Flex 3401 or rupes bigfoot.

**fenderpicks** · 12-30-2012, 09:47 PM

Im getting my rupes next week...
I had past experience with the 3401... it kept walking on me.. so i didnt like it and i sold it....

Hopefully the rupes will be the one for me....

**Mike@DedicatedPerfection** · 12-30-2012, 11:17 PM

Originally Posted by ww2717

I could stop my lhr21 from rotating before the KB mod. After the KB mod I can't stop it even on setting 1.

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Why would you have to mod a brand new machine that was supposed to be well thought out but now you did something to make it work...

Originally Posted by Crazy Diamond

At this point in time it appears the flex is still leading the way!

Now people are modding the RUPES to make it work. Flex works right out of the box and has a more powerful motor... Thats a win in my book.

Originally Posted by fenderpicks

Im getting my rupes next week...
I had past experience with the 3401... it kept walking on me.. so i didnt like it and i sold it....

Hopefully the rupes will be the one for me....

Some people like it and others dont. What pads were you using with it?

**ww2717** · 12-30-2012, 11:33 PM

Rupes works really well with meguairs and optimum MF 6.25 " pads both cutting and polishing. Foam I have only used chemical guys hex logic 6" foam pads in orange, green ,gray and black. Compounds that have been used with the lhr21es so far are sonax Profilline Fine Abrasive Polish, Perfect Finish, Nano Polish, Menzerna FG400,SIP,106FA, PO85RD, Meguairs M101, M105,M205,D300 and D301.

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**fenderpicks** · 12-30-2012, 11:35 PM

I think i was mainly using flat pads and the lc ccs pads.
With 5" and 6"

**2old2change** · 12-30-2012, 11:47 PM

[QUOTE=smack;788128]Why would you have to mod a brand new machine that was supposed to be well thought out but now you did something to make it work...

Do you mean like switching to smaller bp's on the Flex to meet the various demands of detailing ?

**Mike@DedicatedPerfection** · 12-31-2012, 01:30 AM

Originally Posted by 2old2change

Do you mean like switching to smaller bp's on the Flex to meet the various demands of detailing ?

I wouldn't consider changing the BP a mod. You are adapting the tool to the task at hand. Now if you are doing anything more to the machine to modify its performance then that would be considered a mod in my book.

What is the KB mod on this machine anyways. I keep hearing about it but no info to support it???

**PorscheGuy997** · 12-31-2012, 01:46 AM

Originally Posted by smack

I wouldn't consider changing the BP a mod. You are adapting the tool to the task at hand. Now if you are doing anything more to the machine to modify its performance then that would be considered a mod in my book.

What is the KB mod on this machine anyways. I keep hearing about it but no info to support it???

Yup, it's a huge mod alright...in the same way lubricating the felt ring on a 3401 is a huge mod...

Originally Posted by Kevin Brown

Marco (the Rupes® engineer that developed the machine) explained that excessive rotation could cause scouring of the polishing surface if the backing plate and buffing pad were allowed to freewheel spin prior to contacting the polishing surface. He also mentioned that excessive rotation was considered to be a safety hazard in some parts of the world. Understanding his reasoning, I nevertheless decided to install a spacer between the backing plate and mounting pad in hopes of restoring a maximum amount of backing plate rotation.

With the spacer installed, backing plate rotation increased immensely. While I was not able to verify exactly how big an increase occurred in terms of backing plate rotation or cutting power, I can say that it was a LOT. My best guess: backing plate rotation increased to 10-14 times per second, and cutting speed increased by about 50 percent.

**ww2717** · 12-31-2012, 08:58 AM

The KB mod is extremely simple but highly effective mod. I want to see if the other mod of upgrading the onboard ASIC chip rom firmware has as KB mod does.

**fenderpicks** · 12-31-2012, 11:22 AM

I'm getting my rupes 15 this Thursday
Now is time to get rid of my pc7424xp and griot 6"

**2old2change** · 12-31-2012, 12:07 PM

At this time the market is being flooded with used da's from those switching to the Rupes. I view this as a win/win sitution for many. Especially those wanting to step up to a Flex or Griots but were looking for a bargin. For those moving to the Rupes their seems to be plenty of buyers seeking the used machines.