Easier/Cheaper DIY Electric Turbo - 400 Amps!

[nhbountyhunter]

Thank you. People always say it takes over 100hp to turn a supercharger. The myth is it takes 140hp to make the 12psi a Hellcat has. That electric motor in this setup is like 20hp at max. You are making close to that (horsepower) in your V1 setup on a car. It also proves people wrong that say turbos make boost with "waisted energy." This is a "turbo" or centrifugal compressor. In no world does a motor just waist 20+HP pushing exhaust gas is out of a naturally aspirated engine. If it did the amount of air coming out of the tail pipe would be tremendous (engines are also compressors / air pumps). But when you put a hydraulic motor in your exhaust that must overcome resistance (compressing air) the motor then needs to take some power from the power stroke to PUSH exhaust gasses out the opposing cylinder. Work is not free. Energy needs to be spent to produce work.

[Alice.]

Very, very interesting. Electric turbos are going to be the near future! Keep up the great work!

[projectdiyengineer]

Can't wait to see it in action! Im glad to see that belt held 400A

[M-oneeleven-M]

I know absolutely nothing about electronics, but I'm loving this! I really want to see it succeed man such a cool well built project. This is the future for Turbo's 👍

[jadzz]

The floor had to be super clean now lol right on man seeing those power numbers is insane

[oliverscorsim]

Greek to me it I'm so excited to see this on the Dyno

[RouteTrucks]

Loving the progress. You are a far smarter fella than me. That computer stuff makes my head hurt. Although a electric compressor on my big block square body would be fun indeed. Push button axle breaker.

[ryano]

Do not use FOC, try using a larger, lower KV outrunner and more esc. Love this stuff!! Thanks for sharing!

[consciouscool]

Porsche just made one, Magneto Marianelli did one for F1. Call the impeller company and ask what the unit specs are and measure the speed of the impeller. Maybe the procharger supercharger profile would be best. There is info out there regarding this idea to use as a stepping stone. Good work anyways.

[turbotunna]

See it explode!?? Ohhh, there's so way I want to see this thing blow up! I want to see it run your 32, 000rpm all day long without a worry!

This was a major win - you ironed out some big bugs! Great stuff and well done!

[FirstLast-txyj]

Love it man!!
I was excited to see the max psi on 400 amps though

[jeremyphilander]

3 other potential improvements. Remove cone filter. Put a pipe extention on it 300mm or more, air entering the empellar is hitting it many angles with your current setup. #2 is to use 24v instead of 12v. And to do this is easy, put the battery in series. #3 is to use 2 turbos in series, meaning one feeds the other. Happy testing.

[robbioe]

damn, I didn't know what inductance meant until this video. This is cool

[thomasward]

I think if you mounted the boost gauge remotely with some rubber hose it would dampen the needle so it could be read a little more clearly

[MrLunithy]

The joys of lifesize RC :) Ive always wanted to try a large EDF fan from RC air craft some of those have crazy flow rates and Hobby grade ESC's are far more advanced than most people realize.

[jonathansanchez]

I really like how he has the observation deck perpendicular to the axis of rotation. #SafteyFirst!

[turbogodstoys]

Please use a way larer air filter and a gauge in the end of the filter to see vacumme u have.. u can see when coming off the load the filter reswells indicating a large restriction

[yankeedoodle]

1:00 the current isnt your enemy with inductance, its the voltage. V = L di/dt is the formula, henrys and rate of change are your factors- now imagine battery current going from max to zero in sub fractions of a second. all that energy goes from current to voltage (poential)... and if your motor controller caps(or high side fets) are rated to 100v and they see a 250v spike, they pop. worse, if they pop when theyre closed.

[maliciousmushroom]

Do you think the inductance, and subsequent spikes are what caused the last ESC to let out the magic smoke?

[MrPizzaman]

I'll put my experience out there of running brushless motors hard. I have used a 350w, 800w and 1500w Himaxx (high quality) brushless motors for some combat robots and for starter motors on briggs and strattons. For the 350w motor, I found I could run it at about 1000w for 10-ish seconds before it would start smoking as a starter motor when heavily loaded. I was using high quality Castle Creations 80A airplane ESC's, but relatively weak A123 M1A cells, though sometimes used some Lipos. I hadn't really pushed the 800w or 1500w motors as hard compared to the 350w motor, but I can tell you they put up to pretty much endless abuse turning over high compression 148 cc briggs and stratton engines (12:1 compression ratio). I used two 800w motors for about a decade each (one for the starter motor with 1000's of cycles on it and one in multiple combat robots for their weapons in many different robot chassis).

The original Mamba Monster 1/8th scale RC car ESC + motor combo (essentially a 1515 1Y Neu Motor) is rated for 1250W continuous and 2500W peak, so a 2x multiplier. They claim a max amps of 73 amps on it while being used with a 6s lipo. The ESC was advertised for 300A for 10 seconds back in 2007. I can say this combo has pushed my 15lb RC truck to some extreme speeds and allows it to do a standing back flip while cruising at 60 mph... which is just plain nuts. Today they sell the 5th scale version (Mamba XLX2 and associated 2028 motors) which is very similar to your motor I believe (~800 kv, but 8s max), but is designed for 10 hp+. Made in the USA and has historically had the world's best customer support. I know they have a division for people doing non-RC stuff.