I figured out some alternatives:
1) SNOT:ed panels 1x2x3 between technic bricks 1x1.
2) Train doors 1x4x5.
3) SNOT:ed tiles 1x8 placed vertically.
I continued with the first alternative, and from the new Cars set 9486 I found panels 1x2x3 in Green which inspired to make a sleak locomotive in typical German or Swiss style. To show off the two XL-motors I put trans-black panels 1x2x3 on top.
By building a 6 x 34studs long locomotive, I squeezed in 2 XL-motors, a PF battery box, on e IR receiver, and a pair of LED lights in each end. In each pair, one Led goes to the upper round single light and the second enlightens a green light prism (from 7897). Front end has clear /yellow lights, and rear has red lights.
Bogies are 3axle designs, with a floating mid-axle (Inspiration comes from Railbricks issue 6 by Scott Wardlaw)which allows you to use standard PF train wheels without any o-ring modification. Each bogie is powered by a vertical XL motor to a 20T gear. Still the loco is quite slow…. Feel free to comment.
Edited by Selander, 23 February 2012 - 12:31 PM.