Your statement on linseed oil for a start. Do you know why that is used.
yr' wrong,
Go back to the ATSB report on a previous post on this thread.
I stand by my statement that, in this day and age, corrosion prevention in tube frames has come a long way since linseed oil.
Tootle pip!!
PS: Has it ever occurred to your tiny mind that 4130 tube frames are not limited to aircraft, I built my first one before I was old enough to vote.