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Part 7 WTF Series on Ball Bearings

Part 7 of the WTF series of bearings
Faster WTH is up with all this Faster?
Ok I get it were guys we want bigger, faster, better, etc.
There seems to be this huge disconnect with what makes something faster, farther, whatever.
Based on many of the questions and the 'I saw it on YouTube'.
I spent a good deal of time going through YouTube more then I would like to admit.
I did see some really good or helpful How to YouTube videos and Hat's off to you guys.
How to videos is really all I could recommend there.

I posted up yesterday the formula for calculating a ball bearing's RPM.

The reason for that is to give some in sight to this faster and farther bit.

Does the Formula ever require you to input ABEC?
No it does not.

I am going to provide a few examples here to show this is not limited any specific item's we use.

Example 1:
A gentleman is changing motor bearings and doing a comparison.
At no time was a proper fit even considered.
Pop these out, pop these in and off and running.
How ever there was some considerable time spent with showing everyone how much longer it would spin.
Put the bearing in the end plate, put the rotor in the bearing and wow look at that.
It spins longer, going to be faster, oh me oh my.

Spin's longer in no way equates to faster.

The wind of the motor dictates how fast it can go.
The size and lubrication of bearing dictates how fast it can go.
Longer spin equates to less friction, rolling resistance.
It may spin up faster, require less effort, generate less heat, increase coasting
That is because you decreased friction.

On the track you may see a little faster time.
Since it can spin up faster you improved acceleration.
Since you reduced friction it carries speed better.
Since it requires less effort you put less demand on your batteries
providing better performance.

These are small amounts of improvement on a per lap basis but over the course of the race may be just
enough for a better finish.

Your motor is no faster, it is more efficient. Therefore providing better performance.

Example 2:
A gentleman has 2 fishing reels and doing a comparison.
At 1st he has 2 reels that are the same, each has different kinds of bearings.
He spins them by hand to show how the 1 with the upgraded bearings spins longer.
Once again I never saw anything concerning proper fit.
Just how long it spins.
Now they go to cast to see how they do.
Much to their surprise there really in not a huge difference in the actual cast distance.
How can this be we saw them spin much longer.

Drag coefficient of the line prevents that.

Take a ball of string and throw it.
If the ball stay's wound with no string tail unwinding it will go further.
The more the string unwinds and the more string in the air the more drag it has.
The distance will be less.

Your 1/4oz weight can only pull the string so far based on drag.

Now in spinning the reels by hand and it spun longer.
That was the same amount of effort on each spin and because you reduced friction
you get a longer spin. It was no faster just spin's longer, that is friction.
You would need to exert far less effort to get the exact same spin time.
Less effort because you reduced friction.


You are reducing friction but that does not mean faster, farther, etc.
Next article Part ? WTF Series on Ball Bearings

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