I switched to a gear driven (or forced rotation) a while back, it has cut my polishing time probably in half and no more stalling out on complex curves. I rarely pick up the DA anymore, I mostly just use it for cleaning pads on the Lake Country 4000 Pad Washer. It sounds like a sales pitch but gear driven polishers really do give you the best of both worlds - cuts like a rotary, finishes like a DA (that is actually the sales pitch of the Dynabrade DB8 polisher that I use but it is an accurate assessment).
Same over here and I totally agree in the “sales” part. Tried a SPTA cordless forced rotation 4 months ago and for me it’s cutting more than the dual action ex620 from another Chinese manufacturer. And I work on hard German clear coat, not repainted. I must say that it’s still a “physical” machine for some people that struggles with shoulders or forearms.
Trying to make the different processes the same has given you a result, which has some meaning(?!) but I think what you need to do now is to just try and achieve the best result with each machine and see if theres a difference in result, that would be more real world. Time, pad and compound and even technique should be variables to achieve the best out come. Anyone with any experience will vary their technique and consumable depending on paint and final finish they want to achieve.
Worth noting for anyone watching that's new to this, Yvan recommends if you only have 1 tool, it should be a 15mm DA since it's a great "Jack of All Trades".
Yep, definitely. Its kind of the go to, less likely to have poor results. If you keep an eye on the heat levels on the panel, you can get awawith making silly mistakes as its more forgiving. Plus, that size covers a great deal more then a bigger machine.
I have tried so many times to fall in love with DA’s. Coming up with rotary, it’s hard for me to change. So with that being said, I’m hopelessly biased on rotary machines. I cut and finish on rotary and I don’t have hazing or holograms. Low speeds, no pressure, keep it flat … I mean, it takes practice and skill but it’s fairly straight forward. 😊😊😊
Interesting methods used. My thoughts are... in the attempt to standardize the process (speed, pad, polish, etc.) between the 2 machines, did that bias (or handicap) the results toward one of the machines? As you mentioned, there are way too many variables to come to any conclusion. An interesting follow-up would be to find the combinations that achieve the most gloss with each machine? Then, use those, now-established variables, swap the machines, and see what results you get then? I love it when you do this type of content! With so many great products out now and the differences between them, so minimal. Product "ranking" videos have become mostly irrelevant and beaten to death!
A very cool test, In practice, your test proves there's no difference in polishers using the same materials. It then becomes more of how your brain adapts to which ever machine works the best for your head to get around. I guess if you only ever used a forced rotation, then with experience, you'll have to nailed it until someone give you a DA or vice versa. It's best to check out the limitations with each type of polisher and think about which one you feel you're likely to get on with better if you're a beginner. Interesting results and a blood good point in case. This channel continues to focus on the thinking man or women. Top marks 👌
Seems like running the rotary at the lowest speed would have been more fair. The fact that a DA is unsuitable at those speeds is no reason to penalize the rotary. Poor low-speed operation is one of the fundamental drawbacks of the DA vs the rotary, so it seems like a variable that should be included.
not sure it would, we kind of ran it at a pretty sensible speed like speed 2.2 out of 6. The fact both sets of data matched suggested the polish has delivered its final finish. But you can always test more or change variables.
Jon, thanks for doing the test. To get the best results with a Rotary here is the system I’ve developed through decades of R&D. Slowest speed ( 400-800 rpm is ideal. No pressure, you’re going for gloss, not cutting by the time you get to the rotary. Clean, damp waffle pad, flat pads on the rotary favour hazing and the dreaded rotary swirls.
fair play but most of what your saying above is outside of the scope of this specific test. This test is more about, fix as many variables down as you can and compare the data for the 2 tools. As opposed to what technique achieves highest gloss. To study that with this machine you have to eventually start using RSPEC readings because the gloss will soft cap out with most good finishing polishes. Either way what Im not trying to do here is say that your categorically wrong in all circumstances. But this single test just leans towards the conclusion there is no significant measurable difference within the parameters shown..
@@leonnagy4538 yer your eyes can spot a GU difference of 0.2 nice one :) there is no real wrong technique we are not testing the DIY polishing method. But yer user error again lol.
Nicely done test! 👍 Any good test is just a comparator between two systems with one variable. For the test conditions, you showed there is no difference between DA and rotary with the same skilled operator. In reality, detailing a vehicle with either results in a very acceptable result from the viewpoint of the average vehicle owner. I guess the rotary though is just a little more risky in the hands of a novice. Correct?
Only enjoy the Rotary. The DA just doesn’t feel the right tool to hit that old paint. Maybe if was an expensive exotic be happy going slow on a DA. I go heavy into old paint. I lose Rotary.
not sure I get the quetion. but you would not do this test with gyeon primer because its a kind of ceramic primer glaze thing. So you are introducing a variable you dont need or want to introduce. And you would not use different polish each side in this test because it creates a huge variable (with a very important variable)
@ForensicDetailing if we just used a primer wont it put an end to the debate which machine puts out better gloss And minium haze as what i understand about primers is they are meant to deliver the perfect surface on finiky paints and obviously better adhesion for coatings
Watching your channel is like an adventure into the world of funny characters and hilarious situations. Keep making us happy with your funny videos!🌝🏂❤️
I switched to a gear driven (or forced rotation) a while back, it has cut my polishing time probably in half and no more stalling out on complex curves. I rarely pick up the DA anymore, I mostly just use it for cleaning pads on the Lake Country 4000 Pad Washer. It sounds like a sales pitch but gear driven polishers really do give you the best of both worlds - cuts like a rotary, finishes like a DA (that is actually the sales pitch of the Dynabrade DB8 polisher that I use but it is an accurate assessment).
Same over here and I totally agree in the “sales” part. Tried a SPTA cordless forced rotation 4 months ago and for me it’s cutting more than the dual action ex620 from another Chinese manufacturer. And I work on hard German clear coat, not repainted.
I must say that it’s still a “physical” machine for some people that struggles with shoulders or forearms.
Trying to make the different processes the same has given you a result, which has some meaning(?!) but I think what you need to do now is to just try and achieve the best result with each machine and see if theres a difference in result, that would be more real world. Time, pad and compound and even technique should be variables to achieve the best out come. Anyone with any experience will vary their technique and consumable depending on paint and final finish they want to achieve.
Worth noting for anyone watching that's new to this, Yvan recommends if you only have 1 tool, it should be a 15mm DA since it's a great "Jack of All Trades".
Yep, definitely. Its kind of the go to, less likely to have poor results. If you keep an eye on the heat levels on the panel, you can get awawith making silly mistakes as its more forgiving. Plus, that size covers a great deal more then a bigger machine.
Yvan always recommends his rotary polisher instead DA. U dont made a mistake?
@@NoFix no, he loves the rotary, especially for finishing. But if you only have 1 tool he recommends the 15mm DA, he's said it multiple times.
Brilliant video, thank you Jon.
You explain things in a way which anyone can understand, and even those with experience can learn something new.
I have tried so many times to fall in love with DA’s. Coming up with rotary, it’s hard for me to change. So with that being said, I’m hopelessly biased on rotary machines.
I cut and finish on rotary and I don’t have hazing or holograms. Low speeds, no pressure, keep it flat … I mean, it takes practice and skill but it’s fairly straight forward.
😊😊😊
Would love to see a mega test along these lines. Testing damp pad vs non-damp, rotary on speed 1 vs speed 3, 5 whatever.
Interesting methods used. My thoughts are... in the attempt to standardize the process (speed, pad, polish, etc.) between the 2 machines, did that bias (or handicap) the results toward one of the machines? As you mentioned, there are way too many variables to come to any conclusion. An interesting follow-up would be to find the combinations that achieve the most gloss with each machine? Then, use those, now-established variables, swap the machines, and see what results you get then?
I love it when you do this type of content! With so many great products out now and the differences between them, so minimal. Product "ranking" videos have become mostly irrelevant and beaten to death!
A very cool test, In practice, your test proves there's no difference in polishers using the same materials.
It then becomes more of how your brain adapts to which ever machine works the best for your head to get around.
I guess if you only ever used a forced rotation, then with experience, you'll have to nailed it until someone give you a DA or vice versa.
It's best to check out the limitations with each type of polisher and think about which one you feel you're likely to get on with better if you're a beginner.
Interesting results and a blood good point in case.
This channel continues to focus on the thinking man or women. Top marks 👌
Definitely right on the whole higher throw thing ive gotten vastly more haze from a 21mm to a 8mm using same conbo
Informative as always, thanks mate!
Seems like running the rotary at the lowest speed would have been more fair. The fact that a DA is unsuitable at those speeds is no reason to penalize the rotary. Poor low-speed operation is one of the fundamental drawbacks of the DA vs the rotary, so it seems like a variable that should be included.
not sure it would, we kind of ran it at a pretty sensible speed like speed 2.2 out of 6. The fact both sets of data matched suggested the polish has delivered its final finish. But you can always test more or change variables.
Yo Jon - hope all is well bud
man flu :( but its not too bad mate. mild headache bit achy.
Jon, thanks for doing the test. To get the best results with a Rotary here is the system I’ve developed through decades of R&D.
Slowest speed ( 400-800 rpm is ideal.
No pressure, you’re going for gloss, not cutting by the time you get to the rotary.
Clean, damp waffle pad, flat pads on the rotary favour hazing and the dreaded rotary swirls.
fair play but most of what your saying above is outside of the scope of this specific test. This test is more about, fix as many variables down as you can and compare the data for the 2 tools. As opposed to what technique achieves highest gloss. To study that with this machine you have to eventually start using RSPEC readings because the gloss will soft cap out with most good finishing polishes. Either way what Im not trying to do here is say that your categorically wrong in all circumstances. But this single test just leans towards the conclusion there is no significant measurable difference within the parameters shown..
@@ForensicDetailingthanks, was just wanting to point out best practices for your viewers who want to achieve the best results possible.
wrong technique wrong pad wrong rpm wrong polish wrong results 😀+ i have eyes i can see which side or panel is glossier
@@leonnagy4538 yer your eyes can spot a GU difference of 0.2 nice one :) there is no real wrong technique we are not testing the DIY polishing method. But yer user error again lol.
When looking for a Forced DA, what No Load Speed do we want to be looking for?
I really dont know that one sorry mate
Nicely done test! 👍
Any good test is just a comparator between two systems with one variable.
For the test conditions, you showed there is no difference between DA and rotary with the same skilled operator.
In reality, detailing a vehicle with either results in a very acceptable result from the viewpoint of the average vehicle owner.
I guess the rotary though is just a little more risky in the hands of a novice. Correct?
sounds good m8.
14:00 wow I didn’t know you could speak American! 😂
Ive learnt enough to get by :)
😂
Only enjoy the Rotary. The DA just doesn’t feel the right tool to hit that old paint. Maybe if was an expensive exotic be happy going slow on a DA. I go heavy into old paint. I lose Rotary.
Your test is not valid on glass, try doing it on varnish, the abrasives do not react in the same way on glass or on clear coat resin.
This test was done on a painted panel.
If we use Gyeon primer with da and just a polish with rotary wont it skew the results
not sure I get the quetion. but you would not do this test with gyeon primer because its a kind of ceramic primer glaze thing. So you are introducing a variable you dont need or want to introduce. And you would not use different polish each side in this test because it creates a huge variable (with a very important variable)
@ForensicDetailing if we just used a primer wont it put an end to the debate which machine puts out better gloss And minium haze as what i understand about primers is they are meant to deliver the perfect surface on finiky paints and obviously better adhesion for coatings
John yes point is correct you live in the UK .stop saying bloody dot your not American
Watching your channel is like an adventure into the world of funny characters and hilarious situations. Keep making us happy with your funny videos!🌝🏂❤️