Garrattfan's Modelrailroading Pages
The Tenshodo SPUD drive that was supplied with the kit has, as a fellow modeller put it, basically two speeds: stopped or sonic boom. There are several ways to improve this.
One way to improve the SPUD is to put another motor in it. Its should fit in size, it should have two motor axles and it should have good slow running capabilities. Mashima provides models that fit that bill.
Discarding the SPUD altogether is another option. An good alternative could be the Black Beetle. It is a far more expensive solution but it comes with the Mashima motor and it also offers the option of a 1:30 gearing, improving the slow riding capabilities even further
I will see if a Black Beetle may fit in the limited space I have.
Building a new drive
This wil me a lot more work but it guarantees be that the drive will fit, I can have the motor and gearing of my choice and can give it springed suspension on one axle, improving its road behaviour and current collecting capabilities. By doing this I would also collect valuable experience as this would my first scratch built drive mechanism.
I am going to look into any of these three options
(date written: Jan 3, 2014)
Installing a decoder is a fourth option that can be combined with any of the three mentioned before. Another friend offered to help me installing the decoder and he advised me the Kuehn N45.
This decoder measures 8.9 x 11.7 x 2.3 mm only. I want to conceal it in the coal buker so I made a mock up to see if it would in. To make sure that it would this mock was made slightly oversize: 10.4 x 13.4 x 3.2 mm. It turned that I could fit it in four ways
Sawing out the hole for the decoder is not overly difficult. Drill fouir holes in a rectangle. No reason to be overly precise but the X-Y-crosstable will help you to setup a nice square.
|With a jeweler's saw take the main part out.|
|And file until square and a tad larger than the decoder. This hole is 12.2 x 10.2 mm, the decoder is 8.9 x 11.7 so I should be able to get it through.|