Easier than I thought....(Rotary Burns!)

Jakerooni said:
I'm going to do some expermentation on this. I know exactly why a smaller pad would heat up alot faster than a bigger pad on a rotary (I mean just think about it logically for a second and it should come to you) But without proof of effect it would just cause an unessecery ruckus on the boards here. So I'll get back to this at a later date.
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Sure a smaller pad has less thermal mass so you should be able to heat it up faster, but apply what TH0001 said, perhaps you had a machine shop course, your surface speed is much higher at the OD of a larger pad, if you have the motor horsepower you can do more work with a larger pad, and heat up that edge of the large pad.
 
Did you just contradict yourself??? regardless experiments first then we'll talk more about it.. Although I'm limited to regular 8" (7.5" if you must) and 6"(5.5 )pads. So it's going to be limited findings.
 
Jakerooni said:
I'm going to do some expermentation on this. I know exactly why a smaller pad would heat up alot faster than a bigger pad on a rotary (I mean just think about it logically for a second and it should come to you) But without proof of effect it would just cause an unessecery ruckus on the boards here. So I'll get back to this at a later date.
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It's like leverage - The greater the distance from the axis.



The machine does less and less work the farther the distance from the axis, but the friction is increased accordingly, creating more heat at the far ends.

Like a really long wrench, which explains the reverse of what I'm explaining.



May not be your traditional "heating up", as in the whole pad and surface, but the edges are moving much faster than the edges of a smaller pad.



Leverage.
 
Jakerooni said:
Did you just contradict yourself???
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No, I'm saying I understand your supposition that a smaller pad would have more heating problems due to its smaller thermal mass, but I'm also saying the the key element here seems to be the surface speed at the OD of the pad, hence the machine shop/turning analogy, where it's all about surface speed.
 
Remember it's not the pad that burns, it's the paint. So if you had a 2 foot pad, thermal mass of the pad is a non issue, the paint on the other hand is going to see a ridiculous linear speed and hence will burn because of the friction.
 
bullett said:
this is exactly why i havent had a go with my g220 yet. apparently you cant do it with one of these?



one question was this your car?
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A PC has a weak clutch by design that will bog down before you get even close to burning the paint.



Go to wwwMeguiarsonline.com and you can read MANY tutorials about their G220 and products to use with it. There's no reason to be afraid of it... ;)
 
Lumadar said:
A PC has a weak clutch by design that will bog down before you get even close to burning the paint.



Go to wwwMeguiarsonline.com and you can read MANY tutorials about their G220 and products to use with it. There's no reason to be afraid of it... ;)
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cool,thanks.i will have a look on there and go from there.:xyxthumbs
 
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