Buy Seagull Ultimate Bi-Plane 90 ARF RC AirplaneSeagull Ultimate Bi-Plane 90 ARF RC Airplane Product Description:
Product Description
Looking to put a great-looking biplane through some heavy 3D paces?
Customer Reviews
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3 of 3 people found the following review helpful.
Great quality, looks great and flies well
By Thomas OBrien
The good:*High, high quality all around.*The Ultra-Cote finish was perfect, with no goofs or bagging anywhere; and it's much prettier in person than it is in the pictures.*There are all sorts of thoughtful touches that ensure a fast, accurate build. E.g. cut -outs for either standard or HD switch jacks, servo trays are pre-cut and perfectly sized for most standard servos, all screw and bolt holes are pre-drilled and perfectly located. You almost can't make a mistake building this plane.*Virtually everything is screwed or bolted together. The only glued-on (or rather epoxied -on) parts were the vertical and horizontal stabilizers.*I like the way they beefed up the vertical stab with supporting rods.*This was by far the best, easiest build I've ever experienced.The bad:*Instructions were mediocre at best.*Of course, the included spinner was junk. That's usually the case with any ARF.*I added two more CA hinges to each aileron (the original three just didn't seem like enough).*I used heavier control rods for the aileron to aileron linkage.*The straight-ahead engine mount is a very bad idea. You need at least 2 degrees of right thrust if you don't want the model veering left on the verticals (no down thrust is required, however). Why didn't they build this in at the factory??*Keep the CG forward. The book recommends 12.5-15 cm from the top wing LE. I recommend 12.5 cm max. Even at that, it feels tail heavy.*Keep the control throws to a minimum. Even the low rates shown in the book are too wild for my tastes.*The plane builds heavy - 10.5 pounds for mine. IMHO that's too heavy for the wing area. Look for ways to cut weight; E.g. o Lose the wheel pants (saves three oz right off the bat). o Go for a lighter weight tail wheel assembly (saves another ounce). o Consider losing the pilot (saves up to two more ounces). o Use a light-weight throttle servo (saves another ounce). o Consider a carbon fiber main gear and wing tubes (another six ounces potentially, between the two). o Find a few other little things and total weight savings can be as much as a pound. You'll like the difference that makes in the air.*Go for a big engine. I used the new O.S. 155 4-cycle with a 16x10 prop.Other comments:*It wants to roll out of knife edge flight; you gotta hold aileron. This is probably its most annoying habit. But it still does a decent four-point roll.*It has a slight tendency to want to pull up out of vertical dives.*The elevator is touchy - esp. when inverted (a sign of a tail-heavy model).*But on the other hand, you can do slow, graceful rolls with virtually no elevator input.*It doesn't hold its heading through loops and Cuban eights as well as I'd like; but I guess that's just the nature of biplanes.This is definitely NOT a beginner's plane, but it flies well, and even gracefully, with conservative throws. And when all is said and done, this is a beautiful, beautiful airplane. It'll always be a big hit at any field.
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