After flying the 4 star for a few years I wanted to give an update. My first one flew with an OS 26 Surpass and Tactic TSX20 servos. Its a great combo but if built to spec the nose will be very heavy with that engine. SIG suggested moving the firewall back an inch. My second 4 Star20 was built with HS81 servos and a Thunder Tiger GP25. A good snappy combo but I think I like the TSX20 servos better despite the extra weight. The bushing Thunder Tiger(or OS25FP that is also commonly available) is a good match to the airframe for the power to weight. A 15 should pull it along well perhaps a Magnum XLS15? Both the 26 Surpass and the GP25 have power to spare on this plane. I liked the gas mileage of the Surpass combo and the sound.

Did you build your second 4Star20,or buy it? I sold one at the Davenport swap meet that had a Thunder Tiger 25 and HS-81 servos and looked very similar to the one in the photo.

Thats the one I couldnt hand you the money fast enough to get ! And you see why . I gifted it to Bruce after the maiden.

What did you like better about the larger servos? I've used mini and micro servos quite a bit in plane that size or larger and so far can't really tell the difference. Not arguing, just curious; maybe I'm not noticing something I should be noticing.

Jim

I cant say for certain, completely subjective, possible a setup difference but the Tactic servos just seemed more positive.

Are you guys still flying at the Bayfield Airdrome? I would love to get together with you and see it in the air.

I fly in Iowa City at the Aerohawks field