They've been naughty boys, havent they Mr. Flibble
Join Date: Feb 2007
Location: Devon, England
03.31.2012, 06:10 PM
The difference in tooth shape is something I've observed on spurs and pinions from different manufacturers- the tips are more tapered sometimes, but they should run/roll against eachother just fine if you use your fingers to test, so no worries.
The Traxxas spurs Mod1, but as somenone mentioned, they are indeed a different pressure anlge. Traxxas Mod1 gears are 14 Deg. pressure angle, while everyone else uses 20 degree pressure angle. If Both gears were metal, they would very likely wear prematurely and make some noise, but plastic to metal works fine.