Originally Posted by
geeunit1014
Spool is faster because it never diffs out. With a diff when you go through a corner there will be some amount of diff action, even if the car is not visibly diffing out. With the spool everything is translated into forward traction, it always puts down what the motor is putting out. As long as you don’t overcome the lateral grip, you are going forward It’s also lighter, so it will generally accelerate faster.
I would also guess the old school front ends are a by product of spools. We know now the cars on carpet will always handle a spool, as long as the cars don’t pick up a rear tire. So we go back to front ends with no camber change and no reactive caster to keep the cars from pivoting like that.
Just to get an idea of how far back the old school front end started its life in RC cars, this is a picture of a car that was from the 70's. I ran the version before the springs were added on the kingpins. We also ran a spool and only ran on asphalt. Schumacher came out with a ball diff that eventually became a standard we still see today. That all in one brick radio was a piece of work. It's fun to rekindle those memories. -a :-)
