There really is an aerodynamic reason that tail draggers handle takeoffs differently than tricycle gear airplanes.

A taildragger's prop isn't square to the airflow at the beginning of the takeoff run. A trike gear airplane's prop is square and doesn't change that angle much at all.

When the prop fan isn't square to the airflow, one side has more lift than the other side. It has to do with the Angle Of Attack each prop blade encounters. The blade that is going down on one side of the fan area sees it's normal AOA plus the extra angle that comes from the taildragger's stance. The blade that is going up on the other side sees it's normal AOA minus that same stance angle. So one side pulls the airplane forward with more power, while the other side is pulling with less.

There's also a turning torque that happens when a prop fan pitches. It's called gyroscopic precession. We won't get into that other than to say it happens on the takeoff of a taildragger when the tail comes up.

What a mess, right?

Well, with our models, we've got more problems than those. We have to install our wheels to run true. And we have to install the gear so the wheels will run true (if we have them true to the gear legs that is). And we have to install the wheels on the axles so they don't bind.

And some tailwheel designs on our models have a TON of leverage, and others have about ZERO. So we have to steer some a lot to get them to turn, and when the airspeed gets up to where the rudder is working, the rudder is CRANKED over. Or we have that weak lever tailwheel and when the rudder starts to work, it almost dead straight.

You really have to think about the steering out to the runway VERSUS the steering on takeoff for a lot of models. I've got a couple of taildraggers that take a bunch of steering movement to taxi around at my field. But after I've got the suckers lined up for takeoff, they take very little rudder/steering at the first of the roll. I go from "it won't steer worth spit" to "IT STEERS LIKE CRAZY" in a heartbeat. As soon as I push the throttle forward for takeoff. I barely move the rudder on takeoff or the sucker will crank that way A BUNCH. But I've used almost full rudder to steer it out to the takeoff point. Think about it. Are you seeing that, but aren't expecting the sudden increase in steering power?