Unfortunately I don't own the 8485 in real life - but I search ebay recurrently.
I spent yesterday building the helicopter with its control base and today with sorting the pieces and "converting" them into a nice Multipart-file.
I made two renders: (not more, because my computer was -erm... fatally injured? no. just a little- ...way too slow.)
the "640-thumbs" are linked to "1280-renders"!


I said "review" in the topic description but it's (kinda) hard if you've got only a Cad-model. Well, I'll try.
#1 tilting forward / back:
You can see the gearbox with the 24-tooth-gear and the worm screw in the middle of the helicopter. The motor is located under the helicopter.
It's possible to tilt the helicopter for about +/-15 degrees.

#2 tilting sideways:
There's a "little" frame (made out of technic bricks) mounted to the gearbox. (you can see that in the last pic above)
The motor is located in the "cockpit" of the helicopter and tries to tilt this frame. It can't move sideways so the helicopter does. D'oh!
Again it's possible to tilt the helicopter for about +/-15 degrees.

#3 moving up/down:
I didn't know that this is possible! Just depress the Control Centre. FUN-FACT: it won't work if you cry at the same time...!
It's possible to lift the helicopter for about 13 bricks or 16 studs or 12,54cm.

#4 rotor and propellor:
What? A helicopter with "untwistable" rotor/propellor?!? 'nuff said.
It's possible to twist the rotor/propellor for more than +/-360 degrees.
I hope you enjoyed the two renders and now know more about the "playability"/functionality!
I have to get this set in any case and put it to my "shelf of fame"!
Maybe someone else also wants to share some photos/videos of his/hers 8485?









































