Today's Message Index:
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1. 01:07 PM - Aileron Trim - Vibration in Struts - Fuel Odour (George Nielsen)
2. 04:06 PM - Re: Aileron Trim - Vibration in Struts - Fuel Odour (Doug Gray)
3. 04:58 PM - Re: Aileron Trim - Vibration in Struts - Fuel Odour (Charlie England)
Message 1
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| Subject: | Aileron Trim - Vibration in Struts - Fuel Odour |
Here are three (apparently) unrelated issues with my RV-6:
_Aileron trim:_
When I move the ailerons then the trim lever between the seats follows
them. I have not noticed that before. From what I remember the trim
lever remained in position and could be moved only by hand to adjust the
ailerons. Is it normal for the trim lever to move with the ailerons? If
not, is the aircraft airworthy if it does and what can be done to
prevent this from happening?
_Squeak and vibrations from wheel struts:_
When I push my aircraft on the ground everything goes well. But when I
stop I hear some squeaky sounds. Upon closer inspection vibrations
emanate from the wheel struts. This happens also when I rock the
aircraft or when I pull it backwards. I removed the wheel covers and
pumped up the tyres. This did not have much effect. I can feel the
vibration on the pants of the struts. What could the problem be and what
can be done to remedy it? Does it have anything to do with the brake lines?
_Slight odour of fuel in cockpit:_
When I open the cockpit by sliding the canopy I think that I can smell
slightly fuel. I have not noticed any leak or loss of fuel. After
leaving the cockpit open for a few minutes this disappears. I have
noticed this for the past few months. Is there anything I can do to
locate the source of the odour? I suppose that there are a few vapours.
Thanks for answering any one of the above questions (or any combination).
George Nielsen
RV-6 PH-XGN
The Hague, the Netherlands
Message 2
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| Subject: | Re: Aileron Trim - Vibration in Struts - Fuel Odour |
1. The friction on the aileron trim lever set and adjusted by a nylon split b
lock underneath the seat panel. Remove the lever handle and the seat floors t
hen nip to nylon lock nut up a little to increase the friction. Airworthy w
ith or without aileron trim.
2. First check the tension/torque on all 6 engine mount to firewall bolts. I
f these are loose the mount can move relative to the firewall giving the cre
aking sound. Second, check for cracks in the engine mount at the various wel
ded areas, these don't creek but it would be wise to check them.
3. If you are using 100LL fuel and is dyed blue like this country (Australia
) look for a residual blue stain around the fittings inside the cockpit. It w
ill transfer to your fingers easily so you can simply feel around the plumbi
ng. The blue dye is left behind after the fuel evaporates.
Doug
Sent from my iPad
> On 27 Jul 2014, at 6:06 am, George Nielsen <genie@swissmail.org> wrote:
>
> Here are three (apparently) unrelated issues with my RV-6:
>
> Aileron trim:
>
> When I move the ailerons then the trim lever between the seats follows the
m. I have not noticed that before. =46rom what I remember the trim lever rem
ained in position and could be moved only by hand to adjust the ailerons. Is
it normal for the trim lever to move with the ailerons? If not, is the airc
raft airworthy if it does and what can be done to prevent this from happenin
g?
>
> Squeak and vibrations from wheel struts:
>
> When I push my aircraft on the ground everything goes well. But when I sto
p I hear some squeaky sounds. Upon closer inspection vibrations emanate from
the wheel struts. This happens also when I rock the aircraft or when I pull
it backwards. I removed the wheel covers and pumped up the tyres. This did n
ot have much effect. I can feel the vibration on the pants of the struts. Wh
at could the problem be and what can be done to remedy it? Does it have anyt
hing to do with the brake lines?
>
> Slight odour of fuel in cockpit:
>
> When I open the cockpit by sliding the canopy I think that I can smell sli
ghtly fuel. I have not noticed any leak or loss of fuel. After leaving the c
ockpit open for a few minutes this disappears. I have noticed this for the p
ast few months. Is there anything I can do to locate the source of the odour
? I suppose that there are a few vapours.
>
> Thanks for answering any one of the above questions (or any combination).
>
> George Nielsen
> RV-6 PH-XGN
> The Hague, the Netherlands
>
>
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Message 3
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| Subject: | Re: Aileron Trim - Vibration in Struts - Fuel Odour |
Also worth checking:
2. If the mount is tight and there are no cracks, jack it up so that
there's no load on the gear leg, & make sure it's not moving in its
socket in the motor mount. Not likely, but worth checking. Also, the
brakes can sometimes squeak, or drag a bit causing the brake line or leg
fairing to vibrate as the plane is moved; might not be noticed until the
plane comes to a stop and/or is rocked forward/aft to just rotate the
wheels slightly.
3. If there's *any* leak at all at the tanks or anywhere else back of
the firewall, the odor will find its way into the cabin. It might not
even be bad enough (or be in a location you can't easily inspect) to see
evidence of a leak. Because the canopy traps air in the cabin, natural
air movements have a hard time dispersing the odors.
Charlie
On 7/26/2014 6:06 PM, Doug Gray wrote:
> 1. The friction on the aileron trim lever set and adjusted by a nylon
> split block underneath the seat panel. Remove the lever handle and the
> seat floors then nip to nylon lock nut up a little to increase the
> friction. Airworthy with or without aileron trim.
> 2. First check the tension/torque on all 6 engine mount to firewall
> bolts. If these are loose the mount can move relative to the firewall
> giving the creaking sound. Second, check for cracks in the engine
> mount at the various welded areas, these don't creek but it would be
> wise to check them.
> 3. If you are using 100LL fuel and is dyed blue like this country
> (Australia) look for a residual blue stain around the fittings inside
> the cockpit. It will transfer to your fingers easily so you can simply
> feel around the plumbing. The blue dye is left behind after the fuel
> evaporates.
> Doug
>
> Sent from my iPad
>
> On 27 Jul 2014, at 6:06 am, George Nielsen <genie@swissmail.org
> <mailto:genie@swissmail.org>> wrote:
>
>> Here are three (apparently) unrelated issues with my RV-6:
>>
>> _Aileron trim:_
>>
>> When I move the ailerons then the trim lever between the seats
>> follows them. I have not noticed that before. From what I remember
>> the trim lever remained in position and could be moved only by hand
>> to adjust the ailerons. Is it normal for the trim lever to move with
>> the ailerons? If not, is the aircraft airworthy if it does and what
>> can be done to prevent this from happening?
>>
>> _Squeak and vibrations from wheel struts:_
>>
>> When I push my aircraft on the ground everything goes well. But when
>> I stop I hear some squeaky sounds. Upon closer inspection vibrations
>> emanate from the wheel struts. This happens also when I rock the
>> aircraft or when I pull it backwards. I removed the wheel covers and
>> pumped up the tyres. This did not have much effect. I can feel the
>> vibration on the pants of the struts. What could the problem be and
>> what can be done to remedy it? Does it have anything to do with the
>> brake lines?
>>
>> _Slight odour of fuel in cockpit:_
>>
>> When I open the cockpit by sliding the canopy I think that I can
>> smell slightly fuel. I have not noticed any leak or loss of fuel.
>> After leaving the cockpit open for a few minutes this disappears. I
>> have noticed this for the past few months. Is there anything I can do
>> to locate the source of the odour? I suppose that there are a few
>> vapours.
>>
>> Thanks for answering any one of the above questions (or any combination).
>>
>> George Nielsen
>> RV-6 PH-XGN
>> The Hague, the Netherlands
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