Wanting to build a portable dyno

I would like to build a portable dyno. I know it can be done, I’m just not that creative to know what I need to do this. I don’t know the formulas to calculate the hp, torque, and rpm. I must have 2 of the 3 to calculate the other. For instance if I knew hp and torque I could get rpm, or if i had rpm and torque I could get hp, etc. My problem is not hooking up and reading the data, Its knowing what data I need. Does anyone have any ideas? Perhaps a gps with an accelerometer to measure g-force and velocity? Any ideas would greatly help. I want to make this project to attach to a moving atv/dirtbike and log the information in a file.

http://lmgtfy.com/?q=diy+dyno

No offense codlink, but dont you think the first place i looked was google???

Then why did you ask such a general question? You stated you are not creative so search for someone who is and has done it already. Plus, I really don’t understand why you made a new thread that is highly related, if not the same project as your other one.

You all are really up tight lol I just wanted to do something on my own to be honest, Im no engineer, I can program and thats it. Just wanted to have some fun, but heck Ill just buy one.

Buy a dyno? What fun would that be? Build one.

“lol” again