Connecting the motor to the compressor

[matnrach]

Hi , new to this forum. I have just started a twincharge project. The engine is a a small displacement 4 cylinder running currently with an IHI turbocharger and just want to torque fill at low speed with an electric supercharger. I am planning on using a Surpass Rocket motor with a 5mm shaft at close to 60k rpm. My donor Garrett turbo is on order whose comp wheel I assume has a similar bore size. Could anybody share their method of mounting the motor to the compressor backplate and connecting the motor the to comp wheel? Many thanks

 

[powy]

hi! I am trying the same like your idea, but i'm not finished yet, you can check on the forum 1.8t e-turbo topic. Which motor you have from surpass? i have a tppower 4060cm. The newest idea on the forum is to disassemble the motor, push to shaft out and push a longer one in to get the compressor wheel on it. I will make like that. Which engine do you have ?

 

[matnrach]

Thanks for the info. I will use a 4074 2250kV @ 24V. Similar concept to the Phantom supercharger. The engine is an A series 1380 from a Mini (but not fitted to a Mini)

 

[AlexLTDLX]

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.

 

[matnrach]

Just had a look at WB projects and their last video shows an extension shaft which is exactly how I was planning on doing it. Although I have my own workshop I think I will get it made in my friend's machine shop. He can attain a far higher tolerance than I can as he has all the latest CNC machines.