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Thread: U-C-DO 46 vs 60
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Old 08-27-2003 | 06:31 PM
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stevezero
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Default U-C-DO 46 vs 60

The 60 flies great out of the box, but there are some necesarry mods you have to make to make it really perform, as well as stay together.

1. Epoxy the firewall. There are reports of firewalls coming out. Specially if you run a big honkin motor on it (saito 150 here ).

2. Strengthen the landing gear block. They are prone to coming out, even on a soft landing. Dont build it too strong, or else it will cause more damage. (Yes, there is such a thing of building one too strong)

3. Replace the GP CA hinges with either Radio South CA hinges, or any of the pinned hinges. (I've broken 2 hinges on an elevator half, and 2 on the rudder).

4. Seal both sides of the hingeline with either packing tape, clear monokote, or clear ultrakote (That's what saved my elevator half and rudder from exiting my plane when the hinges broke)

5. Upgrade to 4/40 stuff, and keep the 2/56 hardware for your 40 sized planes. The 2/56 hardware will bend under stress too easily. Dubro giant scale horns on both the servo and the surface have given me no problems.

6. Replace the tailwheel with either a sullivan .60 sized, or a dubro tailwheel. The stock design will not hold up well.

Another great mod that worked for me with minimal effort was to cut a hatch in the bottom of the fuse, and mount my rudder servo there. I ran some pull-pull wires to the rudder, and dont have to worry about linkage interference with the rudder and elevator. (not to mention it allows for 60+ degrees of throw on all surfaces.


The two only "complaints" I have about the .60 sized UCD, are that the canopy is weak (mine cracked twice in blenders/knifeedge spin combos), and the tail placement. The UCD 60 has alot of roll coupling, due to the elevator being too high on the fuse. They corrected that in the 46 size.

I guess what it boils down to is what equipment do you have already on hand. If you have a 46 engine and standard or mini servos, then go with the 40 sized UCD. If you already have a 90 sized engine and good BB servos, then go with the 60 size. Either way, youre going to end up with a fun plane.

One more thing about the UCD 60. The wing is one piece and is very large. It will not fit straight in most shortbed pickups. You have to angle it in. If you have a small car, then the 46 might be the way to go.

Good Luck,
Steve