View Full Version : Pony Motor to Main Ratio D47U

12-02-2006, 02:59 PM
Does anyone know or remember the ratio of the gearing from the pony motor to the main on a D47U? :confused: I have it somewhere but can't find it. I'm not sure I am smart enough to calculate it from the teeth on the gear train!! :)

Old Magnet
12-02-2006, 06:09 PM
Him Jim,
Pony starting engine to main engine ratio for the D4 is 10.75 to 1.

12-02-2006, 11:09 PM
Many thanks OM. I'll write it down where I can find it!! :)