Yogi-
I somehow missed this post in the flow of all the info on this site, but what great engines those are. Super job.
As far as people responding to posts, many (myself included) often scan several forums every day, and read a number of posts. Unfortunately, keeping up with a large number of posts every day does not necessarily leave much time to comment on all the great builds.
Keep in mind that these posts often get referred to for years, and your engines can be the inspiration for generations to come, there is much more to it than just who is looking or posting today.
I post because I love modeling, and hobbknobing with people of a similar interest.
If I had a nickel for every post I did not get a response to, then I would be a multi-millionaire, but such is life.
I figure if even one person reads what I post, then that is one more person than yesterday.
Just post for the fun of it, and let it go.
We all enjoy the heck out of your posts, so keep at it.
Pat J