Electric turbo (one that works)

[dweinhart]

Before anyone says this is impossible, I have already tested this and am in the process of installing one on my own sc400 and it is a good option for for those who do not have skills to make your own exhaust or choose to retain A/C.

I am running a t76 turbo powered by a 12hp(almost 10,000 watts) brushless motor that spins up to 75,000 rpm (t76 compressor map shows that 75,000 rpm flows enough for 700hp) which is powered by a 24v battery bank (2 seperate car batteries mounted in trunk). 400amp Electronic speed controller is used to controller the motor which only comes on at WOT and I use a rpm switch to automatically activate/deactivate turbo when shifting to save the transmission.

There is no lag and will give 100% power immediately I use a servo controller to regulate the speed of the motor (boost level) and a 12/24v alternator charger to charge my battery bank off of alternator. You get about 15 10 second WOT bursts at full 75000 rpm or before having to wait for your batteries to charge. More if you are running less rpm.

Setup is similar to this but with a bigger turbo and faster/stronger motor . Home - TORQAMP The problem with the torque amp is that it does not flow enough for larger motors. I have bypassed this issue by supersizing the turbo, the motor, the electronics, and the size of the battery bank...


Anyone interested in a setup like this should know that it is 400-700hp capable so it requires at minimum both intercooling and supporting fuel mods (FMU/larger injectors/ 255lph fuel pump).

Best part? It is removable and can be used on any vehicle

 

[dweinhart]

20230722_152839.jpg

drive.google.com

20230722_152821.jpg

drive.google.com

20230722_152755.jpg

drive.google.com

In case anyone doubts I actually did this. I have built and installed my own electric supercharger using T72 internals a 12hp electric motor that spins in excess of 75,000 rpm and and created a charging system that will charge the battery bank I use to power it with my alternator.

 

[Cmedsss]

20230722_152839.jpg

drive.google.com

20230722_152821.jpg

drive.google.com

20230722_152755.jpg

drive.google.com

In case anyone doubts I actually did this. I have built and installed my own electric supercharger using T72 internals a 12hp electric motor that spins in excess of 75,000 rpm and and created a charging system that will charge the battery bank I use to power it with my alternator.

20230722_152839.jpg

drive.google.com

20230722_152821.jpg

drive.google.com

20230722_152755.jpg

drive.google.com

In case anyone doubts I actually did this. I have built and installed my own electric supercharger using T72 internals a 12hp electric motor that spins in excess of 75,000 rpm and and created a charging system that will charge the battery bank I use to power it with my alternator.

Hey bro, would I possible to contact you to have a chat about how I could go about setting up this myself? Would really appreciate it cheers.

 

[SRBRANTLEY]

Can you tell me what electric motor you are using?
Thanks

 

[Zuffen]

12 horsepower is around 5KW.

A good Lexus alternator will put out 140 or so watts, so about 7 mins of charging for 1kw. So you need to run the engine or 5 mins to cover 1 minutes use of the supercharger,

Now this assumes the vehicle doesn't have any load on the alternator.

If the car needs (say) 50 watts to run that gives only 90watts to charge the battery. So it's now 11 mins for every minute.

I don't think it would be much good at Pike's Peak!

Please correct me if I'm wrong as I'm fairly sure I've been wrong before. Ask my Wife!

 

[dweinhart]

Hey bro, would I possible to contact you to have a chat about how I could go about setting up this myself? Would really appreciate it cheers.

TP5670-CM is your best bet without breaking the bank.

 

[dweinhart]

12 horsepower is around 5KW.

A good Lexus alternator will put out 140 or so watts, so about 7 mins of charging for 1kw. So you need to run the engine or 5 mins to cover 1 minutes use of the supercharger,

Now this assumes the vehicle doesn't have any load on the alternator.

If the car needs (say) 50 watts to run that gives only 90watts to charge the battery. So it's now 11 mins for every minute.

I don't think it would be much good at Pike's Peak!

Please correct me if I'm wrong as I'm fairly sure I've been wrong before. Ask my Wife!

You are correct that you need a good battery bank to get any real run time. I am running 3 90AH batteries in the trunk. You get quite a few 60 minute pulls out of it which means in normal driving you never run out. On a closed circuit race track you most definitely would

 

[dweinhart]

For anyone who wishes to duplicate this, you will need: 1. Turbo of your choice (the largest you can find since lag isn't a thing), 2. TP5670-CM motor with 8mm shaft, 3. 400AMP capable ESC, 4. a BEC to provide power to your ESC AND a way to control throttle of the turbo. You can use arduino or if you are cheap SOB like me, you can buy an RC remote controller, take out the finger throttle and just put it under your go fast pedal. Take the remote receiver that comes with it and plug in your motor and your BEC. Yellow wire is signal. Since remote requires batteries, I just got a voltage modifier online so I could use a 12v wire from car instead of battery pack in the remote to power throttle switch.
To modify turbo, just take off compressor housing, impeller and backing plate and throw the rest away. Drill out impeller to 8mm for motor shaft and make sure backing plate hole does not touch shaft either. Finally, remove front plate of your motor and find a way to attach it to your compressor backing plate. Once turbo compressor and motor are mated, you just need to worry about powering it.
Due to the power requirements, you will need welding wire if your batteries are in the trunk. A 9s TP5670 will run on 3 batteries since that will give about 36V after voltage drop. Run the wires from your trunk up to the motor. You will need a high amp voltage battery cut off switch to place between the battery and your motor so you can arm from inside the car . I used this but there are other options

 

[dweinhart]

Finally, for charging, your batteries, you will need a 36v charger similar to

 

[dweinhart]

To convert your 12v to a 36v charger, the best I could find was to run an invertors since there was no economical 12v-36v 18amp charger available. So you run 12v to 110V with correct amp requirement and run your 36V charger off of that

 

[dweinhart]

Hey bro, would I possible to contact you to have a chat about how I could go about setting up this myself? Would really appreciate it cheers.

[email protected]

 

[dweinhart]

ou get quite a few 60 minute pulls out of it which means in normal driving you never run out. On a closed circuit race track you most definitely would

I meant 10 sec pulls obviously...not 60 sec

 

[P Bateman]

I'd be interested to know:

• How much boost does your setup make
• Has the car been on a dyno and what was the result
• Does the half turbo, intercooler and piping make any noticeable restriction when you're off boost?

 

[Spinnetti]

Technically this is an electric supercharger rather than Turbocharger. Audi did this in production, but they run it on 48v I think. All engineering is a tradeoff and lots of things are possible but all depends on the end goal and design constraints. Deep dive: Here's how Audi's electric turbocharger works