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Thread: Electric forced induction

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Posts: 21-30 of 42
2013-07-12 20:57:22
#21
Someone just did a comparison of their modded car to his e-turbo one...


Originally Posted by xxxx
Fenton,

When I watch closely your videos update 2 :

You do the 0-60mph in about 6 to 6.5 seconds.
( You start at around 5 seconds and you reach 60mph at 11-11.5 seconds.)

You do the 0-100mph in about 16 seconds.
( You start at 5 seconds and you reach 100mph at 21seconds flat. )

Now, it was interesting for me to compare your performance result to my own setup.

I have spent 3K in mods to be at around 185WHP-190WHP with 91 octane pump gas.

FA20CLUB Ecutek Kit ( tune+cable+license ) 900$
AFE Intake Kit 300$
Borla UEL Header 625$
HKS front pipe 350$
Greddy axleback exhaust 625$
FA20Club Overpipe 250$ ( Not yet installed )




As you can see with my own video;

I do the 0-60mph ( 0-100KM/H) in about 6.5 seconds.

( I start at around 37.5 seconds and reach 60mph at 44 seconds )
( I start at around 1min7.5 seconds and reach 60mph at 1min14 seconds )

I do the 0-100mph (0-160km/h) in 15-15.5 seconds
( I start at 37.5 seconds and reach 100mph at 54 seconds )
( I start at around 1min7.5 seconds and reach 100mph at 1min22second )


Conclusion, we have very similar performance but your setup cost half the price of mine.

Now I'm wondering what power I could reach on top of my setup by adding one of those electric supercharger... ( 220-240 whp ) ???

Thanks for showing this new interesting boost option !
2013-08-16 20:42:02
#22
Looks like they updated the controller box

Originally Posted by fenton
Update

Got the new recharger system installed and have to say it makes a dramatic difference in recharge time. Doing some test runs from 0 - 200 km/h resulted in recharge to 28v in about 10 seconds.... essentially the time it took me to slow back down to 80km/hr.

You can just drive and drive it and the second you let off it the recharge begins to sore immediately. I have stated many times that i didnt have a problem with the recharge rate on the street but this will really help out the guys that will be trying this on autocross and on the road course.

The one time i DID notice the recharge was with the BMW races. We did about 15 pulls in different gears most times back to back. After about 15 minutes of abuse it was taking longer than it did on the street.

This system also has the added benefit of getting the rechargers and batteries warmed up quicker which help you get to optimal temps for dumping the most juice to the charger.

Rob has also fitted a larger battery tray and with it we are able to run essentially the stock battery size with the dump batteries on the side. This will help me with starting in the winter. Total weight increase over stock with current battery setup is 9 lbs.

Here is a pick of the new layout.

2014-06-30 02:11:11
#23
They've made more progress with the system...

The test mule specs:
2013 FRS 6MT
Mods:
TQ250 with dual dump battery configuration(starter relocate to trunk)
OpenFlash Tablet
OpenFlash Header
Single tip cat-back
Modified air duct
93oct (although the it's mapped conservatively enough to make the same power on 91oct)
[Stock run shown for reference]

2014-06-30 13:26:00
#24
That thing must be really fun to drive now.
2014-07-01 04:57:04
#25
Does anyone know the kv of the motor they are using. That motor has to be screaming under load. Not sure if there is a way to determine the load the compressor is putting on the motor. Brushless really is the way to go, but gear multiplier with the proper configuration would do wonders.
2014-07-01 10:46:42
#26
Originally Posted by ebinkerd
Does anyone know the kv of the motor they are using. That motor has to be screaming under load. Not sure if there is a way to determine the load the compressor is putting on the motor. Brushless really is the way to go, but gear multiplier with the proper configuration would do wonders.



You might want to see this thread?

Open Source Electric Supercharger - Scion FR-S Forum | Subaru BRZ Forum | Toyota 86 GT 86 Forum | AS1 Forum - FT86CLUB
2014-07-01 14:15:35
#27
That doesn't make much sense. A 1500kv motor being ran off of 24vdc is only 36000 rpm. And that is no where near the average operating speeds on 100k some of these turbos can see.
2014-07-01 14:22:31
#28
Well, if you are following along, they are considering other motors, and 32-volt setups. They seem to be aiming for over 40k RPM if they can. How that is going to work when actually having to perform work (versus free spinning) is another story I guess. As for the RPM being less than superchargers, they are aware of this and only expecting 3 psi or so at redline. A bit more in the lower RPM. I think they are optomistic there still, but it's not like they are trying to match a supecharger setup. They know they are getting much less.
2014-07-01 17:02:29
#29
I haven't read too much detail, just the excerpts. Don't get me wrong, its an awesome idea and has lots of potential when the tech for brushless motors advance. I'm just saying that the rpms they need to turn to make it work while likely won't be cost effective. Its the same reason the centrifugal superchargers use s gear multiplier. Some one has to eat the cost though and I'm glad to see someone doing it.
2014-07-02 15:26:38
#30
Originally Posted by ebinkerd
I haven't read too much detail, just the excerpts. Don't get me wrong, its an awesome idea and has lots of potential when the tech for brushless motors advance. I'm just saying that the rpms they need to turn to make it work while likely won't be cost effective. Its the same reason the centrifugal superchargers use s gear multiplier. Some one has to eat the cost though and I'm glad to see someone doing it.


I think one of the biggest criteria that went into the design of the system was to keep it affordable. The creator is viewing this endeavor as a business product, not some one off science experiment.

I came really close to asking to be a beta tester for the SR motor when I had the SE-L. Even today, my crazy mind thinks about how it would work on the M5 (S62 motor). I'd probably need 2 blowers and 2 of every thing else to keep up the boost up, though....hmmmm... Common sense says just buy belt driven kit that's been around for ever and call it a day.... I dunno.
Last edited by hammerin hank on 2014-07-02 at 15-31-25.
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