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Sorry for the delay - I've been having major issues with the place in Texas - the contractors poured the foundation incorrectly (and it passed 3 inspections before it was poured, somehow). It's been all I can do to work, try to fix that, keep tabs on my mom (she's 81 now) and kid, pack up the...

Here's the video:

Low rpm boost will blow up pistons. I have a collection of pistons to prove it, and have even cracked a block (SBF) down the middle as a result. What will happen is your tuning window gets real small, because your cylinder pressure gets really high. RPM is easier on parts (up to a point, of...

I would say 12s should be a minimum requirement for any ESC one would consider for any full-size automotive application. Also, while kv and torque constants can be used as a guide, I wouldn't go by them. Too many variables. In practice you'll find things change. Sometimes by a lot. That's...

I think you could come close to 17kW from the Castle/Hobbywing setup. I'm sure you could get to 14kW fairly easily (you just need to make sure duty cycle on the motor is maxed - which means finding the pulley sweet spot (one advantage of a belt/pulley setup)). Basically you want phase current...

It made 17 more peak hp, but as you mention, the area under the curve is huge. Another thing to consider is the weather was horrible last thursday - it was around 90*; the time before, the ambient was around 65 degrees. Even with dyno corrections, it would've made even more - probably another...

I think LiFePo4 cells would work great - the battery in my car (the 12v battery) is a DIY LiFePo4, 100ah battery and it works much better than the old lead acid battery. MkngStffAwesome on here has done some testing with the headway cells - you may want to try hitting him up.

Well - I'll stay this. I've blown up 2 APD ESCs and no MGM ESCs. And the VESC had major issues at high eRPM. Even Kelly controllers charges more for the same ESC running higher eRPM (they have two additional option levels - high rpm and ultra high rpm). It would be nice if there was a...

FWIW, when I spoke with Speedmaster about their P2 superchargers, the guy told me their biggest holdup is getting the shafts.

Here's a graph of torque (though keep in mind this is a glide, so I don't know how meaningful this is):

We finally made it back to the dyno yesterday. It was an interesting day to say the least. The converter, running n/a, LOST 40 rwhp, but locked up harder and turned 6 more mph on the dyno. And when all was said and done, we made a good bit more power with the Sledgehammer in ~90 degree heat -...

I agree with GTHound's thinking. Extremely high rpm means high ESC switching losses, which limits power in a non-linear fashion. However, WB Projects has had some success using a more conventional turbo on his setup. Though I do tend to side with GTHound on this point, there's still very...

The Castle ESC hasan MSRP of $315 usd, at least from what I can find. LMT doesn't make ESCs - they only make motors. MGM makes their ESCs. You might want to look here...

This is a good resource for more of a deep dive on MOSFET capacitances: https://toshiba.semicon-storage.com/info/application_note_en_20230209_AKX00063.pdf?did=13415

Just wanted to share what I've learned the hard way. Higher motor pole count means higher electrical RPM (i.e. eRPM). Actual rpm is calculated be eRPM divided by the number of pole pairs in a motor. So if you have a 4 pole motor (2 pole pairs) running at 80,000 eRPM, you'd be turning 40,000...

WB - are you coming out of your winter deep freeze? :) I think sensored is preferred - it eliminates a bunch of issues. The LMT motors are great, too - just not easy to get. The biggest issue with the TP motors is that most of them are 6 pole motors (I believe), necessitating a very hgh...

You didn't happen to video any of the process, did you?

Wait - what? Code written by ChatGPT? More information, please - software is my weak spot...

Mine is made from an HDPE cutting board .915" thick.

The problem is without battery current, battery power or duty cycle, you can't calculate actual power input (over any length ot time, anyway) to the compressor. The other thing I've discovered is that a simple hole doesn't do a particularly good job of replicating the dynamics in a running...