You are putting more on my shoulder that there really is, I will not be interrested in that technology personnaly as I track my car, so more conventionnal technology is more for me, but that doesnt mean I do not find this application interresting, for more casual user.

I do not know if you are implicated to some point in engineering, but there is lot more than just looking at somebody else finish product and say I copy it without a sweat and good research on your side.

I do not think anybody have said/or think that it was not Rob's that start this thinkering. Just said a rip off was little harsh word.

Not to start a flame war, but I did not see a lot of info about Rob supercharger, maybe I have miss it, but I would like to see real spec, like pressure/CFM, duty cycle, temperature/efficacy, an so on.

So for me, this concept still have to be proven.

That's all fine. And it's great. Education is key.

But be HONEST and on your first post in this thread, Edit it to thank Phantom for the motivation, idea and DAMN GOOD proof of concept, link their site, and Fentons build.

It's the right thing to do.

Have you read through the original post? I do give them credit and say the reason I start the thread is because people were interested in their supercharger. In addition I make it clear that the goal of the thread is not to try an make a commerical product. As for a link, it's been there since the original post. First in the list of links.

How is that anything but honest?

That's quick, harsh and shortsighted

More Cute Bandwagon Jumping Open Source projects

• Android (make any calls lately? how about your friends?)
• Apache, MySQL,GNU/Linux (powers this website, it's server, & most of the web)
• Firefox & Google Chrome (IE much?)
• OpenOffice/LibreOffice (Since MS Office was here first, I guess they shouldn't have even tried).

Demanding credits of any of the above? Doubt it. I hope you're being consistent in your thoughts critique and usage.

Finally Nothing comes from nothing

The idea is that the compressor is running alot less then all the time. The times that the compressor isn't running the batteries are being charged. The original thread about this stated a 8:1 ratio for discharging into the motor vs charging the batteries.

@Toma
Personally I'm here because I'll learn a lot about technologies I'm curious about.
You're also missing the point that Rob has no interest in developing his product to the point some of us want it. That leaves us no choice but to try to do it ourselves.
I was over there championing his idea from the get-go but I want more than Rob is willing to invest in because he considers it either unnecessary or not cost efficient.
We can't buy his compressor at this time and design our own controller to work with it, so we have no choice but to make our own.
We're not ripping him off any more than he ripped off the first guys who made electric superchargers. He thought he could do it better so he tried (and apparently succeeded). Maybe we can do more than he is and get what we really want. We won't know until we try.

^^ this /end argument

moving along, where is this band wagon at, I want to go for a ride!!!

Hardest part is the motor that drives this wagon. Rob is using one that has gone through a few stages of evolution to get to where it is.
There may not be anything that is exactly what we need off the shelf.
There are some high revving, powerful motors out there. The problem is finding one that will do everything we need and survive under the hood of a car.
Rob had to develop his own.

Okay, back to topic.

Disputes aside I really want to thank @Toma , and 200hp/tonne for input on motor selection. This has been a big help and I think I may have decided on my motor.

The Turnagy AquaStar T20. This water cooled monster is particularly nice for experimentation since it has two wiring options 128A@ 730kv or 229A@ 1280kv. It’s 41V max but at 1280kv that gives me some flexibility to run it at a lower voltage and still get some good speed out of it.

Opinions? I’m no expert on RC motors so your input if valued.

Specs:
RPM/v: 730kv @ "Y" config. / 1280kv @ "Δ" config.Max voltage: 41V (11S)
Max Current: 128A @ "Y" 730kv / 229A @ "Δ" 1280kvMax Watts: 5280w
Resistance: 0.0132ohm @ "Y" 730kv / 0.0046 @ "Δ" 1280kv
No Load Current: 3.2A @ "Y" 730kv / 4.2 @ "Δ" 1280kv
Can Diameter: 56mm (actual motor diameter) Can Diameter inc. Water Jacket: 63mm
Length: 102mm
Shaft Size: 8mmWeight: 971g

looks awesome, but the liquid cooled part seems overkill for something that isn't on all the time.

I agree given that this will be running for <30 sec at a time so I'll probably need to do some testing. I think the water jacket is removable so it may be possible to run it just fine for short periods without water cooling.

If I'm going to run it at the full 41V I also need to decide if I'm going to stick with my idea of using ultracapacitors instead of SLA batteries. 41V @ 229A is going to need a big set of caps to drive it.

Given that it is designed for boats, it seems safe to assume that underhood moisture will not be an issue.

I've posted this before, not sure if it was overlooked or if none of the motors had good enough specs. Just in case, I'll post again: http://www.neumotors.com/Site/1500_series.html

I have looked it over. Some good motors but none seem quite up to the task.