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Old 08-27-2009, 05:00 PM
evil[apostrophe]tree evil[apostrophe]tree is offline
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Default homemade supercharger

could i take the compression side of a turbo charger and run it with a pulley off the serpentine system, or am i not going to spin it up fast enough? if i could i bet i could make brackets to hold it and make a junkyard supercharger.
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Old 08-27-2009, 05:55 PM
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HLC HLC is offline
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Default Re: homemade supercharger

sounds plausible.
You can choose pulley diameters to get whatever RPM you want, I'd hafta think.
But why aren't there electric turbochargers?
That would seem even easier.
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Old 08-27-2009, 05:56 PM
truckfixr truckfixr is offline
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Default Re: homemade supercharger

Don't waste your time or effort. Turbos spin at 100k+ rpm.
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Old 08-27-2009, 06:18 PM
MunkeyQ MunkeyQ is offline
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Default Re: homemade supercharger

There's a similar device actually on the market - a centrifugal compressor like a turbocharger driven by the serpentine belt. However...it has a planetary gearbox to increase the impeller speed to 100k rpm or so as truckfxr pointed out. You wouldn't be able to achieve that sort of gearing by belts alone.

If you can modify an existing geartrain to drive a turbo's impeller, it would be possible. Making one from scratch would be pretty difficult unless you've got a metalworking shop and the right skills - there's a lot of tight tolerances and high speeds.

There are electric superchargers which actually work, and they're not sold on ebay. A vast amount of power is needed to run it...I saw a commerical one made from a rewound truck starter motor. It could only be used for a minute or so before it got too hot though, and it needed a few spiral cell batteries to provide the immense amount of current.
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Old 08-27-2009, 08:50 PM
944 944 is offline
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Default Re: homemade supercharger

Quote:
Originally Posted by truckfixr View Post
Don't waste your time or effort. Turbos spin at 100k+ rpm.
This
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Old 08-28-2009, 12:47 AM
happy_one_hit happy_one_hit is offline
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Default Re: homemade supercharger

Quote:
Originally Posted by evil[apostrophe]tree View Post
could i take the compression side of a turbo charger and run it with a pulley off the serpentine system, or am i not going to spin it up fast enough? if i could i bet i could make brackets to hold it and make a junkyard supercharger.
What's to stop you from installing the turbo in the conventional way. MUCH more efficient.
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Old 08-28-2009, 01:04 AM
truckfixr truckfixr is offline
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Default Re: homemade supercharger

Quote:
Originally Posted by MunkeyQ View Post
There's a similar device actually on the market - a centrifugal compressor like a turbocharger driven by the serpentine belt. However...it has a planetary gearbox to increase the impeller speed to 100k rpm or so as truckfxr pointed out. You wouldn't be able to achieve that sort of gearing by belts alone.

If you can modify an existing geartrain to drive a turbo's impeller, it would be possible. Making one from scratch would be pretty difficult unless you've got a metalworking shop and the right skills - there's a lot of tight tolerances and high speeds.

There are electric superchargers which actually work, and they're not sold on ebay. A vast amount of power is needed to run it...I saw a commerical one made from a rewound truck starter motor. It could only be used for a minute or so before it got too hot though, and it needed a few spiral cell batteries to provide the immense amount of current.
I might add that if the shaft were axially loaded via a belt or drive gear, the bearings would fail PDQ. Most turbos use sleeve bearings. The shaft rides on a film of oil and never contacts the bearing sleeve when spinning. Forcing the shaft against the sleeve would be quick death for the turbo.
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