I got into nitro RC cars when I couldn't afford to race my "real" car anymore, and needed at least one politicaly correct hobby...
Right now, I've got 3 RC cars...
Associated RC10GT with a ported Hyper .21 on it, Ofna Monster Pirate w/ Hyper .21, and an HPI RS4 car w/OS .12...
They all run on 20% nitro...
The RC10 actually does wheelies at almost any speed when I've got sticky tires on the back...
My Monster Pirate with it's 2-speed trans, will smoke any Tmaxx right out of the box...
(The Hyper .21 makes 2.1 horsepower @ 38,000 RPM's)
The HPI car has a hot little 1 horsepower OS .12 in it, and also has a 2-speed trans...
Check 'em out...
[url]community.webtv.net/YULLOSE/ExtremeRC10[/url]
BTW...
60-70 MPH from a heavy all metal .21 Tmaxx is "unrealistic"...
40-50 MPH is more like it...
My Monster Pirate goes 37+ MPH right out of the box with only a 1-speed trans...
I haven't clocked it with the 2-speed yet, but it looks to be going around 45-50 MPH when it tops out in high gear...