Cheap Motor Supercharger With a Pneumatic Sander

Hello,

In this instructables I'm not going to do a detailed tutorial on how to install a supercharger.

I will give you tips for making a volumetric compressor at a lower cost and tips for adapting it more easily!

Supplies

You should know that some superchargers operate on the principle of an axis which rotates eccentrically with vanes which compress the air.

Judson made one like that which was mounted on the VW Beetle

now the important information is that many pneumatic tools work according to the same principle!!

on the compressor, it is the heat engine which drives the axis and the vanes to compress the air and send it into the engine.

on pneumatic tools, it is the compressed air which turns the pallets and transforms the whole into a motor.

for my assembly, I used an old Georges-Renault sander that I modified

for the rest of this instructables, I used the TPU filament to make the seals and the intake manifold

there is also a bit of CNC because 3D printing is limited in strength for mechanical parts

Step 1: Transformation

for processing,

it is necessary to determine in which direction the air enters and leaves the compressor depending on the direction of rotation that will be used

it will be necessary to create a plate with the air intake and an air filter on one side and on the other, a sealed evacuation pipe to connect to the engine

it is also necessary to provide a solid fixing to adjust the tension of the belt which will be engaged on the engine

for the evacuation, I modeled a tube with a bead which comes into the CNC machined plate

by tightening the plate it seals the tpu tube which crushes enough to be well sealed.

TPU holds hydrocarbons quite well and can be very practical for making mechanical parts that are not directly linked to hot parts

i use autodesk 123D design for this project

Step 2: Adaptation

for this part, it's up to you to determine where and how to install your cheap supercharger

you can use 3D to print prototypes that will allow you to make a perfect set-up

then if you have a CNC or if you know someone who can machine your parts, you will already have the perfect models to redo in aluminum

you can try to use only 3d, it can surely hold well but a vibration environment, fuel and heat will quickly degrade the plastic

Step 3: Conclusion

You have to keep certain things in mind:

-the vane compressor is based on friction and therefore there may be faster wear than on a conventional and current supercharger.

if you suck the mixture from a carburetor, it will lubricate the vanes

if you blow into an injection, there will be wear and regular maintenance to be done.

on classic vw beetles this principle remains used anyway.

then regarding my assembly, I installed it on a 2 stroke....

it's not yet efficient... (personal technical challenge)

on the other hand, the gasoline-oil mixture sucked in by the compressor lubricates it

on a 4 stroke dirt bike it can be effective

for adjustments, you can use 3D printed pulleys because they hold quite well but you will have to replace them later with real aluminum pulleys which will be much safer