its a supercharger kind of idea, i was also checking out some cut-open pics of normal superchargers.

i was amazed by the simplicity of these P/A's, it is possible to make a working one yourself, isnt it?

I have the tools and welding experience, so i might give it a try.

i dont want to start build a turbo charger, because i have to make 2 rotors and crap like that.

Also, the pic i included shows a pretty simple, but working idea too.

Only problem is to make the "vanes" leak-free...

 

By the time you end up with something that might actually work well, you'll have spent far more money than buying a blower, and wasted so much time it wont even be relatively funny, well to some of us it will be, but you probably wont be laughing.

 

don’t take that as an insult, but that can only be read 2 ways: that you’re way to modest of your skills/experience/equipment or you’re too confident of them.

Most superchargers used on engines are relatively simple designs but once you work in tolerances and design issues they become rather fussy to build from scratch. In the case of the setup in your drawing, dynamic seals are a PITA to deal with and these things will either not seal well enough or produce too much friction to be effective. Secondly, packaging will most likely end up an issue since it will have to be quite large.

If you want a good example of this take apart a stock, f-body air pump… it’s the same design, and you’ll be surprised at how big/heavy the thing is for the relatively small amount of air that it moves, and how much friction the internals have for something that wasn’t even designed to maintain a good enough seal to build significant boost.

 

Perhaps I'm a complete idiot once again but doesn't a supercharger work at rpm ranges of tenths of thousands? Even though the principle might be simple that speed takes a lot out of material and construction... you don't want to build a new charger every 20 miles do you?

 

The RPM's of the super charger depends on the type.

 

well okay, lets dump this idea.
sometimes im just to confident, ill just forget this idea and concentrate on this drumbrake-rear axle (dana 60) from a dodge w200, that i want to convert to a discbrake- camaro axle.

lots of measurement and welding!

 

I have seen people (on the net) that have created electric blowers and they claim that they work quite well. Of couse you do not have the variable boost that you have with a mechanicle blower, just on and off.

 

the rpms that you would need to spin that thing at to get boost would send it flying apart.

 

Wow, I'm still building my precision instrument set. I don't have nearly all the welders I want and certainly not nearly the experience I'd like and my backyard foundry isn't near big enough to cast housings that big... yet. You must have a hella tool collection!


Yes as you have figured out it's a whole lot more involved than you think.

Still haven't gotten that monstrosity of a rear end done yet?!?I thought you had finished it already.

 

His last post in this thread was a year and a half ago. I thought I read somewhere that he got the big ole rear end in and it worked great.

 

Holy crap!! I didn't even see the date! So it didn't fall off into a million pieces?

 

no, actually it finally works (at a safe way!)

brakes work great, build a complete ladderbar system and changed the yoke so it would fit the driveshaft.

Last time ill ever do a mod like that, but i must say it drives great.

Allthough this camaro is just for some 1/8th mile races.

 

still working...im stunned...

 

Hey, I have a T-60 turbo housing and impeller (compressor side only.) If you want to revisit the home made supercharger project, it would be a great way to start; you would still have to build a gearbox, mounting brackets, pullies, get bearings, ..., but at least you wouldn't have to try to machine a compressor housing / impeller. I'll sell it to ya cheap, send me a PM if you are interested

 

I'll give you an A+ for ingenuity.

Unfortunately, you won't be able to get what you are looking for in performance out of it.

Here is an idea... if you are reaally interested in going with a power adder, check the salvage yards for an SSEI Bonneville and obtain the supercharger. That is a much better foundation for a power adder if you are looking at cost control in your project.

 

The picture you posted is of a vane pump and is more efficient then a spur gear pump, (which is the equivalent of a 'rotor' supercharger). If you're familar with supercharger rotors, you know that there are only 2 or 3 sealing tips, and for good reason. This 'vane' idea would wear extremely quick IF you could seal it. Also note that vane pumps are usually for liquid, not gas.

Overall, it IS possible, but if you reduce the number of 'vanes to possibly 3 or 4, (and had some phenomenal machining skills), it could be fabricated.
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Actually, I thought about it some more, and they can pump gases, but usually require lubrication. Vane compressors are used in A/C compressors and air compressors.. which both have lubrication for the sealing tips.. anyway.. some insight.