4512-2 train converted to PF (but it slips)

[bmassaer]

Inspired by a thread on this forum, I converted the wagon of the 4512 cargo train to a PF Powered wagon.

I have to problems by now:
- These sliding doors are very unstable - almost simply "touching" them make them fall out of their rails
- The PF motor wheels slip easily. I run my trains on some inclination for which I found a formula on this forum. The 60051 passenger train runs smoothly on it, but this cargo train slips, altough it's total weight is less than the passenger train. I put the battery's just above the wheels, but still it slips. The wheels have their rubber O-rings on them. How can I prevent this? Do I need to add more weight?

Thank you! - Bart

 

 

[moustic]

Did you replaced the 9v motor of the loco by a free wheels bogie ?

 

 

 

[BrickMusher]

I usually use 2 Boat-weights on every Loco (so around 110 gr of extra weight)

You placed the battery-box only half over the motor, so I guess nearly half of the pressure will be lead throu the undriven bogie. And rechargeble batterys are sometimes surprisingly lightweight.

It also helps to place the motor on the rear end of Loco/waggon due to dynamic load distribution.

 

About the door-issue:

Your roof-construction looks somewhat weak, I think that gives to much freeplay to the upper doorrails and make the doors faling of. Try to fix the door-rails as good as possible.

On dynamic problems, a short video often helps to explain or detect the problem better than photos can do.

 

Good luck, keep us informed if you find anything ;-)

 

Regards

BrickMusher

[bmassaer]

OK, thank you. I will check for the boat weights and try to make the roof stronger. I will keep you informed!

[dr_spock]

I usually have my battery box centered right over the train motor. 

[Paperinik77pk]

I agree, battery over motor and some hardware parts like bolts or metal rings (you can hide them between two lego 4x3x1 panels) should provide you the right weight where you need it !