Stomper,

I had the DS 811s in my H9 CAP 232 and Aeroworks 40 size Edge 540 with the JR R700 and had no problems. I installed the DS811s on my CG Extreme 330 and they were going nuts. Couldn't find or maintain center. I have two R700s and changed them, batteries, switch and scratched my head for a while. I ended up installing some JR 537s that I had and the problem went away. I think the DS811s need a little movement resistance to work properly. Doesn't make sense but thats what I think I learned. The wind resistance might be enough but I wouldn't fly the plane the way they were acting. I do like the R700 reciever, although I don't have any experience with other air recievers. I was a nitro truck and car guy before and this 8103, DS811, R700 was my first Air radio set up. Works well for me.

Andy,
I was never impressed with my OS 50SX from the start as compared to my OS46FX it was about the same performance wise. Another 3D guy at my field has one that really runs good so I thought I might have had a dud. after OS proceedure break-in and ample run time, when you would run mine through compression by hand, it just wouldn't hold compression like his does. I took it appart for inspection and found that somehow early in its life, it must have started to sieze or something was still in the crank case. Whatever the reason, a small amount of material transfered to the cyl wall. Inspection of the ring proved that 1/3 of it never seated except for the point of the raised area in the middle of the unseated ring area. Once I get it fixed up, it may make me much happier. All reports are that the 12 X 4 APC prop are the way to go with this motor. What prop are you running?