@Vernon Barry posted:Just realized something doesn't jive from the parts listing, that 20-3515-1 flywheel is actually as measured 27mm Diameter and 13mm Thick.
More like this one
or
not the one in the parts listing. https://www.mthpartsandsales.c...lists/297?type=lists
Not these, not for this PS3 model.
Edit, to be clear, I'm not saying my 27mm diameter vs 26.85mm is the "mistake", I'm saying that the PS3 Pittman bracket is used with a 26.8(5)mm Diameter flywheel and the parts listings- there may be more- might need to reflect that. A 30mm flywheel is too large for that bracket and will interfere.
I've noticed Premier PS3 steam standardized on a 27mm diameter flywheel and all use the same tach reader bracket. Most prior PS2 Premier steam used 30-33mm flywheels, the same tach reader bracket, and the 30mm versions got a tach reader with a larger spacing than the 33mm version. You can't use a 30mm flywheel on a motor with a PS3 tach bracket, the flywheel hits the bracket. I think the 27mm flywheel and bracket assembly was standardized for PS3 steam because there is no spacer on a PS3 tach reader, so everything needed to be interchangeable between all locomotives.
I discovered this a couple years ago as I Frankenstein a lot of parts together to build locomotives.
