Turbo speed sensors now in stock

[The Wookie]

We are now stocking speed sensors for turbo shaft speed measurement.

Sends out a 5v square wave and works with most aftermarket ECU's and loggers.

Have personally tested them with

Motec

Autronic

AIM (dash and logger)

AEM (semi-sucky cannot read direct must apply math in logging software)

Should work with any high speed digital input that will accept a 0v-5v square wave.


Self contained, 3 wires (regulated 5v ref, sensor gnd, digital signal out)

Kit comes with sensor unit, 2 nuts (high and low), connector and terminals, and instructions.

Compressor cover must be machined for install, this service also offered, but if you have access to a mill you're golden.

[The Wookie]

http://i163.photobucket.com/albums/t313/GrocMax/2009_02040002.jpg

Sensor kit



http://i163.photobucket.com/albums/t313/GrocMax/2009_02040003.jpg

Typical install.

[Marco]

I'll take 3 how much :)

[Bladerunner]

I'll take some too send me a email bud .

[The Wookie]

I'll take 3 how much :)

Special price for you only from Forced Penetration! :D

I turned email on.

[Bladerunner]

Yeah Marco loves sensor inserting !!

[Marco]

One of those was for you!

[hal]

Are the install instructions available for download?

[The Wookie]

Are the install instructions available for download?

Yes, its on old-fashioned, dialup, verbal DL on extension 106 ;)

[The Wookie]

Ask questions here, answers are accessible to all.

[DragTalon]

Cool idea, although do you attach anything to the compressor wheel or how does it monitor the shaft's speed? What does it read in? RPM's?

[The Wookie]

This particular sensor is designed for non-ferrous (aluminum or titanium) compressor wheel blades down to .016" blade thickness. It 'sees' each blade as it passes over the head of the sensor. Nothing is done to the compressor wheel.

Data display form is up to the particular ECU. The two most common ways to use it are shaft RPM, and angular velocity (wheel speed, RPM x diameter).

With a couple other sensors you could make compressor maps.

[Bladerunner]

One of those was for you!

On the rally cars they use to map the car right to the point of overspeed . Really do help see what a turbo is really doing .

Cheers bro . Motec has them on back order here so we need them semi fast for the EVO-X test car.

[hal]

Yes, its on old-fashioned, dialup, verbal DL on extension 106 ;)

:P

I just wanted to see if the machining effort was within my skill range without having to consume any ones time.

[The Wookie]

:P

I just wanted to see if the machining effort was within my skill range without having to consume any ones time.

If you can find the center of a hole and your mill head tilts to 45 degrees you got it.

[9sec9]

Is this the same thread pitch as the Garrett unit? .5 I think. I have several housings already drilled and tapped. One of my units hasn't been returned by a friend, so I could use an extra. Also, you don't happen to have the maths available for the AEM do you. I created the maths on AEMLogger, but the live parameters display didn't look correct. I'm not too sure if the Logger will display it differently than the 'parameters' live display because the maths is in the 'logger' side. I think i've got 480/(14*1E-6*t4per) with 1E-6 being an exponential. does that appear correct? The live parameter display was showing between 500-900 at idle, which can't be correct because the gauge was showing about 7000 rpms or so. It looks like it may be off by 10x, but I'm not too sure, since I'm just now setting it up in the aem. Any help would be appreciated.

[The Wookie]

Tom-

Can't display live data correctly on the AEM. Maths have to be applied.
t4per is the period of t4 so 500-900 is microseconds.

480/(14*1E-6*t4per) should be correct for a 14 blade wheel.

[Public Enema]

Ask questions here, answers are accessible to all.

A/S/L? :asshole2:

[Dennis F]

What are the benifits of using one of these sensors?

If I know my FPWhite will flow up to 48 pds pr/min, I could see this in datalogs. How would one of these aid in tuning?

[Bladerunner]

It can help plot a blade speed vs boost vs rpm . On evo turbos its not uncommon to see 140,000rpm @ high engine rpm on a 32mm restrictor motor. Not sure if Rob @ Forced has posted some turbo speed graphs before ? Maybe someone can remember where they are .

[The Wookie]

We've had a 1580 past 180K before, but not on a restrictor.

Turbo speed during a surge event on an Evo9 1580

http://i163.photobucket.com/albums/t313/GrocMax/1580surge.png

[9sec9]

Tom-

Can't display live data correctly on the AEM. Maths have to be applied.
t4per is the period of t4 so 500-900 is microseconds.

480/(14*1E-6*t4per) should be correct for a 14 blade wheel.

Thanks "WOOKIE", I thought I had it right, but when it didn't display correctly, I only had 2 choices, either it doesn't display in live mode, or I've messed up the maths. Now, I assume the sensors are the same then with the units I'm using?
Thanks again for all the help.

[9sec9]

As for the benefit of using a turbo speed sensor, It's one of those things you immediatly like to look at when your changing your boost or the atmospheric conditions are changing. I now don't want to run without it. Even on the new HTA86 we're running. I can't wait to log the shaft speed vs boost in the AEMlogger. Sounds like I've got it working and now I'm ready to take it out for loggging.

[9sec9]

Dennis F, since you can log the shaft speed, you can take the turbo to an exact rpm in it's efficiency range and possibly keep it exactly in it's highest efficiency for any given engine rpm. The turbo may easily make say 35 psi at 5000, but to have an ebc keep it at 35 may way over spool the turbo. You can drop the boost to each 'most efficient' island as the engine rpms come up and the boost falls. I'm just getting into actually logging the turbo, although we've been using it for several months by way of the Garrett gauge. Hope I wasn't rambling.

[The Wookie]

AEM suckyness fix-

Sensor mfg just got back to me, you can attach a B+ pullup to the sensor output, at least 10K ohm, higher is better. The AEM takes 4.25-4.5v to trigger its digital input from off to on, and with gnd voltage drops and noise present input triggering can be sporadic on the speed inputs with a 5v device.

If anyone orders one for an AEM, I have lots of ECU terminals for 2G/EVO, request one and I'll throw it in. This way you can crimp the end of the pullup resistor onto the input pin along with the wire.