G15 0r G21?

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banzaitoyota

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Any advantages or disadvantages to either one. Hobby detailer, mainly my cars and my neighbors cars




Feed back please
 
Advantage of the G21 over the G15 is the longer throw (21mm vs 15mm).

Disadvantage of the G21 is that it's harder to use on curved panels because of its 21mm throw and the use of 6.5" pads with the 6" BP. This can be alleviated slightly by swapping out the 6" BP for the 5" BP and use 5.5" pads instead.

If you want speed and larger coverage, I would suggest the G21. But if you want the ultimate versatility, I would suggest the G15 but you'll have less area that you'll cover.
 
I have a Fiat ABARTH, there is not a lot of real estate to cover
 
I would recommend the G15 for you. Don't feel like you're missing out by choosing a 15mm over a 21mm. It's already a big improvement over the standard DA polishers. You will love this machine.
 
I have a porter cable already, probably should have mentioned that
 
Marc08EX said:
Advantage of the G21 over the G15 is the longer throw (21mm vs 15mm).

Disadvantage of the G21 is that it's harder to use on curved panels because of its 21mm throw and the use of 6.5" pads with the 6" BP. This can be alleviated slightly by swapping out the 6" BP for the 5" BP and use 5.5" pads instead.





If you want speed and larger coverage, I would suggest the G21. But if you want the ultimate versatility, I would suggest the G15 but you'll have less area that you'll cover.
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:iagree:

Except for the machine selection. Go G21.

I bought a Rupes 15 a couple years ago and regretted not getting the 21.

I went with the G21, the larger throw is awesome. I got a 5" BP for it for versatility. It's a beast.
 
banzaitoyota said:
I have a Fiat ABARTH, there is not a lot of real estate to cover
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Get the 3.5" LC backing plate for that if you don't already have it and run 4" pads for correction and LSP's and your good to go. I do love my Rupes Mini but that's a whole other investment.
 
Id go g15 for most flexibility. You can always buy a 6" plate for the g15 too.
 
banzaitoyota said:
I have a porter cable already, probably should have mentioned that
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I also have the PC and use it with a 3.5" backing plate and 4" pads. This combined with the G15 I just purchased, I feel, is a great combo.

I did a full paint correction on my Tundra this past weekend (the paint had faded/oxidized to a nice flat white). I used the G15 on all the large, open, surface areas and followed up with the PC on the tighter spots and smaller areas that the 5.5" pad on the G15 was too big for.

This is a full size, four door, truck. I had previously (a few years ago) done the whole truck with the PC and 4" pads. And while the G15 with its longer throw and bigger pads is certainly nice, the extra coverage I got from the G15 wasn't life changing by any means. That said, even though I have not tried the 21 myself, I find it hard to wrap my head around the "extra coverage" argument people like to make in choosing the 21 over the 15. I don't know if the 21 is indeed a bit more difficult on curved panels, but I will say that the 15 definitely needs some technique to keep the pad spinning.

The good news is you really can't go wrong with either machine.
Don't over think it.
Good luck.
 
I was strongly considering a BOSS G15 as my next polisher, especially when I saw the "About Grigot's" page on Autogeek which indicated Griot products are manufactured in the U.S. (Indiana I believe) Unfortunately I found out that is not true, and that they are made in China according to Griot's own website. Very disappointed when I saw this.
 
Craig - unfortunately it doesn't seem so anymore. I always buy American when I can, and was hoping the GG Boss was American made, but as mentioned it isn't. So if I can't buy American-made, there are other choices from Germany and Italy.
 
ScottH said:
I was strongly considering a BOSS G15 as my next polisher, especially when I saw the "About Grigot's" page on Autogeek which indicated Griot products are manufactured in the U.S. (Indiana I believe) Unfortunately I found out that is not true, and that they are made in China according to Griot's own website. Very disappointed when I saw this.
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i think the manufactured in USA was in regard to their liquids (car wash, polishes/compounds, etc,)...
 
I've had a GG6 (equipped with a 5" BP and 5.5" pads) for the last five years -- it has served me well and there is nothing it can't correct with the right pad and polish. But, I was tired of switching BP in the middle of a detail to use 4" pads for the small bits. And, wanted something less tiring.

I went with the G15 since I only take care of our two cars and sometimes a friend or relative so I didn't need the extra correcting ability and felt the G15 would get into more spaces than the G21.

Well I couldn't be happier--the G15 (with standard B&S 5.5" pads) cut my polishing time almost in half with so much less effort it is amazing--little to no downward pressure needed. I've had no problem doing curved panels with 2 Griots supplied spacer washers installed.

Based on my initial testing the G15 is even smoother and more effective with the new B&S Low-Pro pads designed for large throw polishers so can't wait to do my full detail in the spring. And, I have the security of knowing both my polishers are covered by Griots lifetime warranty.
 
Ski2 - what pads are you currently using with your G15? Are you just using the new low profile pads, or have you also tried other pads? I saw a vid that indicated you should use their proprietary pads (the new thin ones you mentioned), but wondering if there is any reason not to use LC CSS pads if you have a large quantity/investment in them?

ScottH
 
ScottH said:
Craig - unfortunately it doesn't seem so anymore. I always buy American when I can, and was hoping the GG Boss was American made, but as mentioned it isn't. So if I can't buy American-made, there are other choices from Germany and Italy.
Click to expand...
Lifetime warranties are usually not offered
by many of those other choices though.


Bob
 
FUNX650 said:
Lifetime warranties are usually not offered
by many of those other choices though.


Bob
Click to expand...

That was kind of my point- anymore, the heavy hitters all seem to make good machines, so go with the combination of features and warranty/customer service that fits your needs.
 
I just got my G15 and I am loving it. I went over my Jeep hood again and it totally removed all swirls vs my Porter Cable which i guess i needed more passes. In about 15 mins i did the whole hood. It feels like a professionals machine.
 
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