MOC: 7760 shunter taken to PF

[reinstein]

Hi all,

after some lurking on this forum, I just registered to show you a MOC that I recently finished.

The old 12V blue Diesel shunter 7760 has always been a favorite of mine. With this build, I tried to take the design to the PF era. Have a look:

The engine is powered by a PF M-motor, driving the middle axle. Wheels are by BBB, medium-sized.

More images can be found in this album.

Hope you like it!

Cheers,

reinstein.

[Carefree_Dude]

its beautiful. but why did you use an "m" motor instead of a PF train motor though? you would have had space for a driver!

[mrblue]

using a M motor allowed him to make a three axles engine, while using a train motor you'll end up with a two axles engine. this could be the answer.

I like it very much! it's a while I'm thinking about making a copy of that beautiful 12v era engine! the only thing I would change, it's the overall lenght: I would make it 2 or 4 studs shorter, but it's just me! your moc is beautiful!

have a nice train lego day

mrBlue

[Fuzzylegobricks]

Very nice! I have always wondered how

to make a motor upside down spin the wheels.

[LEGO Train 12 Volts]

Wonderful!

I've always loved this model and this enhanced version with medium black wheels is simply amazing!

Do the shunter run on the track without any sliding problems? Or do you have put o-ring on the wheels? I can't see that from these pictures.

Yout SNOT technique is awesome ...I like so much also the doors!

Edited May 21, 2011 by LEGO Train 12 Volts

[jaster]

Wonderful! You hid all the PF equipment well.

[Selander]

Nice work, reinstein.

I really like these compact locomotives with all PF incl.

I'm not fond of the connecting rods, I think it'd look better without them.

[LEGO Guy Bri]

Great PF shunter 'reinstein'. Great tri-axel design and great color. Very good work

[lightningtiger]

FANTASTIC 'reinstein' - PF'ing a classic shunter and with that motor I doubt there will be any wheel slip on the plastic track.

And 'Fuzzy' I think I can answers your question - 'reinstein' built a differential gear box.

Brick On 'reinstein' !

[Toastie]

The old 12V blue Diesel shunter 7760 has always been a favorite of mine. With this build, I tried to take the design to the PF era.

What a beauty! Very nice 12V PF transition - so smooth, TLC's long term engineers must love this!

Quick question: All the wheels are powered via the connection rod or just the middle axle?

And how does this beauty negotiate curves? Can't figure out from the photos.

Summary: Beautiful MOC. Beautiful Theme. I love it.

Regards,

Thorsten

[dr_spock]

Looks beautiful. How are the wheels driven by the M-motor?

[reinstein]

Thanks all for your kind replies!

Here are some answers to your questions:

- The engine has not had slipping problems yet, although the wheels are not equipped with O-rings. But I still have to build some more cars to give it some hard testing!

- Curves are not a problem, since the middle axle wheels are blind drivers. But I had a hard time with the couplers: The distance from the axles to the magnets is rather big so that it tended to decoupling when going through curves. I spend some time to find a solution so that the couplers can turn a bit to the sides.

- The connecting rods are functional and drive the outer axles. But it would be interesting examine the pulling strength with and without them... Hmm, that's something to do.

- And the hardest thing is indeed the length. I tried hard to make the engine as short as possible, but the PF elements and the couplers have their size...

Cheers,

reinstein