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HelicopterCentury Radikal G20-30 N640 Hawk Predator › Not too impressed with century 30/50 metal head...
05-13-2008 05:21 AM  9 years agoPost 1
DMehalko(DM)

rrVeteran

Colorado

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Few things im trying to work out on this head.

First off i was not impressed with the tolerance levels on whatever cuts their screw lengths. half of the bolts that hold the arm to the grips were too long, so when the arm was nice and tightened down as it should be it wouldnt slide onto the spindle, same for the button head, the screw is just too long.

With those being easily fixed, i for the life of me cannot get smooth operation out of the grips on the spindle, i now have it with no shims and when i tighten the feathering shaft nuts down the grips are very stiff and take force to move. Whats up with this? Im using the red dampeners and yes they're pushed all the way in.

Century Radikal E640FBL

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05-13-2008 06:02 AM  9 years agoPost 2
racingstripe

rrVeteran

Sacramento, CA

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i for the life of me cannot get smooth operation out of the grips on the spindle, i now have it with no shims and when i tighten the feathering shaft nuts down the grips are very stiff and take force to move.
I too have observed the same issue. I very carefully halved the thickness of the aluminum spacers that go between the grip and damper. That seemed to smooth things out quite a bit.

I used a regular drill, the un-bent section of a used 6mm spindle and a Dremel to shave those spacers down.

andy-

Proofread carefully to see if you any words out.

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05-13-2008 06:16 AM  9 years agoPost 3
Gearhead

rrMaster

Vt

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yes the Red Dampeners are so stiff they bulge-out when put in the Rotor Block, some of us just cut them down with a razor or hobby knife, it actually works great cause you get a custom fit,, no biggy..

Jim
Buzz Buzz Buzz

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05-13-2008 06:50 AM  9 years agoPost 4
DMehalko(DM)

rrVeteran

Colorado

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thats kinda a pain, but i guess i got to do what it takes, had to dremel down the length of the grip/arm bolts and now have to shave down the dampeners, should be right from the factory, but oh well.

Century Radikal E640FBL

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05-13-2008 11:58 AM  9 years agoPost 5
Blade_Master1

rrElite Veteran

Canada

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I can honestly say that I haven't had this issue on my Hawk or Raven while using the red dampeners.

Use some automatic tranny fluid when installing dampeners to lubricate them don't use petroleum products on the rubbers as this may weaken them.

You can use a regular bolt with washers and a nut to seat them,
then install your grips. or if your have trouble seating them with the spindle use 2 deep sockets and a vice to seat them, it's not an easy task but once you got them in properly your done.

I don't recommend shaving or cutting anything as they will work smoothly when properly installed. If they don't make sure your bearings and washers are properly installed and that they are fully seated.

I agree that the bolt lengths do need to be shortened a little but that's not a big issue with a dremel or small file.

.

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05-13-2008 04:29 PM  9 years agoPost 6
jackheli

rrProfessor

Vancouver - Canada

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During operation the head will be spinning and the blades will pull the grips out, freeing the head.

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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