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cmoalem is right - it's a T5 belt (he's the first one to discover that, iirc). However, I'm really interested in how your setup works out - it might work better than the castle motor. Definitely keep us posted.

I just went and measured my HOLE. (too easy for jokes...) I must have used a boring head because my HOLE is exactly 1.000 inches. Like to the thousandth. So if your HOLE is smaller than my HOLE, that might explain why your current readings are a little lower. What batteries are you using...

And one final thing - running it without the restrictor is much scarier in terms of violence in the immediate vicinity - give it a shot... :)

BTW - if your test engine replicates the 1" restrictor performance, you can "pulley up" and get more impeller rpm until the battery current and the phase currents start to diverge. In other words, there's more on the "electric supercharger table" if the input current and the phase currents stay...

Just went through it all - again, fantastic work. I love the motor mount in particular, and am curious how your Pi controller works out. I do have a couple of questions - what was your voltage on the run in the video (can you post a datalog screenshot - I'd like to see the curve); I'm also not...

Wow. TBH, I've been so swamped with everything else I've not had much time to keep up with the forum. But after quickly flipping through this thread, I have to say I'm hugely impressed. Love how your setup looks. I can't wait to take the time to read through this in detail... fantastic job!

^88 Fiero is correct. They're expensive (and big) though. I'm locating a cheaper/more compact source for extremely high-output LiPo batteries. I'll be load testing one soon. The brand is SMC.

Welcome. Definitely check out the posts here - there's tons of info. Your goals should be pretty easy to achieve.

Definitely let us know how the APD works out. I've been looking at that one as well.

Nick - It'll work, but if I'm following you correctly, you have to make sure that charger doesn't have a common ground - i.e. that it's isolated. I actually bought a bunch of cheap chargers to do a hybrid of what you're suggesting and what 88fiero is suggesting. I ended up going with a boost...

The P2 is indeed a clone of a Vortech Si trim - there was a court case over it. The only differences being the billet back plate (and therefore drive mechanism) and the P2 has metric hardware (Vortech is imperial). This is from a guy who was involved in the suit and wishes to remain anonymous...

A quick note about C ratings. They're basically BS, because there is no standard way of testing for C ratings. I'll likely introduce my own standard soon enough; not out of hubris, but to give C ratings some sort of comparative meaning.

I personally find it easier to look at things in terms of horsepower; especially since the compressor map's X axis is fairly directly relatable to hp simply by multiplying by 10. So in the above referenced example, spinning at 27,000 rpm and 5 psi, you'd be somewhere around 500 hp. That would...

Actually just outside Corpus, near Rockport. The reason you haven't heard from me was I was busy packing the trailer and then the last couple of days driving down. I'm 160 mi away from there. And thanks for the offer. I'll be checking the forum when I can over the next couple of weeks but I...

I'm a huge Jaguar fan. As odd as it is, particularly the sedans from the '70s through the '80s. Can you post a pic of your jag? I'd love to see it. And I'd have no hesitation using an APD ESC if you want regenerative charging.

There's another member on here who checked out the bearings in his unit and they're not great. They're not actually rated for anywhere close to the blower's Max RPM, but for our actual achievable RPMs I think they're going to be okay. Also keep in mind with my MGM LMT setup, even running with a...

Hytek - I think you hit the nail on the head - once the thing is spinning, it starts to cool itself off. Not what I expected. 88fiero - I don't think it would have any problems. The fan is pretty hyperactive, and it wasn't even on (or plugged in) in that datalog. The OTA module plugs into...

I bought a bunch of a123 cells myself a while ago. They're still sitting around because spot welded tabs and high current don't go together all that well. I've got either 150 or 160 or something (I don't remember) I need to do something with...

Oh - and the belt survived without issues. I ran it for 15 seconds at a time this time:

EUREKA! I just shot the high power, LTO-powered tests with the HobbywingCastle setup. It was consistantly pulling around 315 amps at about 45 volts at the ESC (internal datalog). That, dear friends, outperforms the APD/TP Power combination - it's holding a consistant 14kW! I can't even begin...