ORIGINAL: Props4ever
Hi,
Iron Eagle mentioned a good discussion about boost tabs and trim tabs in this section of the site, well i'm looking to add either one of these types on the rudders and elevators on my Constellation model.
http://www.rcuniverse.com/forum/m_45...page_40/tm.htm
Go to bottom on this link to see posts regarding it.
My reason is same as few have mentioned in this thread already, i want to use 3 mini MG servos, 1 on each rudder on this model, now problem is that i can't find a servos in this size that will do the job w/out addition of tabs, so what do u guys suggest.
Out board rudders surface area is equivalent to LT-40 rudder and center one is less....
Why metal gear? Added weight and they don't wear as well. Good for shock loads, say as a steering servo, but I wouldn't see them as needed/wanted for a flight surface. I'd run the numbers through a servo calculator to confirm, but off the top of my head I'd say a Hitec HS65 or equivalent. Karbonite gears wear well, last a long time. They handle the torque load just fine that the servo can dish out, and they don't have a high amp draw for their power. FYI, there are some killer thin-wing servos you may want to look at as well here:
http://www.espritmodel.com/index.asp...arch=GO&Page=1
or if you don't want the high current of the digital;
http://www.servocity.com/html/hs-125mg_slim-wing.html ironically only available with metal gears.