Arrrrgg. I'm setting up my electric elevator trim and noticed that when the trim is beyond the neutral point and halfway into the 'nose down' range, the threaded rod is rubbing against the elevator skin. I cut the slot longer, but it is still rubbing. A couple options:
1) Make the rod shorter to bias towards a 'nose up' trim - won't eliminate the problem, but would help
2) Modify the attachment bracket on the trim tab such that the hole for the pin would be further away from the trim tab, increasing the angle of the rod - this would probably work, but would be a bit ugly to fabricate and would decrease the trim range
3) Grind off the threads of the threaded rod where it is rubbing to at least improve the situation
4) Give up, sell the project after 4.5 years of work and move to Tahiti.
What do you think? Has anyone else had this problem?
1) Make the rod shorter to bias towards a 'nose up' trim - won't eliminate the problem, but would help
2) Modify the attachment bracket on the trim tab such that the hole for the pin would be further away from the trim tab, increasing the angle of the rod - this would probably work, but would be a bit ugly to fabricate and would decrease the trim range
3) Grind off the threads of the threaded rod where it is rubbing to at least improve the situation
4) Give up, sell the project after 4.5 years of work and move to Tahiti.
What do you think? Has anyone else had this problem?