Today's Message Index:
----------------------
1. 12:49 AM - Re: Vibrating control (Richard Goode)
2. 08:17 AM - Fuel shut off valve (CD610201@aol.com)
3. 08:29 AM - Re: Vibrating control (Walter Lannon)
4. 10:38 AM - Yak 54 SBs (Rotatohead)
5. 12:58 PM - Re: Vibrating control (Jacquescj6)
6. 07:17 PM - Re: Re: Vibrating control (Walter Lannon)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Vibrating control |
The obvious question is whether you have dynamically balanced the propeller
after changing it. We regard this as absolutely vital to smooth operation.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Jacquescj6
Sent: 06 May 2014 22:32
Subject: Yak-List: Vibrating control
Hi All
I have just replaced an engine and prop in my cj6 and now have a bit of a
vibration.
On low Rpm it feels normal but at about 1200rpm there is a bit of vibration
on the aircraft taxing at higher rpm about 1400 rpm it seem to go away.
while flying there is a definite vibration on the stick.
At low rpm 1700 to 1900 the vibration its not to bad and I would describe it
as a slow vibration but as you increase the rpm the vibration speeds up
quite a bit shaking the stick . It does not feel as if the air frame is
shaking abnormally but only on the stick.
Does anybody have a suggestion as to what it could be or is it just an
unbalance prop.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=422929#422929
--
This message has been scanned for viruses and dangerous content by
MailScanner, and is believed to be clean.
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Fuel shut off valve |
Fuel shut off valve does not completely stop the flow of fuel on my Yak55M.
When I took it apart there was a loose spring (not attached to anything)
in the housing. Looks like it is there to spring load the flapper valve but
not sure how it says in place. The flapper seal looks like it needs to be
replaced. Anyone have any experience servicing this valve.
Charles
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Vibrating control |
A few questions on your prop installation;
Was this a new prop. in 2 steel boxes from China. If so it would be
perfectly balanced assuming you have set the blade angles correctly - with a
propellor protractor, and properly positioned and torqued the clamps.
While I agree with Richard about dynamic balancing that is a final step to
match a properly balanced propellor with the rotating mass of the engine.
Correct installation comes first.
Please advise the details of the prop and engine you installed.
Walt
-----Original Message-----
From: Jacquescj6
Sent: Tuesday, May 06, 2014 2:31 PM
Subject: Yak-List: Vibrating control
Hi All
I have just replaced an engine and prop in my cj6 and now have a bit of a
vibration.
On low Rpm it feels normal but at about 1200rpm there is a bit of vibration
on the aircraft taxing at higher rpm about 1400 rpm it seem to go away.
while flying there is a definite vibration on the stick.
At low rpm 1700 to 1900 the vibration its not to bad and I would describe it
as a slow vibration but as you increase the rpm the vibration speeds up
quite a bit shaking the stick . It does not feel as if the air frame is
shaking abnormally but only on the stick.
Does anybody have a suggestion as to what it could be or is it just an
unbalance prop.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=422929#422929
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Hello all!
Looking for a complete list of issued SBs for the 54.
Any help appreciated!
Regards,
Bernhard
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=422969#422969
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Vibrating control |
Hi
Thanks for the reply's.
It was used blades I got from the guy I bought the plane from After installing
the blades we did discovered that the no 1 blade was a bit longer than the no
2 blade?
I have taken them off and send them to our local propeller shop to do a static
balance and then we will do a dynamic balance and see if it is better.
Will let you guys know.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=422975#422975
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Vibrating control |
You will need to send them the hub also. They will have to match the two
blades in length, width and thickness before installing in the hub for both
horizontal and vertical static balance.
Unbalance correction is made with steel plates attached to the hub assy.
After that it should be good assuming the blade angles are set within
tolerance which is 0.1 deg (6 min.). I try to set them within 0.05 deg. (3
min.)
Dynamic balance may not work very well on this prop. as there is no spinner
structure. For dynamic balance the corrective weight could be required
anywhere within 360 degs. With no spinner plate to accommodate that you are
restricted to a limited area at each blade only.
Walt
-----Original Message-----
From: Jacquescj6
Sent: Wednesday, May 07, 2014 12:56 PM
Subject: Yak-List: Re: Vibrating control
Hi
Thanks for the reply's.
It was used blades I got from the guy I bought the plane from After
installing the blades we did discovered that the no 1 blade was a bit longer
than the no 2 blade?
I have taken them off and send them to our local propeller shop to do a
static balance and then we will do a dynamic balance and see if it is
better.
Will let you guys know.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=422975#422975
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|