Just finished the first round of high-power testing with the Hobbywing/Castle setup. We hit 9.5kW continuous and everything held up fine. If we can get to 13-14kW I'm sure it'll support 650hp. Our tests today show the current setup is good for 550hp at about 5 psi. Video coming soon.
It was a black friday sale. $625 is the regular price, and honestly, still a good deal. I just took a quick look and GaNFets and they look to be a potential game-changer. I wonder if the reverse conduction characteristics might be a problem for ESCs and the associated back EMF.
Every night I put in a few hours cabling/setting stuff up for the test. I've got power, control circuitry (but not cable - I'll make that tonight), current measurement & rpm measurement worked out. Just need to extend the RPM sensor.
I discovered a few interesting things:
- The Kemet Caps I...
Unfortunately, the VESC just doesn't perform in the real world. I did try running it in BLDC mode too; it just wasn't up to the task. I think a big part of the problem is turning out to be the 6 pole TP motors. That's a lot of eRPM and many ESCs seem to get unstable. WB's ESC did die, but he...
We'll find out. I intend to torture test this thing on video soon. I will say it's a good deal beefier than the small APD ESC; not that that's decisive, but I'm always willing to give the benefit of the doubt. The fliers were downright spindly by comparision (and weighed proably a quarter as...
Hi all - I've been innundated with all kinds of stuff. Life was supposed to ease up by now, but instead things got even more chaotic. But I'm still doing my best to keep up the research on my end. This Black Friday I took advantage of another sale on a P2 supercharger (for those counting at...
Maybe we can get WB Projects to answer - he started from a turbo too. Except for the tiny one, all of my "real" ones started with a supercharger, making things a bit easier, since I was just using the existing bearings.
Unfortunately, we lost a few posts in this thread thanks the the ruzzian hack. But things are coming along; if you follow my youtube channel, you'll know I'm also working on moving, which involves building a barndominium on the Texas coast. Here's where I was a couple of weeks ago:
As for...
That about sums up how I feel too. Though I do think some of the new high C rate LiFePo4 cells are worth looking at (the higher voltage means fewer cells needed), but you'll still end up weighing and costing the same to match what the LTOs are capable of - the real advantage would be more ah...
Glad things are looking up for you WB; MSA - sorry to hear about that - you're not alone - I've been burned twice; one time it ended up ok, another time not so much...
I think my next steps outside of the sledgehammer development will be to see how the VESC plays with the castle motor/belt driven P2 setup, an then try to go with a multi-motor geared setup.
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