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Search: Posts Made By: nodrama
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Forum: Rotorheads
19th Dec 2018, 07:55
Replies: 1,205
Views: 573,807
Posted By nodrama

OPC ? 🙂 EP instructs main SOV closure for...

OPC ? 🙂

EP instructs main SOV closure for high fluid temperature and low fluid quantity (providing other system is serviceable)
Forum: Rotorheads
18th Dec 2018, 21:27
Replies: 1,205
Views: 573,807
Posted By nodrama

Part of the above is incorrect (I was watching...

Part of the above is incorrect (I was watching the football, pathetic penalty shoot-out). The nut on the servo end of the pitch control rod doesn’t get touched during an actuator replacement. It is...
Forum: Rotorheads
18th Dec 2018, 21:12
Replies: 1,205
Views: 573,807
Posted By nodrama

Yes. I can’t help you with a detailed diagram...

Yes.
I can’t help you with a detailed diagram of the servo actuator system. I’m not involved with component strip and overhaul.
Forum: Rotorheads
18th Dec 2018, 19:59
Replies: 1,205
Views: 573,807
Posted By nodrama

55% reservoir quantity

55% reservoir quantity
Forum: Rotorheads
18th Dec 2018, 19:43
Replies: 1,205
Views: 573,807
Posted By nodrama

The spider slider isn’t splined on this aircraft...

The spider slider isn’t splined on this aircraft type. The scissor links transfer the rotation of the tail rotor hub to the spider.
Yes, there is a ‘nut’ holding the tail rotor hub on (there is...
Forum: Rotorheads
18th Dec 2018, 19:21
Replies: 1,205
Views: 573,807
Posted By nodrama

No. Six nuts hold the actuator (servo, hyd unit)...

No. Six nuts hold the actuator (servo, hyd unit) onto the gearbox. There’s the two nuts either end of the pitch control rod (shaft) and one bolt/ nut attaching the flying controls to the input/...
Forum: Rotorheads
17th Dec 2018, 09:58
Replies: 1,205
Views: 573,807
Posted By nodrama

Not a suggestion, fact. The picture is from...

Not a suggestion, fact.

The picture is from the Training School notes, not from an approved Technical Publication.
Forum: Rotorheads
14th Dec 2018, 13:50
Replies: 1,205
Views: 573,807
Posted By nodrama

Thanks OAP. That makes sense to me.

Thanks OAP. That makes sense to me.
Forum: Rotorheads
14th Dec 2018, 12:13
Replies: 1,205
Views: 573,807
Posted By nodrama

I'm not really one for speculating, so the...

I'm not really one for speculating, so the picture below is inferring nothing (except that I drew on it with my foot!). The diagram of the spider assembly to the pitch change rod (shaft) in the...
Forum: Rotorheads
14th Dec 2018, 12:00
Replies: 1,205
Views: 573,807
Posted By nodrama

Yes. I replied by email yesterday?

Yes. I replied by email yesterday?
Forum: Rotorheads
13th Dec 2018, 14:51
Replies: 1,205
Views: 573,807
Posted By nodrama

Hoistop - As I've said before, I've never seen...

Hoistop - As I've said before, I've never seen the inside workings of one of these servo actuators.
The diagram is a schematic of what I think the TR actuator looks like judging by the shape of the...
Forum: Rotorheads
13th Dec 2018, 11:36
Replies: 1,205
Views: 573,807
Posted By nodrama

OAP - you may be correct? It is still possible to...

OAP - you may be correct? It is still possible to relate this sentence ......

"The inner or outer ring faces have been ground to a precise dimension known as the preload offset. This offset...
Forum: Rotorheads
13th Dec 2018, 10:21
Replies: 1,205
Views: 573,807
Posted By nodrama

Pozidrive - I can't explain it any better than...

Pozidrive - I can't explain it any better than Crabs last diagram.... the one with the pressure switch in red. Also, replace 'swashplate' for 'spider' in that diagram.
Forum: Rotorheads
13th Dec 2018, 08:31
Replies: 1,205
Views: 573,807
Posted By nodrama

For those who might be interested, I've compiled...

For those who might be interested, I've compiled a 'tutorial' from another source that hopefully explains duplex bearing pre-load. The duplex bearing that is the subject of this thread is a...
Forum: Rotorheads
13th Dec 2018, 06:06
Replies: 1,205
Views: 573,807
Posted By nodrama

Pozidrive - "The control shaft passes through an...

Pozidrive - "The control shaft passes through an outer shaft, which forms part of the tail rotor hydraulic actuator piston" is referring to the part of the servo (actuator) that is boxed in Fig 3,...
Forum: Rotorheads
12th Dec 2018, 20:33
Replies: 1,205
Views: 573,807
Posted By nodrama

Duplex bearings are ball, not roller. To cope...

Duplex bearings are ball, not roller. To cope with radial and axle loads they work like this...
Forum: Rotorheads
12th Dec 2018, 14:09
Replies: 1,205
Views: 573,807
Posted By nodrama

I think so. Never seen the inside of a servo...

I think so. Never seen the inside of a servo that’s been stripped down. I do know that the pitch control rod is one part though, from input end to output end (where the nuts attach).
Forum: Rotorheads
12th Dec 2018, 12:45
Replies: 1,205
Views: 573,807
Posted By nodrama

I thought my crayons might ruin the clarity.....

I thought my crayons might ruin the clarity.....
Forum: Rotorheads
12th Dec 2018, 12:06
Replies: 1,205
Views: 573,807
Posted By nodrama

https://cimg3.ibsrv.net/gimg/pprune.org-vbulletin/...

https://cimg3.ibsrv.net/gimg/pprune.org-vbulletin/2000x1504/img_1463_1a0bcff1a323facbe0fcc87da45810ce465699c6.jpg
Forum: Rotorheads
11th Dec 2018, 17:32
Replies: 1,205
Views: 573,807
Posted By nodrama

Interestingly, all the 'bearings' in the AW169...

Interestingly, all the 'bearings' in the AW169 tail rotor (flap/ pitch/ lead-lag) are elastomeric. I'm wondering whether, with no hydraulic pressure to the TR control servo, the TR blades would...
Forum: Rotorheads
11th Dec 2018, 06:31
Replies: 1,205
Views: 573,807
Posted By nodrama

It isn't possible to even move the flying...

It isn't possible to even move the flying controls on an AW169 without at least one hydraulic system pressurised. That's why I made the point of saying earlier that the MR/ TR pitch control is...
Forum: Rotorheads
10th Dec 2018, 06:32
Replies: 1,205
Views: 573,807
Posted By nodrama

1. See previous posts 2. With one engine...

1. See previous posts
2. With one engine running in 'Acc Drive'
3. Yes
Forum: Rotorheads
10th Dec 2018, 04:47
Replies: 1,205
Views: 573,807
Posted By nodrama

https://cimg5.ibsrv.net/gimg/pprune.org-vbulletin/...

https://cimg5.ibsrv.net/gimg/pprune.org-vbulletin/975x682/flexiball_6e59cbde3f5f810e11957daba1280f143d872388.png

A ‘flexiball cable’ is what it is called. They’ve been used successfully by several...
Forum: Rotorheads
9th Dec 2018, 14:13
Replies: 1,205
Views: 573,807
Posted By nodrama

Forget the fact that I have type knowledge, from...

Forget the fact that I have type knowledge, from a maintenance engineer's point of view I found the report poorly written, with poor terminology, and confusing. This has been proven by the majority...
Forum: Rotorheads
8th Dec 2018, 17:26
Replies: 35
Views: 9,771
Posted By nodrama

Any components or structure that are lifed on...

Any components or structure that are lifed on landing cycles may incur a penalty factor on that life for every overweight cycle e.g PF of 2 would mean a cycle would be recorded as two cycles. It...
Showing results 1 to 25 of 318
 


 
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