I have the attention span of a gnat, so I launch new projects at an alarming rate. Of course, few of them are ever finished.
One of my future projects is a saloon coach in 0m gauge:
Since the main focus will be on the fantastic interior of the coach, the mechanism must be strictly under the floor.
I found some inspiration for how to approach the problem of building powered trucks on the website of the excellent british modelling collective, Clag.
I have a bit more space to play with than these 4mm scale (1/76 ) modellers, so I began toying with the idea of using a somewhat larger Faulhaber precision motor with an integrated gearhead.
I purchased an 15mm X 12mm motor (Including the gear!) from an german company named Lemo Solar to test the concept . The plan is to use up to 4 traction motors just like the prototype.
The size of the motor looks just right besides the wheelset it is supposed to power:
But what about sound? For some reason I suspected that such small gearheads could be real whiners, and I did not want to invest in 4 of the little buggers just to find out that they screamed like a choir of banshees.
So I recorded the sound of the engine and compared it to the engine I used for the mechansm of my Westinghouse engine. That engine is whisper quiet and a really smooth runner.
Here are the results:
Sound recording of 1512 motor (.waw)
Sound rcording of 2224 motor (.waw)
The sound of the geared motor is not that bad, remember that the mtor was placed almost on the top of the microphone. The second recording sounds quite noisy, but in reality, that engine as mentioned above is really quiet.
This might seem a strange subject to make such a fuzz about, but I am planning to run my models “al fresco” with no artificial sound added, so I want the model motors to sound nice on their own. No sound decoder in other words.
But if these tiny babie really work in practice remains to be seen. I will get another 1512 motor, and make a working dummy. Not a lot of parts involved to make a working boggie, really. Four pulley wheels, four teflon bearings and two sideframes.
Sounds like something even I should be able to finish!