Question about my trusty old PC 7424XP backing plate

cfiiman

cfiiman

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Hey all,

I bought a PC 7424XP years ago and it had a backing plate with it. I used Adam's 6" pads with it. Now I want to get some new pads here at AG and I keep seeing certain backing plate sizes mentioned (4, 5, 6) but I measured mine and it is 5.75, can someone tell me if this is the size that was suppose to come with it. Should I keep it and stick with 6" pads or should I go down to 5" or even 4"? I hear smaller is better with the PC but I'm not sure what to do. I wasn't sure if my 5.75 plate was referred to as a 5" or 6" or something or if it is just an odd size? Thanks for any help.
 
You're fine with that backing plate if you want to stick with 6 inch pads. Otherwise you need a smaller backing plate. For example use a 5 inch backing plate with 5 1/4 or 5 1/2 pads. Smaller pads will give you faster correction and less strain on the machine.

The reason the backing plate is sized that way is because you always want a smaller backing plate than pad.
 
blkSRT said:
You're fine with that backing plate if you want to stick with 6 inch pads. Otherwise you need a smaller backing plate. For example use a 5 inch backing plate with 5 1/4 or 5 1/2 pads. Smaller pads will give you faster correction and less strain on the machine.

The reason the backing plate is sized that way is because you always want a smaller backing plate than pad.
Click to expand...

Ok, so I'm stuck with 6" then, thanks for the info! Is there a "best" recommended size for this machine?
 
You're not stuck but you would have to change the backing plate. I would think most here prefer 5 1/2 inch pads with the PC.
 
Cool, can you recommend a good set of pads? All I've ever used is Adams.
 
I use a 5" backing plate with the 5.5" pads on my PC and it works fine. Not to make this to complicated, but pad recommendation also can be matched with compounds and polishes you are using.

I personally like both the Lake Country Hydrotech pads and the CCS pads.
 
Jaretr1 said:
I use a 5" backing plate with the 5.5" pads on my PC and it works fine. Not to make this to complicated, but pad recommendation also can be matched with compounds and polishes you are using.

I personally like both the Lake Country Hydrotech pads and the CCS pads.
Click to expand...

:iagree: I use CCS, and this weekend i will be trying some CG HexLogic pads... i used the green one (hex logic)so far and was impressed
 
Jaretr1 said:
I use a 5" backing plate with the 5.5" pads on my PC and it works fine. Not to make this to complicated, but pad recommendation also can be matched with compounds and polishes you are using.

I personally like both the Lake Country Hydrotech pads and the CCS pads.
Click to expand...

Great thanks, I'll check them out. When you say matched with compounds can you explain? Is there a certain brand you have to use or can I still use the Adam's compounds I have left over?

Mike.Phillips@Autogeek said:
Click this link,


Video: Mark your backing plate to make it easy to see pad rotation


More info than just how to mark your backing plate, it's just the first topic in the post.



:xyxthumbs:
Click to expand...

Thanks Mike! I'll watch it in a few.
 
If you get a bit bigger pads I would look into getting the matching counter weight. I realized I was using the wrong counter weight, got the correct one and and big improvement in the handling and vibration.

-Jordan
 
FOCUS.FREAK said:
If you get a bit bigger pads I would look into getting the matching counter weight. I realized I was using the wrong counter weight, got the correct one and and big improvement in the handling and vibration.

-Jordan
Click to expand...

Sorry, but I must disagree.

Using the PC as a 'polisher' vice a 'sander', the need of different counter weight is actually not needed. The action of a 'sander' on the machine is much more harsh than when using polishing pads.

Remember, the PC started its' life as a sander, and "we" turned it into a super polisher.

Bill
 
BillE said:
Sorry, but I must disagree.

Using the PC as a 'polisher' vice a 'sander', the need of different counter weight is actually not needed. The action of a 'sander' on the machine is much more harsh than when using polishing pads.

Remember, the PC started its' life as a sander, and "we" turned it into a super polisher.

Bill
Click to expand...


And here's the article that documents the history of the PC Sander to PC polisher....


The Free Floating Spindle Bearing Assembly - The Story Behind The Story...


I think I'm going to rename the above article...


And here's a related article...

The history behind polishing paint with a DA Polisher



And something to think about....

It's only the PC that you can change counterweights, the Meguiar's and Griot's for example, copies of the PC have no provision to change counterweights.


If Jordan notices a big improvement by switching counterweights then that's all that's important. I've never noticed any difference myself and I use these types of tools for all types of things,

Machine sanding car paint = THIN sanding disc.

Machine sanding wood - THIN sanding disc.

Machine paint polishing = Compounding, Polishing & Machine Waxing.

Machine decontamination = Nanoskin pads



:)
 
kevin_1981 said:
:iagree: I use CCS, and this weekend i will be trying some CG HexLogic pads... i used the green one (hex logic)so far and was impressed
Click to expand...

I have a mixture of CCS and Hex Logic too. I agree with the love for the green one! Wow! I was able to get my neighbor's 04 Mustang cleaned up with the green hex logic, and Ultimate Compound. Also 5.5" size. The blue pad with UP is great too.

I haven't used anything larger than the 5.5" pads on my pc. The 5.5" just works for me, and I don't see the need to "fix what isn't broken".
 
Mike.Phillips@Autogeek said:
And here's the article that documents the history of the PC Sander to PC polisher....


The Free Floating Spindle Bearing Assembly - The Story Behind The Story...


I think I'm going to rename the above article...


And here's a related article...

The history behind polishing paint with a DA Polisher



And something to think about....

It's only the PC that you can change counterweights, the Meguiar's and Griot's for example, copies of the PC have no provision to change counterweights.


If Jordan notices a big improvement by switching counterweights then that's all that's important. I've never noticed any difference myself and I use these types of tools for all types of things,

Machine sanding car paint = THIN sanding disc.

Machine sanding wood - THIN sanding disc.

Machine paint polishing = Compounding, Polishing & Machine Waxing.

Machine decontamination = Nanoskin pads



:)
Click to expand...

I love that article!
 
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