Would you trust one HS225MG to run both elevators on a Great Planes G-202 46 Kit?

Would you trust one to run the rudder?

TailTwister,

I am using one 225 each (NOT metal-gear) on the rudder and elevator of the GP Cap (.40 size). The plane is powered by a O.S. .70 four-stroke. I have been flying it since last May (maybe 50 or so flights) and the only problem/complaint that I have is the rudder-servo is not quite enough for a knife-edge loop (or, maybe I just don't have the skills! )

Any clue how similar or different the size of the elevators/rudder may be?

Also, check your CG, that has a huge impact on KE performance.
Thanks,

If you are not going to do any 3d rates on elevator ...I think it will work....1/2 " movement in each direction on elevator is enough movement to do any "none-3d" maneuver including snap-roll!

As you can see.... 1/2" deflection on your elevators is not going to offer much resistance the (1)225 mg is really pushing the envelope to the limits however.

NO WAY.....on the rudder though...try a minimum of 70 oz torque and no mini

Thanks, that's what I was kinda' thinking.

3D is required for anything I fly.

I'll go up past 70 ounces and no minis.

225MGs for ailerons maybe?

I run HS225's on a Top Cap, and flew the airplane very hard without any problems. I pulled them out and put them in my Diablotin Super. These were not the metal gears. Tom

I was thinking that since the GP G-202 is a "flying speed" plane that the pressure would be a factor. A fun fly by design doesn't actually fly too fast. And when it does, it doesn't usually do snaps and stuff.

I have HS545s too. Maybe 545s for the tail and 225s for the wing?

Hi

I use a single HS 225MG on the rudder in my glens cap which is 58 inch span and powered by a YS 63 does all the 3D stuff including knife edge loops. Been in for a year now with no problems, I like them so much I`m getting a digital 225MG for my freestyle model.

Picture of the cap in my gallery.

Mike.

The only thing to remember is that this is a mini servo. It may say 60 or so oz-in of torque, but shock loads are what strips servos. The gears in these are smaller than in standard servos. This may have 60 oz in of holding power, but you'll find better resistance to shock loads in the standard size servo. Do some searches here on RCU, there are many horror stories about the 225BB, and some about the MGs too. I would recommend the HS-77, it's got 10 more ounce inches of torque, is a standard size, and only weighs .3 ounces more. I know this is a sensitive subject and there WILL be people below me telling you that I'm wrong. Just do the searches, collect your own info, but you will come up with the info I've provided here. Hardcore 40 sized 3D = No mini servos, even metal geared. FYI: The 225MGs have a critical gear that is made of nylon, so in reality it's only marginally stronger than it's BB counterpart.

Reid

I was aware of the single nylon gear. I stripped out an HS615MG once on my CGM Ultimate. What the heck you say? A 130 ounce inch MG servo strip on a 60 size plane? The single nylon gear let go.

My concerns are exactly what you say. The pulling power of the 225MG is incredible for such a small servo, but the gear train itself is pretty small. MG or not, I think I'll put the HS545s in the tail positions.

Any input on HS225MGs in the wing? I usually look for about 30 degrees max available throw on the ailerons. I'm thinking this would keep enough mechanical advantage to the servo. Any input from you folks?

I use 225MG's in all my .40 size airplanes with never a single failure, with 90% of the time 3D'ing. Although I did have a 225 throttle servo go out in my giant scale, over all I think they are great servo's for .40 size airplanes (IMHO). RB