Salt Lake City, Utah
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I have a R60 but now it is a 90. I put the new updated R90 rotor head on and I have play between the blade grips. While measuring it against the original 60 head, I measured 1mm difference between them. This is where the spindle shaft dampeners (dampers) go. The 90 head is recessed 1 mm each side deeper. So my question is what is different?
While looking up parts, the grips, spindle shaft and dampeners are all the same. So what is different in the 90? Is there more than one washer between the dampener and inner blade grip? I can't figure this out. I just put the 60 one back on till I find out. It works fine, I just thought the steel sleeve would be better in the 90.
Thanks for any help.