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And done. Did a first test run at 100% on 6S. Basically cooks the batteries but it does seem to work well.

Working on the other side now, takes some time as it’s removing a large chunk of aluminium. Tomorrow I can probably finish the motor mounting holes and start testing.

The thing is, it’s already noisy when I spin it by hand, and while I would expect the mass of the compressor wheel to rotate for at least a few seconds, it stops within a second. It’s also impossible to remove the back cover without using a hamer, I’m afraid it simply does not have enough...

Belt is in, got to about 5000 motor rpm but then got scared of the 3D printed motor bracket vibrating apart. Working on the aluminium version now: Finishing the other side tonight, I hope. My current 6S lipos are also starting to show their age, so getting to max rpm on 6S might not be...

I didn't, thanks, that was a very interesting thread. Looks similar to what I plan to do. Got the motor controller, motor and BMS in. Still waiting for my belt, but made a quick test setup using a 3D printed TPU belt and 6S lipos. That was very very sketchy, but allowed me to get to about 3000...

What worked for me was dropping the “high efficiency machining” and just doing 60-80% stepover with 0.5 mm DoC and high feedrates. Yes it will wear down (but so far they're fine) the cheap aliexpress endmill at the tip, but it’s fast and easy on the machine. Having great results with that.

This one has got a 200W spindle @ 12krpm and doesnt seem to have any problems with aluminium. It’s not super fast, but I’m removing about 2500 mm3/min while roughing, which isn’t too bad. The community firmware hacked a 3D probe into the workflow, that has been great, makes everything so much...

Started to work on the motor mounting bracket. More or less the first “real” thing I made on my desktop CNC, really happy with the result: Also: - ESC + motor should be in somewhere in the next two weeks - BMS is also on the way, went with a JK BMS 300A variant - 24T pulley is in - Need to...

I would add additional protection in this case, yes. And I would go with a Victron solution which is pretty well known for the quality of their stuff. It's still risky though.. You would say that a modern car has some form of voltage clamping on their 12V system, a sudden disconnect of the...

You've got a sensored connection between your motor and ESC right? This should allow you to log the motor temperatures, did you check those? Please note that the magnets cannot really handle high temperatures, and it will demagnetise them as a result. Probably good to check this and maybe...

That’s a feature in a RX-8, built in cup heaters. People using the stock cat will know. They get very very hot.

Are you creating those graphs using a "road dyno" by the way? If so, could you explain how you're doing this? Would be nice if I can do the same once I have my setup running, sometime in the future. Or do you just have easy access to a normal dyno?

Some solid gain! How much PSI was this? Looks like this is more or less the maximum you can squeeze out of the MAX4 / 70125 setup. Would the next step be a dual motor setup :D?

moved to your thread

Sounds like a TorqueAmp solution might work for you if you don't want to go the DIY route. Otherwise you would need to source a battery, motorcontroller and turbo which needs to be modified, yourself. Most of us go with a P2 supercharger as it's relatively cheap, moves a lot of air and is easy...

I really wanted the VESC solution to work, it looks great. Decent hardware, CAN communication, so many settings to play with, diagnostics etc etc. But after reading Alex his experiences and also the VESC forums it seems it simply not that stable yet, missing the basic features and not really...

I was afraid this was going to happen eventually, thanks for letting me know. I'm currently looking into taper lock pulleys to prevent this, but that might not work perfectly since the shaft has a flat spot / d-shape. Also, the minimum tooth count would be 24T. @brettus8 what would you say is a...

Simple answer: It does not ;). Parallel connected batteries are exactly that, connected in parallel with as little resistance as possible. They "keep" each other "balanced". The balancer is balancing the average of the parallel connected cells. It's the reason why I generally do not like...

Made some mockups today before making the actual brackets. Not entirely happy yet, bolt pattern is a bit weird, it isn’t using a circular pattern for the M10 (?) holes. And the pattern doesnt align with the belt cover pattern 😅. Tried to add a belt tensioner but needs some more tweaking. The...

Found out that in my case the friction was mainly caused by the cover for the rear bearing being too tight. After untightening these bolts the impeller spins freely again.