Recommended head speed for align 500 4 blade

[DaweMD]

What do people recommend for head speed on this 4 blade head? It's my first one so I am wondering what people are using.

[Andy01]

I don't have a 4 blade 500 (only 600 & 820mm 4 blades), and a 2x465mm UH-1N.

My 500 sized UH-1N flies well at 1700rpm, so I would suggest starting at about 1600-1650rpm, and see if you can nudge it down closer to 1550-1600rpm.

It probably depends a bit on what blades you have - standard 425mm x 4, narrow chord 430mm scale blades, or 4x 435mm wide chord Spin, as well as whether they are symmetrical or asymmetrical. These things will influence the lift.

Also consider what tail blades. I use 2x 95mm on my UH-1N, so you may need either a 2x105mm on a slow 4 blade, or a 4 blade tail ?

Colin

[allegro16]

I'm flying my Jayhawk 500 4 blades at 1,500 RPM. Using 4 x Rotortech 480mm symmetrical blades.