I got my aerohawk a couple days ago, and managed to put it together despite the bad English in the instruction manual. I was able to get it off the ground my first flight. It seemed like it was flying great untill I turned the helicopter on before the controller[sm=crying.gif] resulting in the helicopter smashing into the wall.
Although i could see no noticable damage, the main shaft that spins the blads moves up and down about 1-2 cm. The whole shaftassembly from the top of the blades to large gear at the bottom, moves quite easily. If anyone has experenced this problem or knows what (if anything) is wrong or how to fix it I would greatly appreaciate it. Additionally could someone post a close up picture of the main shaft assembly.

Thanx

Check the tubing that holds your mainshaft up... lok between the swashplate and the top bearing and make sure that it hasn't slipped down. Many folks cut this tube down or replace it with a collar, but you really need SOMETHING there to keep the big gear at the bottom of the rotor mast engaged with the man motor pinion gear.

Randii

I had the same exacty problem with my heli. It worried me as well until i realized what had happened. If you look right under the swashplate like randi said you will see a rubber tube, some say it is yellow but mine is a very light transparent blue. All you have to do is push that tube back down onto the bottom bearing and your problem will be fixed. To do this you may have to disconnect the swashplate from the servos and the rotor head so that you can slide the swashplate up a little. I had to do this because i couldn't get a decent grip on the tube to pull it back down. When you push the tube back down makesure to push the main gear on the bottom of the heli all the way back up so that it has a good connection with the gear on the motor. I hope this helps.

the tube has to to be fixed and i think replaced by a collar "helihobby.com has the collar for 5.00 and that seems to be the way to go cuz not only could u lose motor functions in flight bu your frwd back functions will need to be readjusted constantly if that swash plate moves up and down.

The swash-plate should not move up and down if you remove the rubber tube. The swash-plate is suspended at a constant height from the flybar-link. the only thing that might cause the swash-plate to move slightly up and down is the binding in the ball-links that's common with these helis.

The only advantage of having the rubber tube in my opinion is the extra crash-protection. The rubber will help absorb the vertical force of the mast in an impact. I changed it with a flanged wheel-collar so that it only touches the inside edge of the ball bearing.

On my aerohawk the main shaft would always slide down even before I cut the silicone tubing to free up the swash a little. I have heard that the ruber is a little better for newbies caus it gives a little in a crash. So what I did is, after I cut it down I put some CA on top of the silicone tube and then sprayed it with accelorator. I put a few coats on to form a lip so the tube wont be pushed ove the CA since the CA dosnt really stick to the silicone tubing. Just dont let the glue run down into the bearing. There you have it. A main shaft that will no longer slide down with the added protection of the soft silicone tube.