Reply to "MTH Engine Gear Ratios"

Ted S posted:

I'm pretty sure the byte 0x08 by itself tells a lot about the effective gear ratio, taking into account the driving wheel diameter.

I have 16 engines and I've looked at the bytes at RAM 0x08 and 0x09 to try to see some pattern.

All diesels have values like 0x54 0xAB, 0x54 0x85 and 0x55 0x45. These all have about 22mm wheels.

The 4 steam engines have these values

0-8-0     0x5D 0x64    27.55mm wheel

2-8-0     0x62 0x55     32.74mm wheel

Berk      0x50 0x23     36.27mm wheel

0-6-0     0x7B 0x90     27.11mm wheel

Maybe there are some hints in these numbers.