flap pushrod bearing

[bestbearhawk1231]

Hello, wondering what everyone is using for the flap pushrod bearing. Is it a piece of 1/4"x.028 4130 tubing installed with oil/grease/anti-seize knowing that it will need re-lubed every annual or something like an oillite bronze? Thanks.

[marcusofcotton]

Aircraft Spruce part# 03-17300 1/4x3/16 .032" wall brass seamless tubing is what I'm thinking. $4.90/ft

Mark J

[bestbearhawk1231]

Hi Mark, I remember seeing that in the catalog. After posting, I had found some oillite bronze sleeve bearings at Mcmaster-carr PNs 9368t98, 9368t101, 9368t102. A few strokes of a file would bring the total height down to what is called out in the prints, if that would even be necessary on assembly. Price is about what a foot of brass tubing would be. My big concern with the brass tubing is how long it would last when compared to bronze and how big of a PITA it will be to service in the future.

[jaredyates]

Joe, I'd put that question to Bob also while you are on the phone with him. And let us know what he tells you!

[marcusofcotton]

Joe, your oillite bronze idea is better than mine.
Sure is great that we have this forum to share ideas!

Mark J

[N3UW]

I purchase my wing steel parts from Avipro. They used a steel tube as the bearing. I have seen the same used in similar applications in Pipers and Cessnas for parts that do not move that much. I always lubricate every annual and have never had a problem. I would also think the oillite bronze would be good ok.

[bestbearhawk1231]

Hi guys, an update. I called Bob earlier today while I was at the shop and he said that steel tubing is plenty good for the application. He said that both of his 4 places (not sure about the others) had a piece of steel tubing installed with regular grease and has never had a problem. He also stated that a harder bronze would also work well for the application. Since I am pretty sure I have the tubing laying around that is what will be going in.