D0G:

You have a valid point, no replacement for displacement, but weight and balance are just as important to a 10th scale car as the real ones. If racecar builders and drivers are worried about extra pounds, then we in RC should be worried about extra ounces - just makes sense doesn't it.

Case in point:

Is it better to have bigger engine more fuel(125cc)? Penalty is that as fuel burns off the springs react faster changing the way the will work at the end of the race

Is it better to have bigger engine less fuel(75cc)? Lots of pit stops for a 10 minute main.

Is it better to have light engine more fuel(100cc or higher)? Never have to pit, but why take the handling penalty.

Is it better to have light engine less fuel(75cc)? Just makes a ten minute main and takes onces off weight, less handling penalty.

Or is it better to level the playing field say that you must have 75cc and a .12 engine and go have fun?

I find most of the fun with my vehicle is tuning the suspension to see how it will handle best. Combination of the tires, shocks and geometry, a good radio then have fun. A good torquey engine in it, is just icing on the cake. If it doesn't handle, try new springs - shock oil - suspension mounts - camber angles all that good stuff.

Just do as you like, I would bet that you would be very surprised how well a properly tuned .12 can run - I know I was. I have a HPI MT2 with allot of stuff on it - .18 the whole works, but those .12 RCGT just kick some butt. I thought for many years that big engines are the only way to have fun and kick a**, but after seeing the Associated and Losi's run, they really go.

Gran