Corroded main pins?

On Tuesday, June 9, 2020 at 7:21:46 AM UTC-6, Scott Williams wrote:
On Monday, June 8, 2020 at 7:16:08 PM UTC-5, Bob Herman,

While I have never seen any SZD glider up close,
Several of the gliders I have owned, (Phoebus, STD Cirrus, SHK, Mosquito)
Have what appears to be a sleeve and a roll pin securing such pins. Sleeve being the Glassed In part, roll pin securing the actual pins in the sleeve.
Worth a close look.
Scott

I've looked at them closely and they don't have a roll pin. They are drilled through the center, about a 5mm hole and threaded. I'm hoping this is for the sake of extracting the pins and replacing them.

If it is the pins at the pointy end of the wing spars, the answer is that
they cannot be replaced without serious work. The pins are welded onto a
steel fixture that is glassed into the spar stub. Roughly said (and by
heart), it is wedged in between the upper and lower longerons, with some
filler blocks. The stub is then wrapped with several layers of glassfibre
cloth. Good news is that replacement is not only feasible by a competent
repair shop, but a repair procedure is available through SZD, as this is a
standard replacement with the similar Jantar Standard 2's at 3,000 hours
life. Like most other companies in Poland SZD's company hours and
capability are much reduced through Covid-19 restrictions at the moment.

On Wednesday, 10 June 2020 17:30:06 UTC+10, Eric Munk wrote:
If it is the pins at the pointy end of the wing spars, the answer is that
they cannot be replaced without serious work. The pins are welded onto a
steel fixture that is glassed into the spar stub. Roughly said (and by
heart), it is wedged in between the upper and lower longerons, with some
filler blocks. The stub is then wrapped with several layers of glassfibre
cloth. Good news is that replacement is not only feasible by a competent
repair shop, but a repair procedure is available through SZD, as this is a
standard replacement with the similar Jantar Standard 2's at 3,000 hours
life. Like most other companies in Poland SZD's company hours and
capability are much reduced through Covid-19 restrictions at the moment.

+1 to Eric's response here. The Jantar Std 2 pins are replaced with Std 3 pins, which are good for a 6000hrs (replacement is not done on Std3s). I would not be using pins from a totalled ship unless you put them through some serious NDT procedures to ensure they're safe. They cop a lot of force through them in any situation where the wing tip stops and the rest of the aircraft keeps moving.