seanrot

iTrader: (2)

This looks like it might be interesting. Based on a KKK k26 turbo. Auction link is farther down for more info





Auction link here

rototiller1

JUNK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!

680RWHP12A

interesting, i wonder how fast it spools up and how much boost it will make.....judging by the size of the motor it will be for intermittent use only...i like it

ioTus

iTrader: (5)

yeah that could be pretty sweeet!! I like the idea. but i wonder how powerful that motor would have to be to be able to push the turbine fast enough to create pressure?

dark mephisto

thats stupid

ssglopezvm

Like the idea... however.... How do you control this thing?

seanrot

iTrader: (2)

Hey,
If worst came to worst you could put it inside the car near the driver. That way if your a/c stops working this thing can blow some air you your stank ***

seanrot

iTrader: (2)

Micro switch on the throttle just like a N2O setup.

ssglopezvm

seems decent.... as long as your engine is ported and can be controlled, I dont see a problem.

$350 and going up! Too much I think.

ArrX7ahh

I've seen this is exact same product from time to time over the last few years. Interesting comment about the german instructions. Maybe thats why the price is so high? Perhaps they will part with the turbo thing sans bespoke instructions for less $.

Tanjo

Ive always wondered about this. But theres gotta be a reason why it isnt more popular. Although I hvent been able to come up with one for the past 3 years.

rototiller1

How fast does a nomal turbo spin?12,000 to 18,000 rpm
No way that will spin fast enough!

680RWHP12A

uhh a small turbo like that will spin 60to 80 thousand rpm's so i too am wondering how fast the motor will spin the comp wheel

Manntis

Induction motors are typically rated at 3450 rpm (two pole motor) or 1750 rpm (four pole motor). The rating speed allows for slip from the "synchronous" speeds of 3600 and 1800 rpm, respectively. Universal motors do not have a synchronous speed, but have a maximum no-load speed that depends upon the voltage applied to the motor.

The universal motor's maximum speed is developed without load, while its greatest torque is developed at lowest speed. You see these types in vacuum cleaners, portable power tools, food processors, mixers and other small devices (but not usually under your hood)operating over a speed range of 3,000 to 10,000 rpm.

nevarmore

This will not work and is a bad idea.

This requires electricity to run. To make electricity the car has to turn the alternator. The car turns the alternator with a belt. This device then converts the electricity back to a physical force that turns the compressor. At the very least you have efficiency losses. Every time you convert one form of energy to another you lose some of the overall power.

How is it any easier to turn an alternator than to jsut turn the compressor? It isn't. It gets worse when you consider the strain on the electrical system.

Before anyone asks, no turning an alternator isn't easier than turning a blower. The alternator will have to make more power, you'll have to have a bigger alternator which is going to be harder to turn.

Crit

iTrader: (6)

For intermittent use, you can use the battery as a large capacitor. You don't have to supply the required amperage immediately.

Gregs

a turbo spooling at 12k? what are you smoking?

enigma32

I would argue to all of you, without knowing much about turbos, but knowing a lot about making pressure in general, as I've grown up around pumps of many varieties...

It's not the spindle speed, it's what you do with it

I'm almost interested in the specs on the motor....

REVHED

He's talking about the rpm of the turbo not the engine.

A turbo will spin at a lot more than that. To make any significant boost I think it would need to use some sort of step up gearing between the motor and compressor.

Stoops417

even though this is a good idea... it's very poorly executed. The Day that this can actually be controlled and implemented properly, HKS and Greddy will be propegating them all around the world

wwilliam54

unless its geared. no chance

CarlRx7

i can see it giving you like 1 psi of boost before the throttle plats at idle but as soon as the throttle opens, its not gonna be able to keep up and you will loose powers, like using an airfliter stuck in mud.

now if it could possible keep up with the cfm's at wot the only way it would work if it was rpm sensitive.

Carl

fatboy7

People are suckers, lol... It takes signicant energy to compress the quantity of air that a engine would require. Even if you geared the electric to turn at the 70k-120k RPM nessasary for the compressor to compress the air, I doubt it has the power to actually keep those RPMs up while actually compressing it.

ArrX7ahh

A commutated motor can have very, very high speeds depending on the voltage and associated current it uses. 40K+ rpms are not uncommon. Typical shaft speeds for turbos are near the 100K and beyond range for t3 size turbos, and slower for larger frame turbos.

The motor used looks like a starter motor, which could be of the type used in turbine engines. It could also be the normal ICE starter motor, which usually runs at a no load speed of <10K rpms.

This device may work for a few psi of boost on small ICEs. Its operation would be characterized by very low duty cycles, due to the tremendous heat generated within the motor. It would also be highly inefficient if you use it on a 12v system.

With the proper motor and motor controller, these devices do work, as a preheater for diesels, prespool for turbos (think sequential), and other short duration modes. They also cost $1500.

Manntis

You're forgetting that electric motors are high torque. In fact pretty much every modern freight train uses electric motors to power the wheels.