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May 13, 2010
, 10:03 PM
Joined Feb 2008
How to hinge the century diamond rigid head.
Here it is, how to make the rigid century head into a hinged grip design.
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start by removing the blade.
Take the bolt that secures the grip in the feathering spindle and remove the blade grip. Make sure you don't lose the thrust bearings.
Now, get some fuel tubing and cut it with an Xacto knife about 4 mm of it. You'll need 5, in case of 5 blades that is. This one I cut is just for display purposes as my rotor head was already hinged.
Put some oil to lube the piece of fuel tubing and slide it into the exposed feathering spindle.
Slide it until the end of the spindle.
The get a 6mm washer, I used some that I had from the HK500 original plastic head.
Now slide the 6mm washer into the feathering spindle until it touches the silicon tubing you've just slide in the previous step.
If the blade grip came out correctly you should have the grip, 2 radial bearings inside the grip, 1 washer to separate the thrust bearing, the three pieces of the thrust bearing and the washer and bolt to secure the grip in the spindle.
This bearing has to go.
So remove it and put it in a box with all the other 5 bearings.
Now reassemble the thrust bearing and mount it into the feathering bolt.
Use RED thread locker on the feathering bolt.
Put a bit on the beginning of the thread, you might want to take these bolts out someday!
put the feathering bolt inside the grip and hold it with the Allen driver...
...while you slide it over the feathering spindle. Then tighten the feathering bolt back in...
... enjoy your new hinged blade grip. You'll probably have to re-track the head once you are done with all the other four. Difference for me was night and day.