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Old 11-17-2014, 11:16 AM   #208 (permalink)
Cyruscosmo
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Quote:
Originally Posted by thingstodo View Post
This site lists the 14 inch tires I'm using at 902 revs per mile EV Calculator

At 60 mph, that give me 902 rpm. So around 1000 rpm.

Anyone have ideas on how to measure vibration under 1000 hz, that is cheap and that I can mount on a car axle?
Why do you want to measure vibration? Balancing a drive line costs about 30 bucks.

Now if you are doing an experiment you can use a couple hose clamps to do a temporary balance.

Set the car on blocks attach two hose clamps to the drive line and set them tight. Run the car and if it vibrates rotate the clamps away from each other until it goes away. Then wrap the clamps with electrical tape to hold um in place.

I have had to use this method a few times getting four wheelers out of the mountains after field repairs of drive lines.

But if you just want to measure vibrations you can use one of these. https://www.sparkfun.com/products/9199

Cyruscosmo
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