Bought these as a "Just In Case" spare part, but haven't yet broken or worn out the original.
Nov 02, 2012
Hobby King sucks... ben waiting for spearparts for to many weeks.
chose another suplyer if you want your products under one month delivery time.
Oct 30, 2012
Smashed the teeth off the small sprocket(front end of the drive shaft), just like everyone said I would.
Sure would be nice to see the next batch of these of a higher quality when they finally arrive off backorder.