I just gave my new Spectrum Shay a trial & a new Heisler as well. I can't believe how they will not move unles you have about 30 % power on & then they take off like a dragster -- I relly expected better "crawl" from them.
I have 4 MDC Shays I reworked motors & gearing on , including adapting Grandt line ring & pinion gears to the wheels, that will crawl slow enough to take 5 -6 minutes to go 3 feet.
I have 4 MDC Shays I reworked motors & gearing on , including adapting Grandt line ring & pinion gears to the wheels, that will crawl slow enough to take 5 -6 minutes to go 3 feet.