Hi all, my name is Matt I'm from Australia and I'm pretty new to RC stuff...

I recently purchased a Thunder Tiger Phoenix XB brushless, running 2 cell 5000mah Lipos.

I've read on a few threads here about people upgrading the gears to get a better top speed. In particular these:

http://www3.towerhobbies.com/cgi-bin...?&I=LXJG45&P=7

http://www3.towerhobbies.com/cgi-bin...?&I=LXJG44&P=7

Now please correct me if I'm wrong:

a) There are 2 gears, the pinion and spur?
b) The lower the teeth the faster but slower acceleration?

* In regards to the ball diff, should it be loose or tight? Should it be right where it starts to feel tight or more loose if that makes sense?

Lastly if anyone could recommend some aftermarket wheels and tyres that would be great, also is it worth changing the front for wider tyres?

Cheers for your help,

Matt