GTM Performance Engineering: Stage 1 Supercharger Upgrade Kit 500whp capable

Mike@GTM · 02-25-2012, 02:01 PM

Quote:

Originally Posted by phunk

damn that is some really good output to get out of a clean fit supercharger kit.

well done.

Thank you! I'm happy we were able to pull this off and really show just how impressive the Rotrex units really are. Of all the supercharger units we've ever worked with, Rotrex makes the best ones, hands down. I'm really surprised that they have such low market penetration here in the US. It seems people in general are very resistant to progress and technological advances. Too bad, really...they're missing out. lol

sylenze · 03-07-2012, 10:59 AM

Quote:

Originally Posted by Mike@GTM

Thank you! I'm happy we were able to pull this off and really show just how impressive the Rotrex units really are. Of all the supercharger units we've ever worked with, Rotrex makes the best ones, hands down. I'm really surprised that they have such low market penetration here in the US. It seems people in general are very resistant to progress and technological advances. Too bad, really...they're missing out. lol

Hey Mike and Sam, since you guys are pioneering SC kits for us... i was wondering if you guys have thought off adding some kind of CVT on the rotrex unit to control/maximize boost...

Mike@GTM · 03-07-2012, 05:13 PM

Quote:

Originally Posted by sylenze

Hey Mike and Sam, since you guys are pioneering SC kits for us... i was wondering if you guys have thought off adding some kind of CVT on the rotrex unit to control/maximize boost...

Back when I first learned of CVT's, a supercharger was my first thought for an off the wall, awesome application.

Unfortunately, CVT's are expensive. They're also not super lightweight either. Controlling one is also complicated. Complication adds more cost (as well as more things to go wrong).

Therefore, adding a CVT system to a supercharger is going to be heavy, expensive, complex and while it will give you a broader powerband, the cost/benefit ratio doesn't pencil out.

All that said, however, Rotrex is working with another company to develop a compact solution to do exactly what you and I both want. The key difference between what they're doing and simply adding CVT, is that the variable drive ratio will be integrated into the supercharger unit itself. By fully integrating that inside the casing, it will be light, efficient, compact, and more cost-effective. Don't hold your breath though, the R&D on that has been going on for two years now, and there hasn't been a word on any progress. It may end up that it the cost/benefit ratio isn't worth following through though.

Nixlimited · 03-07-2012, 06:25 PM

Quote:

Originally Posted by Mike@GTM

Back when I first learned of CVT's, a supercharger was my first thought for an off the wall, awesome application.

Unfortunately, CVT's are expensive. They're also not super lightweight either. Controlling one is also complicated. Complication adds more cost (as well as more things to go wrong).

Therefore, adding a CVT system to a supercharger is going to be heavy, expensive, complex and while it will give you a broader powerband, the cost/benefit ratio doesn't pencil out.

All that said, however, Rotrex is working with another company to develop a compact solution to do exactly what you and I both want. The key difference between what they're doing and simply adding CVT, is that the variable drive ratio will be integrated into the supercharger unit itself. By fully integrating that inside the casing, it will be light, efficient, compact, and more cost-effective. Don't hold your breath though, the R&D on that has been going on for two years now, and there hasn't been a word on any progress. It may end up that it the cost/benefit ratio isn't worth following through though.

There are already several companies that have done this with superchargers, but I believe they are for more industrial applications. I have thought about this quite a bit and like you mention, a major issue is efficiency in packaging.

sylenze · 03-09-2012, 01:46 PM

Quote:

Originally Posted by Mike@GTM

All that said, however, Rotrex is working with another company to develop a compact solution to do exactly what you and I both want. The key difference between what they're doing and simply adding CVT, is that the variable drive ratio will be integrated into the supercharger unit itself. By fully integrating that inside the casing, it will be light, efficient, compact, and more cost-effective. Don't hold your breath though, the R&D on that has been going on for two years now, and there hasn't been a word on any progress. It may end up that it the cost/benefit ratio isn't worth following through though.

i've heard of rotrex doing a joint venture with torotrak to figure this piece out before... actually the youtube videos of the concept they are working on, makes me wonder if you have more information on their progress... because it looks like to me that the design for the GTM stage 1.5/2 SC kit is perfect for upgrading the sc to whatever rotrex SC unit with the built in variable drive they come up with... in any case... pretty exciting stuff...

Variable drive supercharger Rotrak (Part 2) - YouTube

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