Today's Message Index:
----------------------
1. 02:45 AM - Rudder friction ( again ) (John Marzulli)
2. 05:24 AM - Re: Rudder friction ( again ) (fritz)
3. 06:37 AM - Re: Rudder friction ( again ) (NYTerminat@aol.com)
4. 07:26 AM - Re: Rudder friction ( again ) (John Marzulli)
5. 07:30 AM - Re: Rudder friction ( again ) (John Marzulli)
6. 08:05 AM - Re: Rudder friction ( again ) (fritz)
7. 10:10 AM - Re: Rudder friction ( again ) (John Marzulli)
8. 04:32 PM - Re: Rudder friction ( again ) (Gary Gower)
Message 1
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| Subject: | Rudder friction ( again ) |
I spent an entire day trying to reduce the friction in my rudder system AND
eliminate the nose gear shake I have on landings.
The good news is that I think I have addressed the shake. My old lower nose
gear bearing had a 2mm front-to-back gap in it. I fabricated a new piece
that is a good fit, We will see how that goes.
The bad news is I still have too much friction in the rudder system. The
new lower bearing now needs to wear in and is producing new friction. On top
of that the amount of friction from the strut stop resting on the shelf is
substantial, but less than the strut rubbing on the channel. I have
attempted to address that friction by adding a piece of phenolic underneath
the strut cap. I also tried a piece of 1/8 nylon, but that had more friction
than the phenolic, but less than the metal\metal.
The roller bearing mod may be the best answer, but it would require removal
of the entire nose strut.
I also found some friction in the rudder pedals by themselves. I have tried
every sort of lubrication possible without result. Enlarging the holes in
the nylon block seems like a bad idea. The rudder and cables were found to
be almost frictionless.
What have other builders done to
1) Reduce the rudder pedal friction?
2) Reduce the nose strut friction?
Thanks,
John Marzulli
http://MarzulliPhoto.net/
http://701Builder.blogspot.com/
Message 2
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| Subject: | Re: Rudder friction ( again ) |
I think that one thing that is over looked is the amount of friction caused
by "excessive pressure" caused by nose gear bungee if pin isn't located
correctly.
I too, put a "Teflon washer" between my nose strut top cap and the "firewall
shelf" BUT compensated by changing the pin location in the nose strut by
the same thickness. To lessen the pressure by the bungee cord.
Fritz ---- scratch builder
----- Original Message -----
From: "John Marzulli" <john.marzulli@gmail.com>
Sent: Sunday, September 18, 2011 5:42 AM
Subject: Zenith701801-List: Rudder friction ( again )
>I spent an entire day trying to reduce the friction in my rudder system AND
> eliminate the nose gear shake I have on landings.
>
> The good news is that I think I have addressed the shake. My old lower
> nose
> gear bearing had a 2mm front-to-back gap in it. I fabricated a new piece
> that is a good fit, We will see how that goes.
>
> The bad news is I still have too much friction in the rudder system. The
> new lower bearing now needs to wear in and is producing new friction. On
> top
> of that the amount of friction from the strut stop resting on the shelf is
> substantial, but less than the strut rubbing on the channel. I have
> attempted to address that friction by adding a piece of phenolic
> underneath
> the strut cap. I also tried a piece of 1/8 nylon, but that had more
> friction
> than the phenolic, but less than the metal\metal.
>
> The roller bearing mod may be the best answer, but it would require
> removal
> of the entire nose strut.
>
> I also found some friction in the rudder pedals by themselves. I have
> tried
> every sort of lubrication possible without result. Enlarging the holes in
> the nylon block seems like a bad idea. The rudder and cables were found to
> be almost frictionless.
>
> What have other builders done to
>
> 1) Reduce the rudder pedal friction?
> 2) Reduce the nose strut friction?
>
>
> Thanks,
>
> John Marzulli
>
> http://MarzulliPhoto.net/
> http://701Builder.blogspot.com/
>
Message 3
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| Subject: | Re: Rudder friction ( again ) |
John the nose gear shake is probably a badly out of balance tire
Bob Spudis
In a message dated 9/18/2011 5:45:23 A.M. Eastern Daylight Time,
john.marzulli@gmail.com writes:
I spent an entire day trying to reduce the friction in my rudder system
AND eliminate the nose gear shake I have on landings.
John Marzulli
_http://MarzulliPhoto.net/_ (http://marzulliphoto.net/)
_http://701Builder.blogspot.com/_ (http://701builder.blogspot.com/)
(http://www.matronics.com/Navigator?Zenith701801-List)
(http://www.matronics.com/contribution)
Message 4
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| Subject: | Re: Rudder friction ( again ) |
I have video proof of the nose wheel playing forward & back at the lower
bearing.
John Marzulli
http://MarzulliPhoto.net/
http://701Builder.blogspot.com/
On Sun, Sep 18, 2011 at 6:35 AM, <NYTerminat@aol.com> wrote:
> **
> John the nose gear shake is probably a badly out of balance tire
>
> Bob Spudis
>
> In a message dated 9/18/2011 5:45:23 A.M. Eastern Daylight Time,
> john.marzulli@gmail.com writes:
>
> I spent an entire day trying to reduce the friction in my rudder system AND
> eliminate the nose gear shake I have on landings.
>
>
> John Marzulli
>
> http://MarzulliPhoto.net/ <http://marzulliphoto.net/>
> http://701Builder.blogspot.com/ <http://701builder.blogspot.com/>
>
> *
>
> ist href="http://www.matronics.com/Navigator?Zenith701801-List">http://www.matronics.com/Navigator?Zenith701801-Lists.matronics.com/">http://forums.matronics.com
> p://www.matronics.com/contribution">http://www.matronics.com/contribution
> *
>
> *
>
> *
>
>
Message 5
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| Subject: | Re: Rudder friction ( again ) |
I tried something similar without great result.
Placing washers between the strut cap and the top of the strut should
effectively change\reduce the pressure of the bungee cord while inflight.
Maybe the difference was the amount of friction caused by the cross tube
that connects the steering push rods rubbing against the v-notched channel.
John Marzulli
http://MarzulliPhoto.net/
http://701Builder.blogspot.com/
On Sun, Sep 18, 2011 at 5:22 AM, fritz <klondike@megalink.net> wrote:
>
> I think that one thing that is over looked is the amount of friction caused
> by "excessive pressure" caused by nose gear bungee if pin isn't located
> correctly.
>
> I too, put a "Teflon washer" between my nose strut top cap and the
> "firewall shelf" BUT compensated by changing the pin location in the nose
> strut by the same thickness. To lessen the pressure by the bungee cord.
>
> Fritz ---- scratch builder
>
>
> ----- Original Message ----- From: "John Marzulli" <
> john.marzulli@gmail.com>
> To: <zenith701801-list@matronics.**com <zenith701801-list@matronics.com>>
> Sent: Sunday, September 18, 2011 5:42 AM
> Subject: Zenith701801-List: Rudder friction ( again )
>
>
> I spent an entire day trying to reduce the friction in my rudder system
>> AND
>> eliminate the nose gear shake I have on landings.
>>
>> The good news is that I think I have addressed the shake. My old lower
>> nose
>> gear bearing had a 2mm front-to-back gap in it. I fabricated a new piece
>> that is a good fit, We will see how that goes.
>>
>> The bad news is I still have too much friction in the rudder system. The
>> new lower bearing now needs to wear in and is producing new friction. On
>> top
>> of that the amount of friction from the strut stop resting on the shelf is
>> substantial, but less than the strut rubbing on the channel. I have
>> attempted to address that friction by adding a piece of phenolic
>> underneath
>> the strut cap. I also tried a piece of 1/8 nylon, but that had more
>> friction
>> than the phenolic, but less than the metal\metal.
>>
>> The roller bearing mod may be the best answer, but it would require
>> removal
>> of the entire nose strut.
>>
>> I also found some friction in the rudder pedals by themselves. I have
>> tried
>> every sort of lubrication possible without result. Enlarging the holes in
>> the nylon block seems like a bad idea. The rudder and cables were found to
>> be almost frictionless.
>>
>> What have other builders done to
>>
>> 1) Reduce the rudder pedal friction?
>> 2) Reduce the nose strut friction?
>>
>>
>> Thanks,
>>
>> John Marzulli
>>
>> http://MarzulliPhoto.net/
>> http://701Builder.blogspot.**com/ <http://701Builder.blogspot.com/>
>>
>>
>
>
Message 6
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| Subject: | Re: Rudder friction ( again ) |
I don't agree-- if you add a "Teflon washer" this stretches the bungee even
more, causing more pressure. You're lifting the strut up higher.
Also, as discussed earlier---- I did away with the "damn Vee" and used a
straight Teflon block.
Fritz
----- Original Message -----
From: "John Marzulli" <john.marzulli@gmail.com>
Sent: Sunday, September 18, 2011 10:28 AM
Subject: Re: Zenith701801-List: Rudder friction ( again )
>I tried something similar without great result.
>
> Placing washers between the strut cap and the top of the strut should
> effectively change\reduce the pressure of the bungee cord while inflight.
>
> Maybe the difference was the amount of friction caused by the cross tube
> that connects the steering push rods rubbing against the v-notched
> channel.
>
> John Marzulli
>
> http://MarzulliPhoto.net/
> http://701Builder.blogspot.com/
>
>
> On Sun, Sep 18, 2011 at 5:22 AM, fritz <klondike@megalink.net> wrote:
>
>>
>> I think that one thing that is over looked is the amount of friction
>> caused
>> by "excessive pressure" caused by nose gear bungee if pin isn't located
>> correctly.
>>
>> I too, put a "Teflon washer" between my nose strut top cap and the
>> "firewall shelf" BUT compensated by changing the pin location in the
>> nose
>> strut by the same thickness. To lessen the pressure by the bungee cord.
>>
>> Fritz ---- scratch builder
>>
>>
>> ----- Original Message ----- From: "John Marzulli" <
>> john.marzulli@gmail.com>
>> To: <zenith701801-list@matronics.**com <zenith701801-list@matronics.com>>
>> Sent: Sunday, September 18, 2011 5:42 AM
>> Subject: Zenith701801-List: Rudder friction ( again )
>>
>>
>>
>> I spent an entire day trying to reduce the friction in my rudder system
>>> AND
>>> eliminate the nose gear shake I have on landings.
>>>
>>> The good news is that I think I have addressed the shake. My old lower
>>> nose
>>> gear bearing had a 2mm front-to-back gap in it. I fabricated a new piece
>>> that is a good fit, We will see how that goes.
>>>
>>> The bad news is I still have too much friction in the rudder system.
>>> The
>>> new lower bearing now needs to wear in and is producing new friction. On
>>> top
>>> of that the amount of friction from the strut stop resting on the shelf
>>> is
>>> substantial, but less than the strut rubbing on the channel. I have
>>> attempted to address that friction by adding a piece of phenolic
>>> underneath
>>> the strut cap. I also tried a piece of 1/8 nylon, but that had more
>>> friction
>>> than the phenolic, but less than the metal\metal.
>>>
>>> The roller bearing mod may be the best answer, but it would require
>>> removal
>>> of the entire nose strut.
>>>
>>> I also found some friction in the rudder pedals by themselves. I have
>>> tried
>>> every sort of lubrication possible without result. Enlarging the holes
>>> in
>>> the nylon block seems like a bad idea. The rudder and cables were found
>>> to
>>> be almost frictionless.
>>>
>>> What have other builders done to
>>>
>>> 1) Reduce the rudder pedal friction?
>>> 2) Reduce the nose strut friction?
>>>
>>>
>>> Thanks,
>>>
>>> John Marzulli
>>>
>>> http://MarzulliPhoto.net/
>>> http://701Builder.blogspot.**com/ <http://701Builder.blogspot.com/>
>>>
>>>
>>
>>
>>
>>
>>
>
Message 7
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| Subject: | Re: Rudder friction ( again ) |
I added the nylon washer between the strut cap and the strut. The strut
bottoms out at the same point, the original aluminum strut cap is just moved
up.
David pointed out Spryoflow as a bearing source, and I found these:
http://www.spyraflo.com/products/pillow_block.php
Look perfect for the outside portion of the rudder pedals.
John Marzulli
http://MarzulliPhoto.net/
http://701Builder.blogspot.com/
On Sun, Sep 18, 2011 at 8:02 AM, fritz <klondike@megalink.net> wrote:
>
> I don't agree-- if you add a "Teflon washer" this stretches the bungee
> even more, causing more pressure. You're lifting the strut up higher.
>
> Also, as discussed earlier---- I did away with the "damn Vee" and used a
> straight Teflon block.
>
> Fritz
>
> ----- Original Message ----- From: "John Marzulli" <
> john.marzulli@gmail.com>
> To: <zenith701801-list@matronics.**com <zenith701801-list@matronics.com>>
> Sent: Sunday, September 18, 2011 10:28 AM
> Subject: Re: Zenith701801-List: Rudder friction ( again )
>
>
> I tried something similar without great result.
>>
>> Placing washers between the strut cap and the top of the strut should
>> effectively change\reduce the pressure of the bungee cord while inflight.
>>
>> Maybe the difference was the amount of friction caused by the cross tube
>> that connects the steering push rods rubbing against the v-notched
>> channel.
>>
>> John Marzulli
>>
>> http://MarzulliPhoto.net/
>> http://701Builder.blogspot.**com/ <http://701Builder.blogspot.com/>
>>
>>
>> On Sun, Sep 18, 2011 at 5:22 AM, fritz <klondike@megalink.net> wrote:
>>
>>>
>>> I think that one thing that is over looked is the amount of friction
>>> caused
>>> by "excessive pressure" caused by nose gear bungee if pin isn't located
>>> correctly.
>>>
>>> I too, put a "Teflon washer" between my nose strut top cap and the
>>> "firewall shelf" BUT compensated by changing the pin location in the
>>> nose
>>> strut by the same thickness. To lessen the pressure by the bungee cord.
>>>
>>> Fritz ---- scratch builder
>>>
>>>
>>> ----- Original Message ----- From: "John Marzulli" <
>>> john.marzulli@gmail.com>
>>> To: <zenith701801-list@matronics.****com <zenith701801-list@matronics.**
>>> com <zenith701801-list@matronics.com>>>
>>>
>>> Sent: Sunday, September 18, 2011 5:42 AM
>>> Subject: Zenith701801-List: Rudder friction ( again )
>>>
>>>
>>>
>>> I spent an entire day trying to reduce the friction in my rudder system
>>>
>>>> AND
>>>> eliminate the nose gear shake I have on landings.
>>>>
>>>> The good news is that I think I have addressed the shake. My old lower
>>>> nose
>>>> gear bearing had a 2mm front-to-back gap in it. I fabricated a new piece
>>>> that is a good fit, We will see how that goes.
>>>>
>>>> The bad news is I still have too much friction in the rudder system. The
>>>> new lower bearing now needs to wear in and is producing new friction. On
>>>> top
>>>> of that the amount of friction from the strut stop resting on the shelf
>>>> is
>>>> substantial, but less than the strut rubbing on the channel. I have
>>>> attempted to address that friction by adding a piece of phenolic
>>>> underneath
>>>> the strut cap. I also tried a piece of 1/8 nylon, but that had more
>>>> friction
>>>> than the phenolic, but less than the metal\metal.
>>>>
>>>> The roller bearing mod may be the best answer, but it would require
>>>> removal
>>>> of the entire nose strut.
>>>>
>>>> I also found some friction in the rudder pedals by themselves. I have
>>>> tried
>>>> every sort of lubrication possible without result. Enlarging the holes
>>>> in
>>>> the nylon block seems like a bad idea. The rudder and cables were found
>>>> to
>>>> be almost frictionless.
>>>>
>>>> What have other builders done to
>>>>
>>>> 1) Reduce the rudder pedal friction?
>>>> 2) Reduce the nose strut friction?
>>>>
>>>>
>>>> Thanks,
>>>>
>>>> John Marzulli
>>>>
>>>> http://MarzulliPhoto.net/
>>>> http://701Builder.blogspot.****com/ <http://701Builder.blogspot.**com/<http://701Builder.blogspot.com/>
>>>> >
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>
>
>
Message 8
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| Subject: | Re: Rudder friction ( again ) |
I also flattened the V, -no problem in the first few hours you "learn" to
feel the rudder and ball centered "noise", -what a great coordination al
arm is the fuselage :-)=0AGary=0A320 hrs-=0A=0A=0A_______________________
_________=0AFrom: fritz <klondike@megalink.net>=0ATo: zenith701801-list@mat
ronics.com=0ASent: Sunday, September 18, 2011 10:02 AM=0ASubject: Re: Zenit
h701801-List: Rudder friction ( again )=0A=0A--> Zenith701801-List message
posted by: "fritz" <klondike@megalink.net>=0A=0AI don't agree--- if you a
dd a "Teflon washer" this stretches the bungee even more, causing more pres
sure.- You're lifting the strut up higher.=0A=0AAlso, as discussed earlie
r---- I did away with the "damn Vee" and used a straight Teflon block.=0A
=0AFritz=0A----- Original Message ----- From: "John Marzulli" <john.marzull
i@gmail.com>=0ATo: <zenith701801-list@matronics.com>=0ASent: Sunday, Septem
ber 18, 2011 10:28 AM=0ASubject: Re: Zenith701801-List: Rudder friction ( a
gain )=0A=0A=0A> I tried something similar without great result.=0A> =0A> P
lacing washers between the strut cap and the top of the strut should=0A> ef
fectively change\reduce the pressure of the bungee cord while inflight.=0A>
=0A> Maybe the difference was the amount of friction caused by the cross t
ube=0A> that connects the steering push rods rubbing against the v-notched
channel.=0A> =0A> John Marzulli=0A> =0A> http://MarzulliPhoto.net/=0A> http
://701Builder.blogspot.com/=0A> =0A> =0A> On Sun, Sep 18, 2011 at 5:22 AM,
fritz <klondike@megalink.net> wrote:=0A> =0A>> --> Zenith701801-List messag
e posted by: "fritz" <klondike@megalink.net>=0A>> =0A>> I think that one th
ing that is over looked is the amount of friction caused=0A>> by "excessive
pressure" caused by nose gear bungee if pin isn't- located=0A>> correctl
y.=0A>> =0A>> I too, put a "Teflon washer" between my nose strut top cap an
d the=0A>> "firewall shelf"- BUT compensated by changing the pin location
in the nose=0A>> strut by the same thickness. To lessen the pressure by th
e bungee cord.=0A>> =0A>> Fritz ---- scratch builder=0A>> =0A>> =0A>> -----
Original Message ----- From: "John Marzulli" <=0A>> john.marzulli@gmail.co
m>=0A>> To: <zenith701801-list@matronics.**com <zenith701801-list@matronics
.com>>=0A>> Sent: Sunday, September 18, 2011 5:42 AM=0A>> Subject: Zenith70
1801-List: Rudder friction ( again )=0A>> =0A>> =0A>> =0A>>- I spent an e
ntire day trying to reduce the friction in my rudder system=0A>>> AND=0A>>>
eliminate the nose gear shake I have on landings.=0A>>> =0A>>> The good ne
ws is that I think I have addressed the shake. My old lower=0A>>> nose=0A>>
> gear bearing had a 2mm front-to-back gap in it. I fabricated a new piece
=0A>>> that is a good fit, We will see how that goes.=0A>>> =0A>>> The bad
news is I still have too much friction in the rudder system. The=0A>>> new
lower bearing now needs to wear in and is producing new friction. On=0A>>>
top=0A>>> of that the amount of friction from the strut stop resting on the
shelf is=0A>>> substantial, but less than the strut rubbing on the channel
. I have=0A>>> attempted to address that friction by adding a piece of phen
olic=0A>>> underneath=0A>>> the strut cap. I also tried a piece of 1/8 nylo
n, but that had more=0A>>> friction=0A>>> than the phenolic, but less than
the metal\metal.=0A>>> =0A>>> The roller bearing mod may be the best answer
, but it would require=0A>>> removal=0A>>> of the entire nose strut.=0A>>>
=0A>>> I also found some friction in the rudder pedals by themselves. I hav
e=0A>>> tried=0A>>> every sort of lubrication possible without result. Enla
rging the holes in=0A>>> the nylon block seems like a bad idea. The rudder
and cables were found to=0A>>> be almost frictionless.=0A>>> =0A>>> What ha
ve other builders done to=0A>>> =0A>>> 1) Reduce the rudder pedal friction?
=0A>>> 2) Reduce the nose strut friction?=0A>>> =0A>>> =0A>>> Thanks,=0A>>>
=0A>>> John Marzulli=0A>>> =0A>>> http://MarzulliPhoto.net/=0A>>> http://7
01Builder.blogspot.**com/ <http://701Builder.blogspot.com/>=0A>>> =0A>>>
=- - - - - - - - - - - - - - - -Matt Dralle
========
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