Rpm to km hr

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March 02, , Pages: 1 Go Down. I just got back from my first open-road trip with my new i30 with 1. I have noticed that it turns on high rpm Is this normal???

Rpm to km hr

All rights reserved. Use of this site indicates your consent to the Terms of Use. Remember Me? By logging into your account, you agree to our Terms of Use and Privacy Policy , and to the use of cookies as described therein. Mark Forums Read. Vendor Directory. Whether it's got an acronym or not, here's where you'll find discussions on all sorts of tools, toys and gadgets. Thread Tools. Hi, I practice on a stationary spinning type bike. I recently bought a computer to monitor rpm. But the description was wrong and it only shows kph or mph, not rpm. I have read a lot about conversions and i even unerstand the maths, but the results dont make sense to me. The radius of the front spinning wheel is 23 cms so i set the circunference to mm 3,14 pi x 2 x 23 cm x I have read about setting to so i get rpm directly, but when I pedal i still get about 30 kph. How can i set the computer to show rpm or how can i convert, say, 30 kph to rpm?

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This is more like a physics question or maybe I don't know this part in my project. The problem is that I'm getting wrong readings with the below logic. Please refer to the attached diagram and excerpt from my sketch and suggest me if I'm making any physics calculative mistakes. Posting it inline as you have done makes it much harder to read or copy and paste for diagnosis. It's still not too late to edit your post and do this. You'll make potential helpers much happier.

Enter a value to the speed field above, in order to see the results in this table. Cancel Print. Number of digits: 10 x notation for big numbers:. Minas E. Lemonis, PhD - Updated: March 27, More in this page: Characteristic speeds Multi-conversion table Relationships between units of speed. Convert to all other units Enter a value to the speed field above, in order to see the results in this table. Relationships between units of speed Select a unit: Millimeter per second Millimeter per hour Millimeter per day Millimeter per year Centimeter per second Centimeter per hour Centimeter per day Centimeter per year Meter per second Meter per hour Meter per day Meter per year Kilometer per second Kilometer per hour Kilometer per day Kilometer per year Inch per second Inch per hour Inch per day Inch per year Foot per second Foot per hour Foot per day Foot per year Yard per second Yard per hour Yard per day Yard per year Mile per second Mile per hour Mile per day Mile per year Knot naut. Average orbital speed of Earth around the Sun.

Rpm to km hr

You can also use it as an RPM to mph calculator. The first section explains the RPM definition and its extensive use in the automotive industry. In the second part, you will see how engine RPM relates to vehicle speed, and understand the effects of drivetrain transmission and tire size. Finally, we will show you, with an example, how to use our RPM calculator. We've also probably noticed that engine noise goes up with RPM. But what exactly is RPM? Why is it so extensively used when we talk about cars and engines? The RPM term can be employed for any rotating object. It means revolutions per minute or rotations per minute. Technically, RPM is a unit of rotational speed ; but in reality, it's more often used to say things like "engine RPM", meaning: "The engine's rotational speed".

Stationery stash

You are right that cnt count is a multiplier in the final result, but even if I make cnt as float, the values of cnt will never be between two integers, as here I'm only using one pair of magnet and hall sensor, which essentially means 1 count per revolution, so I have to increment cnt by 1 every time. Use the numbers the bike provides to mark your own progress as you use it, not to compare it with someone else's progress on the road. So you're saying that your code doesn't measure any difference in RPM between 60 and March 02, , Why do you manually convert from circumference to radius, then have the program convert back to circumference in the calculations. The radius of the front spinning wheel is 23 cms so i set the circunference to mm 3,14 pi x 2 x 23 cm x Oct 29, 0 1, Likes: 6. Visit noglider's homepage! Everywhere Threads This forum This thread. It's only 1,4. Hi, there.

Speed is the rate of change in position of an object, regardless of direction of travel. Velocity is speed in the context of direction.

Edit: I'm not real sure it's a good idea to detach interrupts then attach interrupts each time you do a calculation though. And each complete revolution will cover the same distance - the circumference of the wheel. Your weight, position, bike's weight, tires, and so many other factors contribute to making this impossible. Last edited: Sep 18, I have read about setting to so i get rpm directly, but when I pedal i still get about 30 kph. Ask a question, start a discussion or post something for sale! Advanced Search. Unless I chasing BMW's of course. Guys, This is more like a physics question or maybe I don't know this part in my project. This is more like a physics question or maybe I don't know this part in my project. Note that I'm just using one magnet and one hall sensor - would that matter? Hi, there. Stick em with the pointy end. And I can't see anything directly wrong. Have your ISR record the time that the interrupt occurred and save the time that the previous one occurred.