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Josh
10-22-2006, 07:17 PM
whats the difference between a "sealed" lift strut and a "NON-sealed" lift strut? how can I tell the difference VISUALLY? please im new to cubs so bear with me :angel :angel:
Longwinglover
10-22-2006, 07:33 PM
Josh,

The UNsealed struts were "open" at the top end where the bolt that attaches the strut to the wing goes through. A SEALED strut has a bushing welded into this hole thus sealing the strut. (Water tended to migrate into this hole over time - especially if the plane spent time outside - and the accumulated water would rust the strut from the inside out.)

I generally believe that all struts sold today are SEALED. There are at leats 3 sources of struts - Airframes, WagAero and Univair. The Univair sealed struts can be identified by a "U" inside a circle stamped on the flat at the top of the strut. I do not know about Airframes or Wag.

John Scott
Steve Pierce
10-22-2006, 07:36 PM
Most all of the sealed struts I have seen have a larger fork also. The original forks were 3/8". The fitting that the fork is screwed into is also sealed. Not supposed to be any door catches or strut fairings screwed into sealed struts either.
R. JOHNSON
10-22-2006, 08:33 PM
Wag Aero's sealed struts for the J-3 have the smaller fork. I was looking in a 1973 Trade a Plane yesterday and seen a Univair ad and a front srtut for a PA-18 was $54.00.
Longwinglover
10-22-2006, 09:22 PM
I was looking in a 1973 Trade a Plane yesterday and seen a Univair ad and a front srtut for a PA-18 was $54.00.

Yea, but that was not for a sealed strut! :D

John Scott
Josh
10-24-2006, 12:42 PM
My struts have a stamp at the top that has "EU" and "CX" any one know what that means? The log books say the AD99-01-05 has been complied with from last annual, trying to figure if they are sealed or not, I dont see any holes or gaps at either end of the struts, any one know? ....I guess Ill wait till my Mech. gets back.
Taledrger
10-24-2006, 01:15 PM
If the logbooks say the AD was complied with, the chances are they are not sealed. If they were it would say "Not Applicable" or N/A with some notation referencing the sealed struts.
I think.......