Has anybody used these ?
 

As the title says http://www2.towerhobbies.com/cgi-bin...?&I=LXMGY5&P=7

Yeah, i heard a user here tried them. They are not very hard, that was his verdict; and that kept me from trying them as well.

But you can always get some and report back with an rchippie test of them.. :p

LOL:005:

No, seriously, they are not hardened as hardened is supposed to be. (from what i've heard)

i wonder it they have 4mm ones also

is that heli stuff( as in helicopter)?

Rene i know what you meant. I was laughing about the RCHIPPIE test comment:005: .

Yep.

The guy who used them (forgot who) tried them on a steel spur. For most of us, the hardness of these pinions isn't an issue because of our plastic spur gears.