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Old 06-05-2014, 12:55 PM   #1
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Default Compound turbo with electric supercharger?

Has anyone thought of adding this electric centri supercharger to a big turbo setup to help low end and spoolup?

Openflash Electric Supercharger (Dyno & Pics) - MX-5 Miata Forum
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Old 06-05-2014, 05:36 PM   #2
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I thought about using one of these as the filter on my turbo!

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Old 06-05-2014, 05:39 PM   #3
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Baller on a budget.

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Old 06-05-2014, 07:13 PM   #4
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This electric Thupercharger:




..will probably make a 1.8 spool that GT3076 like a 2.2L
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Old 06-05-2014, 08:58 PM   #5
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I have a better solution

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Old 06-05-2014, 09:47 PM   #6
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I came out of lurking to lol
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Old 06-07-2014, 03:02 AM   #7
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Old 06-08-2014, 10:30 AM   #8
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How about a 2-stroke supercharger?

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Old 06-08-2014, 10:46 AM   #9
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These guys are nuts! This is a great review of the capabilities of these electric supercharges.

Fixed!

Last edited by Rallas; 06-08-2014 at 09:44 PM.
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Old 06-08-2014, 01:48 PM   #10
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How about a jet engine made out of a turbo feeding the exhaust gasses for another turbo that's blowing into the engine?
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Old 06-08-2014, 01:57 PM   #11
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Quote:
Originally Posted by triple88a View Post
How about a jet engine made out of a turbo feeding the exhaust gasses for another turbo that's blowing into the engine?
Thats pretty much what they are already doing in WRC, except not using another turbo. They just put a flame tube combustor in the manigfold before the turbo and use the turbo like a turbojet. It can just steady run, and then when they need boost the turbo is already at full speed, even at low RPM.







Ive already decided Im going to build one of these one day, probably on a Honda.
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Old 06-08-2014, 02:03 PM   #12
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Quote:
Originally Posted by relte View Post
These guys are nuts! This is a great review of the capabilities of these electric supercharges.
http:// https://www.youtube.com/watc..._8&app=desktop
You definitely fucked that up...

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Old 06-08-2014, 02:16 PM   #13
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There is a huge difference between those electric superchargers, and this electric supercharger:


Thanks to the RC modeling hobby, brushless motors and controllers have become cheap and their performance is nothing short of amazing. Lets put it this way, all of the fastest RC planes and helis are electric.
Slap a compressor wheel and housing off of a real turbo on the shaft of a big *** brushless motor and you get an electric supercharger that actually does something.

I would think you could use one of these as a spool aid pretty easily. The hard part would be making some kind of bypass so it didnt act as a restriction once the big turbo starts blowing through it.
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Old 06-08-2014, 02:19 PM   #14
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Why not put an electric motor directly on the turbo compressor wheel instead. "F1 MGU-K", ghetto style.
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Old 06-08-2014, 03:43 PM   #15
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Looks interesting

FTS-TQ25024V - New site
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Old 06-08-2014, 03:49 PM   #16
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Quote:
Originally Posted by NiklasFalk View Post
Why not put an electric motor directly on the turbo compressor wheel instead. "F1 MGU-K", ghetto style.
Specifically? Mostly the fact that half a dozen groupings of the best motorsport engineers in the world combined with a total budget somewhere well north of a billion dollars a year hasn't made this reliable yet.
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Old 06-08-2014, 04:08 PM   #17
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It will be reasonable reliable sometime and if the complexity is reduced (only spoolup and not charging) the chance is greater.

But it's not time for a electric compressor connection as a standard option (from Garret, BW etc) just yet.
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Old 06-08-2014, 04:37 PM   #18
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The problem I see with it is that it either has to have some way of disengaging and allowing the turbo to free-spin, or you have to build a brushless motor that can reliably spin up to 150k+ rpm under power. If the turbo is trying to spin faster than the motor can spin it, then the motor will be acting like a brake and slowing the turbo down.
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Old 06-08-2014, 10:03 PM   #19
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None of these gimmick electric superchargers work due to only being fans and not compressors. Now if you could get a descent RC brushless inrunner motor with the right KV to provide enough power and shaft speed to spin a compressor you might get something that could work. Use a bybass valve found on most crank driven superchargers and you might be able to get something that works. Running a 24v electrical system would help to get the motors spinning fast enough to spin a centrifugal compressor fast enough to make any real boost.

I need to dig through my automotive engineering book (or Google ) to find a chart to show how much HP is needed to drive a supercharger. I remember something like 30hp for 5-7 psi on a 4 banger and closer to 100HP for high HP applications. Even at 30HP that is a ton of Watts/Amps.

Add upon the cost and you can build a dig churbo or find Greedy kit for cheap!
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Old 06-09-2014, 08:32 AM   #20
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Quote:
Originally Posted by relte View Post
None of these gimmick electric superchargers work due to only being fans and not compressors. Now if you could get a descent RC brushless inrunner motor with the right KV to provide enough power and shaft speed to spin a compressor you might get something that could work. Use a bybass valve found on most crank driven superchargers and you might be able to get something that works. Running a 24v electrical system would help to get the motors spinning fast enough to spin a centrifugal compressor fast enough to make any real boost.

I need to dig through my automotive engineering book (or Google ) to find a chart to show how much HP is needed to drive a supercharger. I remember something like 30hp for 5-7 psi on a 4 banger and closer to 100HP for high HP applications. Even at 30HP that is a ton of Watts/Amps.

Add upon the cost and you can build a dig churbo or find Greedy kit for cheap!
You just described the phantom charger. FTS-TQ25024V - New site
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