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BMW 3-Series (E90 E92) Forum
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BMW 5 series Turbo, 700+BHP
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10-03-2008, 03:39 PM | #23 |
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10-03-2008, 03:40 PM | #24 | |
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Bagless is better
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10-03-2008, 03:44 PM | #25 |
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Nice spot Carlos...
Compressor stall occurs when the Turbo blades create abnormal airflow in the Turbo from abnormal loads. Generally from heavy tuning or Boost increases pushing the limits of the blades. I must admit to liking the noise.... But... Just like a Blow Off Valve, the noise can get very Chav.. very quickly. Stalling under such loads can reduce the life of the blades... Now.. another fine (loud) noise is Turbo Anti-lag.... A little more impressive with flame spitting as a bonus... Also Chavved though..... Another Turbo unit and blade killing performance 'gain'... but hey. Life's too short. Nice example from a Cossie using it properly.. |
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10-03-2008, 03:45 PM | #26 |
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10-03-2008, 03:47 PM | #28 |
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10-03-2008, 03:48 PM | #29 |
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Mate, you can dream all you want, you'll never suck dust quicker than me. My T5805 has the quickest map out there.... end of
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10-03-2008, 03:51 PM | #30 | |
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10-03-2008, 03:56 PM | #31 |
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Mate, how many times do I have to repeat myself? I was down there last week and about 20 people saw me. I did a 13.5 after only 3 goes with the T5805. I'm telling you I was sucking up dust like there's no tomorrow. Some foowah was next to me in his TC3202 and i whipped his arse.... TWICE!!
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10-03-2008, 04:01 PM | #32 |
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You guys with you vac's, mine is a VAX V12 and it's the fastest in the wet or dry
http://www.ewingelectrical.com.au/Vax_V12.html |
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10-03-2008, 04:01 PM | #33 | |
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10-03-2008, 04:02 PM | #34 | |
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10-03-2008, 04:05 PM | #35 |
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10-03-2008, 04:13 PM | #36 |
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alcoook, stock cars make the compressor stall noise also. Increasing boost will make it loader but lots of turbo cars can do it with stock boost levels. A stock fiesta rs turbo, but with a cone filter will do it.
A astra GSI turbo with the recirculating Dump Valve shut off will do it. As do Cosworths with a cone filter. funnily enough though the MFI escort rs turbo cannot do it whatsover.
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10-03-2008, 05:07 PM | #37 | ||
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Viv |
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10-03-2008, 05:15 PM | #38 |
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:finger:
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10-03-2008, 07:05 PM | #39 |
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hey watch it, I have a Dyson ?!
http://www.dyson.co.uk/store/product...DC25-ALLFLOORS Can't beat it, DC25, I've got a big ball in mine, so I think I win handling hands down, map or no remap. And I've got the mini turbine add on, so I can stick the shaft bit where the main bit can't go ! |
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10-03-2008, 07:11 PM | #40 | |
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10-03-2008, 08:02 PM | #41 | ||
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OMG, this is just too good. Is the boy totally immune??? Does irony not exist in the depths of fooookwhaaaaa land?! Class guys, sheer class!
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10-04-2008, 03:16 AM | #42 |
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Let's put this in context..
Just because your Vac has 2000 Watts, it doesn't mean that's all usable power and that you can get it down properly for a good suck up the 1/4 mile. I think you'll find the tuning on the Suction side is a better indicator of power. It's a long established rule of thumb that 'Watts sells cleaners, suck power wins races'. So make sure you Vac has decent airflow efficiency inside the cleaner. Otherwise known as AirWatts. As we all know, top performing Vacs have a suck power of around 350-450 air Watts. How well does yours suck? |
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10-04-2008, 04:22 AM | #43 | |
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Vacuums by their nature cause dust to become airborne, by exhausting air that is not completely filtered. This can cause health problems since the operator ends up inhaling this dust. There are several methods manufactures are using to solve this problem (Dyson, Vax, Telios etc). Some methods may be combined together in a single vacuum. Typically the filter is positioned so that the incoming air passes through it before it reaches the motor. You can upgrade this filter to K&N which is my next planned mod. This should increase the watts MASSIVELY through the motor to ensure no one has a chance of beating me down at the Carpetright meet next Saturday. Bag: The bag is the typical method to capture the debris vacuumed up. It involves a paper or fabric bag that allow air to pass though but attempts to trap all dust and debris in the bag. These are the most common systems amongst the hardcore "chippers" and most on PH have this set-up. Generally a bag system stands the best chance over 1/4 mile especially with the new Hartge lightweight bag hence I have a better power to weight ratio than bagless systems (see below) Bagless: In non-cyclonic bagless models (like Dysons), the role of the bag is taken by the container and a reusable filter, equivalent to a reusable fabric bag. It is a lie that these systems are better. Prove me wrong if you like but I have seen NO EVIDENCE to date... Cyclonic separation: Vacuum cleaners employing this method are also bagless. It causes intake air to be cycled or spun so fast that the dust is forced out of the air and falls into a storage bin. The operation is similar to that of a centrifuge. Nice idea but its really copying the technology above but less effective. Water Filtration: First seen commercially in the 1920s (the Model T vac) in the form of the Newcombe Separator (Later to become the Rexair Rainbow), water filtration vacuum cleaners use water as a filter. It forces the intake air to pass through water before it is exhausted. The idea behind this is that wet dust cannot be airborne. They filter out any debris that is water soluble and are considered very effective, but they require the water to be dumped and the machine rinsed out after every use. This is old technology now and very rarely seen unless you live in the countryside... Ultra Fine Air filter: This method is used as a secondary filter after the air has passed thought the rest of the machine. It is meant to remove any remaining dust that could harm the operator. DUST IS A KILLER and therefore this system has opened eyes right across the vacuum industry. You are a total dipstick buddy in dissing me and my performance at last month's Carpetright run. If you wanna prove me wrong turn up in person you scaredy cat and see me at the RWYB Carpetright meet next Sat... I wait in anticipation.... |
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10-04-2008, 04:34 AM | #44 |
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You forget to mention this :-
A miniaturised nanomanipulation and nanoindentation system has been designed and manufactured to perform sub-micron localised in-situ deformation studies in a high resolution transmission electron microscope (HRTEM). The nanomanipulation drive comprises two independent mechanisms for both coarse and fine positioning of sharp indenter tips. Small slip-stick inertial sliders are used to coarsely position a tip which fits inside a bespoke hollowed specimen holder for a JEOL (Japan) 2010/3010 series vacuum. The coarse drive comprises three fully independent sliders which are set mutually perpendicular to one another (x, y and z) with a range > 1 mm and resolution ~ 100 nm. Fine positioning is achieved with a quartered piezoelectric tube with range ~ 2 μm and resolution < 1 Å. vacuum displacement sensors have been used to characterise the nanomanipulation drive performance including total displacement rate and step size in ambient conditions. These are compared to the operation of the drive within a TEM under vacuum conditions. TEM observations at high magnification enable optimisation of the fine and coarse motion and overall vacuum power
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