Flex - first time experience

mbpress01

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First, I would like to say thanks to all the forum members on this site. As a weekend warrior, where every minute is important, I am always reading/researching time vs results. Clearly, the more time you have (as a hobbyist) the better result you will have and since most of us don't have unlimited time maximizing this ratio is critical.

Last year I purchased a black GS 350 and wanted to ensure that the paint stayed in good shape. After doing a ton of research I went all in with the rupes system (pads, polishers, and polishes). I had the 15, Duetto, mini, more pads that i could count and polishes. After spending hours researching the various "techniques" and such I, unfortunately, scrapped the whole system. My reasoning was that, regardless what others may think, Rupes, as well as every other DA polishers that is not forced rotation, will stop if the pad is not flat. Most importantly, modern cars, with all the curvy panels make these non-forced DA almost impossible to polish unless you have tons of time. No doubt anyone can get it to work if you can spend 1 hr on a 2x2 section, but these so called techniques to me are just like the mythical unicorn. You hear about it, see pictures of them but never see it live. I think it is time that anyone who has the technique, please film it and post to these forums since I would love to know how to make it spin on a curvy/vertical panel. And I can state unequivocally I tried very very hard to make this system work. Super slow arm speed, tilting the machine back and forth, washer mod, etc. I read and tried it all. I actually wound up polishing the whole car with the mini and that took 20 hours and it came out marginal.

End result was a $3k loss or so. I ebay all the stuff for basically nothing. Now onto the Flex.

Initial Impressions:

- This machine is a beast. It is not that heavy, the trigger is smooth (meaning it locks into place very easily), it is easy to swap the backing plate to the LC 4 inch, and at least for me operates perfectly. (Please make sure to buy ear plugs though - any DA is loud and I couldn't believe how much better one can operate the machine with the reduced volume - not sure why though).
- I started on my dad's car since I wanted to see what this machine could do on a test car - 2009 Ford Taurus Blue Metalic.
- Products - White hybrid, 4 inch LC backing plate and Menzerna 3in1. Wash Clayed car first.
- I followed somewhat the Tato technique - 2 hard passes, 2 medium passes and 2 weight of the machine passes.
- After the first 2x2 section was done I was like "WOW" what a machine. I actually had fun polishing for the first time.
- I continued on the whole car and where this tool shines is on the curvy/vertical panels. It took no time to finish the doors, bumpers, etc. The smaller areas (behind the side mirrors) you still need a mini since it won't fit.
- What was really great was that I finally good the nice looking buffer trails on the whole car. I can state that on curvy vertical panels with the Rupes you got polish that was just moved around, no real nice buffer trails and minimal correction.
- The whole process took no more than 6 hrs and the car came out great - one step below show car finish - all the freakin swirls were removed. I literally couldn't believe it and it was just fun to do this project. Every time with the Rupes i was very frustrated, angry, upset etc since the damn pad would stop every 5 seconds the minute it hit anything curvy and vertical. Sorry, but Rupes has some real issues and this is well documented in various places on these forums.

Final Thoughts:

Contrary to what is generally said, the Flex is the better tool for the weekend warrior AND for the newbie. My reasoning is that the newbie doesn't have to learn these "special techniques", just prime the pad and polish. I initially thought that the paint may burn or some other catastrophe may happen with the Flex but was that way overblown. You really can't damage the paint at all if you are just a little careful. As we all see tons of questions about Rupes vs Flex, for me at least and if you are a newbie/weekend warrior, the answer is clear - get the Flex (and this is from someone who spent a ton of money on Rupes). The whole thing about the smoothness of the Rupes is probably very important for the professionals whom perform details every day year in and year out but again I didn't find the Flex to be any different than the Rupes in terms of ease of use / smoothness. Finally, we hear comments about the Flex walking on you and such and I did have that happen but I didn't really care, I just strong forced the pad on the panel and got the beautiful buffer trails. Man that was a great feeling as I knew that the paint was being corrected. All in all the Flex is really remarkable.

Appreciate any comments and thanks for reading (sorry to be long-winded but I really hope this at least helps some in their decision).
 
Appreciate any comments and thanks for reading (sorry to be long-winded but I really hope this at least helps some in their decision).

Thanks! After 9 yrs with a PC, and around 3 with the GG, I finally bought a Flex last week. Your "long-winded" post reinforces my decision! I'm sure I will have no regrets!
 
I have the Rupes 15 and have been really considering switching to the Flex system to speed up my heavy correction. the rupes was a huge step up from my PC, but just doesn't hit the mark i need it to.
 
Buy the flex. Unfortunately you will wind up shelving the rupes as time is money and flex is just a beast. As I said above, time vs results is key for me and flex not only nailed that ratio but it is just more fun to use. I realize it is a lot of money but it is worth it. FYI I just bought another one - one for 4 inch plate and another with the factory plate. Changing plates takes too much time - I just want to polish and admire my work. Lol.
 
Thank you! This definitely helps some of reinforce my thoughts, and findings thus far
 
The Flex counter rotates, right? Did it take you a while to get used to it rotatingopposite of the other polishers?
 
Regarding counter rotating, another non-issue from people that probably haven't used it. Counter rotation was nothing and didn't make a bit of difference. It took me, say, 3 seconds, to get used to this machine. That is what makes this tool so outstanding. It spins non-stop no matter hard you press or the angle of attack. I tell you I spent hours with the best Rupes tools and man what a difference Flex is. The pleasure of getting polishing work done far outweighs supposed smoothness, its ridiculous. I am starting to think that these non-forced DAs overtime will go the way of the Dinosaur - they don't make a lot of sense to me if you want to keep your car swirl free in a minimal amount of time. I think the general appeal has been there low cost vs the flex but that is not the case anymore. The Rupes, new Boss, etc are all expensive. Better to spend the extra and just go with something that works. I truly am all in on the Flex.
 
The Flex counter rotates, right? Did it take you a while to get used to it rotatingopposite of the other polishers?

I've heard this brought up before. My guess is that it is a factor for guys that do this day in, day out. You learn instinctively which direction to approach a curve, panel, etc. as you've done it a hundred times and you know the direction the tool wants to go. The Flex reverses that, and since it will walk on you much easier, the approach is much more important, IMO.

It kind of plays against your instincts if you've been at it for a while. For those of us that do this maybe twice a year? Non issue, as you have to relearn all that technique anyway.
 
regardless what others may think, Rupes, as well as every other DA polishers that is not forced rotation, will stop if the pad is not flat.

For someone who is inexperienced with polishing, you sure sound pretty sure.

It is your inexperience that you can't work the Rupes. There are times when I pick up the FLEX, but it is very rare.

Not to mention how much better the rupes finishes.
 
Great review! I have been using the Flex and must say it is an awesome machine!! As for counter rotating or rotating closkwise...that has never been an issue. Simply put this machine is a beast and my correcting time is reduced significantly.

I have never used a Rupes so I cannot comment about its effectiveness. I can comment about the PC7424XP and the OP is correct...if there is a curved panel....you are pretty much at the mercy of your technique to try to be effective at correcting. Additionally, I still use the PC for sealant/wax application or use a 3" Pad for minor correcting, however, I only use it because I want to.

The Flex just does everything and I am very happy with it. The learning curve for the Flex IMO is fairly easy and you will get used to it quickly. That goes for beginners and PC users (can't say fo any other DA's).

The forced rotation will let you correct/polish regardless of a curved panel or not. Lately, I have been working on quite a few cars over the weekend (hobbyist not a business) and if it wasn't for the Flex I could not finish detailing a car with a full correction over the weekend. If I had a PC forget it! Thank you for your review.

PS: Thank you for the pointer about the ear plugs!! I am going to try that.
 
I would like to respond to your comment about my "inexperience" regarding Rupes. From a Mike Phillips post in 2012 regarding pad stalling on DA Machines.

"Too little pressure - There's a quirky thing about these tools that if you hold the pad just right against the paint as though barely touching it the pad won't rotate like it does under pressure but more or less just flutter and even rotate backwards or counter-clockwise.

Too much pressure - If you apply too much pressure you can stop the pad from spinning, this is the safety characteristic that Newbies love and experience people forget about after they master the tool and then complain because the pad stops spinning.

Uneven pressure against pad - If you don't hold the pad flat to the surface, that is you hold the body of the tool in a way that pressure is greater to just an edge or side of the face of the pad you can easily stop the pad from spinning. This is more noticeable with larger pads like 6.5" and 7" pads as the larger the diameter the pad the more leverage the pad has over the spindler/drive mechanism.

Raised body line - If you're buffing on a raised body line there will be more pressure to smaller area of the face of the pad and this can be enough to stop or slow down the rotation of the pad.

Convex or Concave shaped body panel - Like a raised body line, if you're working on a convex or concave shaped body panel you can have more pressure to the outer edges of the pad or the inner portion of the pad and this can stop the pad from rotating or slow pad rotation down.

Too large a pad - When buffing with larger pads the larger diameter of the pad give the pad leverage over the spindle and this can stop pad rotating or slow pad rotation down.

Wet or saturated pad - When a pad becomes wet or saturated with product the combination of foam and liquid act to absorb and dissipate the energy coming out of the tool and this can stop or slow down the rotation of a pad."

Since you are a top detailer with the "special technique", it would be much appreciated if you could film it and post it here so I can see that technique and how you actually can accomplish pad rotation. As I said many times and have done 100s of hours of research on this issue, I have not seen any videos showing how to get around the above and have the pad not stall or slow down. Please post the special technique for all of us to see and then we can all then decide for ourselves the better machine.
 
we hear comments about the Flex walking on you and such and I did have that happen but I didn't really care, I just strong forced the pad on the panel and got the beautiful buffer trails.

Hmm, I've never heard of anyone describing buffer trails as beautiful. Can you explain what you mean?

Other than the cheapo orbital buffer I had 15 years ago, the only machine polisher I've ever used is my Rupes Duetto. Yes, sometimes it stalls, but not very often. I change my technique a bit to work around that (pressure, the angle at which I hold it). As for the Flex, I hope to try one one day, but since I don't polish for a living, I may never have that opportunity.

My closing thought is that there is no perfect polisher. It's great you like the 3401. I know some people don't like the Flex. that's okay too. To paraphrase Mike Phillips, "Use whatever you like."
 
My comment was mean to convey the ease and speed of the Flex since when you properly polish (like a Mike Phillips) you see a perfect overlapping somewhat circular amount of polish where you were working. When I used a Rupes on vertical or curved panel I didn't get this while the Flex performed fantastically (on every panel) and I got these excellent looking buffer trails. I am sure Mike Phillips could explain better but unless you see these you are not doing something right and I think that is from pad stall from the Rupes.

Good on the Duetto for you, but why change technique - (pressure, angle of hold) and you nailed my issue. You need to adjust the the polisher or it will stall and I experienced this over and over again. On flat panels, nothing to really say, all machines will work well but since a car is, let's say, 1/2 vertical curvy, I just couldn't get the Duetto to work and boy did I try. As an aside, I realize money is always tight but if you can get the Flex - do it. I believe, you will retire the Duetto and save yourself tons of time. As I said above, I actually enjoyed the project. Flex makes it fun!!!
 
I have the 3401, Duetto, and the pc 7424xp, and a craftsman 5" orbital, variable speed palm sander.

The pc gets used the most.

But, I love all of these machines.

What works for one person may not work for others, and there is no harm in - using a tool suited for your style -.

To me, that's just common sense. Hey, the Rupes wasn't working for you, so you moved to something that would. That's a beautiful thing, and I'm thankful to have so many options.

When I started getting into this, it was basically rotaries, and random orbital waxes from Sears, or Kmart.
 
Would you also like a blank check witht that? :buffing:

I would like to respond to your comment about my "inexperience" regarding Rupes. From a Mike Phillips post in 2012 regarding pad stalling on DA Machines.

"Too little pressure - There's a quirky thing about these tools that if you hold the pad just right against the paint as though barely touching it the pad won't rotate like it does under pressure but more or less just flutter and even rotate backwards or counter-clockwise.

Too much pressure - If you apply too much pressure you can stop the pad from spinning, this is the safety characteristic that Newbies love and experience people forget about after they master the tool and then complain because the pad stops spinning.

Uneven pressure against pad - If you don't hold the pad flat to the surface, that is you hold the body of the tool in a way that pressure is greater to just an edge or side of the face of the pad you can easily stop the pad from spinning. This is more noticeable with larger pads like 6.5" and 7" pads as the larger the diameter the pad the more leverage the pad has over the spindler/drive mechanism.

Raised body line - If you're buffing on a raised body line there will be more pressure to smaller area of the face of the pad and this can be enough to stop or slow down the rotation of the pad.

Convex or Concave shaped body panel - Like a raised body line, if you're working on a convex or concave shaped body panel you can have more pressure to the outer edges of the pad or the inner portion of the pad and this can stop the pad from rotating or slow pad rotation down.

Too large a pad - When buffing with larger pads the larger diameter of the pad give the pad leverage over the spindle and this can stop pad rotating or slow pad rotation down.

Wet or saturated pad - When a pad becomes wet or saturated with product the combination of foam and liquid act to absorb and dissipate the energy coming out of the tool and this can stop or slow down the rotation of a pad."

Since you are a top detailer with the "special technique", it would be much appreciated if you could film it and post it here so I can see that technique and how you actually can accomplish pad rotation. As I said many times and have done 100s of hours of research on this issue, I have not seen any videos showing how to get around the above and have the pad not stall or slow down. Please post the special technique for all of us to see and then we can all then decide for ourselves the better machine.
 
Mmmm. Not quite.

There is a reason why you jewel paint with a straight drive circular polisher and not a free floating spindle large throw DA.

Mike, the difference between the 21 and 3401 when it comes to finishing (jet black) is huge. The forced rotation can and will chew up some finishes. I mean when you use a polish that doesn't hide.
 
congrats on the purchase, certainly no doubt that it is a very capable machine with very good build quality. enjoy it for many years to come!
 
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