Just used my Flex 3401 and Rupes MKII 15 back to back...

[WRAPT C5Z06]

Haven't had the MKII 15 for very long. Did a test spot on a door. Reached for my 3401 first equipped with an LC Force Orange pad. Went about the test spot and man, what A LOT of energy it took to control that thing! Results were good, however. Reached for my MarkII 15 next and tried a test spot on another door. WOW, the 15mm took WAY less energy than the 3401!! Needless to say, I finished the rest of he car with the 15mm. Yes, I had to pay attention to my technique more to limit stalling, but I was still pretty fresh after I finished the car. Will be reaching for my 15mm first from here on out.

[Joel1979]

Yeas,with Rupes you get faster results with less effot and fatigue. Do you have washed mod and What pad did you use with Rupes? 21mk is even faster correcting than 15.

[DaveT435]

Haven't had the MKII 15 for very long. Did a test spot on a door. Reached for my 3401 first equipped with an LC Force Orange pad. Went about the test spot and man, what A LOT of energy it took to control that thing! Results were good, however. Reached for my MarkII 15 next and tried a test spot on another door. WOW, the 15mm took WAY less energy than the 3401!! Needless to say, I finished the rest of he car with the 15mm. Yes, I had to pay attention to my technique more to limit stalling, but I was still pretty fresh after I finished the car. Will be reaching for my 15mm first from here on out.

It didn't take me long to sell my 3401 after getting my Griot's G21 and Rupes 15 Mark II. The Flex is a good machine, at my age, and the fact that I do this for pleasure, the 3401 wasn't for me.

Guys please don't turn this into another 3401 vs long throw thread. Everyone knows the 3401 is a good machine, it's just not for everyone.

[Cruzscarwash]

That's one of the reasons it's called "the beast" it definitely works you out.

The rupes was nice and smooth but in the end I like my BOSS Polishers better. Everyone has Thier preference but they are all great machines

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[fly07sti]

Say it isn't so Mark! I do agree with the Rupes being less taxing, but the 3401 just "feels" right to me.

[WRAPT C5Z06]

Yeas,with Rupes you get faster results with less effot and fatigue. Do you have washed mod and What pad did you use with Rupes? 21mk is even faster correcting than 15.

I used the 15mm with a BnS green foam pad. Yes, it’s softer than the orange force, but still, the 3401 is really a “beast” as Cruz said. I always use the washer mod.


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[WRAPT C5Z06]

Say it isn't so Mark! I do agree with the Rupes being less taxing, but the 3401 just "feels" right to me.

Don...LOL

I will never sell my 3401, but it sure is taxing.


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[Ronin47]

Long throws viz. Rupes MKII’s beat forced rotation in ease and speed of correction anyday. I own and use a variety of machines and theres no denying that. The 3401 is the more entertaining to use polisher though in smaller doses or softer paints with milder defects.

[Justin at Final Inspection]

Totally agree man. Put my 3401 on the back burner once I really started noticing how much more efficient and effective my g21 is.

[WRAPT C5Z06]

The 3401 is the more entertaining to use polisher on softer paints with milder defects.

Forced rotation DA doesn't finish nearly as well as any free spinning DA on soft paint.