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Super Member
Re: Rupes 15 vs Rupes 21 w/5" backing plate
I am not a high volume detailer, but I have the GG6 and the Rupes 15. I put a 3.5 inch backing plate on the GG and love the Rupes 15. The GG works very well, but it is loud and the shaft isn't as ergonomic as the Rupes (or Flex). I love the Rupes 15. If I were more high volume and needed more power to do jobs more quickly, I'd go with the 21 as well.
Perfection is attained by slow degrees; it requires the hand of time. (Voltaire)
2013 TESLA MODEL S | Gyeon Syncro | Gyeon Cancoat
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Super Member
Re: Rupes 15 vs Rupes 21 w/5" backing plate
Regarding the issues of using the 5 inch plate on the 21 and the 6 inch plate on 15, I asked Rupes about this some time ago. This was their response.
Hi Kevin,
about the back plate swapping, we allow (but not suggest) to use the 5” on the LHR21, you can have some more vibrations but we allow people doing this and the machine it’s still warranty covered. Instead, using the 6” on the LHR15 has not been technically tested so we cannot guarantee the proper functioning. Each machine is designed to work with its own back plate, so any changes could affect the performance and balance of the machine (dimensions and weights of back plates are different).
I hope I was clear in my explanation despite of my non perfect English!
Francesco Ginocchio
Marketing Manager
Perfection is attained by slow degrees; it requires the hand of time. (Voltaire)
2013 TESLA MODEL S | Gyeon Syncro | Gyeon Cancoat
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Super Member
Re: Rupes 15 vs Rupes 21 w/5" backing plate
My personal opinion and I'm not an expert but I feel like the 15 is obsolete. The 21 over all is better but if your worried about the price point using both Griots and 15 the griots is the better of the 2. Again IMO and solely based on my experience with both
Galatians 6:9And let us not grow weary of doing good, for in due season we will reap, if we do not give up.
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Super Member
Re: Rupes 15 vs Rupes 21 w/5" backing plate
Originally Posted by kevincwelch
Regarding the issues of using the 5 inch plate on the 21 and the 6 inch plate on 15, I asked Rupes about this some time ago. This was their response.
They also don't recommend the Kevin Brown washer mod or exact fit backing plate but following Kevin Brown's advise I use both with great results. Using the smaller bp on my 21 is the way I use my machine most of the time.
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Re: Rupes 15 vs Rupes 21 w/5" backing plate
Originally Posted by TopThatDetail
My personal opinion and I'm not an expert but I feel like the 15 is obsolete. The 21 over all is better but if your worried about the price point using both Griots and 15 the griots is the better of the 2. Again IMO and solely based on my experience with both
I agree the Griots is better with a deafening loud motor and jackhammer-like vibration.
There is vast amounts of knowledge at your fingertips, use Google, Youtube, and the search button.
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Super Member
Re: Rupes 15 vs Rupes 21 w/5" backing plate
I use my 21 with the KB mod and the OEM 6" bp, I did get the 5" bp and did that for a while, but didn't really much care for it.
So my 21 with a 6 bp with 6" or 6.5" pads.
If I want something smaller, then I just grab a different machine. I have a 2" 3" 5" and 6" and 7" bp's for whatever machine I am using.
I really disliked having to change bp's on my Rupes 21 from 6" to 5" or vice versa. Like I was saying, if I need something smaller, I just use a different machine.
However, the 21 with a 5" bp does get the job done and there is nothing wrong with using that method, but it's just not for me. Who knows, maybe one day, that will change?
I really do like the KB mod though.
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Thank you for all your replies everyone. After listening to both sides of the case, I've decided to buy a 21. Can't wait for it to arrive.
"I've seen a good quality car wash look better than some guys complete detail jobs."
Mike Phillips 10/21/09
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Super Member
Re: Rupes 15 vs Rupes 21 w/5" backing plate
21 +5 inch BP works great. And if you need speed add the 6BP for more accessibility.
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Super Member
Re: Rupes 15 vs Rupes 21 w/5" backing plate
Originally Posted by Evan.J
I have the 21 with a 5" backing Plate and I love it.
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Re: Rupes 15 vs Rupes 21 w/5" backing plate
I've used both but bought the 15 as it's smoother and easier to use on smaller cars - the 21 cuts more but the 15 finishes down better.
If I did a lot of vans or SUVs, then I probably would have got the 21.
The 6" BP can be used on the 15 but it's not officially supported (just like running the 5" BP on the 21, down here)
I'm only a weekend (and night time) warrior, though.
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