Head Speed Tachometer

Head Speed Tachometer


Head Speed Tachometer is used to measure the headspeed of your r/c-helicopter.
The sound of the blades will be analyzed and the according headspeed will be calculated.
Using Settings you can choose between standard (rpm up to 4000) and micro sized (rpm up to 8000) helicopter and setup the number of blades between 2 and 5.
Before starting the measuring you have to set an estimated headspeed. You can expect most accurate measurings if set inside the range of +/- 500rpm to your real headspeed.
Works with electric and nitro helis without changing any settings.


For best results please follow these instructions:
Make sure you have not too much side noise like strong wind.
After setting an estimated headspeed place your phone on the ground 1-2m from your helicopter.
Press the "Measure Head Speed" button and walk to a save distance.
Spool up the helicopter to your desired headspeed and wait about 20 seconds.
After the blades have come to a stop retrieve your phone and press the "Stop Measuring" button.
Now you can read the headspeeds during the measuring.

You can save the result to the log history using the menu option. If you enable the option "Save Log Automatically" logs will be saved automatically after finishing measuring.
Touch a log entry in the log history to view saved results. Long touch a log entry to send the entry or delete it.
Use log menu to send complete log history.

We want to increase accuracy and compatibility of this App. So please help us and send feeback to [email protected]
Please supply information about the phone and helicopters you measured the headspeed.

If you have any problems measuring correct headspeed please contact us at [email protected]
We will give you instruction about how to enable debug mode. This mode will write data to your SD card which can help us find a solution.

Tested by developer:
Phones: HTC Desire and Desire S
Helicopters: Align T-Rex 500, T-Rex 600, T-Rex 700E, T-Rex 700N, Blade mCPX

Tested by users:
Phones: HTC HD2, Motorola Defy and Droid X, Samsung Mesmerize
Helicopters: Mikado Logo 600, 600SE and 400SE, Align T-Rex 450, Concept Notos 500, Walkera 4G6 and M120D01, MSH Protos and Mini Protos

Required permissions:
- Record audio: Needed to record audio from your mic.
- Modify/delete USB storage contents modify/delete SD card contents: Needed for debug mode

v1.0.1: Touch at rpm bar of log to display exact value.
v1.0.1: Debug mode (please contact us at [email protected] about how to enable debug mode).
v1.0.2: Improved algorithm and increased rpm search range.
v1.0.3: Dynamic adjustment of log rpm bar size.
v1.0.4: Prevent orientation change during measuring.
v1.0.5: Preserve measured data during orientation change.
v1.0.6: Successful license check is valid for one week to use the app on the field without internet access.
v1.0.7: Support for micro sized helicopters.
v1.0.8: Minor improvement for license check.
v1.0.9: Log added.
v1.0.10: Rename of Logentries. Sending of all measured data. Scrolling of measured data by swiping left or right.
v1.1.0: Scrolling of measured data by tap on arrow.
v1.1.1: Tap on log bar displays rpm in bigger letters.
v1.1.2: Fallback for device not supporting default audio format.
v1.1.4: Experimental low RPM mode.

Recent changes:
v1.1.4: Experimental low RPM mode.
Add to list
$3.13
91
4.6
User ratings
97
Installs
1,000+
Concerns
0
File size
78 kb
Screenshots
Screenshot of Head Speed Tachometer Screenshot of Head Speed Tachometer Screenshot of Head Speed Tachometer Screenshot of Head Speed Tachometer Screenshot of Head Speed Tachometer

About Head Speed Tachometer
Head Speed Tachometer is used to measure the headspeed of your r/c-helicopter.
The sound of the blades will be analyzed and the according headspeed will be calculated.
Using Settings you can choose between standard (rpm up to 4000) and micro sized (rpm up to 8000) helicopter and setup the number of blades between 2 and 5.
Before starting the measuring you have to set an estimated headspeed. You can expect most accurate measurings if set inside the range of +/- 500rpm to your real headspeed.
Works with electric and nitro helis without changing any settings.


For best results please follow these instructions:
Make sure you have not too much side noise like strong wind.
After setting an estimated headspeed place your phone on the ground 1-2m from your helicopter.
Press the "Measure Head Speed" button and walk to a save distance.
Spool up the helicopter to your desired headspeed and wait about 20 seconds.
After the blades have come to a stop retrieve your phone and press the "Stop Measuring" button.
Now you can read the headspeeds during the measuring.

You can save the result to the log history using the menu option. If you enable the option "Save Log Automatically" logs will be saved automatically after finishing measuring.
Touch a log entry in the log history to view saved results. Long touch a log entry to send the entry or delete it.
Use log menu to send complete log history.

We want to increase accuracy and compatibility of this App. So please help us and send feeback to [email protected]
Please supply information about the phone and helicopters you measured the headspeed.

If you have any problems measuring correct headspeed please contact us at [email protected]
We will give you instruction about how to enable debug mode. This mode will write data to your SD card which can help us find a solution.

Tested by developer:
Phones: HTC Desire and Desire S
Helicopters: Align T-Rex 500, T-Rex 600, T-Rex 700E, T-Rex 700N, Blade mCPX

Tested by users:
Phones: HTC HD2, Motorola Defy and Droid X, Samsung Mesmerize
Helicopters: Mikado Logo 600, 600SE and 400SE, Align T-Rex 450, Concept Notos 500, Walkera 4G6 and M120D01, MSH Protos and Mini Protos

Required permissions:
- Record audio: Needed to record audio from your mic.
- Modify/delete USB storage contents modify/delete SD card contents: Needed for debug mode

v1.0.1: Touch at rpm bar of log to display exact value.
v1.0.1: Debug mode (please contact us at [email protected] about how to enable debug mode).
v1.0.2: Improved algorithm and increased rpm search range.
v1.0.3: Dynamic adjustment of log rpm bar size.
v1.0.4: Prevent orientation change during measuring.
v1.0.5: Preserve measured data during orientation change.
v1.0.6: Successful license check is valid for one week to use the app on the field without internet access.
v1.0.7: Support for micro sized helicopters.
v1.0.8: Minor improvement for license check.
v1.0.9: Log added.
v1.0.10: Rename of Logentries. Sending of all measured data. Scrolling of measured data by swiping left or right.
v1.1.0: Scrolling of measured data by tap on arrow.
v1.1.1: Tap on log bar displays rpm in bigger letters.
v1.1.2: Fallback for device not supporting default audio format.
v1.1.4: Experimental low RPM mode.

Recent changes:
v1.1.4: Experimental low RPM mode.

User reviews of Head Speed Tachometer
Write the first review for this app!
Android Market Comments
A Google User
Oct 5, 2014
Samsung s2 App works well, I have been using this app for my 450 size heli and a few other larger helis. It seems to work well.
A Google User
Sep 17, 2014
Great little app!
A Google User
Sep 12, 2014
Thank you! Very helpful verifying my governor settings.
A Google User
Aug 28, 2014
Excellent app, easy to use, highly recommend I have compared this to other tachs and telemetry sensors and it's very accurate. It's easy to use and works surprisingly well. Used on 450 electrics, 550 and 600 nitros with equal success.
A Google User
Dec 12, 2013
Works good Seems like it works alright, was able to differentiate between two different battery brands I use.