New Engine ? OS 50 SX
12-11-2001, 05:49 PM
#1
New Engine ? OS 50 SX
I have seen the OS .50 SX advertised on the Tower Hobbies site. However, I can't find it on the OS Engines Site. Has anyone purchased on of these engines or have any information / knowledge about it ? I am referring to the aircraft .50 SX, not the heli engine.
Any Information greatly appreciated.
Any Information greatly appreciated.
12-11-2001, 10:20 PM
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New Engine ? OS 50 SX
After you have pulled up the Tower's listing for the 50SX click on it and then click on "Tech Notes" or scroll down to them which will give you most, if not all the info that the OS website has on their engines. I see that they have neglected to include recommended prop sizes so you will need to experiment a bit but a good prop to start with might be an 11X7.
12-14-2001, 05:53 PM
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OS 50 SX
I just received one of these a couple of weeks ago and put it on a new Kyosho Cap 232 40 size. It starts easy and runs beautiful and has had an exceptional idle from the ist time I ran it. It runs extremely quiet!! I think OS has a winner with this engine and it's also a ringed engine as well. I'm running a APC 12x6 prop.
12-15-2001, 02:59 AM
#6
OS 50 SX
I appreciate the feedback. I just purchased one today. I am going to put it on a new profile Edge 540 (see www.aces1.com). I will do a complete review of engine and plane from receipt to first several flights and post on this forum under the Fun Fly directory. Won't be able to start until after Christmas because my Wife will intercept the delivery of the plane and wrap it for Christmas. 
I did weigh the engine today on my digital scale. Engine only: 14.4 OZ. 17.6 OZ including muffler. That is about .4 OZ heavier than advertised. Could be my scale is off that much.
I did weigh the engine today on my digital scale. Engine only: 14.4 OZ. 17.6 OZ including muffler. That is about .4 OZ heavier than advertised. Could be my scale is off that much.
12-18-2001, 08:11 PM
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Re: 50 SX
Tached it with the 12x6 APC at 10,200 using 10% nitro and still have not tried any other prop yet. It is one smooth and QUIET running engine.
Originally posted by DLT
Haven't tached it yet and I haven't tried any other props yet but will keep you posted when I do.
Dave
Haven't tached it yet and I haven't tried any other props yet but will keep you posted when I do.
Dave
12-21-2001, 10:09 PM
#8
Prop Speeds
Just a quick update. I have run the engine about 1 hour 15 minutes now. Got the following results on Omega 15%:
APC 10 x 6 = 14,500.
Zinger 12 x 4 wood = 12,700.
Top Flite Power Point 12 x 5 = 11,400.
APC 12.25 x 3.75 = 12,200
APC 13 x 4 W Fun Fly = 10,500.
I'll include more informatin in a review after Jan 1.
APC 10 x 6 = 14,500.
Zinger 12 x 4 wood = 12,700.
Top Flite Power Point 12 x 5 = 11,400.
APC 12.25 x 3.75 = 12,200
APC 13 x 4 W Fun Fly = 10,500.
I'll include more informatin in a review after Jan 1.
03-09-2019, 12:54 PM
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an old post, but, see my link below, the SX spins an APC 11x8 at>>> 11,000,, on only 5% Nitro, 18% oil,, that's pretty good considering my OS 61FX will turn that prop only 800 more on 20% with a small SlimLine Pitts, I should had bought the 91,, the 50 is much lighter too,,
to add,, the Heli engine uses the same liner, the liners have the same PT number,,
the Heli carb will allow to run more pitch, that's the cat's tail right there LOL
OS Max 50SX
Jim
to add,, the Heli engine uses the same liner, the liners have the same PT number,,
the Heli carb will allow to run more pitch, that's the cat's tail right there LOL
OS Max 50SX
Jim
Last edited by the Wasp; 03-09-2019 at 01:00 PM.
