liquid_TR)
       Post #: 188

RE: OS engines overrated? - 11/12/2007 2:43:41 PM   
50+AirYears


 

Posts: 1147
Joined: 7/29/2004
From: Lorain, OH, USA
Status: offline 		There have been, and are, a lot of very good engine manufacturers around. There are also some marginal ones. There have also been some engines that should never have been allowed on the market.

There have also been some manufacturers who have had spotty quality control, so that some engine batches, or even some engines within a production batch, run great, while others barely run at all. There have even been instances where people with a competition bent, especially in racing and control line combat, will buy a dozen or more of a single engine, regardless of manufacturer, then get out the calipers, disassemble, measure, and mix-and-match parts to get a few engines to meet their requirements.

(in reply to asmund)
       Post #: 189

RE: OS engines overrated? - 11/12/2007 2:52:45 PM   
50+AirYears


 

Posts: 1147
Joined: 7/29/2004
From: Lorain, OH, USA
Status: offline 		An example of one model engine manufacturer not mentioned previously just got written up in the Nov. 8 edition of Machine Design magazine. A 60 cc twin cyclinder engine by RCV has been chosen for a small UAV to be built by Honeywell.

RCV engines generally use a rotating cylinder for the intake/exhaust function.

Might be mentioned in www.machinedesign.com.

(in reply to 50+AirYears)
       Post #: 190

RE: OS engines overrated? - 11/21/2007 7:54:59 PM