Weekly RC News!Trex 100 flown!
Jan 2011 We can confirm now that Simstick is compatible with AEROFLY5.Please visit AeroFly5 website for details about this simulatorPriceless Tool of the Month
Matt Botos continues his Priceless Tool of the Month series for January . . . the Dial Indicator. Not only sharing information about the Dial Indicator but also why he uses a Dial Indicator. Thank you very much Matt for sharing your knowledge and experience with us. Click on to read what he has to share with us.
Priceless Tools – Jan 2011
January 6th, 2011 Posted in Priceless Tools
I’m going to start off the New Year with one of the most valuable tools in my garage…… the Dial Indicator. Dial indicators, also known as dial gauges and probe indicators, are instruments used to accurately measure small linear distances, and are frequently used in industrial and mechanical processes. They are named so because the measurement results are displayed in a magnified way by means of a dial. Dial indicators typically measure ranges from 0.25 mm to 300 mm (0.015 in to 12.0 in), with graduations of 0.001 mm to 0.01 mm (metric) or 0.00005 in to 0.001 in (imperial). You do not need the most expensive dial indicator, Harbor Freight has one that will do the job for $11.99.
Applications for R/C Helicopters
● Checking run-out on any spinning shaft within the helicopter.
● Checking run-out on engine crank shaft after a bad crash.
● Checking run-out on fan hub when mounting to engine crank shaft (with todays pinch style hub this is usually not an issue but quality control and tolerances machine shops hold can vary greatly. As a general rule, check everything even if its brand new.
In order to use the dial indicator you will also need a magnetic mount base and a bench vice with a decent platform for the magnetic base to sit. This will allow you to mount your nitro engine in the vice (always clamp on the mount tabs, never squeeze the outside of the case!). Both of these tools are fairly cheap from Harbor Freight as well.
If you would like to check the run-out on say a main shaft or head axle, you will need a set of V-Blocks. V-Blocks will allow you to slowly spin the shaft in a secure v-shape while checking the run-out on a shaft. Never assume any of your shafts are straight after a crash just by using the eyeball method, you will have a much smoother running helicopter if all of your shafts are straight.
Q: Why do you need these tools?
A: A vibration free helicopter is happy for many reasons. First and foremost, we have more sensors on our helicopters than ever before. With the increasing popularity of flybarless electronics there should also be an increase in awareness of where vibrations are coming from and how to cure them. A multitude of vibrations with sensors attached to the helicopter means the sensors will have troubles responding to change in axis inputs that they are designed to focus on. Imagine trying to perform an everyday task during an earthquake, your capacity for completing this task would decrease dramatically. This is why we see a drift in the tail or even on aileron and elevator when there are excessive vibrations. Secondly, power transfer is much more efficient when vibrations are minimized.
Good luck and fly vibration free!
Matt90size conversion kits at fast lad
In stock now the new Rave 90 ENV conversion kits.. Quick and easy conversion to make your nitro Rave ENV 90 into electric.http://www.fast-lad.co.uk/store/advanced_search_result.php?keywords=as112+conversion&x=0&y=0