Interesting thread , thanks for all the info.
@molly09 , I'm sure that Peter (Buckeye) has tried a few things since posting the original thread 10 years and one month ago. But nice to see people researching the old threads..Write while the plane is already stable in the air if you want to write on board without any issues. As you take off, don't write.
It is important to always ensure that the ink in your fountain pen is fully filled. This will ensure that there is no space for the ink in the reservoir to swell.
@howsitwork? not a problem as there are loads of threads going back over 10 years so its always worth searching the forum first before you ask any questions. But failing that ask away.