electron_flyer
Senior Heliman
Location: Cape Town, South Africa
| maybe this is obvious to some, but could catch some newbies out so a heads up just in case:
On assembling the tail, I found excessive play (deadzone) between the pitch arm input and the output on the blades caused by play in the tail shaft (moving back and forth in the bearings). A washer added to the shaft behind the back bearing cured the play. Dont add more washers than you need to eliminate the play else the bearings will get preloaded. This will likely cause tail wag unless corrected.
Also found that the idler pully bearing would seize up if the retaining screw was tightened fully, had to back off half a turn to get it to run freely. This was not obvious due to the shiney surface of the pully making it *seem* like it was turning when in fact it wasnt. This will cause short run times and rapid build up of black dust unless corrected. |
