Griot's Garage G-9 vs. Porter Cable 7424XP

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lj993

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I am getting a polisher for my son. I have a Rupes 21 (version 1), a Flex 3401 and a Porter Cable 7424XP (I also have another Flex 3401 that I gave to my son-in-law that I picked up from a Forum member back in Boston last year). I usually use the Flex. The Rupes is pretty finicky on anything but larger flat surfaces and the Flex is just so much easier to use.

I am looking at getting either a Porter Cable 7424XP of the Griot's Garage G9. I have heard good things about the Griot's but a few reports of vibration issues. I actually pulled out my Porter Cable on Saturday to show my son a few tricks. I was amazed at how loud it was. My son, without any prompting, told me that it really vibrated. The $50 difference isn't a big deal for a better machine.

Any issues with the G9 as a free spinning machine vs a direct drive? I read that the Griot's with the 5 inch backing plate and thicker pads works great. Thoughts. thanks Phil
 
lj993 said:
I am getting a polisher for my son. I have a Rupes 21 (version 1), a Flex 3401 and a Porter Cable 7424XP (I also have another Flex 3401 that I gave to my son-in-law that I picked up from a Forum member back in Boston last year).

I usually use the Flex. The Rupes is pretty finicky on anything but larger flat surfaces and the Flex is just so much easier to use.


I am looking at getting either a Porter Cable 7424XP of the Griot's Garage G9. I have heard good things about the Griot's but a few reports of vibration issues. I actually pulled out my Porter Cable on Saturday to show my son a few tricks. I was amazed at how loud it was. My son, without any prompting, told me that it really vibrated. The $50 difference isn't a big deal for a better machine.
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So nice to hear you're teaching him how to take care of what for most people is their second largest investment in life - their car. :)



lj993 said:
Any issues with the G9 as a free spinning machine vs a direct drive?
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To me, this is comparing apples to oranges. I have an article like this when the topic of comparing RUPES to FLEX comes up and keep in mind, I wrote the article before RUPES introduced their gear-driven Mille and before FLEX introduced their free spinning FINISHER. So in context, when someone asked or compared RUPES to FLEX they were comparing free spinning to gear-driven and in the article I even include a picture of an apple and an orange.


FLEX 3401 or RUPES? - A question I get asked a lot! -Mike Phillips


Apples_to_Oranges_002.JPG






But to you question, same answer from me. As you know, there's simple ZERO pad stalling with a gear-driven orbital. Any brand of free spinning random orbital is going to experience pad stalling at some point while buffing out the curves or tight areas on a car.

BUT - I believe SHORT STROKE free spinning polishers are less prone to pad stalling than long stroke free spinning polishers due to the Ghosting

The ghosting footprint and the actual footprint - Long Stroke Free Spinning Orbital Polishers

ghosting_0004.jpg






lj993 said:
I read that the Griot's with the 5 inch backing plate and thicker pads works great. Thoughts. thanks Phil
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I wrote this, (and then read it), in my review. The thing is, the G9 has so much power, it's has no problems turning and churning thicker pads, especially if you swap to the 5" backing plate.


Here's my articles on these two topics,

Foam Pad Options for the Griots G9 Polisher




Backing Plate Swap - 5 inch backing plate for the Griot's Garage G9


Griots_5_inch_G9_Backing_Plate_006.JPG





And I believe this is still the most exhaustive text review.

Review: Griot's G9 - 9mm Orbit Stroke Random Orbital Polisher by Mike Phillips


:)
 
The Griots G9 seems cutting edge as for design, power, and the warrantee is a no brainer.

There's seems to have been a few here who have had issues with their G9. Could be quality control related, seems only the detachable Cord was the issue with one or two units. Griots apparently made good to those customers, and I'll leave others to comment if they choose.

I think all these machines are going to be a bit loud, give or take just a few decibels.

I have a PC7424XP. As far as I'm concerned, there's only two correction speeds on this machine, speed 5 and 6. Speed 5 sometimes feels inadequate, and 6 is way over the top with noise and vibration IMO.

The Griots G9 should be the more powerful machine.

With Griots you've got a lifetime warrantee and 180 day return for full refund warrantee if you don't like it. I'd assume even if you buy the machine here, Griots honors that return warrantee in that Autogeek is a Griots authorized dealer.

While the PC is a pretty sturdy machine, the Griots ups it in so many ways with it's more modern design incorporations.

Even with some minor glitches recently found, if it was me looking between the PC and the Griots G9, I think I'd go with the Griots.

Reckon the choice has to be yours.
 
Shouldn’t even be compared. The G9 is far superior in every way.


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I have both since Santa just gave me the G9. The Porter Cable 7424XP has a 540 Watt motor and the G9 has a 1000 Watt motor. The G9 is a better choice hands down. It is more powerful, smoother operating, cooler operating and more ergonomically designed.
 
UncleDavy said:
I have both since Santa just gave me the G9. The Porter Cable 7424XP has a 540 Watt motor and the G9 has a 1000 Watt motor. The G9 is a better choice hands down. It is more powerful, smoother operating, cooler operating and more ergonomically designed.
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And it looks like a modern day polisher.
 
Rsurfer said:
And it looks like a modern day polisher.
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Funny how I think of "modern day".
I can think about 25 years back, a guy at work scored some Porter Cable Orbital Waxer machine cheap, and I recall I was jealous! LOL Like I lost out on the Lottery! HaHa.

If you could see what that thing looked like, similar to the old Waxcoa Machines, it looked like the Planet Saturn! LOL

JHC, What junk we had back in the day to detail and take care of a car!
 
The Porter Cable is a good machine and in many cases will do the job, however the one time I had a chance to try one it seemed to be louder and vibrate more than the GG6 I had at the time which had more power to boot. I now have the GG9 and I find it to be a tad less noisy and considerably less vibration than the GG6 I had. If the extra $ is not an issue, the GG9 will be a better machine and a lifetime warranty to boot.
 
Sold. I have a G9 in the autogeek cart, along with a 5 inch backing plate and a six pack of pads. Thank you all for the input. All the best. Phil
 
WRAPT C5Z06 said:
Shouldn’t even be compared. The G9 is far superior in every way.


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Completely agree, these two machines shouldnt even be in the same comparison conversation. Its not even fair as one hasnt been updated for what 10 years? And the other is brand new design etc. There was already no comparison between the GG6v2 and a PC, let alone the G9 now.
 
Order made, G9, a five-inch backing plate, a six-pack of pads and a couple more pads. Why doesn't Griot's just offer the G9 with the five-inch backing plate instead of or in place of the six-inch backing plate. Seems like everyone replaces the six with the five anyway. Autogeek has a nice package on sale that includes the G9, a five-inch backing plate and a few pads, but the backing plate is not the Griot's Garage version it is the Lake Country Hook and Loop version, nice quality, but without the cooling holes......

We had a change to buff out the new Toyota Highlander before they headed back to Utah. It was getting late in the day and was bit cool, so we opted to use HD Speed vs. One Step. Highlander came out looking terrific.

Thanks again for the input. Love this forum and the boundless amount of wisdom shared. Phil
 
lj993 said:
Order made, G9, a five-inch backing plate, a six-pack of pads and a couple more pads. Why doesn't Griot's just offer the G9 with the five-inch backing plate instead of or in place of the six-inch backing plate. Seems like everyone replaces the six with the five anyway. Autogeek has a nice package on sale that includes the G9, a five-inch backing plate and a few pads, but the backing plate is not the Griot's Garage version it is the Lake Country Hook and Loop version, nice quality, but without the cooling holes......

We had a change to buff out the new Toyota Highlander before they headed back to Utah. It was getting late in the day and was bit cool, so we opted to use HD Speed vs. One Step. Highlander came out looking terrific.

Thanks again for the input. Love this forum and the boundless amount of wisdom shared. Phil
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Yeah, so many of us have wondered the same thing about why the 5" Backing Plate doesn't come stock with their DAs. Same with Porter Cable and others.

I wanted to make mention to you quickly, just in case. There are two Griots Garage 5" Ventilated Backing Plates. One, a universal Model that will fit basically all other DAs, including their GG6, Porter Cable, Megs, and all others with a 5/16" threaded Stud.

Then there is a specific 5" Ventilated Plate designed and optimized for the G9 Polisher. Check to insure you got the correct Plate.

Either Plate will fit the G9, but the newer G9 specific Plate is said to take advantage of their patented Cooling Fin system within the Shroud.
 
I now use my PC as a 3", and it excels at this task.

It's a little loud, but I already owned it and using it as a 3" is better than it collecting dust.
 
I figured I’d post this here instead of a new thread.

I changed from a 7424XP to the G9 a couple months ago.

On my third job with it, yesterday, I was HDSpeeding the roof of a Grand Marquis and felt something like a stone hit my chest. I let go of the trigger but it stuck on, G9 running full speed and wouldn’t turn off. Pulled the power cord from it to kill it.

Turns out the trigger lock button had popped out of its housing, likely a spring was lost in that moment.

I was able to take it apart and pull the trigger lock stud (center of picture) out of the housing, reassembled it, and continue the job using only the trigger. My pride was the only thing keeping me from finishing the job with my 7424.

I’ll be calling Griot’s tomorrow when they’re open, hoping to resolve this.

f7b96e769a81b4f6908490b4e24a5620.jpg



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Yikes. Sorry to hear that, Eric.

Rest assured though, Griot's will make it right.
 
Sure seem to have some QC issues with new vendor. AG forum is a small sample size but seems to be alot. Wonder who new manufacturer is


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Coatingsarecrack said:
Sure seem to have some QC issues with new vendor. AG forum is a small sample size but seems to be alot. Wonder who new manufacturer is


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As with all new/redesigned machines. Including the auto industry. These bugs will rarely show up until the products get out into the real world.

Griot's has a lifetime warranty, and will take these issues seriously. The auto industry has a warranty period, and a recall program for known defects.

None of these will cost any customer a dime. :)
 
No don’t get me wrong... i’m a Griots fan but G9 has been having issues since release. I don’t think it’s them and 100% will make it right. But if the manufacturer the chose is having issues or cutting corners.... not much griots can do at this point but take care of customers.

This not something in house manufactured that can becturned around ASAP.

The nice thing about the BOSS polishers is maybe they’ve had time to change flaws that were foumd before these came out


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