As you may know from other posts, I really wanted to run more Italian stock on my Marklin lay-out. So I had to proceed with some modification of other brands, mostly DC. Here are a few results.
Roco 43501 - E626
I love this loco and had to have it. This is an older model I got from E-bay. The middle bogie of this Bo'Bo'Bo' locomotive is driven and the two outer ones are idle. I had to take it apart and "mill
my way through to install the pick-up shoe. The removal of material was significant and may weaken the area (it's all plastic). I also had to "superglue" all together since the several opening and closing actions (I was trying it out and taking it apart again because it was not working) "relaxed" the snapping action to close the bogie. This is how it looks from underneath.

As I mentioned, this is an old design. The motor is still a five pole but has very old lights etc. My next project is replace all the lights but I have to build my own PCB. Here is a look inside.

You may notice as on the right I am experimenting with the plastic support for the lights. This is not still good enough and I have decided to design my own PCB with the contacts for two light bulbs (one lights the "white" and one lights the "red" lights).
Locomotive runs now nicely, it is fitted with a Lenz decoder (I had a few of them).
Roco 43453 - D345
This Diesel engine has both bogies driven. Since I did not want to eliminate that, I decided to put the pick-up shoe in the first car following the loco. Now the two are connected by a visible red wire but I plan on using current counducting coupling and eliminate this wire. Re-wiring was required (the wheels to common ground and the pick-up now connected to one wheel input). Loco had a NEM 652 socket
but very little space inside for the decoder. I went on milling an area for it only to discover that the instructions indicate that you can put the decoder in one of the two driving compartments (by eliminating the interior plastic detail). I think I have a better solution and if you use a Loksound decoder it should be even smaller and require less millingg. This loco is without the additional detail (still in the box). The loco runs very well at all speed ranges, motor is very quiet and decoder works well.
Roco 63632 - E636
This articulated lodo is one of my favourites. The two outer bogies are driven and the middle is idle so I located my pick up shoe there. No major modifications required, only a small screw to fix the shoe.

Also here I had to re-wire the connection (to make it easy, I connected the pick-up shoe with the catenary pick-up and selected that mode of operation). Loco has a NEM 652 connection so I had only to plug-in the decoder. There is space inside the locomotive for it. The loco does not yet have the additional details installed. I really like how this loco drives, it has good power and very silent operation. It is nice to see it around curves with the articulated design.
Roco 69890 - E444
This is actually and AC design directly from Roco and comes already equipped with decoder.
Vitrains 2002 - E464
I got this locomotive from Eurolokshop (
http://www.tee-usa.com/). Also here, the process of adding a pick-up shoe was not too difficult. Both bogies are driven but there is enough space inside to allow for a small screw (I shortened one to only 2-3 mm). I then re-wired the power and installed a loksound decoder on the NEM 652 socket. This is how it looks.

Locomotive runs very well, has some very bright lights and a silent five pole motor.
Roco 63949 - D350
This is one of the "hobby" locos (Roco calls it Playtime) but was ok to do some experimenting. Actually, it does not run too well, the pick-up shoe is maybe to big and gets stuck on crossings etc. I will have to work a bit more but, due to the limited quality and "cheap" design, is not one of my priorities. Plus, I have a Marklin DB 216 that has the same design.
Next projects..I may want another (newer) E 626 (I am scouting the Italian and German E-bay sites) and maybe a E 636 in the two-tone maroon color (the castano-isabella). I also have on order the Roco 63854 in AC digital.. here is a pic

After that.. I should be OK with my italian stock.
Ciao
Mario