Procharger put a CVT on a centrifugal supercharger - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Insert BS here A place to discuss anything you want

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 07-23-2013, 12:48 PM   #1
Elite Member
Thread Starter
iTrader: (1)
 
Join Date: May 2009
Location: Jacksonville, FL
Posts: 4,687
Total Cats: 216
Default Procharger put a CVT on a centrifugal supercharger

i-1 Supercharger





Expensive? Yes.
Complex? Yes.
Reliable? Who knows?
Better than the royal turbo? Maybe?
Attached Thumbnails
Procharger put a CVT on a centrifugal supercharger-8713d1351702571-procharger-programmable-ratio-supercharger-sema_2012_new_products_035.jpg  
Full_Tilt_Boogie is offline   Reply With Quote
Old 07-23-2013, 12:53 PM   #2
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,199
Total Cats: 2,584
Default

I'm honestly shocked this is a "new product" and just now being made. Just seems like a no-brainer that shoulda been developed ages ago.

In for results. Hopefully positive
18psi is offline   Reply With Quote
Old 07-23-2013, 12:55 PM   #3
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,640
Total Cats: 25
Default

Agreed. When i first saw a rotrex as a teenger this was my first thought.

Dann
nitrodann is offline   Reply With Quote
Old 07-23-2013, 12:59 PM   #4
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,199
Total Cats: 2,584
Default

Questions that arise at 1st glance:

is the cvt to multiply the rpm as it rises on the engine? meaning it starts off at slowest speed (the concern here would be overspinning the compressor like crazy)
or
is the cvt to increase rpm down low and decrease it up top? (resulting is a less pathetic lowend/midrange that these things usually put out, and no threat of overspinning)
18psi is offline   Reply With Quote
Old 07-23-2013, 01:02 PM   #5
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

so many betters. i honestly thought this was going to be the main idea/difference in the Rotrex when it was first talked about. When it turned out to just be another centrifugal SC I didnt understand why everyone here was ever excited about it.
Braineack is offline   Reply With Quote
Old 07-23-2013, 01:04 PM   #6
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

Quote:
Originally Posted by Full_Tilt_Boogie View Post
Better than the royal turbo? Maybe?
you're kidding right?
Braineack is offline   Reply With Quote
Old 07-23-2013, 01:07 PM   #7
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,199
Total Cats: 2,584
Default

nvm didn't see the link the 1st time around, just read up on it
18psi is offline   Reply With Quote
Old 07-23-2013, 01:08 PM   #8
Elite Member
Thread Starter
iTrader: (1)
 
Join Date: May 2009
Location: Jacksonville, FL
Posts: 4,687
Total Cats: 216
Default

Seriously. For years Ive been thinking "why doesnt someone slap a snowmobile CVT on a centrifugal compressor?"

18,
Its utilizing some kind of electronic control, so it could be as advanced as measuring boost, and maybe even compressor speed (optical or hall effect sensor perhaps?), and using that feedback to control speed.
But yes, at the most fundamental level, I believe it is running at a high ratio at low rpm, and then lowering the ratio as RPM increases, keeping the compressor speed constant.

Its like a backwards CVT

Quote:
Originally Posted by Braineack View Post
you're kidding right?
Im keeping an open mind

On one hand, the turbo isnt putting parasitic drag on the crank or adding inertia to the drivetrain, but on the other hand, without high pressure in the exhaust manifold, the supercharger will have better scavenging and allow for more aggressive tuning.
Im not sure how far these factors balance each other out.

Of course the turbo certainly wins when it comes to cost.
Full_Tilt_Boogie is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
MP62 maintenance Pist0n Supercharger Discussion 3 10-10-2015 05:23 PM
New M62 Miata owner Pist0n Meet and Greet 4 10-01-2015 09:18 PM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
another noob kr307 Meet and Greet 1 09-26-2015 11:33 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:56 PM.