What I didnt talk about was the turbo is nearly finished, and, thus far a complete success..
A few weeks ago I machined the front and rear ceramic bearings into the turbo housing. I have the shaft now and it rides in the bearings...
All I need to do to finish that is get a thread drilled into the cetner to bolt the impellor on and its compete..
Still, I did a function test where I fitted the shaft (minus the impellor and top half of the centrifuge) and ran my 20,000 RPM motor in a 2-1 ratio with 2 plastic gear cogs onto the shaft.
It span at full whack for over 10 mins before the plastic gears shot into shards and stripped. But, the impellor shaft was still perfectly set and had developed no play, and the bearings were not even hot.
I did realise however that gearing or belts wouldnt last on that kind of setup, its simply too fast for any kind of plastic to be involved.
So, I decided to instead mount the motor off the back of the turbo directly connected into the impellor shaft, this will eliminate anything complicated.
I will be stuck @ 20,000 rpms but I still think that itll give me between 1 and 2 pounds of boost.
Not only that, but itll cost me nothing to get it conected to the car and ran from the mains. The simple test for the first stage is this -
Connect it into the cold air induction, set the revs on the car to 3000 and then throw the switch with it plugged into the mains.. if the revs climb I am generating boost. If the revs dip? Im not, simple.
Then try it at more or less revs, taking down any gains or losses (this is important because I will then know the roll off point and where and where not to have it spinning).
Here is the motor, its quite a beast and has more than enough torque to spin up not only the shaft but also the impellor (I weighed the shaft and impellor then bolted lumps of metal to the motor to see how it got on, it created no noticable lag
)
Tomorrow I will have the impellor on, and the assmebly of the front end all together. Then its a simple matter of connecting the motor to the back fo the turbo (piece of piss tbh) and locking the shaft onto the motor).
I see fun times ahead
