MOC: DSB My 1100 - 6wide Power Functions locomotive.

[Selander]

Swedish company NOHAB built this locomotive in the 1950-1960:s for DSB (Danish national railways).

Here presented as a 6-wide and approximately 32 studs long, power functions version with 3-axle boogies, like in the original NOHAB design. Thanks to using PF-elements and a brick-built powertrain, it has been possible to make a locomotive with a design and functionality much more similar to the original, compared to using the 2-axle 9Volt or PF-train motor.

Cab has the characteristic round nose, which is pretty awkward to copy in lego, and also features working PF-LED lights (one end only). A big part of the cab structure is SNOT:ed, and hand rails are hold in place by tile clips, to sit as near the body as possible.

I built two 3-axle boogies (trucks) in a "lego-train-motor-design", basically using the same concept as in my previously presented compact shunter DB 365 V60. Changed o-rings makes it manage points and curves without any problems.

In each boogie, two axles are powered by a vertical Medium PF-motor placed right over the mid axle.

Gearing is 1:1, so each boogie has seven 12-tooth gears.

Lower part of black mid section consists of SNOT:ed black tiles, which are supposed to replicate the "corrugated plate" design of prototype, and makes it easy to fit four round "windows". Behind those sides you'll find, apart from the two PF-motors, a non-rechargable battery box and IR receiver.

Loco has no modified parts except for changed o-rings, and decals.

Any comments are welcome.

[DLuders]

Nice design! By using two Power Functions M Motors, your DSB MY 1100 locomotive has ~3 times more "stalled torque" than the Lego 9V PF Train Motors would provide, according to Philo's "LEGO® 9V Technic Motors compared characteristics" webpage. The design of your DSB 1100 is very realistic:

[Shupp]

That's very impressive in a 6 wide package, and you still managed to get a lot of detail in!

[eliminator]

Great work!! That loco is certainly unique looking

[lightningtiger]

What a beautiful engine 'Selander', I the front and rear red section - AWESOME styling.

Brick On 'Selander' !

[LEGO Train 12 Volts]

Very nice locomotive!

Great design, clever technique and perfect shape!

The lights are a fantastic touch!

[dtomsen]

Nice original realization of the DSB MY 1100-series, love the 3-axle boogies (must...not...copy...those) even without decorative sides

[L@go]

I really like this - but that's no surprise as it's coming from you. I thought it looked familiar - that's probably because it has a very close relative in the NSB Di 3 in Norway.

[Dr Rod]

Yeah this is very nice. Compact but I imagine it has heaps of torque. Well done!!

[Hechristensen]

Fantastic!!

Any chance you could make an instruction for that?

[roamingstop]

Very nice loco - but somehow the photos make we want to put a face onto it - a little like those of Thomas The Tank Engine... Two Faced Rodney for example? Push-Me-Pull-You?

The build looks great; although it is not clear how well the two M motors can work in parallel to pull a hefty load. Any hints?

[Man with a hat]

Really nice. A great job you did on the front of the locmotive. That works out perfectly.

Now I would like to see what it is intended to pull...

[Selander]

Thanks everyone for your kind words.

About pulling power, so far I only made a simple test the other day, by hooking up seven My-Own-Train wagons,

and that was a piece of cake to handle for the loco (but I don't think that load was particulary severe).

I guess I should try with more and heavier rolling stock to find out more....

In theory it should have a good pulling power, having two Medium motors, a low 1:1 gearing and "8-wheel-drive" with grippy o-rings.

[Asper]

That's a beautiful locomotive! And it's only 6wide and is driven by power fcuntions!

So far I failed to build a similar engine driven by M motors. But your build is motivating to try it again. (My attempts were either too slow or destructed themselves after 5 minute...)

[peterab]

In theory it should have a good pulling power, having two Medium motors, a low 1:1 gearing and "8-wheel-drive" with grippy o-rings.

My BR103 was initially powered with 2 M motors, with 1:1 gearing. They had plenty of power but were very slow. I pulled 5 50 stud long, 7 wide passenger wagons with no problems. I was using AAA rechargeable batteries so only had a maximum of 7.2 V available.

[Selander]

My BR103 was initially powered with 2 M motors, with 1:1 gearing. They had plenty of power but were very slow. I pulled 5 50 stud long, 7 wide passenger wagons with no problems. I was using AAA rechargeable batteries so only had a maximum of 7.2 V available.

Did you keep the 1:1 gearing when changing to XL-motors?

Or......?

[peterab]

Did you keep the 1:1 gearing when changing to XL-motors?

Or......?

No, I lengthened the wheels so I could include a larger gear above the bogie, it made a small difference but I plan also to use 8 x 1.2V rechargable batteries to get back up to 9V max. If that doesn't give me enough speed I might have to remove one motor to give me enough room for some higher gearing.