I was planning to have a rupes 21 for my Christmas gift but after I saw this video
https://www.youtube.com/watch?v=RwHh0tT0BLM, I am very disappointed because about 1/2 time, the pad seems like stall or rotates very slowly. My duetto works way better than that. It will stall on certain panel too. but at least I can finish 90% of my car ,then leave the rest for GG6 with 4 inches bp.
Detailing is my hobby , I am not like any pro to have many tools so that they can use certain tool for certain panel. For me duetto plus GG6 is sufficient for my needs now.
We have both and I usually use the 21 and my partner the Duetto. Both are washer modded. I noticed his pad spins a lot slower than mine.
I wouldn't go off one video no matter what I was researching. There is another review I just happened to read last night that was written soon after the Rupes was released. The guy said he actually did two panels with it. One using only the weight of the machine and the other enough force to hear it bog a little but not stall the pad and it was his opinion the side with very little downward pressure actually came out better and faster.
I have only been in the business about 4 months and until then I had never touched a polisher of any type. Rupes was the first. I read like crazy about them. From my research (not experience) the machine defies a persons natural tendency to push harder to correct more. It seems to be quite the opposite.
I use slow arm movements with about the weight of my hand on it. I have seen some pretty amazing correction with just a megs MF finishing pad and XMT AIO. Also the Meg's DA system works great on it for multi step.
The fact that you DON'T have to apply pressure and you AREN't fighting the machine should be considered a huge benefit. Let the long throw do the work for you.
And as I said above, I am new to this so take what I say with that in mind. I lack actual experience with the machine but read and watched just about everything that exist online about it.
Not sure if it was mentioned but go to Kevin Brown's Buff Daddy sight, the guy seems to have this thing down to a science, literally.
As I contemplate the purchase of a Rupes 15 or 21 threads like this are very confusing. A number of full time detailers report NO problems with the Rupes stalling and use it exclusively in their detailing business (of course they use a conventional DA with small pads for tight areas). All report the Rupes operation is so smooth and effortless (because there is no need for more than very light pressure) that they find it much less fatiguing and most report it has cut there time required by 30% because the Rupes finishes so well it eliminates a step in many cases.
It is confusing when there are posts claiming the Rupes stalls and people have moved on to forced rotation machines.
So what is the secret to success with the Rupes??
I think somebody said it earlier, they don't take the time to learn it. I am a complete NOOB with the thing and I don't get the stalling EXCEPT when it's my fault. I can go over all sorts of body lines. I follow the contour. I don't just do a Monster Trunk run over everything like it's flat. Maybe some people like that and the Flex is better for that.
BTW the guy that detailed my car before I got in the business had just about every polisher produced. He has been in the business for I think 25 years. When I dropped my car off he was showing me the tools he uses. He went on and on about the Rupes and he doesn't even have the washer mod. It's actually because of him we bought 3 of them when we opened shop.