
	Where results make sense

Topic: Roots type supercharger

Related Topics

Centrifugal type supercharger

Supercharger

Root (disambiguation)

Turbocharger

Miller cycle

Dugald Clark

Intercooler

Engine displacement

Gas compressor

Wankel engine

Internal combustion engine

Roots (TV miniseries)

Vought F4U

In the News (Sat 5 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Roots type supercharger - Wikipedia, the free encyclopedia
		The Roots type supercharger or Roots blower is a positive displacement type device that operates by pulling air through a pair of meshing lobes not dissimilar to a set of stretched gears.
		Much work has been done to improve the efficiency of the Roots type supercharger, but because it does not have internal compression (the design can be classified as just a "blower") it will never have the same potential as the twin-screw type supercharger, or the centrifugal type supercharger.
		All supercharger types benefit from the use of an intercooler to remove heat produced during compression.
	en.wikipedia.org /wiki/Roots_type_supercharger (387 words)

	Supercharger (Site not responding. Last check: 2007-10-21)
		A supercharger is a device used to pump fuel/air mixture, the charge, into the cylinders of an internal combustion engine under pressure.
		It is similar in purpose to the closely related turbocharger, but differs in that the supercharger is powered by gearing (or belts) off the engine's crankshaft, while the turbocharger is powered by the pressure of exhaust gases driving a turbine.
		Throughout WWII British superchargers generally had higher critical altitudes than their German counterparts, and when combined with higher octane fuels that allowed for higher boost levels, British engines were generally able to outperform German ones.
	bopedia.com /en/wikipedia/s/su/supercharger.html (1416 words)

	Twin-screw type supercharger - Wikipedia, the free encyclopedia
		The twin-screw type supercharger is a positive displacement type device that operates by pulling air through a pair of meshing lobes not dissimilar to a set of worm gears.
		Although not as ultimately efficient as the centrifugal type supercharger, it does not suffer from the latter's lack of low-rpm boost.
		All supercharger types benefit from the use of an intercooler to reduce heat produced during compression.
	en.wikipedia.org /wiki/Twin-screw_type_supercharger (293 words)

	Roots type supercharger: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-10-21)
		A supercharger (sometimes called a blower), a positive displacement or centrifugal pump, is a gas compressor used to pump air into the cylinders of an...
		The twin-screw type supercharger is a positive displacement type device that operates by pulling air through a pair of meshing lobes not dissimilar to a set of stretched...
		The centrifugal type supercharger is practically identical in operation to a turbocharger, with the exception that instead of exhaust gases driving an impeller,...
	www.absoluteastronomy.com /encyclopedia/r/ro/roots_type_supercharger.htm (964 words)

	SuperchargersOnline.com :: Roots Type Superchargers Explained
		The roots style supercharger is the oldest type of supercharger and dates back to the early 1900's when it was first used as an industrial air-moving device.
		The roots type supercharger is known for its ability to produce large amounts of boost while spinning at very low speeds.
		The roots type supercharger is the oldest type of supercharger and still has its place in the automotive world on dragsters, smaller engines, and trucks - all of which are need power in the bottom half of the rpm range.
	www.superchargersonline.com /content.asp?id=22 (605 words)

	cars - Supercharger
		A supercharger (sometimes called a blower), a positive displacement or centrifugal pump, is a gas compressor used to pump air into the cylinders of an internal combustion engine.
		It is similar in purpose to the closely related turbocharger but differs in that the supercharger is powered by gearing, by belt- or by chain-drive from the engine's crankshaft while the turbocharger is powered by the mass-flow of exhaust gases driving a turbine.
		A supercharger is only able to supply so much pressure because the compression increases the air temperature and the engine is limited in maximum charge-air temperature before pre-ignition occurs.
	www.carluvers.com /cars/Supercharger (1669 words)

	Used Superchargers - Home (Site not responding. Last check: 2007-10-21)
		Most of the superchargers sold today are centrifugal-style superchargers, which are internal-compression superchargers, meaning they create the boost (compress the air) inside the supercharger head unit (blower) before discharging it into the engine's air intake.
		Most street superchargers produce somewhere in the range of 6 to 9 psi, meaning they produce 6 to 9 additional pounds of pressure over the atmospheric pressure at that elevation (at sea level atmospheric pressure is 14.7 psi).
		Centrifugal superchargers are basically belt-driven turbochargers (as opposed to exhaust-gas driven), with inlet air drawn to the center of the blower where the high impeller speed converts this air velocity into pressure.
	www.usedsuperchargers.com /faq.html (3228 words)

	Roots Supercharger (Site not responding. Last check: 2007-10-21)
		Unlike the compressors of the turbocharger and the centrifugal supercharger, which deliver exponentially greater boost with increased rpm and which are not designed to perform at lower rpm, a positive displacement supercharger pumps a fixed amount of air for every revolution, and delivers instant boost even at low rpm.
		The roots type supercharger is based on the very efficient air moving principles of positive displacement, but loses supercharging efficiency for several reasons, and primarily because it doesn't compress the air directly.
		The roots type blower is inherently noisy, largely from the gearing required to run the rotors.
	www.coloradocobras.com /whipple/superchargers/roots-superchargers.html (366 words)

	Whipple Supercharger FAQ (Site not responding. Last check: 2007-10-21)
		The centrifugal supercharger is a belt driven turbo that has a lag time while it "spools up." The centrifugal commonly does not come into boost until 2600 to 3000 rpm and they commonly do not reach full boost until max rpm.
		The Whipple twin-screw supercharger is actually a compressor, which means it compresses air internally as well as compressing it in the manifold.
		The two types of superchargers have different performance characteristics that have led to several debates on which supercharger is preferable.
	www.coloradocobras.com /whipple/about-whipple/whipple-faq.html (1415 words)

	Supercharged MR2 Technical Information Page
		The supercharger is driven by a serpentine belt off of the crankshaft and shares it's drive belt with the water pump.
		Two special tools are required for disassmbly of the supercharger; SST 09504-00011 for keeping the pully from rotating while you undo the nut that holds the clutch hub to the supercharger.
		The supercharger adds heat to the intake charge both by conduction of housing heat since the supercharger is bolted onto the engine and also by pressurizing the intake charge.
	mr2.com /TEXT/SuperChargerInfo.html (2618 words)

	Max Auto - Supercharger Conversion Info - Supercharging (Site not responding. Last check: 2007-10-21)
		Centrifugal superchargers are basically belt-driven turbochargers, with inlet air drawn to the centre of the blower where the high impeller speed converts this air velocity into pressure.
		Adding a supercharger to older model applications is a no-brainer since most manufacturers have taken the guesswork out of fuel augmentation under boost and spark timing management.
		Supercharging is an easy Bolton way to make big power gains on a relatively stock engine, provided you do your homework and pick the right blower for the job.
	www.maxauto.co.za /cntview.asp?CatID=30 (769 words)

	J & M Motorsports Performance (Site not responding. Last check: 2007-10-21)
		The Roots Type Supercharger is the first style supercharger that was ever used and can be dated back to the 1880s when the Roots brothers designed it as an air conveyor for mine shafts.
		Roots blowers act like air pumps (not compressors), and In general, Roots blowers have a two or three lobe rotor design, depending on the size of the case.
		Roots blowers will give you positive pressure to your motor from just a crack of the throttle, and will give all that they have to offer at full throttle no matter what the rpm of the motor.
	www.jandmmotorsports.com /superchargers.htm (659 words)

	Paxton Automotive - Frequently Asked Questions
		A: While the supercharger is always spinning and moving air, it is not always producing boost in the engine.
		Paxton superchargers offer the power you need on demand, the reminder of the time the engine is working just like a normally aspirated engine.
		Under normal freeway driving, for example, the supercharger is not under boost but is increasing the efficiency of the engine by forcing air through restrictions like the air filter.
	www.paxtonauto.com /faq.html (2585 words)

	Roots Side-Mount Supercharger \| Advance Auto Parts (Site not responding. Last check: 2007-10-21)
		For those not familiar with superchargers, a traditional Roots blower grabs the air in the middle of the rotors, spins it around between the sides of the case, and out the bottom.
		Although not as efficient as a twin-screw supercharger (which compresses air between two rotors and sends it right down the middle of the case), a Roots is usually less expensive and generally has a higher capacity for big-block engines.
		Later, between the wars, GMC used Roots blowers on two-stroke diesel truck engines, and it was only a few years later when the first hot rodder put one on top of a V-8 engine to go faster on the dry lakes.
	www.advanceautoparts.com /english/youcan/html/pht/pht20021101rb.html (535 words)

	Supercharging Your Engine \| Advance Auto Parts (Site not responding. Last check: 2007-10-21)
		All three types of blowers—Roots, centrifugal, and screw—can be adjusted to varying levels of boost (how much pressure they create), and a 50 percent increase in power is pretty typical.
		The screw-type supercharger is also mounted on the manifold, but it usually is smaller and less conspicuous than a Roots blower.
		The screw supercharger offers potential advantages over non-compressor designs in that the outlet temperatures are normally lower, producing a denser air charge.
	www.advanceautoparts.com /english/youcan/html/pht/pht20020101sc.html (928 words)

	SuperchargersOnline.com :: Roots vs. Centrifugal vs. Screw Type Supercharging
		That is why it is very important that you choose the right type of supercharger to get the right kind of power for the type of conditions that you will put your vehicle through.
		Centrifugal Supercharging compresses the air inside the case of the supercharger using an impeller.
		Roots blowers are also extremely reliable and require very little maintenance, which is why Ford, GM, Mercedes, Jaguar, and Austin Martin have all featured Roots blowers as original equipment on select high performance vehicles.
	www.superchargersonline.com /content.asp?ID=5 (649 words)

	Club Lexus Forums - SRT SC roots or centrifigal
		Roots are the type used in top fuel drag racing and OEM applications like the Neuspeed in VWs, TRD units in the Solara, the supercharged Buicks (I believe made by Magnusson).
		This is from the Paxton Supercharger site, if I read this right: roots type is positive displacement and pushes the air through the screws, centrifugal is a pull type (with an impeller like a jet-ski) and sends it into the scroll.
		The roots types don't necessarily compress the air intake charge as much as move it from one place to another.
	www.clublexus.com /forums/showthread.php?t=17185 (407 words)

	GM Performance Parts - Engine Parts
		Front and center in the Vibe supercharger kit is an Eaton Roots-type blower that feeds the 1.8L engine with 7.5 lbs.
		The best feature of the Eaton Roots-type supercharger, besides it's high output, is that power is available across the entire RPM range, greatly reducing the "lag" usually found in turbocharger kits.
		The 2.4L Twin Cam Supercharger Kit carries a warranty covering the complete kit for defects in material and workmanship for a period of 12 months or 12,000 miles from date of installation.
	www.gmgoodwrench.com /perfpartsjsp/partlist.jsp?cat=14253§ion=ep (800 words)

	The performance of a DePalma Roots-type supercharger (Site not responding. Last check: 2007-10-21)
		The performance of the DePalma supercharger with atmospheric pressure at the discharge was compared with that of a hypothetical NACA Roots-type supercharger of the same displacement.
		The results indicate that, if warping and growing of the metals of the case and impellers are neglected, the most uniform clearances can probably be maintained for all operating conditions when the case and impellers are constructed of metals that have the same coefficient of expansion.
		The results also show that the discharge and intake openings of this model of the DePalma supercharger are too small, which lowers the volumetric efficiency and impairs the performance at all speeds and pressure differences.
	naca.larc.nasa.gov /reports/1936/naca-tn-558 (242 words)

	SUPERCARS.NET - 1927 Bugatti Type 35B
		The Type 35B marked the introduction of a blower to the Type 35 line.
		To compensate for the displacement, a light Roots type supercharger was added to the engine.This car started an era of blown Bugattis that would last up to the Type 57.
		The highlight of the type 35Bs success was had at the 1926 Targa Florio in which the car place first.
	www.supercars.net /cars/2013.html (242 words)

	The Old One - Energy Dynamics : Commentary - Blowers and How-To
		The reason that you are accustomed to seeing the large intercoolers is not necessarily due to the high temperatures seen in driving a turbo supercharger, but the amount of boost and this "type of" supercharger cause the increased charged temperatures.
		Both turbochargers and centrifugal superchargers are the same in design with the exception of the method of drive, exhaust vs. mechanical, and both are big heat producers.
		The modern day Roots blower has been refined over the years to be a very efficient power-producing package.
	www.theoldone.com /articles/blowers-and-howto.html (1359 words)

	Supercharger kits for 16v Zetec Ford Focus
		FocusSport is proud to release it's new Vortech driven Supercharger kit for the 2.0 litre 16v Zetec platform.
		The key to the design of this supercharger kit is the simplicity in which it can be installed.
		Pre-orders for the supercharger kits are being taken right now with kits expected to ship August 15, 2005.
	www.focussport.com /supercharger.htm (1012 words)

	Supercharger Basics
		All belt-driven superchargers need horsepower to run--sometimes as much as 20 percent of engine’s total.
		The Roots-type blower, such as this B&M street unit, is actually a giant air pump that compresses the air charge in the intake manifold and cylinders.
		Air is compressed inside the supercharger before it’s delivered to the engine.
	sporttruck.com /techarticles/1436 (1466 words)

	Supercharger blower - SVTPerformance - supercharger or blower?
		Supercharger manufacturers refer to a blower's efficiency in terms of adiabatic The classic supercharger is a Roots-type blower which features a two- or
		A roots type of supercharger is literally a pump, where as the centrifugal is more like a fan, or a literal blower.
		Magnuson’s new Radix supercharger is an inter-cooled Roots-style blower for EFI.
	blower.allinfosites.com /q/blower-supercharger-blower.htm (739 words)

	Two Guys Garage Forum - Want to put a roots type supercharger on looking for any advice or facts.
		Want to put a roots type supercharger on looking for any advice or facts.
		I have some specific questions on the characteristics of roots type super chargers.
		I have never seen anything done on the small roots kind of power adders that don't have inter/after cooler options and can't seem to get technitions to tell me enough about them and I am not spending 1500-2100 for one for only a 25% gross gain.
	www.twoguysgarage.com /forum/showthread.php?t=710 (402 words)

	Supercharger (roots type) - Mazda Forums
		They don't throw huge flames out of 2 foot head pipes, they don't have the HUGE sound of supercharged fuelers and they are faster than supercharged cars.
		When you get down to it, supercharger will be much more difficult to custom fabricate and will not even give near the same amount of power gains then a turbo.
		Do a search on turbo vs supercharger and 99% of the time the general consensus is that turbo is more practical and the better choice.
	www.msprotege.com /vbb222/showthread.php?t=4816 (1634 words)

	Supercharger
		I have had the 1300 supercharger for several years, it has proven it self to be a very efficient source of "MORE POWER".
		Camden Superchargers recommend that boost be limited to 4 - 6 pounds on an engine having a compression ratio of 8.5 to 1 when running on premium unleaded fuel of 92 octane.
		A supercharged stock engine does not have to be “revved” as high as an un-blown engine to achieve superior performance.
	www.izook.com /tech/samurai/engine/camden/camden.htm (612 words)

Try your search on: Qwika (all wikis)