My little RC Dyno. Power test and making-of.

This short video gives an overview of my small inertia dyno designed to optimize RC 1/10 brushless motors.
This project was started one year ago and it is made of an old bench grinder, a Renault Megane damper pulley and a Arduino Uno R1 micro controler and a some sensor and electronic stuff to make it work....
This dyno is my first electronic project as well as my first C/C++language coding attemp...
Thanks to all the ressources available on the internet I have been able to learn enough on physics, electronics, and coding to build this project in less than a year.
However most of the credit of this rc dyno goes to:
Damo Rc :
sites.google.com/site/simpled...
• Homemade RC Dyno Proto...
He is a very gifted programmer
He is also the author of the Simple dyno software as well as the original Arduino sketch that I have modified to include the LCD tachometer...
2strokestuffing
• CHEAP DIY DYNO ANYONE ...
This guy is working to create the most powerful 50cc two stroke engine in history.
As a developpement tool he has built an motorcycle inertia dyno based on Damo rc software and is using an old big electrical motor as a roller.
This give has inspired some of the technical choice made for this project.

[@gadgetdeez7069]

This is cool. But one thing i've learned about anything, you need to actually LOAD the motor to get accurate power calculations. The rotational mass of your flywheel needs to be AT LEAST 10x greater than it is, and maybe more than that. If you put a honest load on it, you not only will have more time to gather accurate measurements, but you will see torque and efficiency numbers increase. As load falls off, so does efficiency. And because you are dealing with a spinning mass (flywheel) and not an eddy brake or something similar, you're seeing a sharp fall off in your curves. This also holds true for eddy brake style chassis dynos for cars if you have the duration of the pull set far too low. Add load, add an eddy brake, something to load the motor. I promise you'll see completely different results.

[@daniel-is6zf]

Right I hope I'm right in asking you but when it comes too the rollers . Can I run two either side of the wheels if they are synchronised with a belt/chain .. and Can they/do they act as your fly wheel? Trying to work out whether to run one or if the rollers act as that.. or not . Im starting a proto'd rig.. ATM it's just rollers in a frame linked via belts which can run of to my armature... I'm aware of the formula to find my moment of inertia of angle that's not an issue.. where I'm confused isn't the coding n what not that I can work through at my own pace . However . I'm stuck on what exactly I need to run ie flywheel no fly wheel, what weight for a flywheel to run on the car without risk of damage or centrifugal force releasing the flywheel.. or ripping itself apart.. being it's a chainsaw motor I don't think I'm going to need all to much weight..
Entirely new to this type of machine or analysis system but I'm hell bent on making this happen. I'm sick of guessing if the cars running the same 😅

[@daniel-is6zf]

The belts essentially run to the armature arm and spring and when load is applied it will load onto the armature... or I'm completely off on this whole thing . And being I started on a let's see if I can make this happen additude I'm expecting to be off on a few things..b😅

[@nguyenvietfly3906]

hi can you give me the code arduino ardyno ? thank