SC kits with magnetic clutch?

raywong · 10-06-2012, 08:57 AM

How do the M3 SC engage/disengage? using a magnetic clutch? Or are they driven by the belt full time?

ajohnson300 · 10-06-2012, 09:41 AM

Great question man, but here is the deal. With the magnetic clutch, the clutch assembly freely spins until power is sent to the magnets, which energize causing the clutch gears to engage. Without the power, the clutch assembly is free to spin, which does not rob or require power. But under load the signal is sent, the assembly engages and now the supercharger spins. You are aware that superchargers require power to make power, so this is why so many lean towards turbos because they don't. They make power from exhaust which was being expelled anyway. But most superchargers are very reliable which is a sell for some. To recap, the gears spin freely until engaged, they are belt driven but are not always on. Hope this helps.

VCP · 10-06-2012, 10:35 AM

All the SC kits out are spinning the charger 100% of the time. The only company I think that has an option for a SC disengage clutch is g-power. Hope this helps

raywong · 10-06-2012, 12:12 PM

I guess being able to disengage is not that important otherwise the Ess systems will have it too.

edwinm3 · 10-06-2012, 02:23 PM

ASA blowers use a centrifugal clutch. They're very good and it's what I had on my e46. Don't think anybody is using them on E9X applications. Very good and expensive. Torque you feel at low rpms

Sean@PSI · 10-06-2012, 02:30 PM

Quote:

Originally Posted by edwinm3

ASA blowers use a centrifugal clutch. They're very good and it's what I had on my e46. Don't think anybody is using them on E9X applications. Very good and expensive. Torque you feel at low rpms

G-Power, who exclusively uses ASA superchargers, retain the centrifugal clutch on all their current supercharger kits; including the E9X M3 kits.

I'll grab a picture of an install we're doing at the shop and take the pulley off the blower to show some detail.

spdy330 · 10-06-2012, 05:33 PM

Subscribed

pbonsalb · 10-06-2012, 05:40 PM

Does the ASA clutch disengage only at idle speed or does it disengage anytime the blower is out of boost?

pbonsalb · 10-06-2012, 05:41 PM

Quote:

Originally Posted by raywong

I guess being able to disengage is not that important otherwise the Ess systems will have it too.

ESS used to run the ASA blowers. I thhnk they changed more for simplicity of having one blower to use for all kits than out of any dislike of the ASA. Also ASA at the time did not have any really high flowing blowers.

edwinm3 · 10-08-2012, 07:39 PM

Quote:

Originally Posted by Frank@PSI

G-Power, who exclusively uses ASA superchargers, retain the centrifugal clutch on all their current supercharger kits; including the E9X M3 kits.

I'll grab a picture of an install we're doing at the shop and take the pulley off the blower to show some detail.

That is cool, ASA blowers are very good. I loved my AA kit on my E46 M3.

edwinm3 · 10-08-2012, 07:42 PM

ASA blowers give you good torque down low, it feels like a turbo. Blowers are a bit pricey, maybe that's why ESS guys are not using them anymore idk

DouglaCorbi · 10-08-2012, 08:01 PM

The only company I think that has an option for a SC disengage clutch is g-power

Sean@PSI · 10-08-2012, 08:17 PM

Quote:

Originally Posted by pbonsalb

Does the ASA clutch disengage only at idle speed or does it disengage anytime the blower is out of boost?

Only at idle speed, I believe.

edwinm3 · 10-09-2012, 03:29 AM

Quote:

Originally Posted by Frank@PSI

Quote:

Originally Posted by pbonsalb

Does the ASA clutch disengage only at idle speed or does it disengage anytime the blower is out of boost?

Only at idle speed, I believe.

You're correct

mosx · 10-09-2012, 03:47 PM

I've never heard of G-Power. How do their prices compare to ESS or the others?

10-06-2012, 08:57 AM	#1
raywong Private First Class 42 Rep 132 Posts Drives: E92M3 Join Date: Jun 2011 Location: Hong Kong iTrader: (0)	SC kits with magnetic clutch? How do the M3 SC engage/disengage? using a magnetic clutch? Or are they driven by the belt full time?
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10-06-2012, 09:41 AM	#2
ajohnson300 Abjm3 8 Rep 132 Posts Drives: 2012 X5M, 2010 Nissan GTR Join Date: Mar 2011 Location: Watervliet, NY iTrader: (3)	Great question man, but here is the deal. With the magnetic clutch, the clutch assembly freely spins until power is sent to the magnets, which energize causing the clutch gears to engage. Without the power, the clutch assembly is free to spin, which does not rob or require power. But under load the signal is sent, the assembly engages and now the supercharger spins. You are aware that superchargers require power to make power, so this is why so many lean towards turbos because they don't. They make power from exhaust which was being expelled anyway. But most superchargers are very reliable which is a sell for some. To recap, the gears spin freely until engaged, they are belt driven but are not always on. Hope this helps.
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10-06-2012, 10:35 AM	#3
VCP Colonel 1390 Rep 2,336 Posts Drives: M4GTS BSM/F90comp/BSM M2CS Join Date: Mar 2011 Location: Canada iTrader: (0)	All the SC kits out are spinning the charger 100% of the time. The only company I think that has an option for a SC disengage clutch is g-power. Hope this helps
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10-06-2012, 12:12 PM	#4
raywong Private First Class 42 Rep 132 Posts Drives: E92M3 Join Date: Jun 2011 Location: Hong Kong iTrader: (0)	I guess being able to disengage is not that important otherwise the Ess systems will have it too.
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10-06-2012, 02:23 PM	#5
edwinm3 Brigadier General 980 Rep 4,001 Posts Drives: F82 Join Date: Nov 2011 Location: Broward iTrader: (32)	ASA blowers use a centrifugal clutch. They're very good and it's what I had on my e46. Don't think anybody is using them on E9X applications. Very good and expensive. Torque you feel at low rpms __________________ Grigio Telesto M4, 6MT. Coyote 5.0 F-150 991 GT3
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10-06-2012, 05:33 PM	#7
spdy330 Major General 530 Rep 6,149 Posts Drives: 05 Tundra, 15 FIT, 17 CRV Join Date: Dec 2009 Location: Chino Hills, CA iTrader: (163)	Subscribed __________________ If you will be purchasing ANY AT&T services online or in store could you mention that you were referred by me? My Employee Referral ID is eo4489. This would be a great help and it costs you nothing, thank you!
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10-06-2012, 05:40 PM	#8
pbonsalb Lieutenant General 5234 Rep 10,614 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Does the ASA clutch disengage only at idle speed or does it disengage anytime the blower is out of boost?
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10-08-2012, 07:42 PM	#11
edwinm3 Brigadier General 980 Rep 4,001 Posts Drives: F82 Join Date: Nov 2011 Location: Broward iTrader: (32)	ASA blowers give you good torque down low, it feels like a turbo. Blowers are a bit pricey, maybe that's why ESS guys are not using them anymore idk __________________ Grigio Telesto M4, 6MT. Coyote 5.0 F-150 991 GT3
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10-08-2012, 08:01 PM	#12
DouglaCorbi New Member 0 Rep 6 Posts Drives: bmw Join Date: Oct 2012 Location: good iTrader: (0)	The only company I think that has an option for a SC disengage clutch is g-power __________________
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10-09-2012, 03:47 PM	#15
mosx The mod bug has bitten. 22 Rep 565 Posts Drives: 2008 M3 Sedan Join Date: Jun 2010 Location: North Texas iTrader: (1) Garage List 2008 BMW M3 [0.00]	I've never heard of G-Power. How do their prices compare to ESS or the others?
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