Griots Garage ROP vs PC 7424XP

Re: Griots Random vs 7424xp

MisterShark said:
I'm guessing that the PC's clutch is similiar to the ones they (and many, many other manufacturers) feature in cordless drill/drivers: it reacts to resistance upon it's intended rotation.

If you've used a drill/driver to turn screws into soft wood then you know how this works. You set the turnable numbered collar (located just above the drill's chuck) to a low number and the drill will stop turning (and start clicking instead) in order to prevent the screw from being screwed too far into the wood. The harder the wood (or other surface you're driving the screw into) the higher the number you dial up on the clutch collar.

With the PC 7424XP they've pre-set the clutch to a predetermined resistance setting so that it's impossible to overly exert pressure and have the pad still continue to turn. This is what makes the tool safe and probably impossible to burn paint with.
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Here's a thread I found that was posted by Kevin Brown. He did an awesome job in explaining how a DA works. BTW there is no clutch in a DA.

Here are a few rudimentary diagrams that will hopefully help you understand how the movement is created:

folder-G110-duo-700.jpg


folder-G110-mechanism-copy.jpg


how_the_R-O_works.jpg


dissectedviewROfolder700.jpg
 
Re: Griots Random vs 7424xp

OK, glad you quoted me in order to illustrate I was mistaken in my guess.
 
Re: Griots Random vs 7424xp

Rsurfer said:
BTW there is no clutch in a DA.
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And just to note, in the past when I've referred to it as a clutch it's because I needed a term to explain to the average person sitting in a classroom, sometimes 20 people sometimes 50 people that they can wrap their minds around.

DSC_6962.JPG
http://www.autogeekonline.net/gallery/data/694/DSC_6962.JPG



Dissecting a topic on a discussion forum is alway a fun sport, standing in front of large groups of people explaining the safety features of a tool when most of the people are scared they're going to either instill swirls or burn through the paint are two different things and often times I'm simply trying to address a BIGGER pictures than a handful of people on some discussion forum.

Make sense?

:laughing:

For example, the class I taught just this last weekend for Porsche owners,

Pictures & Comments from October 17th, 2009 Saturday Detailing 101

Most the guys attending this could wrap their minds around the idea of a mechanism that has the ability to slip so as not to instill swirls and/or remove too much paint and burn through the clear and expose the color coat.

Including the owner, who had never used a machine on paint before this class and now has the confidence to use one to finish creating a swirl-free finish over the rest of his Porsche.

SpaceCoast003.jpg


And Mike in this picture who is an engineer by trade..
SpaceCoast005.jpg



By the way, has anyone figured out what the SPECIFIC name is for the "Mechanisms" used in the 3 varieties of DA Polishers?
PC
  • G110/G220
  • Griot's ROP

If the word clutch is a problem, what is the correct name?

Just mechanism?

:props:
 
Re: Griots Random vs 7424xp

Back to the reason I started this whole thread .... I have figured it all out.

If you want to know which one of the pc 7424xp, new griots, Meg 110, cyclo or even the flex to get, you should find the time to attend Mike's detailing 101 class.

I got to try every one I wanted to try on either some test hoods or even on a student's Porsche. The class is a great way to spend a day, get your hands on the machines and get a ton of questions answered. Meghan was great in bringing out product and Mike made sure folks were not only educated in the 5 step process, but had a chance to do the "difficult" ones that are hard to replicate at home for most noobs/advanced noobs.

Don't know why the two bucket is best? Never clayed before? Don't want to drop $$$$$ on a polisher until you tried one? Don't know the difference between a wowo and wodwo product? This is the place!

I knew most of those things and simply wanted to get my hands on the polishers, which I did. However, I learned things about all of the steps.

All I can say is find the time to attend a class. AG is in beautiful Florida, do you really need an excuse to make a trip?

My two cents, btw, get the Griots if you are in that price range. Splurge on the flex if you can afford it!
 
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Re: Griots Random vs 7424xp

Mike.Phillips@Autogeek said:
By the way, has anyone figured out what the SPECIFIC name is for the "Mechanisms" used in the 3 varieties of DA Polishers?

PC
  • G110/G220
  • Griot's ROP
If the word clutch is a problem, what is the correct name?

Just mechanism?

:props:
Click to expand...

I recently fielded our collective question about what the industry term might be for the 'mechanism':

My question to Porter-Cable: "What is the mechanism called that causes the polisher to stop rotation when excessive pressure is exerted upon it?

Some of us are having a discussion on an online auto detailing forum and I incorrectly referred to the mechanism as a 'clutch' (such as my drill has). I'd like to clarify this for the sake of accuracy.

Thanks."

Porter-Cable's reply: "Dear James, we believe the following information addresses your inquiry.
The pad itself may stop rotating temporarily with excessive pressure, because it is mounted into a free-floating Spindle Bearing Assembly. However the overall mechanism is fixed & therefore never stops orbiting when the machine is running, unless something is damaged or worn.
Thank you for allowing us the opportunity to serve you. If your question remains unresolved or if you require additional information please update this incident".

So there you have it. I guess our 'mechanism' is called a "free-floating Spindle Bearing Assembly"
 
I have not read all of the posts in this thread. However, I cannot believe that any professional detailer would even be involved in this conversation other to give so advise. If you detail for a living, you either use a rotary or a Flex DA. Pros should use the absolute best tool around. It seems that every one agrees that Flex is the best hands down.

On the other hand, if you a hobbiest, it any open question and a matter of opinon.
 
Re: Griots Random vs 7424xp

Lasthope05 said:
I'd go for the Griots for three reasons. More amperage=more power/torque, backing plate and Lifetime warranty. None of which is offered by the PCXP.
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I completely agree!:iagree:
 
slimnib said:
I have not read all of the posts in this thread. However, I cannot believe that any professional detailer would even be involved in this conversation other to give so advise. If you detail for a living, you either use a rotary or a Flex DA. Pros should use the absolute best tool around. It seems that every one agrees that Flex is the best hands down.

On the other hand, if you a hobbiest, it any open question and a matter of opinon.
Click to expand...
I think you should take a look at some of the work done by Todd Helme and David Fermani amd see what they can do with a DA .
 
Didn't want to make this thread since it seems like a good bit of Griot 6" owners are in here.

Is it fine using a 5inch backplate with this polisher? I know for the PC7424 I purchased a 5inch counterweight. Looking online for another and for the life of me I can't find one for sale.
 
Re: Griots Random vs 7424xp

Lasthope05 said:
I'd go for the Griots for three reasons. More amperage=more power/torque, backing plate and Lifetime warranty. None of which is offered by the PCXP.
Click to expand...
I never argue with Alan. John I can tell you Dewayne made a replacement painless for me. UPS dropped off the old one. I would bite the bullet and buy the new Megs DA MF System with the 5" BP and a few extra Finishing Pads!
 
Rei86 said:
Didn't want to make this thread since it seems like a good bit of Griot 6" owners are in here.

Is it fine using a 5inch backplate with this polisher? I know for the PC7424 I purchased a 5inch counterweight. Looking online for another and for the life of me I can't find one for sale.
Click to expand...

I bought the Griots ROP and a 5" backplate. From what I've found searching the forum here the Griots will be fine. No need to hunt up another counterweight.

Edit: I've yet to use it myself as the weather here is lousy. Spring showers....
 
Yeah I've been looking and I don't think you can even change the counterweight on the Griot's..

Hell I can't even find a 5inch counterweight anymore for the PC.
 
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