Heijneker Posted December 1, 2021 Share Posted December 1, 2021 I thought I'd do a little comparision between the RUPES LHR21 MKiii and the Zentool 21E2. Not alot can be found on the Zentool 21E2, nothing like the Rupes. Bear in mind, I haven't actually used the RUPES yet, while the Zentool has seen about 50 cars by now. It's getting abused as well.... I've only cleaned it once, even the air in-/outlets. But it's still going strong! I decided I wanted to try the RUPES LHR21 MKiii, so I bought one (at more than double the price of the Zentool 🤐). I was crazy excited to get my first RUPES, thinking it would be vast improvement over the Zentool (even though I was very happy with the Zentool). So let's see if I was right! Price I got the Zentool from The Rag Company Europe through their business program. It cost me €260, and came with spare carbon brushes and in a box. The RUPES I bought through another retailer at the price of €639, yikes haha. It was the LUX-version though, which came with a nice bag and lots of goodies. Without the goodies it would have been €489. No spare carbon brushes though, but an allen Key for the backing plate. A definite win for the Zentool. Quality To me, the Zentool has the nicer case moulding. Sometimes I need to grab the center section of the polisher, which is a more ergonomic shape on the Zentool. I do like RUPES' materials more though, and it looks sexier as well. The speed dial on the RUPES is WAY better, since it's bigger. It means I can use anti-vibration gloves on the RUPES but not on the Zentool. Rupes speed dial Zentool speed dial The Rupes also has a gas pedal trigger, which I like, but the Zentool starts at a way lower speed than the RUPES (2000 vs 3000 on the RUPES). So it definitley needs it. 2000 OPM Is the perfect speed to use with the Lake Country Pad washer 4000. The RUPES' variable trigger doesn't really modulate very well in use. And also, it sometimes doesn't work. If I let go of the trigger and pull it again to quickly, it doesn't work. I then have to wait for the machine to slow down all the way before I can use it again. On my FLEX XFE 7-15 the variable trigger doesn't have that problem and worked great! Zentool speed range Rupes speed range The backing plate on the RUPES is way nicer and holds the pads better, I feel the Zentool one doesn't grip the pads as well. It has let go of pads for me when spinning pads to dry. All my OPT ones have become unusable as a result. As a whole, the RUPES feels like the higher quality polisher. Deciding factor being that the Zentool has a bit of play on the axis, causing a clanking noise of you move it and hold it. The RUPES is tight. Pad rotation The Zentool has great pad rotation, at least when in use. On flat panels, I can run it at Speed 2 without pad stall, and if I turn it up to 3, it basically nevers stalls. When turning the pad by hand though, it's not as free spinning as my FLEX XFE 7-15, but in use, the FLEX stalls much easier. Then there's the RUPES.... I can see why people perform the 'washer mod' straight away. There's no pad rotation whatsoever lol, definately not by hand, even when free spinning it doesn't rotate before speed 2. However, the Rupes is supposed to get better over time, as the dust shroud, which drags over the backing plate wears down. I would guess this is a better design compared to the Zentool one, which has a big gap beteen the shroud and backing plate, more easily letting in debree. Zentool dust shroud: RUPES dust shroud: If I lift up the dust shroud on the RUPES (sort of possible) so there is a gap, the RUPES has the far better pad rotation. So I'm thinking, with use, the RUPES pad rotation will match or exceed that of the Zentool, with a better dust shroud design to boot. Noise An important one to me, up front I figured the RUPES wouls win this! In a very unsientific way, I put my phone down at a certain distance and opened a dB-meter app. I then got each polisher in hand, and ran at speed 3. The RUPES ran at 85 dB average, the Zentool 81 dB. A win for the Zentool, I can use it for extended periods of time withouth hearing protection. In practice I do use hearing protection though, because why not. The RUPES I won't be able to use for long without hearing protection, that's too bad! The noise it eminates is also a more unpleasent pitched one, a bit like gears grinding. Don't know how to desribe it. The Zentool sounds smooth! Vibration The most important one to me! Recently, the Zentool had begun to vibrate A LOT for me. I was getting sick of it! This made me want the RUPES, since this would definitly be better, right? I even use mostly RUPES pads, so couldn't be better right? Well..... I got the RUPES and Zentool side by side, and to my surprise, the Zentool felt smoother??? It actually felt crazy smooth. So in another very ubscientific test, I opened the Vibrometer app on my phone and pushed it tight on each polisher as I ran it on speed 3. The result were pretty shocking: RUPES vibration: Zentool vibration: What the heck??? On both polisher I placed the pad (RUPES whool) as centred as I could. The Zentool is WAY more balanced?? Turns out, the pad I was using before, was what caused the terrible vibration. Once I used a new pad, it was a breeze! It's a good thing the RUPES has the big speed dial, because compared to the Zentool, I'm gonna need the Anti-vibration gloves! A big win for Zentool! Conclusion In my opinion, a definite win for the Zentool. Crazy how a used and abused Zentool wins from a brand new RUPES? It's cheaper and runs better. I didn't expect that really. I'm going to use the RUPES and see if it beds in or something, maybe than it will get nicer. I would like to see some improvements on the Zentool, namely a larger Speed Dial, different casing materials and a better backing plate. Oh and a variable trigger that works! LostVulpine 1 Quote Link to comment Share on other sites More sharing options...
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