Mud-club
Chat & Social => The Bar - General Chat => Topic started by: Skibum346 on March 17, 2008, 15:57:54
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How about this a cheap reliable aftermarket supercharger from Japan.
:roll: (http://cgi.ebay.co.uk/Land-Rover-Supercharger-Turbo-Range-Discovery_W0QQitemZ270218592515QQihZ017QQcategoryZ36680QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)
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Clicky!
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Hmmmmmm .. ;)
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Hiclone anyone!
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So adding something that will reduce airflow into the engine increases power? I shouldn't have bought that K&N filter after all! :lol:
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Hiclone anyone!
I was just thinking the same.
Anyone brave enough to give it a go? it's only £22.49 as oposed to £60 odd for the Hyclone.
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Wow zero friction love to know what bearings they use so i can get some for my wheel bearings.
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Is there a warranty against the cheap tacky parts becoming detached and going through your turbo???? :lol:
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Hmmmmm im tempted will it screw my petrol engine up tho :-.
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Ill sell you my version at half the price......
(http://russelldavies.typepad.com/planning/images/windmill.jpg)
:lol: :lol: :lol::lol: :lol: :lol: :lol: :lol:
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Try a hairdryer ;-)
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unbelievable
call the police :police:
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The sad part is there are some very useful turbos out there. I rather fancy one of the experimental electric ones. These reduce turbo lag by using an electric motor to spin the turbo up before the exhaust gases take over as with a conventional one. One of those with the ballrace bearings that apparently allow you to spin the turbo by blowing into the air intake please!
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I can sort of see why a hiclone might work as it is mounted fixed and still so the air is forced to swirl when passing through it ...
but if the fan bit in this spins dosn't that mean that the air keeps going straight as it will only spin at the same speed as the air passing through it :? :?
If it was powered electrically or belt driven then maybe but as it is [-X [-X
Isn't ebay covered by trading standards???
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You'll probably find that somewhere in the small print it says "up to xxbhp" - up to including 0!
The problem with the hiclone to my mind is that although it might swirl the air any beneficial effects will surely be removed when the air hits the turbo, which will demolish the swirl effect?
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I can see the theory behind the hiclone, directing the swirled air to optimise the angle it hits the turbine. The hiclone adjusts the angle of attack of the air, instead of the blades. After all, a turbo is just a centrifugal compressor.
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so why do they reccomend it for N/A vehicles as well????
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The hiclone may increase the velocity of the air by inducing a spin, that'll increase the dynamic pressure. But this stupid thing actually spins, therefore it will take out energy from the air, to make it spin. A divergent duct, the air velocity will decrease (DVD-Divergent, Velocity, Decrease). Meaning this will actually slow down and restrict air flow!!!
Hiclone may help in turbo and non turbo, but this will hinder in turbo and non turbo!!!
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HiClones work by introducing a lot of turbulence into the air flow. This acheives 2 things, firstly turbulent air flow causes less drag than laminar flow, that's why cars have spoilers ;)
Secondly it increase the amount of swirl in the air as it enters the combustion chamber, swirl helps with the mix but also helps the flame front to propegate across the cylinder.
From that point of view the closer it is to the inlet valves the better. Perhaps that's why you get 2 :-k
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.....firstly turbulent air flow causes less drag than laminar flow, ...
So my roof rack creating turbulent air is actually reducing drag??????
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.....firstly turbulent air flow causes less drag than laminar flow, ...
So my roof rack creating turbulent air is actually reducing drag??????
Yes... but only when your not stood on it! :doh: :lol:
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.....firstly turbulent air flow causes less drag than laminar flow, ...
So my roof rack creating turbulent air is actually reducing drag??????
It's not that simple, but if you disturbed the laminar flow along the roof then it would, however the roof rack has too many surfaces adding to the drag.
But it is also the reason why polishing the inlet manifold internally is a bad idea ;)
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Any spinning of air or turbulent causes drag, It interesting that you make the statement you have as most manufactures have move over to plastic moulded inlet manifold because they can get a better surface finish(less drag). on turbo charge engine drag causes a bigger difference between the Turbo and intake valve so in effect your turbo waste gate open at lower pressure at the the valve.
You are correct that turbulent air will help mixing though.
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Golf balls have dimples that help reduce drag by creating turbulent air when spinnig and cutting through the air thus leaving less of a wake (Dirty air)...but i still dont see how it would would work in a hiclone wedged in an inlet?
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Any spinning of air or turbulent causes drag, It interesting that you make the statement you have as most manufactures have move over to plastic moulded inlet manifold because they can get a better surface finish(less drag).
It's probably got more to do with cost/weight/noise/accuracy/lack of machining/complexity TBH, plus modern engines have both spin and tumble in their combustion chambers, but turbulaent air has less drag with the added advantage that it will help mix fuel vapour into the air stream whereas laminar flow by definition will not.
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When we used to build drag bikes (10 years ago at my old works) we would polish all air intake pipes as far as and including the carbs to get the air in fast but after the carbs it was important to have smooth curves and no blunt edges (porting sharpend up all the y connections in the plumbing) but after the carbs the surface of the ducting had a very fine bead blast finish this helped to add turbulence to the air/fuel mix which gave a much more even and faster burn in the combustion chamber, adding special pistons with shaped tops to add a split burn ie. the flame traveled around the edge of the bore instead of across it you could get a lot more bang from the same amount of fuel add in cooling the air and adding giggle gas and you can make a lot of power :D
the even fast burn is the key that's why adding propane to diesel engines even in small amounts increases power a lot. water injection as used on the old spitfire engines has the effect of cooling the air and introdusing twice the oxygen and flamable hydrogen, mix the water with a little methanol and the power goes up again .We could get 1 ltr of water/methanol mix to last about 500 miles on a 1229cc engine and give about 20% power increase similar to fitting a turbo but without the extra heat and oil problems .