Nerevar
Posts: 260
Joined: 6/2/2005
From: *, USA
Status: offline
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quote:
ORIGINAL: Ed_Moorman
I think I can run any single engine and I have at least one of nearly every type that I fly to back that up. I own OS, Thunder Tiger, Webra, Tower, Magnum, MVVS, GMS, SK, Evo 2-strokes (and maybe a couple of others I have overlooked). On a single engine plane, they all run pretty well. The OS engines do break in quicker and seem to be easier to get dialed in. Several of my OSs have never had the low end needle touched.
However, when it comes to multi-engine, I am OS all the way. A couple of my early twins had Magnum .52XLS engines and GMS .47 engines. I just could not keep both engines dialed in and running without messing with them every flight. I finally bought 3 more OS .46AXs-I already had one-and all my problems went away. Pour in the fuel, flip and fly. Did I mention they hand start easily?
I see a lot of trainers at my field. One lady who flies with us-she has her own equipment, engines and planes separate from her husband's-has an OS .40LA in a Kadet. I was talking to her today as she was shooting landings and she said she has never had a dead stick with the OS. That's not what I see on other trainers.
Bottom line is you pay your money and take your choice. I just bought 3 SK engines, 2 .91s and a .50, so I'm not all OS. The SKs seem to run very well, are dirt cheap and turn a big prop. But, in the final analysis, I think to sell as many engines as OS does, they have to be making a really good product. You can't sell an inferior product on reputation this long. Neither can you command the higher price unless you give the purchaser what he perceives as value for his money.
I put in bold the parts of your message I'm replying to.
The opposite has happened at our field. The one engine that needed A LOT of idle mixture adjustment was my friends OS 46fx. He got the plane with engine and radio already installed at a swap meet super cheap.
It's not the new ax, it's the older fx. There isn't anything wrong with the engine. It runs fine now and powers the plane great.
It was just that the idle mixture was so far off that for a while everyone thought it wasn't going to ever be right and there were some thoughts of trying a different engine, or at least a different carburetor. But those OS carburetors are E X P EN S I V E! as, I think, someone has already said and a new OS engine costs more than he paid for the whole rig.
Since he didn't have another engine for the plane and couldn't afford another engine, he continued to fly and adjust, and fly and adjust until we FINALLY got it to idle long enough to land without quiting.
The thing that contributed to the difficulty in getting the mixture set was the very tiny mixture screw that was down inside the throttle piece. I have a jewelers screwdriver set and one of those small screwdrivers was needed to adjust it and it was still a tight fit. I don't think anyone had ever touched the adjustment before, simply because it was so hard to get to.
He got pretty good at dead sticks. 
But that's in the past now. It runs great now and doesn't quit on him, unless he runs out of fuel.
So, the engine was, and is, good. It was just the carburetor out of adjustment.
I can't comment on any multi engine planes, because there aren't any at the field.
Most at our club ether fly a high wing trainer type plane, or they crash a lot.
NI
< Message edited by Nerevar -- 12/18/2006 2:08:02 PM >
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RE: OS engines overrated? - 
