The great SFPM Debate

[sswee]

I was talking to rides20. Try the flash chat.

[rides20]

HAHAHAHAHAH....I think i'll just stick to polishing! I guess I dont need to know why I can make stuff shine!HAHAAHH..Actually sswee, that was a big help it is actually a tad clearer now. Thanks (I clicked your add reputation button) HAHAHAHAAHAHAH

[mpierich]

Originally Posted by rides20

..Alright everyone bear with me here...

Think of it this way...say a 6" wheel and an 8" wheel are traveling at the same RPM's. The circumference around the 8" is more inches than the circumference around the 6". That means that the surface of the 8" has to travel _more_inches _in_the_same_time_period_ than the surface of the 6", which equates to more feet per minute, or inches per second, or miles per hour even.

I figger when a piece grabs on the wheel and leaves my hand (which happens a lot less frequently nowadays), it's traveling at about 80 mph.

[fxstcguy98]

My turn, think of tying a rock at the end of a 10' string, if you held the string at arms length and spun in a circle the rock will be hauling balls to keep up with your hand.

[mcaswell]

Look at it like this

The CIRCUMFERENCE of a wheel is Diameter (D) x Pi (3.14)
Or roughly D x 3

So, a 4" wheel = 4 x 3 = 12.
One revolution of that wheel will travel 12" along the ground

A 6" wheel = 6 x 3 = 18
One revolution of that wheel will travel 18" along the ground

An 8" wheel = 8 x 3 = 24
One revolution of that wheel will travel 24" along the ground

If these wheels are mounted on your buffer, which does 1 revolution, a point on the circumference of will travel different distances, depending on the diameter of the wheel.

If the motor revolves the wheel 3500 RPM - then the distance of that point on each wheel will travel further as the wheels get bigger.

So, seeing as RPM is a time element, greater distances will be traveled in the given time of one minute.

Clear as mud eh??

[rides20]

..Cool...Now I think It's time for me to get a bigger buffer!

[fly]

Why didn't you just say so in the begining.

[rides20]

..the buffer might have to wait!..I just bought 2 RD350 frames...one for me and one to build for a friend of mine! sorry for going off topic, but I'm excited!