Kraftwerks K-Race Kit buildup (Rotrex-charged)

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Old May 11, 2009 | 04:43 PM
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Default Kraftwerks K-Race Kit buildup (Rotrex-charged)

The Skunk2 sponsored Sportcar Motion Time Attack EG Civic gets Kraftwerks supercharged. Read the article here. We'll have dyno info soon

http://cms.skunk2.com/id/178/title/
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Old May 11, 2009 | 06:39 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

looks nice, update us with some numbers
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Old May 11, 2009 | 06:46 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

why dont you take some time and make a post with some technical info rather then just post a link to your site to push a new product.
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Old May 11, 2009 | 08:58 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Very cool product.
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Old May 11, 2009 | 09:02 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

nice
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Old May 11, 2009 | 09:17 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Originally Posted by miller
why dont you take some time and make a post with some technical info rather then just post a link to your site to push a new product.
Stop being a hater.....
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Old May 11, 2009 | 09:38 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Originally Posted by miller
why dont you take some time and make a post with some technical info rather then just post a link to your site to push a new product.
Originally Posted by SD_Lurker
Stop being a hater.....
Miller does have a point although it is nice to see products you wouldn't otherwise see. I guess, i'm not really sure how to take this one...
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Old May 11, 2009 | 10:17 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

it would be nice to know a little more about the rotrex superchargers. I read that the new Jackson racing is carrying these and providing kits starting with K-series. a little more tech and less promoting I guess that's what miller is hinting at. I fully understand that. this should be placed in Appearance build threads.
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Old May 11, 2009 | 11:06 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

I just hate the approach by creating a new thread with a one liner post... Such a spam-like post...
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Old May 12, 2009 | 04:12 AM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

^^I have to agree
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Old May 12, 2009 | 05:11 AM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Originally Posted by SD_Lurker
Stop being a hater.....
Look who is talking. LOL
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Old May 12, 2009 | 08:57 AM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Totally understand. Sorry guys...just trying to get the info up.

Here's a view of some of the pics, but there is more info in each pic in the article viewer.









Rotrex is the leading manufacturer of high speed traction drives. The patented planetary drive allows speeds up to 250,000rpm offering high efficiency, compactness, reliability and silent operation.

Key to the Rotrex supercharger's unique compactness, efficiency, low noise and reliability is its state of the art traction drive technology.
Great speeds and low noise are just some of the advantages of traction drives over traditional gear transmissions. Traction drives transmit power through friction forces between its rolling elements. The Rotrex patented traction drive uses an elastic annulus with a small pre-span to secure contact between the roller planets and the sun shaft with a reasonable force. The patented "ramp effect" increases efficiency and reliability in the transmission by regulating the torque transfer capability on demand through self-adjusting planet geometry. To enhance performance, the Rotrex traction drive uses a special traction fluid. These fluids are a new family of synthetic hydrocarbon oils and greases offering a series of unique performance advantages. Developed specially for its use in Rotrex superchargers, the SX100 momentarily increases viscosity under high surface pressure, enhancing the traction drive performance by securing the optimum friction between rolling elements while cooling and protecting the system. This traction drive combined with the latest technology in centrifugal compression, characterized by high adiabatic efficiency and low noise, gives Rotrex superchargers an exceptional competitive edge over any other forced induction solution.

Here's a link to an article about Modified Mag covering the technology http://cms.kraftwerksusa.com/id/23/M...t-is-a-Rotrex/

Here is a link to the tech sheet for the Rotrex C38 Charger http://www.rotrex.com/pdfs/Rotrex_Te...Range_V4.0.pdf

Last edited by skunk2.com; May 12, 2009 at 09:02 AM.
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Old May 12, 2009 | 09:37 AM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

so, theoretically, you could take a similar design, adapt to a b-series block, potentially by removing the air conditioning compressor unit and run it in a similar fashion?
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Old May 12, 2009 | 10:54 AM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Originally Posted by Turbocivic94
Look who is talking. LOL
Get off my n..ts patna...
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Old May 12, 2009 | 01:01 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

I really like this setup. Its clean looking. I've never been a supercharger guy, but i could see rocking this. Are there any dyno graphs of it?
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Old May 12, 2009 | 01:36 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Originally Posted by miller
why dont you take some time and make a post with some technical info rather then just post a link to your site to push a new product.
hasn't this thing been around for a year or so??

here is a dyno of a k20a3 (completly internally stock)

Name:  jerrysrun.jpg
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15psi

(just saw the dyno on another site have absolutely no affiliation to any of this stuff.)
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Old May 12, 2009 | 06:24 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Originally Posted by slammed_93_hatch
hasn't this thing been around for a year or so??

here is a dyno of a k20a3 (completly internally stock)



15psi

(just saw the dyno on another site have absolutely no affiliation to any of this stuff.)
If I'm thinking correctly, Steve @ StickerGuy just tuned that the other day..
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Old May 13, 2009 | 12:14 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Originally Posted by a1320addict
If I'm thinking correctly, Steve @ StickerGuy just tuned that the other day..
Thanks guys I tuned this the other day and its a k20z3 engine in an EP3 chassis running 15psi! I was skeptical about this kit but was rather impressed.
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Old May 13, 2009 | 12:34 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

just run a small turbo like a GT28RS if you really need spool time.
superchargers are a waste of money IMO.
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Old May 13, 2009 | 12:43 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Originally Posted by marcj
just run a small turbo like a GT28RS if you really need spool time.
superchargers are a waste of money IMO.
I thought the same way but this thing really impressed me! Dont knock it until you try it! Dont be close minded there will be better as technology evolves!
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Old May 13, 2009 | 02:09 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

turning another pulley is parasitic drag on the motor. forced induction technology is in variable geometry turbos that adjust the housing volume in real-time for better response and high output.
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Old May 13, 2009 | 05:48 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

...fun fun fun on the autobahn
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Old May 13, 2009 | 07:28 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

I really am digging these kits. I have read about these about a year ago, but have no provisions for the B series crowd. Although, it looks to be a couple of CNC'd mounts and test fitments to a B-series and your set. the output of these rotrex turbo chargers amazes me. definately something to look into.
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Old May 13, 2009 | 09:17 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Originally Posted by sgnlab
Dont be close minded there will be better as technology evolves!
Technology already has evolved - but some people refuse to look at the Eaton website, for instance. Especially for the K, you can run all sorts of evolved roots or twin-screw SC's. The Rotrex is just a centrifugal SC with a "special" drive that apprears to be used to hype the product more than anything. At the end of the day, it has all the main issues a centrifugal SC has. Most of its benifits go out the window when you put it on a dedicated track car.

I'm not hating the car - it looks very nice, just like any other EG hatch racer - just the SC choice. I guess on a track car with a very short tranny it doesn't matter much, since you can afford to always keep it w/in 2k of redline. IMO a cetrifugal SC doesn't belong on a Honda 99.9% of the time.
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Old May 14, 2009 | 03:07 PM
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Default Re: Kraftwerks K-Race Kit buildup (Rotrex-charged)

Originally Posted by HiProfile
Technology already has evolved - but some people refuse to look at the Eaton website, for instance. Especially for the K, you can run all sorts of evolved roots or twin-screw SC's. The Rotrex is just a centrifugal SC with a "special" drive that apprears to be used to hype the product more than anything. At the end of the day, it has all the main issues a centrifugal SC has. Most of its benifits go out the window when you put it on a dedicated track car.

I'm not hating the car - it looks very nice, just like any other EG hatch racer - just the SC choice. I guess on a track car with a very short tranny it doesn't matter much, since you can afford to always keep it w/in 2k of redline. IMO a cetrifugal SC doesn't belong on a Honda 99.9% of the time.
Oscar Jackson used Eaton superchargers for over 17yrs with good results. But Eaton's, by design, produce huge volumes of heat whether on the track or street. But this heat is especially bad for track use. That's why Oscar Sr went in search of a superior compressor that didn't have the inherent problems related to all current centrifugals, the reliability issues related to screw superchargers or the heat issues of the roots superchargers.

The high overdrive ratio that Rotrex has designed into its drive and patented allows it a broad range of power. This high overdrive also provides high shaft speeds so that a conventional high efficient turbo sized/style compressor can be used instead of the huge inefficient compressors used on most other centrifugals. This design makes the Rotrex the "ideal" compressor for track use with a broad, always growing, powerband with low output temperatures.

Oscar Sr's thought process was highly questioned in 1995 when he first introduced the Eaton supercharger to the Honda aftermarket. So it comes as no surprise that his thought process would be questioned again with his move to a newer, modern, more efficient Rotrex centrifugal supercharger. Oscar Sr had a vast array of compressors to pick from over the years but he stayed with the Eaton until he found something better. The success of the Kraftwerks/Rotrex combination is becoming more and more obvious as one by one Rotrex powered cars dominate race tracks and magazine tests.

Recently Kraftwerks debuted their new Miata supercharger kit at the 20th Anniversary celebration of the Miata at Laguna Seca. Not only did the Kraftwerks powered Miata beat all other competitors (including some of his Eaton powered kits) it dominated with lap times more than a second faster than turbo cars with twice as much boost. "(Add the Charles Ng quote here) about how easy the Rotrex is to drive at the limit.

There many good compressors available today, including the newer Eatons, but Oscar Sr believes he has found the key to performance for the next 17yrs and he believes the Rotrex, just like the Eaton he debutted in 1995, is the key to these new high efficiency engines.
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