Scary

[500E]

3\5 resonance dampers, these came in on a 500 new to us

[Trans Lift]

Not good!

[Counterrotate]

Somebody been pencil-whipping their inspections?

[superstallion6113]

Looks like it'll buff out.

[mausermolt]

i hope thats under warranty

[500E]

mm

You must be new to helicopters, warranty !! is there such a thing in rotary world

SS

Tried buffing made it worse

CR

They need whiping dont know about pencil

TL

Now that must be the understatment of the year

 

Not to mention pilots walk round,maintance people, anual less than 50 hours ago :ph34r:

[Guest pokey]

looks like it still had an hour or 2 to go. Did it still fly OK tho?, no vibration?

[mausermolt]

im not to familiar with the 500, could you post a pic of the complete assy. and where the damaged part is?

 

so....what would happen when that thing wore all the way through in flight?\

 

also yes im still a noob compared to a lot of guys on here.

but i do know that getting a company to honor a warranty is about like trying to bleed a turnip.

Edited April 24, 2013 by mausermolt

[500E]

It is the hangy down bits on the blade

Never flew the machine they are off, pilot said it was smothe ??.

If one came off & you made it down most loose parts, inspection panels doors may have jumpt ship in an efort to save themselves we think

Dont know if it has hapened

[iChris]

 

 

im not to familiar with the 500, could you post a pic of the complete assy. and where the damaged part is?

 

so....what would happen when that thing wore all the way through in flight?

 

By the position of the pinhole in the shaft, it appears the 3 per-rev pendulum wore that notch in the shaft. However, it does show a bearing (#32) near that position.

 

Pilots on pre-flight normally grasp the pendulum and checks for play. Since the blade rotates mostly in one direction the deep wear is normally under only one of the pendulum arms. You should note the play far before the other side wears all the way through and the pendulum departs the blade.

 

The 3P and 5P Vibration Absorber started with the OH-6A and carried on to the 500C. When the five-blade 500D came out, it was found that the extra blade reduced the vibration level to a point that no absorbers were needed.

 

Vibration Absorber Inspection:

 

Inspect bracket for presence of ballast weights. Evidence of lost ballast will require weighing of complete vibration absorber (Ref. Vibration Absorber Weighing).

 

Inspect vibration absorber pad on underside of blade for security.

 

Inspect vibration absorber for security of installation on blade.

 

Ensure both pendulums swing freely and no more than 0.015 inch (0.381 mm) radial play exists between the pendulums and the hinge pins.

 

Maximum allowable axial play between pendulums and bracket is 0.085 inch (2.159 mm).

 

Inspect all parts of the vibration absorber for cracks and breaks.

 

Inspect pad on bracket below pivot end of largest pendulum for security.

 

Inspect thrust washers bonded to the bracket, to the 5−per−revolution pendulum, and to the 3−per−revolution pendulum for evidence of damaged Teflon surfaces, wear and failure of bond.

 

Repair of the vibration absorber is limited to disassembly and replacement of pivot shaft bearings, thrust washers and rubber pads on the bracket. The pendulum weights may be inter−changed subject to total weight restrictions (Ref. Vibration Absorber Weighing). The weight shims must not be altered because the weights and the assembly have been tuned. The absorber bracket may be either an aluminum or magnesium casting. Refer to Section 2 for corrosion control and identification of magnesium and aluminum alloys.

 

Edited April 26, 2013 by iChris

[Flying Pig]

It is the hangy down bits on the blade

Never flew the machine they are off, pilot said it was smothe ??.

If one came off & you made it down most loose parts, inspection panels doors may have jumpt ship in an efort to save themselves we think

Dont know if it has hapened

Thats a C model. The rotor system is different on the 5 bladed D E and F

Edited April 26, 2013 by Flying Pig

[mausermolt]

gotcha. thanks for the response. i bet the pilot about barfed when he saw the pin.

[500E]

Thought you would like thoes picks iC there were no bearings left in 2 VA & 1/2 inc slot in their place of all wear was on the 3per.

Bushes 7 shafts were worn on all 4 units

FP

Yes it is a C they came off after the 4 blades OH6 & C 5blade heads did not require the harmonic dampers.

Just dont understand how anyone missed them one of the 5 per was allmost seized on shaft all strange