Do you want to be informed on new Posts on this Thread? (members only)

S&S Swan Maintenance - rudder bearing
08 February 2007 - 04:04
#1
Post Reply
cbrown
Join Date: 04 February 2007
Posts: 5

rudder bearing

Looking for direction

The bottom bearing is done. It looks like the weight of the rudder rest down at this point.  I was thinking split teflon? Any help would be greatfull.

Swan 47 #31 Sassafras, in ontario canada,

Thanks Colin

Colin.brown@ebridgesoft.com
08 February 2007 - 22:27
#2
Post Reply
matteosalamon
Join Date: 29 January 2007
Posts: 1145

Hi Colin, better DELRIN than teflon, as teflon's volume increase when in the salt water. Matteo
09 February 2007 - 17:54
#3
Post Reply
danielefua
Join Date: 30 January 2007
Posts: 467

Matteo,
this is a very important thing I did not know and never considered. Do you have any reference? For example about the amount of expansion.

Daniel

09 February 2007 - 20:32
#4
Post Reply
matteosalamon
Join Date: 29 January 2007
Posts: 1145

I am not sure, but think Teflon can get a swelling of up to 10%, while Delrin (Originally Nautor used  Celcon, which is a type of Delrin) should not get more than 2%. Consider that when replacing rudder bearing (I did not the first time...so I had to get the job re-done two years later!) Matteo
20 February 2007 - 16:37
#5
Post Reply
hnakajima
Join Date: 20 February 2007
Posts: 119

I recently completed the overhaul of my Swan 43 rudder and used a fiber-reinforced plastic material that is machinable to custom size.  I ordered this bearing from GGB Bearing http://www.garlockbearings.com. 

I used their GAR MAX series and it is working well.  It has been dimensionally stable and I was able to machine the outside diameter for a press fit into the cast bronze shoe supporting the bottom of the rudder post.

I will be posting this on the Swan 43 maintenance web soon.

Regards,

Hiro
  • Threads : 1804
  • Posts : 10761
  • Members: 862
  • Online Members: 0