ok I have a question and YES I DID A SEARCH! why cant I take a turbo and remove the exhaust housing and take the fins off that side as well, then have a small pullie added on and then have a seperat shaft with a large pullie on it and enclose this in a box much like the reg. vortec and paxtons look like then have a small alt pullie on the out side of the box when I am done it would be almost the same thing right? I have no problem getting turbos but the hood room in our cars is too limited.

 

One problem I see with doing that is that the shaft is too small and couldn't handle too much pressure before bending, plus spooling them up to 80,000 plus rpms would take a big pully. Dick Datson is working on some type of turbo supercharger prototype. He is on the Yahoo Blowthru message board and I think he is now charging for his news letters on the subject as I have not seen him post since the beginning of this year. Might look into that.

Brad...

 

turbo shafts (non ball bearing) are just suspended in oil, and would probably pull to the side that the belt was coming from and contact the housing. They aren't designed to have the pressure of a fan belt constantly pulling on them. Ball bearing turbos on the other hand, with a gear drive where the hot side housing used to be...

 

i think that you would need to build a gear box that would hook up to the shaft. you cant put any load on those bearings, as stated above, they are not designed for it.

but custom gears are pretty expensive, and your dealing with such high rpms, that the smallest flaw could be catastrophic. it could be cheaper just to get a centrifugal supercharger, which is what your gonna be making

 

I was looking into the idea myself, however, the turbo will not create much boost because turbos must spin much faster to create boost. A friend of mine who is a mechanical engineer told me this. He's a hot rod junkie too. I"m sure it is possible, Anything is possible. If you do a search on the topic, you will find a thread. There is a thread where someone has converted a large turbo into a s/c. I don't remember where? But it was on this board. I would PM that person and ask them. I know that they used a wheel chair to powere the turbo from the belt dirve.

 

what about fixing a huge *** electric motor to it with a gear box and what not. if you can package the entire thing small enough, you could have a boost system that you would only use once in a while.

then you can run on that v8 power that people are in love with when you don't need the boost.

 

Electic motor... bit of info for you. Even a 5horsepower electric motor will weigh in at nearly 100 pounds, it will draw well over 20amps of current, and the motors that big are typical AC current at 220v or higher. The motor itself is considerably large as well, too big to fit anywhere in a 3rd gen engine bay. And that's 5hp, which will likely not be enough power to get any significant boost.

 

typicaly at least i have personaly help a 1.8hp brushless electric motor, that fit in the palm of my hand. of course it was a prototype project, and would cost some BIG $$$$$ to even think about producing.

 

Raiden,

I posted that.

A friend of mine used a gearbox from an electical wheelchair and the compressor part of a huge turbo to build a supercharger.
He has put three years into the project and he is still working on it.

1st problem. You NEED ball bearings because of the sideload from pulley/gearbox.

2nd problem. You NEED a gearbox because the step up ratio between the crank pulley and the supercharger pulley will never give you enough rpm by itself.

3rd problem. You NEED to use a huge turbo compressor to make some boost and still keep the rpm down on the compressor. Otherwise the bearings/gearbox will have a very short life.

And skip the electrical idea ... You can not create power. You need an HUGE alternator to power the HUGE electrical engine needed.


An early design:


In the IROC:


The latest design with shortend gearbox:

 

That LOOKS awesome but damn that is a lot of work to achieve what has been done with a supercharger for a long time.

 

THERE IT IS!!!!!!! TYTYTY!

Yea, when i saw the thread it thought of making one to use as an extra supercharger for my car. My buddy steve said that I would need a huge turbo to get any boost. so i trashed the idea, however, it was really interesting! Thanks for the post!:hail:

 

Yes, it is more to prove that it can be done.

He is building his fourth or fifth supercharger and they are getting better and better. Last summer he made reliable 7 psi boost with it, but now he wants more ...

Bying a new vortech or a procharger would have been much more cost effective, at least if you value your own time.

 

haha, wheel chair gearbox... im pretty sure it wasn't designed for 80k rpm speeds but it sure is interesting! the cost of designing and machining your own gearbox severly outweighs the cost of buying a vortech or paxton blower though.. unless you have your own mill and other machinery...