Vbar v5.2 gov setup

I’ve detailed 9 things to be aware of while programming your v5.2 gov (on the workbench, with no blades installed).  I hope this information will spare you allot of wasted time and give you success in setting up the gov the first time taking out the guess work. 1) The Bailout Arm light will not [...]

New E-Calculator Formula

How to decide on headspeed: KV of the motor, and pinion tooth count. I have additional information for calculating headspeed RPM, but it goes deeper than before and considers motor RPM first.  There are few who delicately calculate the both motor RPM and headspeed RPM for optimal flight time and power combination.  Those two factors [...]

Tail shaft bearing worn out

During inspection I discovered the inner race of one of my tail shaft bearings was badly worn out.  Here in the video you can see wobble.  The bearing is secured, and the shaft is not wobbling within the bearing – it is the inner race wobbling  between the outer race.  Thanks to a friend I have a [...]

Tail setup essentials

Summary:  Do you have a tail kick that just won’t go away?  Does your tail blow out on hard maneuvers?  I believe you can fix both and have a solid “sim-like” heli performance, either flybar’d or flybarless.  Your confidence will definitely improve when that damn tail stays put!  You may already know some of this [...]

Vbar changes and calculations

I did a little more homework and remembered I can plug in two numbers in a calculator within the Vbar software that will assist with determining the blade pitch on a rotor.  Here’s what it looks like: http://www.vstabi.info/en/collective That picture is showing using it for the main rotor, but I thought a rotor is a [...]

Video of 1900RPM

I finally captured some heavy flying with the 1900RPM headspeed.  I used a helmet cam on my head.  I edited the video to cut out some boring stuff and to highlight  the more maneuvers that stressed the machine and proved the strength while at 1900RPM. Video here: http://www.youtube.com/watch?v=9UYo5cbtQkk I played with 1800RPM headspeed but while it [...]

Gear Ratios and stages

This is a nice learning tool about gear ratios and single/multi stages.  Some helicopters have 2 stage gearing and it is important to know the actual ratio so your governor will work correctly.  Two or more stages are like stacking sets of gears, but single stage gears consist of two or more in line.  The [...]

Tail adjustment

I am editing this post because there is incorrect.  Tail optimization only has to do with pirouette stops. Today I made a tail adjustment.  Before I say what I did, here is what I saw in the Vbar optimization log.  The optimization left & right values were about 67 & 132 respectively.  I also set [...]

Headroom calculator on electric helicopters

This is the the formula that has worked well for me.  I recommend any electric pilot to follow this process for optimal performance and flight time too.  :-) MainGear / Pinion = GearRatio 3.7 x (cell count) = NominalVoltage NominalVoltage * KV = MotorRPM MotorRPM / GearRatio = MaxHeadSpeed _________________________________________ MaxHeadSpeed - HeadSpeed = HeadRoom (HeadRoom [...]

Headspeed efficiency – Great information!!

From Henseleight Helicopters, http://www.henseleit-helicopters.de  They certainly know their stuff and have researched extensively.  This confirms my results running 1900 RPM. In connection with the development of the Rigid numerous test flights with a logger data capture were carried through, which persuaded me to refrain from the exaggerated present max rotor speed hype. Thanks to light [...]