Rudder shaft and mushroom bearings

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rc12ls
Posts: 11
Joined: Fri Oct 09, 2015 10:57 am
Location: beaumont,ca.

Rudder shaft and mushroom bearings

Postby rc12ls » Tue Aug 09, 2016 11:11 am

First, I'm grateful for this website and appreciate everyone holding the fort.
I purchased a 79' C26 and now learning her through. Two weeks ago I discovered a corroded rudder shaft at the rudder pivot plate and ,upon removing the shaft, I discovered dire mushroom bearings. Also, when I cut the rudder shaft from the plates, I found a second tube 20"long x 1-1/4x" x .120wall inside the outer tube which is 41" long x 1-1/2" x .125wall.
I have 2 questions:
1st) I already made mushroom bearings from Delrin. Are there any issues using this type plastic?- I guess I should have asked first. I think Delrin is a Nylon/Acrylic blend. I'm wondering if I should have used PTFE instead. Any comments ?
2nd) is the second tube I found factory or did , possibly, the previous owner knew of the corrosion and dropped in ,thru the top of outer tube, a second tube in an effort to reinforce the weakened corroded area ? Seems like the 1-1/2 o.d. x .125 outer tube would be stong enough alone (without corrosion of course)

Sorry , I tried adding pics but unable.. Thx, Eddie..
Last edited by rc12ls on Wed Aug 10, 2016 11:28 am, edited 1 time in total.

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astrorad
Posts: 727
Joined: Fri Feb 19, 2010 8:09 pm
Location: s.e Wisconsin

Postby astrorad » Tue Aug 09, 2016 5:28 pm

I made my rudder bearings out of delrin...this is my first season in the water...so far so good.
Bill

rc12ls
Posts: 11
Joined: Fri Oct 09, 2015 10:57 am
Location: beaumont,ca.

Thx for help.

Postby rc12ls » Tue Aug 09, 2016 8:37 pm

That's very reassuring. I could not imagine any problems but I thought I'd ask..... How about the rudder tube , did you notice an extra tube down in the originalt.tube ?


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