Evo 50 Blade Flutter question

[tplummer]

I've seen folks mention adding a shim to the head to address this issue.

1. How is this installed? (Where and what)
2. What thickness should I look for?
3. Any concerns with this approach?

Blades go out of track around 1780 - 1800 or so. The feathering spindle is fine, new grips and dampners installed, nothing weird with the thrust bearings that I could see. Using the MAH blades (too finicky??). Also using the Hi-Tec HS-635HB on the collective. Maybe time to swap this out for something stronger? I really wanna track down this problem. Any help is appreciated..

Travis

[kevin23]

Mine did this until I changed the blades,problem was gone afterwards.
originally thought the blades was bad,had them replaced,was still there until I switched

[TCU 02xp]

I had the same problem with mine, switched the blades and that fixed it for about 1 week. I got so tired of having this problem with the EVO, i sold it and got a Trexx600. Hope you find the problem.

[tommytt1]

My Sceadu developed some flutter in idle up around mid stick. It turned out to be a few ball links with some slop. Tom

[Milde Shag]

I had a mate who had a blade flutter on his Evo 50.
It never had this problem before.
Turns out that one of the shim washers in the head was not installed at factory.
2506-012 FW6X8X0.5T
Refer to the manual it is the same head for HPM/SWM.
It is placed between the thrust and final bearing.

[Jeffs450SE]

yep the shims are there for a reason!!!