Hi,

There's no reason not to use them in your IC plane. All Airtronics digital micro servos can be used in either electric or IC applications, in addition to gliders and other applications, as long as the application does not exceed  the torque requirements of your aicraft. The 94761 is a fast little servo that puts out 55 and 60 oz.in at 4.8 and 6.0v respectively, so they should work well in a 50 size aircraft wing. Keep in mind this is also a metal geared servo with dual ball bearings.

They are on the website, but just not categorized yet. You can find them by putting 474150 into the search box. I'll work on getting that servo categorized with the other digital servos and the specs and features updated.

Regards,
Todd