I would guess it would depend on the actual specs you are looking for?
MOD Motors were hand wound, and could pretty much be anything from 5 or 6 Turn motors to 17-18 turn, with all sorts of strand configuration. The endbells were adjustable to change timing. Mod motors used bearings on the armature shaft.
SPEC 19t motors were 19 turn singles. The ones used for pretty much everything but Oval Racing were a fixed 24 degree locked timing motor. (Oval went to an adjustable timing like a normal MOD motor.) 19t motors used bearings on the armature shaft.
STOCK Brushed motors were 27 turn single winds, and for the most part limited to a FIXED 24 degrees of timing locked into the endbell. Stock Motors used oil lite bushings (No bearing motors)
The motors are 540 type motors, 3 pole windings and could have STAND UP or LAY DOWN brushes. (A few brands went to a round brush in the last few years brushed was run)
You can probably find all the motor size specs, etc. on the ROAR website in their rules section.
R/C Racing since 1985 ~ Santa Maria, CA (Central Coast)
2001-2012 - South-West Tour R/C Oval Series - R.I.P.
...will the SWT be revived? Time will tell, but we ARE returning to the VELODROME in 2016