No title

W

Wayne

Guest
Hello Everyone,

I am into building an R/C plane. It is from a plan, so I must make most
parts myself. If I can get a positive to my question, my life will be so
much easier. I hope you can help.

I have been told connecting control links, steel to steel, when
rattling, cause RFI, which can lead to lose of control. I should use a
plastic link mated to a steel one.

I have heard steel mated to brass does not produce RFI. In my case,
because of the stresses involved, mating plastic to metal wouldn't work.
The landing gear is involved.

Has anyone ever heard whether brass joined to steel produce RFI ? I
like making things, but, I would like them to work.
,
Any help Gratefully Appreciated.

Thank You

Wayne
 
I Apologize. Occasionally I forget to put a Subject to my e-mails and
News Group posts. I do hope though for a reply to my post ?

Thanks,

Wayne





Hello Everyone,

I am into building an R/C plane. It is from a plan, so I must make
most parts myself. If I can get a positive to my question, my life
will be so much easier. I hope you can help.

I have been told connecting control links, steel to steel, when
rattling, cause RFI, which can lead to lose of control. I should use a
plastic link mated to a steel one.

I have heard steel mated to brass does not produce RFI. In my case,
because of the stresses involved, mating plastic to metal wouldn't
work. The landing gear is involved.

Has anyone ever heard whether brass joined to steel produce RFI ? I
like making things, but, I would like them to work.
,
Any help Gratefully Appreciated.

Thank You

Wayne
Click to expand...
 
In article <3fydnTvkz8eHpo3RnZ2dnUVZ_vidnZ2d@giganews.com>,
"Wayne" <NOwaynerrSPAM@comcast.net> wrote:

Hello Everyone,

I am into building an R/C plane. It is from a plan, so I must make most
parts myself. If I can get a positive to my question, my life will be so
much easier. I hope you can help.

I have been told connecting control links, steel to steel, when
rattling, cause RFI, which can lead to lose of control. I should use a
plastic link mated to a steel one.

I have heard steel mated to brass does not produce RFI. In my case,
because of the stresses involved, mating plastic to metal wouldn't work.
The landing gear is involved.

Has anyone ever heard whether brass joined to steel produce RFI ? I
like making things, but, I would like them to work.
,
Any help Gratefully Appreciated.

Thank You

Wayne
Click to expand...
Any metal to metal rattling on RC systems will cause interference.
There are charges everywhere - electrostatic from air flow, EM from the
motor, EM from magnetism, and the very RF you're trying to receive.
Rapid make/break connections modulates those charges into broadband
noise that will look a lot like the pulse width modulation used for some
RC devices.

If it was an RC car I'd say to run it on a lower voltage battery and
experiment with graphite lubrication on brass linkage. Since falling
out of the sky slowly probably isn't an option, I'd stick to advice from
your peers. The plastic linkage is a lot stronger than you think. I
used them on RC cars and they survived 50 MPH side impact crashes that
ripped the cars in half.
--
I won't see Google Groups replies because I must filter them as spam
 
Hey Kevin,

Thank you for the reply. It, brass to steel, was just something I
imagined hearing eons ago. I guess I don't hear so well.

I guess I will Have to go with a plastic in metal. I am worried about
getting into the plane to fix it should it fail. If it needs fixing, the
plane will be busted open to get to the linkage any way. :)

I will go with plastic to metal. I will take your advice.

Thank You So Much,

Wayne


"Kevin McMurtrie" <mcmurtrie@pixelmemory.us> wrote in message
news:4c11bc21$0$22161$742ec2ed@news.sonic.net...
In article <3fydnTvkz8eHpo3RnZ2dnUVZ_vidnZ2d@giganews.com>,
"Wayne" <NOwaynerrSPAM@comcast.net> wrote:

Hello Everyone,

I am into building an R/C plane. It is from a plan, so I must make
most
parts myself. If I can get a positive to my question, my life will be
so
much easier. I hope you can help.

I have been told connecting control links, steel to steel, when
rattling, cause RFI, which can lead to lose of control. I should use
a
plastic link mated to a steel one.

I have heard steel mated to brass does not produce RFI. In my case,
because of the stresses involved, mating plastic to metal wouldn't
work.
The landing gear is involved.

Has anyone ever heard whether brass joined to steel produce RFI ? I
like making things, but, I would like them to work.
,
Any help Gratefully Appreciated.

Thank You

Wayne

Any metal to metal rattling on RC systems will cause interference.
There are charges everywhere - electrostatic from air flow, EM from
the
motor, EM from magnetism, and the very RF you're trying to receive.
Rapid make/break connections modulates those charges into broadband
noise that will look a lot like the pulse width modulation used for
some
RC devices.

If it was an RC car I'd say to run it on a lower voltage battery and
experiment with graphite lubrication on brass linkage. Since falling
out of the sky slowly probably isn't an option, I'd stick to advice
from
your peers. The plastic linkage is a lot stronger than you think. I
used them on RC cars and they survived 50 MPH side impact crashes that
ripped the cars in half.
--
I won't see Google Groups replies because I must filter them as spam
Click to expand...
 
Hey Kevin,

Thank you for the reply. It, brass to steel, was just something I
imagined hearing eons ago. I guess I don't hear so well.

I guess I will Have to go with a plastic in metal. I am worried about
getting into the plane to fix it should it fail. If it needs fixing,
the plane will be busted open to get to the linkage any way. :)

I will go with plastic to metal. I will take your advice.

Thank You So Much,

Wayne


"Kevin McMurtrie" <mcmurtrie@pixelmemory.us> wrote in message
news:4c11bc21$0$22161$742ec2ed@news.sonic.net...
In article <3fydnTvkz8eHpo3RnZ2dnUVZ_vidnZ2d@giganews.com>,
"Wayne" <NOwaynerrSPAM@comcast.net> wrote:

Hello Everyone,

I am into building an R/C plane. It is from a plan, so I must make
most
parts myself. If I can get a positive to my question, my life will
be so
much easier. I hope you can help.

I have been told connecting control links, steel to steel, when
rattling, cause RFI, which can lead to lose of control. I should use
a
plastic link mated to a steel one.

I have heard steel mated to brass does not produce RFI. In my case,
because of the stresses involved, mating plastic to metal wouldn't
work.
The landing gear is involved.

Has anyone ever heard whether brass joined to steel produce RFI ? I
like making things, but, I would like them to work.
,
Any help Gratefully Appreciated.

Thank You

Wayne

Any metal to metal rattling on RC systems will cause interference.
There are charges everywhere - electrostatic from air flow, EM from
the
motor, EM from magnetism, and the very RF you're trying to receive.
Rapid make/break connections modulates those charges into broadband
noise that will look a lot like the pulse width modulation used for
some
RC devices.

If it was an RC car I'd say to run it on a lower voltage battery and
experiment with graphite lubrication on brass linkage. Since falling
out of the sky slowly probably isn't an option, I'd stick to advice
from
your peers. The plastic linkage is a lot stronger than you think. I
used them on RC cars and they survived 50 MPH side impact crashes
that
ripped the cars in half.
--
I won't see Google Groups replies because I must filter them as spam
Click to expand...

I apologize for the top post.

Wayne
 
Thank you for the reply. It, brass to steel, was just something I
imagined hearing eons ago. I guess I don't hear so well.

I guess I will Have to go with a plastic in metal. I am worried about
getting into the plane to fix it should it fail. If it needs fixing,
the
plane will be busted open to get to the linkage any way. :)

The other altenative would simply be to conect them together
properly. Solder on a short length of enamelled copper wire or
similar to both components. Not rigid enough to foul the joint but
enough to ensure they are both at the same potential.

Having said that, although it's been a while since I did R/C airfraft
I had perfectly satisfactory results with plastic horns and clevises.
I do remember seeing somes clevises that I really didn't like the
look of but apply common sense: if it looks _too_ flimsy don't
trust it.

--
Andrew Smallshaw
andrews@sdf.lonestar.org
Click to expand...

Hey Andrew,

Thanks for the input. Both points seem sound. The bridge between the
two, with small AWG wire, seems simple enough. I even have the wire I
would use. I like alternatives. I will see if I can make it work.

You both have pointed to the strength of the plastic clevises. If for
some reason I go that route, I will pick some at the LHS by inspection,
not just grab to first on the rack.

Thank You Both for the advice. I feel better already. This is a Good
Thing.

Again, Thanks,

Wayne
 
On 2010-06-11, Wayne <NOwaynerrSPAM@comcast.net> wrote:
Thank you for the reply. It, brass to steel, was just something I
imagined hearing eons ago. I guess I don't hear so well.

I guess I will Have to go with a plastic in metal. I am worried about
getting into the plane to fix it should it fail. If it needs fixing, the
plane will be busted open to get to the linkage any way. :)
Click to expand...
The other altenative would simply be to conect them together
properly. Solder on a short length of enamelled copper wire or
similar to both components. Not rigid enough to foul the joint but
enough to ensure they are both at the same potential.

Having said that, although it's been a while since I did R/C airfraft
I had perfectly satisfactory results with plastic horns and clevises.
I do remember seeing somes clevises that I really didn't like the
look of but apply common sense: if it looks _too_ flimsy don't
trust it.

--
Andrew Smallshaw
andrews@sdf.lonestar.org
 
On Wed, 9 Jun 2010 21:08:42 -0400, "Wayne" <NOwaynerrSPAM@comcast.net>
wrote:

Hello Everyone,

I am into building an R/C plane. It is from a plan, so I must make most
parts myself. If I can get a positive to my question, my life will be so
much easier. I hope you can help.

I have been told connecting control links, steel to steel, when
rattling, cause RFI, which can lead to lose of control. I should use a
plastic link mated to a steel one.

I have heard steel mated to brass does not produce RFI. In my case,
because of the stresses involved, mating plastic to metal wouldn't work.
The landing gear is involved.

Has anyone ever heard whether brass joined to steel produce RFI ? I
like making things, but, I would like them to work.
,
Any help Gratefully Appreciated.
Click to expand...
---
Google Delrin
 
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