I was really hyped about that upgrade 17hours ago. But.. Raven still doesnt fly...

You are too lazy to read the comment to the bug-report. I'm too lazy to write a report to the developers.

I feel like we're not going to progress this way :)
Here we go: https://forums.factorio.com/viewtopic.php?f=28&t=47825

Also, Mr. Maroder, i did some "upgrades", like:
- Not changing speeds while flying over different terrain
- Biter immunity while flying, and
- Some custom sounds like "fuel empty" and Klonan's "jet sounds"
if you wish...

• Not changing speeds while flying over different terrain

This is one of the three shortcomings that I wanted to fix when creating this mod.

Add: terrain_friction_modifier = 0 to the raven-2

ok, one problem less.

Remained to fix the fuel and make flights over the trees :)