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Originally Posted by Serum
I personally don't see the use of a dyno to proof how fast your ride CAN be..
A dyno doesn't give an insight in how hot your setup runs, changing the gearing (load) etc.
I personally don't need a dyno or the information a dyno puts out.
One thing that i am curious about; what makes a 1:1 dyno vary a 100hp? is it the motor that benefits from the cold air?
Please use this forum to share information, not to brag with knowledge or attitude.
Why dyno's are used on 1:1 vehicles? to show you if you are heading the right way with tuning an engine.. Or to give you information you can brag about on birthday parties..
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That's a question that almost requires a llengthy answer.
However in the interest of time:
Air density has a HUGE effect on power production in an internal combustion engine.
Cold dry air allows for more fuel and for greater "packing" of the cylinders, thus more power production. In a sense an engine is an "air pump". An oversimplification but still true.
The more power an engine makes the more of a gain or loss can be seen when atmospheric conditions change.
Dyano's can be useful in many, many, ways. For 1:1 you can load the motor down (Dynojet 248x, Mustang Dyno, etc.) and seee how the motor/car performs under load. The tests can be run steady state or dynamically.
Dyno tests for RC motors can be run (if set up properly) to determine the heat buildup in the motor & esc.
The tests vcould determine the "power curve" of a motor, the total output of the motor (loaded & unloaded) among other things which would tell you that your Lehner 1950/7 makes 11% more power with 2% greater effenciency and 20 degrees lees ESC heat than a Feigao 7XL for example. What you choose to do with the infor after that is up to you.
It might also be noticed that one motor has a better "midrange" power and/or efficience than another motor making it a better choice for certain racing apps.
just food for thought.