Why three motors?

This is typical german engineering. If one motor fails you still have instant replacement on hand.....

Hello Jea48, these motors in the TW Raven are so good, that they won't have any problem with one dead fellow (which in turn would have no friction if he should ever fail - which I can't believe would happen anyway). If one dies indeed, I am sure that this would literally went unnoticed.
It is typical german (over)-engineering.
That strange arrangement with the one side belt in tangent contact only must have a sonic benefit.
I am sure and confident, that this is a feature of the original design.

Hi Hiho, well - thanks for posting those three 3-motor-drive contenders. They all share the very same set-up - as far as geometry goes. All using a 3-side-symmetrical approach. Somehow logic and going along with the common sense of mechanics in providing a force-vector free bearing in the horizontal plane. I guess we still haven't found the true idea behind the Raven's 3-motor-drive.

Hey Downunder, it is very simple: I have finally realized how great all TW-products (past, present and future) are.
Given the fact (which many fellow A'goners here discovered before...) that I am slow and rather simple-minded, that came somewhat late to me. But now I am convinced. The 3-motor-drive/one-side-belt-touch-only was the very last drop I needed. When I realized the striking idea and empirical research behind it, I was stunned in awe.
That's what I tried to express in the past posts in this thread.
Syntax too is already desperately looking for 2 more Micro Seiki RY5500 motor drives to finally enter Nirvana. Problem is, those motors are too large to fit in the spaces between his armbases and the rack is too small too.
Anyway - neither him nor me will turn on our front-end again before adding more motors to the set-up. I will check back with my Lancia whether I can't add 1 or 2 more motors to make the drive more relaxed and to add further presence to the drive experience.