Rupes vs. Griots Showdown - Rupes Duetto and Mini vs. Griot's 6 and 3 inch polishers

So if I'm reading this correctly, the Duetto and Mini are the same body? The differences are the backing plates and the tuning of the machines? How is the mini's throw for smaller areas?
 
From what I read, they both have the same throw. Someone will correct me if I am wrong.

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RSTARK said:
From what I read, they both have the same throw. Someone will correct me if I am wrong.

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They both have a 12mm throw (compared to the FLEX 3401 and PC-style which are 5/16 or 8mm). I haven't found an area yet where the stroke was a problem (this isn't to say there aren't areas were the large stroke could limit access, it just hasn't proven so yet).
 
Todd--any idea when you might be able to post a comparison between the Duetto and the LHR 15 ES?? There's a 15% off no exclusions sale at AG today and would like to take advantage of it if possible.

ski2 said:
Great comparison Todd!! Been happy with my GG DA, but the thought of having to do fewer passes and with little to no vibration (old bones) is very enticing. The big question in my mind is: What way to go-- Duetto at $320 or LHR 15ES for $350??? If the Duetto was $200 it would be a no brain decision, but at only $30 difference it is more difficult. Hope you plan a comparison of these two!!!
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ski2 said:
Todd--any idea when you might be able to post a comparison between the Duetto and the LHR 15 ES?? There's a 15% off no exclusions sale at AG today and would like to take advantage of it if possible.
Click to expand...

It will probably be a few weeks, next time I am at the office I will.
 
Thanks Todd! As it turns out there's no rush. Sale says "No Exclusions" but Rupes polishers are not included. Sure is a different definition of "No Exclusions" than in my dictionary.
 
Let me expand on that answer a little more...

Imagine a pad that is 6 inches tall. Let's attach your hand to it, by velcro. Now press down firm enough to compress the foam slightly and really work it against the paint.

Now, doing your best Karate Kid 1/ Mr. Myagi, move your hand in a tiny, 1 mm, circle. All of the motion will be absorbed in the height of the foam and the pad will not move against the paint.

Instead of doing tiny 1 inch circles, move your hand in the biggest circle your arm will allow. If you have a 2 foot long arm, this would be a 4 foot orbit. The pad, while it might drag slightly in the first few increase, will move along the paint at the same speed as your arm.

As orbit size increases, pad height becomes less critical as the orbit size takes up the slack created by the extra material.

So with something that has a 12mm throw, I don't know if you would see much benefit to using a thinner pad. With the full sized Rupes (15 and 21) I much prefer the cushioning provided by the thicker Rupes' pads.
 
Todd Helme said:
Let me expand on that answer a little more...

Imagine a pad that is 6 inches tall. Let's attach your hand to it, by velcro. Now press down firm enough to compress the foam slightly and really work it against the paint.

Now, doing your best Karate Kid 1/ Mr. Myagi, move your hand in a tiny, 1 mm, circle. All of the motion will be absorbed in the height of the foam and the pad will not move against the paint.

Instead of doing tiny 1 inch circles, move your hand in the biggest circle your arm will allow. If you have a 2 foot long arm, this would be a 4 foot orbit. The pad, while it might drag slightly in the first few inches, will move along the paint at the same speed as your arm.

As orbit size increases, pad height becomes less critical as the orbit size takes up the slack created by the extra material.

So with something that has a 12mm throw, I don't know if you would see much benefit to using a thinner pad. With the full sized Rupes (15 and 21) I much prefer the cushioning provided by the thicker Rupes' pads.
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Berry, Berry good stuff!! :rockon
 
Rupes vs. Griots Showdown - Rupes Duetto and Mini vs. Griot's 6 and 3 inch po...

Todd Helme said:
So with something that has a 12mm throw, I don't know if you would see much benefit to using a thinner pad.
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Just to clarify, there may not be a benefit with a thinner pad with the 12mm throw, but is there a detriment compared to the standard thickness?


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Re: Rupes vs. Griots Showdown - Rupes Duetto and Mini vs. Griot's 6 and 3 inch po...

SSizzlin' said:
Just to clarify, there may not be a benefit with a thinner pad with the 12mm throw, but is there a detriment compared to the standard thickness?


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Maybe a little more of a "grab", but that's it.
 
Rupes vs. Griots Showdown - Rupes Duetto and Mini vs. Griot's 6 and 3 inch po...

Todd Helme said:
Maybe a little more of a "grab", but that's it.
Click to expand...

Tried the standard thickness hydro's on the duetto today, and like you said, there's less wobble and smoother than the 7/8" hydro's.


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Re: Rupes vs. Griots Showdown - Rupes Duetto and Mini vs. Griot's 6 and 3 inch po...

SSizzlin' said:
Tried the standard thickness hydro's on the duetto today, and like you said, there's less wobble and smoother than the 7/8" hydro's.


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Click to expand...

:) :rockon would I lie to you?! geeze...
 
ski2 said:
Todd--any idea when you might be able to post a comparison between the Duetto and the LHR 15 ES?? There's a 15% off no exclusions sale at AG today and would like to take advantage of it if possible.
Click to expand...

I'd like to see that too^^^^^^^, when you have time.
 
If you do the above test, may I make one suggestion on methodology? It would be better if the hood/panel used for testing was damaged consistently across all four quadrants. For example, you could start with a defect free panel, then damage it "evenly" across the entire panel - maybe using 1500 or 2000 grit sandpaper. In some respects, it would be a PITA, but in other respects, you could make a perfect test matrix out of just about any panel you had laying around.

In the Rupes v GG test, if one of the quadrants had more damage than the other three, it would put the device used for that quadrant at a disadvantage.

Just a thought - appreciate that you were nice enough to even do this comparison in the first place.
 
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