bc3tech
November 6th, 2007, 4:14pm
Hopefully this gives the outgoing Redline/Cobalt a good amount of respect on the street before the new LNF Cobalt comes out.
This is certainly an interesting thread ... and one that I can shed some light on. My name is Ken Nunn & I am the General Manager of Harrop Engineering in Australia.
We manufacture superchargers - both twin-screw and Roots. We have been doing so for many years, and can say with a lot of confidence that the TVS-based supercharger is very impressive. We build TVS-based products for two OE-ish companies: TRD & Roush. Before choosing the TVS units, both companies did extensive & independant back-to-back testing which resulted in both companies being convinced that the new TVS-technology was worth the extra expense.
In the TRD test which I observed, the TVS1320 produced more boost at a lower temperature with less input power required (parasitic loss) than both the 1200 twin-screw and the Eaton 5th-gen M90. It was also quieter.
We have just completed the tooling for our generic TVS-based range of superchargers. The initial release is know as the HTV range (Harrop Twin Vorticies as TVS is an Eaton-specific trade-name (for Twin Vortices System)). It includes the HTV1320, HTV1900, HTV2300. All are availble in a range of mounting options and input-shaft lengths. We use the HTV2300 on Chev LS1/2/6/7 & L76/92/98 engines. The HTV2300 can support 1000+ HP on an LS7 ... as done by GM-Performance/TA-Engines in a Solstice!:nuts:
Also ... and the reason I have joined this forum ... is that we are currently completing the design of a HTV1320 bolt-on upgrade to replace the old M62. We have no intention of doing a "complete kit" (we will leave that to your local experts). Our solution is an HTV1320 supercharger that is a direct bolt-on replacement for the Cobalt SS M62. It has a pulley supplied on a hub for easy changing, and has the OE integral bypass assembly included.
It is our intention to have durabilty testing completed by Christmas, and the production release available in January. We are not a sponsor, so it would not be appropriate for me to indicate pricing or distribution ... but you guys can always make suggestions ;) :lol: :twothumbsup:
Video from SEMA at the Eaton booth about the TVS Blowers, notice a certain engine in said video? lol
http://www.nmratv.com/index.php?stream=http://www.streetlegaltv.com/video/sema07/20071101_SEMA_Eaton.flv&playlist=1
More info from http://www.ls1gto.com/forums/showthread.php?t=114669 :
...snip ... may be external differences, the rotors determine the basic parameters of the compressors, so any performance differences are not likely to be significant, as least from the compressors alone.
Well ... almost.
Although the rotor groups are all Eaton, we have found significant gains in performance by small tweaks in port profiles and the intergration of the bypass ports. As with all engineering projects, constant improvement is inevitable.
We have just released our next generation of H-series superchargers ... HH112 & HH122 are in production for the GTO now. The performance advantages over the M-series are considerable. We will post independant results within the next couple of weeks (as our customers send us their dyno sheets).
Harrop may very well be testing the TVS, I just haven't seen it or heard about it. I agree the pic of the TVS case displayed at Magnusons booth @ SEMA looks similar to Harrops current production stuff
We have been manufacturing TVS-series superchargers for a while now, but for OEM'ish companies. We have commenced design of a TVS2300 kit to suit the GTO using our generic TVS2300 supercharger. It will not be available until mid next year as we do a lot of durability testing before releasing new products. No matter how hard I try, I cannot get the 1000 hour test to take less than 1000 hours!
The performance of the TVS2300 is quite remarkable. It is spectacular!
I sincerely believe there will be a lot of twin-screw & turbo guys scratching their heads
ok so im kinda lost here, are we going to be seeing an affordable screw type charger or should i keep saving for a maggie?
The TVS is not a twin-screw ... it is not a compressor. It is still an "air pump", just a VERY efficent one.
The cost of manufacturing the TVS superchargers is definately higher than making M or H series, but still lots less than twin-screws. (We make them all).
Exciting times ahead ...
More information on Eaton's TVS line can be found here (http://www.eaton.com/EatonCom/ProductsServices/PerformanceProducts/Products/Superchargers/TVS/index.htm?ssSourceNodeId=5334&ssSourceSiteId=EatonCom)
This is certainly an interesting thread ... and one that I can shed some light on. My name is Ken Nunn & I am the General Manager of Harrop Engineering in Australia.
We manufacture superchargers - both twin-screw and Roots. We have been doing so for many years, and can say with a lot of confidence that the TVS-based supercharger is very impressive. We build TVS-based products for two OE-ish companies: TRD & Roush. Before choosing the TVS units, both companies did extensive & independant back-to-back testing which resulted in both companies being convinced that the new TVS-technology was worth the extra expense.
In the TRD test which I observed, the TVS1320 produced more boost at a lower temperature with less input power required (parasitic loss) than both the 1200 twin-screw and the Eaton 5th-gen M90. It was also quieter.
We have just completed the tooling for our generic TVS-based range of superchargers. The initial release is know as the HTV range (Harrop Twin Vorticies as TVS is an Eaton-specific trade-name (for Twin Vortices System)). It includes the HTV1320, HTV1900, HTV2300. All are availble in a range of mounting options and input-shaft lengths. We use the HTV2300 on Chev LS1/2/6/7 & L76/92/98 engines. The HTV2300 can support 1000+ HP on an LS7 ... as done by GM-Performance/TA-Engines in a Solstice!:nuts:
Also ... and the reason I have joined this forum ... is that we are currently completing the design of a HTV1320 bolt-on upgrade to replace the old M62. We have no intention of doing a "complete kit" (we will leave that to your local experts). Our solution is an HTV1320 supercharger that is a direct bolt-on replacement for the Cobalt SS M62. It has a pulley supplied on a hub for easy changing, and has the OE integral bypass assembly included.
It is our intention to have durabilty testing completed by Christmas, and the production release available in January. We are not a sponsor, so it would not be appropriate for me to indicate pricing or distribution ... but you guys can always make suggestions ;) :lol: :twothumbsup:
Video from SEMA at the Eaton booth about the TVS Blowers, notice a certain engine in said video? lol
http://www.nmratv.com/index.php?stream=http://www.streetlegaltv.com/video/sema07/20071101_SEMA_Eaton.flv&playlist=1
More info from http://www.ls1gto.com/forums/showthread.php?t=114669 :
...snip ... may be external differences, the rotors determine the basic parameters of the compressors, so any performance differences are not likely to be significant, as least from the compressors alone.
Well ... almost.
Although the rotor groups are all Eaton, we have found significant gains in performance by small tweaks in port profiles and the intergration of the bypass ports. As with all engineering projects, constant improvement is inevitable.
We have just released our next generation of H-series superchargers ... HH112 & HH122 are in production for the GTO now. The performance advantages over the M-series are considerable. We will post independant results within the next couple of weeks (as our customers send us their dyno sheets).
Harrop may very well be testing the TVS, I just haven't seen it or heard about it. I agree the pic of the TVS case displayed at Magnusons booth @ SEMA looks similar to Harrops current production stuff
We have been manufacturing TVS-series superchargers for a while now, but for OEM'ish companies. We have commenced design of a TVS2300 kit to suit the GTO using our generic TVS2300 supercharger. It will not be available until mid next year as we do a lot of durability testing before releasing new products. No matter how hard I try, I cannot get the 1000 hour test to take less than 1000 hours!
The performance of the TVS2300 is quite remarkable. It is spectacular!
I sincerely believe there will be a lot of twin-screw & turbo guys scratching their heads
ok so im kinda lost here, are we going to be seeing an affordable screw type charger or should i keep saving for a maggie?
The TVS is not a twin-screw ... it is not a compressor. It is still an "air pump", just a VERY efficent one.
The cost of manufacturing the TVS superchargers is definately higher than making M or H series, but still lots less than twin-screws. (We make them all).
Exciting times ahead ...
More information on Eaton's TVS line can be found here (http://www.eaton.com/EatonCom/ProductsServices/PerformanceProducts/Products/Superchargers/TVS/index.htm?ssSourceNodeId=5334&ssSourceSiteId=EatonCom)