RE: Model Tech Profile Sukhoi
Started building mine last month and ran into a few issues. Experience with other arf profiles has taught that lite-ply engine bearers tend to be soft under the pinch of mounting bolts. Not that they fail, but the wood gets pretty deformed. Washers on the tank side of the fuse tend to suck into the wood pretty bad. Was also surprised at the open fuse interior exposed around the circular opening where the elevator joiner goes through the aft fuse. On a nitro plane this allows oil to get at untreated wood. No big deal on the left side of the plane, but the engine exhaust puts back a steady fog of oil smoke on the right that's likely to find its way into this opening.
Attach point for the main LG is surprisingly small with major size bays on either side--looks weak. Read a review on Hobby People's site where another modeler complained of this and beefed it up with 1/32" plywood. Haven't done so on mine cause I don't want to spoil the good looks. This is a relatively new model, so I don't know if anyone has much long-term use to determine how the fuse holds up to impromptu landings.
Have beefed up the engine bearers, closed in exposed fuse interior at the tail with 1/4" balsa stick and fuel proofed exposed wood. Will live with the main LG for now.
What's up with the noodle tail gear? Dropped my bare assembled airframe from no more than 18" high and the rudder hit the carpet. How has it been performing in the field? I'm tempted to replace it with something more substantial, but is this necessary?