Ну и вот наконец то элайн сегодня высказался по поводу многочисленных (у меня в том числе) проблем с хвостом малыша
Переводить сейчас не буду ибо спать хотца
Align in Taiwan has determined that the issue that is currently affecting some 250's is attributed to the tail blade grips rubbing on the shoulder of the tail hub. Due to manufacturing tolerances, apparently there are some tail hubs that have more material in the shoulder, which is allowing the grip to rub against it during side loads when the tail is spooled up causing excessive binding. There have also been some inconsistencies with the hub thread depths and the bearings are preloaded too much to the point where they can't handle the side loads induced either.
New hubs are currently being made that address this issue, the new hubs will incl*ude a single bearing instead of two on each grip. The new bearings handle side loads better also. In addition, all kits manufactured as of this week are already going to incl*ude the new hub and bearings.
There are a couple of ways to fix this problem for those of you having issues:
---------- Fix 1 ----------
Remove your tail blades, then remove the bolts that hold the tail blade grips to the hub and replace them with the bolts that are holding your blades to the grips. In other words, replace the bolts that are holding the blade grips to the hub with 1mm longer bolts. There should be a couple of extra bolts in the spare parts bag that comes with the kit too. This will allow the bolt to bottom out against the hub without excessively preloading the bearings, it will also increase the clearance between the tip of the blade grip and the shoulder on the hub.
---------- Fix 2 ----------
Remove the tail hub / tail blade grip assembly from the helicopter. Then remove the blade grips from the hub. Use sand paper or even a dremel tool and try and remove some material from the hub shoulder. You'll need to remove enough to prevent the grips from rubbing against it. Re-assemble your tail and install back on the helicopter.
How do you know if your 250 is OK? Well, of course if you are flying it and your tail is holding then you don't have the problem, but basically when you spool up the helicopter at about 60 to 70% throttle without your main blades you should be able to move the tail push rod back and forward and the tail pitch slider should move all the way to both ends. It will require some force (about 10 oz approx is normal), but the slider should move both ways without bending any tail parts, including the tail pitch arm or the push rod itself.
Ну и вот новые детали хвостового ротора которыми впредь будут снабжаться все киты