I modified a Bachmann HO GE 70 ton switcher.
- Some black and brown wash
- Kadee couplers
- Removed footboards
- Installed prewired SMD 0402 LEDs with 5k6 resistors in the shellÂ
- Replaced Bachmann PCB with GE Tsunami 2
- Installed sugar cube speaker in the front of the shell
- Added sheets of lead in the top of the hood
It is still a noisy engine but the lead in the shell reduces the amplification of the vibrations caused by the drive.
I had a "nice" surprise with the sound. A first test run with the Tsunami and the sugar cube installed made the usual factory set loud engine noise. The bell was ok too but the horn damaged the tiny speaker within seconds. It sounds awful after the test drive and I had to replace the sugar cube and delayed the next test run until the volume of the sound had been adjusted. It is always wise to have spare parts in the drawer
![[Image: 40946486480_28edd1429c_c.jpg]](https://farm1.staticflickr.com/876/40946486480_28edd1429c_c.jpg)
![[Image: 40946486440_10662a9fd4_c.jpg]](https://farm2.staticflickr.com/1754/40946486440_10662a9fd4_c.jpg)
![[Image: 28883565878_2c9ee3fb0e_c.jpg]](https://farm1.staticflickr.com/895/28883565878_2c9ee3fb0e_c.jpg)
- Some black and brown wash
- Kadee couplers
- Removed footboards
- Installed prewired SMD 0402 LEDs with 5k6 resistors in the shellÂ
- Replaced Bachmann PCB with GE Tsunami 2
- Installed sugar cube speaker in the front of the shell
- Added sheets of lead in the top of the hood
It is still a noisy engine but the lead in the shell reduces the amplification of the vibrations caused by the drive.
I had a "nice" surprise with the sound. A first test run with the Tsunami and the sugar cube installed made the usual factory set loud engine noise. The bell was ok too but the horn damaged the tiny speaker within seconds. It sounds awful after the test drive and I had to replace the sugar cube and delayed the next test run until the volume of the sound had been adjusted. It is always wise to have spare parts in the drawer
Reinhard