When A Motor Feels Like It's Full Of Glue...
When a motor has been overheated or died due to too much timing etc, what actually is it that makes turning the rotor by hand feel like you trying to stir syrup?
When the motors are apart I can easily spin up the rotor in the bearings as they are free, but once everything is assembled and the rotor is in the centre of the stator it won't move freely.
On at least one of my motors that feels like that I can still power it up, but obviously it stops dead almost instantly once I throttle back.
Xray T4'16, T4'14 (Wet Car)
Xray X12 2016
wlrc.co.uk (West London Racing Centre)