Full throttle Electric Supercharger Build Thread

[mid_life_crisis]

Originally Posted by Calum

Rob, thanks for posting. I didn't realize you were reping the company, glad to have you in the community.

I read something somewhere that gave me the distinct impression that he pretty much is the company.

[s2d4]

Originally Posted by neutron256

My only concern would be people without the proper expertise trying to build one and causing harm to their car or worse themselves.

Yeap, judging by some proposed setups so far, pretty scary indeed. At least get someone with electrical/electronics/controls major/eng to tag along....

[jamesm]

Originally Posted by s2d4

Yeap, judging by some proposed setups so far, pretty scary indeed. At least get someone with electrical/electronics/controls major/eng to tag along....

My experience is in programming, specifically as it applies here to embedded systems. I've also done quite a bit of solid modeling, fea and machine work (I went to school for mechanical engineering and worked in the field prior to switching careers). I can offer those skills, but we'd definitely need someone good with pcb design (I've only dabbled in laying out custom pcbs) and electrical engineering. Surely someone here does that sorta stuff for a living.

[mid_life_crisis]

As Mr. Neutron pointed out, this discussion should move to a different thread.

[Robftss]

Originally Posted by mid_life_crisis

Some of us have the right background to be interested in experimenting with making our own controllers. Can you tell us what motor is used on these so we can do some research?

The motor has no part # or model #, it is completely custom after many iterations.

[Robftss]

Originally Posted by Calum

Rob, thanks for posting. I didn't realize you were reping the company, glad to have you in the community.

How many deep cycles are the batteries capable?

Is the controller capable to recharging more then two batteries? (I know the alternator also needs to be able to supply the current, I'm just asking about the controller.

Any thoughts on the flow rate that could be achieved with a 36 volt system?

Thanks Calum!

The batteries are more of a 'cycle' use than deep discharge. The VW is 14 months with no degradation.

36 volts really is a different beast. Of course I've worked on higher voltage of various battery types, higher voltage units will be primarily to increase max flow not pressure.

I hope to do my Wk2 SRT8 some day

Rob

[neutron256]

Originally Posted by mid_life_crisis

As Mr. Neutron pointed out, this discussion should move to a different thread.

Taking my own suggestion I've started a new thread:

http://www.ft86club.com/forums/showt...02#post1056302

I'll be updating it with some of the details/ideas I've had later.

[Calum]

Originally Posted by Robftss

Thanks Calum!

The batteries are more of a 'cycle' use than deep discharge. The VW is 14 months with no degradation.

Exactly as I suspected, but it's certainly good to hear of experience. Thanks

Originally Posted by Robftss

36 volts really is a different beast. Of course I've worked on higher voltage of various battery types,higher voltage units will be primarily to increase max flow not pressure.

I hope to do my Wk2 SRT8 some day

Rob

Why is that? Is the compressor limited in it's pressure ratio? The motor not able to output the torque at the upper rpms?

And another question, what kind of current draw are you seeing with the present configuration? I'm wondering about circuit breaker sizing.

[s2d4]

Originally Posted by Robftss

The motor has no part # or model #, it is completely custom after many iterations.

Bleh, I can barely imagine the amount of work to come up with a full custom motor.... Starting would be an exponential curve even if I am an EE but dealing with HV mostly.
Again, great job on pioneering the setup and working with the guys on here, I can't wait to see where you take it in the future.

[Robftss]

Originally Posted by Calum

Exactly as I suspected, but it's certainly good to hear of experience. Thanks



Why is that? Is the compressor limited in it's pressure ratio? The motor not able to output the torque at the upper rpms?

And another question, what kind of current draw are you seeing with the present configuration? I'm wondering about circuit breaker sizing.

Since PR is a multiplier, higher flow engines don't need higher boost, they need lbs/min. Higher voltage components are costlier.

Circuit breaker? Like for an RV? I de-rate through logic and software.

Rob

[Calum]

Originally Posted by Robftss

Since PR is a multiplier, higher flow engines don't need higher boost, they need lbs/min. Higher voltage components are costlier.

Circuit breaker? Like for an RV? I de-rate through logic and software.

Rob

I think I may have miss understood then. I'm wondering if the present setup could work with 36 volts in an effort to get more up top. With the right controls I think it would be nice to be able to run a constant boost pressure so that the system could keep making a flat torque curve. But you say that running higher voltage wont work for us, so I'm wonder why. Is it because the compressor can flow more, but can't create more pressure? Or perhaps is the motor capable of higher speeds, but not more torque?

And I'm wondering about a circuit breaker for safety. Something like the ones I use for stereo installs. http://www.delcity.net/store/High-Am...akers/p_167861

[Tromatic]

What's the lowest throttle setting so far? I went fora drive today, and I doubt I reached 80% throttle at all.

[CBR600RR]

@Robftss I think it would be great if this system could tie into the ECU somehow and activate at a selectable RPM.

As we all know the shift light built into the car can be adjusted to activate at a range of RPM (I am not sure of the full range) but lets say from 3000-7400. I think it would be ideal if it could tie into this somehow.

With the E-charger having the ability to activate at any selectable RPM it would make it so the system was easy to essentially 'turn on and off'. It would also allow full throttle application lower than the selected rpm without the E-charger activating. It would also allow the system to activate when not at full throttle.

It would allow for a lot of adjustability.

[Wild Weasel]

Originally Posted by Tromatic

What's the lowest throttle setting so far? I went fora drive today, and I doubt I reached 80% throttle at all.

Ok... this is an interesting question, because it ties into some of the things we discussed much earlier about intake restrictions and what not.

You're asking about the lowest throttle setting, so I have a few questions for you. Why are you interested in lower throttle settings? Since you doubt you even reached 80% throttle, you obviously didn't need more power. If you wanted more power, you'd have gone to 90% or all the way, right?

Now you seem to be wondering whether this might come on at lower throttle settings. What would you gain there? You obviously didn't need more power, as you had power to spare as it is.

Do you see what I'm getting at? If you're not going to full throttle, then you're not using all the power you already have. Now, if you DID want more power, then you'd be giving it more throttle, and if you got to the end of what you'd have normally had, this gives you even more.