PC 7424, "Use 5 inch Pad Only"???

i have a 5" backing plate and use 5.5" 6.5" and 4" pads...the only thing I notice, and ZI dont know if its related, is that with the smaller pad, its hard to stop the rotaion of the pad on speed 6. With a 6.5" pad, I can almost stop the spin if I apply enough pressure. With the smaller pads, that is harder to do...
 
Saw this on the AG site



# The Flexible Backing Plate LC-43-125DA measures 5 Inches in Diameter and is perfect for pads up to 7.5�.



# The Flexible Backing Plate LC-43-148DA measures 6 Inches in Diameter and is perfect for pads 7.5" up to 8.5�.



So should I get the 5" BP?
 
I actually prefer to use a 6" plate with 6.5" pads and a 5" plate with 5.5" pads and a 3.5" plate with 4" pads...



on the rotary, I use a 6" with 6.5" pads...



call me crazy, but I have more control and it doesnt bog the PC down as much as a small plate with a bigger pad...(5" plate with 6.5" pad), not to mention faster results
 
toyotaguy said:
I actually prefer to use a 6" plate with 6.5" pads and a 5" plate with 5.5" pads and a 3.5" plate with 4" pads...



call me crazy, but I have more control and it doesnt bog the PC down as much as a small plate with a bigger pad...(5" plate with 6.5" pad), not to mention faster results
Click to expand...



Totally agree. As for using 7.5" pads with a PC, I wouldnt even considerate it. 6.5" is max in my world.
 
I stepped up to the 6" backing plate after using a 5" (with 6.5 pads) because I found that the pads would concave down in the center and flare up on the outside, after awhile when working with pressure on the edge it was able to pull itself off the velcro.



Haven't had any problems with the 6" backing plate so far, plus now I feel like the pad is supported better, no more "bowing up"



:beers
 
If you want to do any correcting, you need to go with a smaller pad. 5" backing plate and 6" or 6.5" pads are good for minor swirls. but if you want to remove scratches or heavy oxidation and swirls then a 4" pad and 3.5" backing plate is a must. With the UDM and PC it seems like the larger pads leave a lot more marring. When using medium to heavy polishes with the larger pads, the abrasives in the polish cut fine but when they break down there is not enough heat and power to smooth the rest of the finish out. Thus leaving the marring we all dislike so much. So if you are going to be doing a lot of correcting, smaller pads and backing plate are a must. IMO!



Happy New Year Everyone!!!!
 
oxidation doesnt get cut out...it gets chemically removed via a cutting pad and megs #66 cleaner polish/wax...then the whole car gets the normal polish job
 
I am a little confused with the backing plate and sizes of pads. I am totally new to machine polishing. If I get say a velcro flexible backing plate for my PC 7424 that means I can quickly change pads for different cutting/polishing variations by just pulling the pad off the velcro backing plate and add a different one? Do most pads like lake county, sonus, mequirs have velcro backs so they can be stuck on a standard velcro backing plate and easily taken off and switched or do I have to match backing plate types with pad types or they won't work? Do hook/loop backing plates have the velcro for attachment or do they use something different? Also I do want to do some correcting but some are saying it is better to go with smaller backing plates and pads for this. I was planning on getting a 5" flexible backing plate and using similiar sized pads Is there a big difference between different makes of these flexible backing plates? I have a black Lexus GS430 and would like to get rid of swirl marks, oxidation, water spots, small scratches, any recommondations on pads/polishes to accomplish this.
 
You kidding? Hook and Loop is Velcro.



Check out the Edge quick disconnect and pads. You should be ok starting with an orange pad. Worked well on my LS430.
 
lexusgs said:
Also I do want to do some correcting but some are saying it is better to go with smaller backing plates and pads for this. I was planning on getting a 5" flexible backing plate and using similiar sized pads Is there a big difference between different makes of these flexible backing plates? I have a black Lexus GS430 and would like to get rid of swirl marks, oxidation, water spots, small scratches, any recommondations on pads/polishes to accomplish this.
Click to expand...



The smaller the pad the more heat will be generated and the better correcting you can do.
 
I never touch my 6.5" pads. 6" is as large as I go especially with my UDM. A 5" backing plate with a 6.5" pad has too much room around the edge and you end up using only 5" of the pad anyways. The extra 1.5" that has no backing is worthless (PC & UDM). It is very hard to get to any edges of the car because the sid eof the pad raises up. Also, if you want to do any correcting without marring, a 4" or 5.5 or 6" pad is needed.



Now I am sure that there will be plenty to argue with this, but for a beginner the smaller pads will show the most work. A beginner needs to see pads and products work to learn from. A 6.5 inch pad and 5" backing plate is very very difficult to break down the polish and show the beginner the three steps that polishes break down to. So if you are new to this game, a 3.5" and a 5" backing plate is essential as is 4", 5.5" and 6" pads. They will give you the biggest bang and speed up the learning curve. IMO (which probably isn't worth a damn)
 
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