These seem to work great and dampen the head well. These are the only option for your 470L, but so far have been holding up well. I have 50 or so flights on my 470L with one crash and one blade strike and these are still holding up. I bought these because I really thought I would need to replace them after the crash, but they were still fine. I use a little Super Lube grease on all my dampers and they seem hold up well.
M
Michael R.
Gets the job done but….
These get the job done of damping the feathering shaft but do not seem to last that long. They appear to dry and harden after a while leaving the rotor head a little loose. Unfortunately this is the only option available for the 470LM head.