W2w
no, I am kind of wondering about they too, if you look at the pics on their site they look "strage" in that they dont look like the other superchargers that you see.
I would assume that they perform better or at least as well as the current superchargers systems that are out there, or W2W wouldnt be carrying them.
THe other thing that kind of has em confused is that they really only seem to be marketing the headunits, are there kits available??
Im sure we will hear from Kurt on monday if not sooner
ed
I would assume that they perform better or at least as well as the current superchargers systems that are out there, or W2W wouldnt be carrying them.
THe other thing that kind of has em confused is that they really only seem to be marketing the headunits, are there kits available??
Im sure we will hear from Kurt on monday if not sooner
ed
We are releasing a GM truck unit at SEMA. They are very quiet, nearly silent drive. They will make about 550hp at the flywheel. They should be perfect for someone who wants more power without additional noise. We had 5 cars on Power Tour this year, 4 had Rotrex blowers on them.
Also will have my twin Rotrex gen3 on display at SEMA. It has a 800rpm idle hyd roller cam for street use. It makes 950hp at the flywheel in preliminary testing. We will have a car on Power Tour with the twin blowers next year.
Kurt
Also will have my twin Rotrex gen3 on display at SEMA. It has a 800rpm idle hyd roller cam for street use. It makes 950hp at the flywheel in preliminary testing. We will have a car on Power Tour with the twin blowers next year.
Kurt
Kurt,
Are all the brackets custom made units? or are you going to be making kits as time permits?
I see that you said a truck kit is forthcomming, just wondering if you are going to be making/marketing kits for other applications.
where did these blowers come from, are they a new company or is it foregin?
Are all the brackets custom made units? or are you going to be making kits as time permits?
I see that you said a truck kit is forthcomming, just wondering if you are going to be making/marketing kits for other applications.
where did these blowers come from, are they a new company or is it foregin?
Staging Lane
Joined: Jul 2005
Posts: 83
Likes: 0
The Rotrex is a really nice concept in which compressor wheel speed runs 1.5-2X faster then ATI, Paxton or Vortech. This means compressor is in sweet spot (turbo-machinery likes to run fast/or 1200 ft/sec or faster). Form efficiency standpoint faster you can run wheel the happier it is and blade loading is reduced (a good think because pressure rise is better with lower loading).
The traction/friction is key to design! How is traction drive holding up?
Mike
The traction/friction is key to design! How is traction drive holding up?
Mike
The bracket is a casting for the gen3. We will be adding kits as time goes on. The next kit we are working on is the 5cyl H3/Colorado/Canyon.
The blowers are made in Denmark. They are used in Europe mostly. The smallest units are 5lbs with 150 total hp output for small 4 cyl engines.
Kurt
The blowers are made in Denmark. They are used in Europe mostly. The smallest units are 5lbs with 150 total hp output for small 4 cyl engines.
Kurt
The traction drive is holding up well. The stepper ratio in the larger units is 7.5-1 and the shaft speed on my twin is 90,000rpm.
There is another new gearbox design we are testing now that will be interesting for the sc. It is a transmission built into the front of the head unit that steps up the drive speed an additional 1.4-1 at low speeds, then automaticly switches to 1-1 as rpm increases so as to not overspeed the blower. Gives a more linear boost curve to increase low end torque production.
Kurt
There is another new gearbox design we are testing now that will be interesting for the sc. It is a transmission built into the front of the head unit that steps up the drive speed an additional 1.4-1 at low speeds, then automaticly switches to 1-1 as rpm increases so as to not overspeed the blower. Gives a more linear boost curve to increase low end torque production.
Kurt
Originally Posted by Skunkworks
The Rotrex is a really nice concept in which compressor wheel speed runs 1.5-2X faster then ATI, Paxton or Vortech. This means compressor is in sweet spot (turbo-machinery likes to run fast/or 1200 ft/sec or faster). Form efficiency standpoint faster you can run wheel the happier it is and blade loading is reduced (a good think because pressure rise is better with lower loading).
The traction/friction is key to design! How is traction drive holding up?
Mike
The traction/friction is key to design! How is traction drive holding up?
Mike
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Staging Lane
Joined: Jul 2005
Posts: 83
Likes: 0
Originally Posted by 427
The traction drive is holding up well. The stepper ratio in the larger units is 7.5-1 and the shaft speed on my twin is 90,000rpm.
There is another new gearbox design we are testing now that will be interesting for the sc. It is a transmission built into the front of the head unit that steps up the drive speed an additional 1.4-1 at low speeds, then automaticly switches to 1-1 as rpm increases so as to not overspeed the blower. Gives a more linear boost curve to increase low end torque production.
Kurt
There is another new gearbox design we are testing now that will be interesting for the sc. It is a transmission built into the front of the head unit that steps up the drive speed an additional 1.4-1 at low speeds, then automaticly switches to 1-1 as rpm increases so as to not overspeed the blower. Gives a more linear boost curve to increase low end torque production.
Kurt
Mike
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Verdad Gallardo What blower did you have the trans on? As long as the shaft does not drop below 1-1 the pressure will just return to non transmission psi. That step is why the ratio is kept down to 1.4-1, now if we could package a 3 speed!!
Kurt
Kurt
Originally Posted by Skunkworks
Damn, I had the 2 speed supercharger concept 3 years ago! I just don’t know without some sort of external pressure regulation you are not going to notice pressure drop. I know they have a built in pump by input shaft and can conceivably clamp onto different rollers to create 2-speed transmission, but understanding centrifugal compressors you will see a pressure dip when changing step-up ratios.
Mike
Mike
Staging Lane
Joined: Jul 2005
Posts: 83
Likes: 0
Originally Posted by 427
What blower did you have the trans on? As long as the shaft does not drop below 1-1 the pressure will just return to non transmission psi. That step is why the ratio is kept down to 1.4-1, now if we could package a 3 speed!!
Kurt
Kurt
Mike
TECH Addict
Joined: Aug 2004
Posts: 2,866
Likes: 4
got any pics of the twin Rotex set up yet 427????
these things where used on the fastest prodution car ever (unitl the veryon came out) that was the Koenigsegg CCR at 242+mph!again they used a twin rotex setup to make over 800bhp on a Ford 4.6!
thanks Chris.
these things where used on the fastest prodution car ever (unitl the veryon came out) that was the Koenigsegg CCR at 242+mph!again they used a twin rotex setup to make over 800bhp on a Ford 4.6!
thanks Chris.
LS1TECH Sponsor
Joined: Nov 2004
Posts: 344
Likes: 0
From: Michigan
Originally Posted by icen
any idea if this would work on the 4.2L I6.....
With a single C-38 you can make 550
The bracket shown will only work on the Gen3 engine platform.
Staging Lane
Joined: Mar 2004
Posts: 74
Likes: 0
From: Austin, TX
Originally Posted by Kev@WheeltoWheel
That would depend on your horsepower goals. The goal with the twin project is 1000 horsepower.
With a single C-38 you can make 550
The bracket shown will only work on the Gen3 engine platform.
With a single C-38 you can make 550
The bracket shown will only work on the Gen3 engine platform.
I cant wiat to see waht the top of that engine looks like. Seems odd that they had to make a seperate pulley to apply pressure to teh belt so taht it makes contact with the waterpump. I would imagine that a electic pump woudl be the better choice. GL
John
John
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Joined: Nov 2001
Posts: 4,857
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From: Austin, TX
I was thinking after looking at that picture that 1/2" of contact on the WP pulley is crazy. We probably can't see if from the angle used, but what we are seeing is likely forward of the standard accessory drive and any factory belts can still be used with some slight adjustments. But then I look again and I don't know where you'd put the alt, PS, and A/C belts...???
The blower belt only turns the blowers. The picture is from a angle that makes it look closer then it is. The std belt line is still there. The AC runs off the standard pulley behind the standard beltline. In the picture, the accy belt is not on. It is a display engine.
Kurt
Kurt
Originally Posted by RyanJ
I was thinking after looking at that picture that 1/2" of contact on the WP pulley is crazy. We probably can't see if from the angle used, but what we are seeing is likely forward of the standard accessory drive and any factory belts can still be used with some slight adjustments. But then I look again and I don't know where you'd put the alt, PS, and A/C belts...???
