Whats wrong with high torgue servos? they are the same size as a standard servo, and on an 80" wingspan plane, you will need them. I am not talkin about a big huge servo thats the size of a brick, its a standard high torque. As for the engine, the Moki 2.10 seems to be about the perfect engine

the moki 1.80 is a greart engine for this plane 5 oz lighter than the 2.10.

i used hs 225mg's all the way threw the plane and a hs 81 on the throttle.

cause i don't know what they put in them high torque srevo's but it must be lead. but they get up around the 2 oz range 2x6=12 then add a throttle servo and a 2 more oz and you have got a whole pound of radio gear. all i'am really trying to say is don't over do it or you will end up with a flying brick
just my .02 cents worth
Chad

Oh, I didn't know they weighed that much. I also forgot, but as you said, its a slow flying plane. Im sure the servos you mentioned would be perfect.

52 oz of torque. Are the enough? They sure are alot cheaper than the FMA P5905MBB I was looking at. Also, they don't have metal gears. I would hope they wouldn't strip. Jordan

you need to buy the hs 225mg the mg is for metal gear. and yes they are enough torqge. 67 inch ounces on 6.0 volts
Chad

A high torque servo ways slightly more than a standard size servo. The servos may way a pound together, but a group of standard size servos ways 3/4 of a pound or more. I use hi torque servos in any plane that i 3d, even my 40 size funfly, and i garuntee it is not a brick. Also, 63 oz of torque would fly the airplane, but if you set up the control surfaces for full 3d (read 60 degrees of throw), you will get a lot of blow back. On an 80 inch plane you should use at least 100 oz servos on the wings, 60 to 70 per each elevator, and 2 60 to 70 on the rudder or a decent 130 oz servo. also the moki 2.10 is good for the plane. The wing is so large you will be hard pressed to notice the extra 5 oz. The wing is bigger than most 33%'s. Better to have a lot of motor in reserve for when you make mistakes.