PDA

View Full Version : Gyro - is this normal


Kevin
Jan 04, 2003, 09:42 AM
Have just installed a CSM HLG 200 into my Nexus 30 (my first heli).
But a question - when I apply "rudder" the tail rotor pitches in the correct
direction, but when I release the stick, the tail rotor stays in the
deflected position. It will only "neutralise" if I conciously move the
stick to the opposite direction.

Whilst moving the heli (on the ground) left and right, the gyro adjusts the
pitch correctly.

Is this normal for the tail rotor to stay deflected upon releasing the
stick?

Many thanks

Kevin

Martin Round
Jan 04, 2003, 10:23 AM
A heading lock gyro behaves like you say when in heading lock mode.

Doesn't it also have a switchable 'normal' mode? The CSM360, 400
and 540 do, but I'm not familiar with the 200.

Martin.

"Kevin" <kevin.steed@blueyonder.co.uk> wrote in message
news:1hCR9.78$Pe5.43@news-binary.blueyonder.co.uk...
> Have just installed a CSM HLG 200 into my Nexus 30 (my first heli).
> But a question - when I apply "rudder" the tail rotor pitches in the
correct
> direction, but when I release the stick, the tail rotor stays in the
> deflected position. It will only "neutralise" if I conciously move the
> stick to the opposite direction.
>
> Whilst moving the heli (on the ground) left and right, the gyro adjusts
the
> pitch correctly.
>
> Is this normal for the tail rotor to stay deflected upon releasing the
> stick?
>
> Many thanks
>
> Kevin
>
>

Mark Derbyshire
Jan 04, 2003, 10:32 AM
Kevin spewed forth the following in rec.models.rc.helicopter

> Have just installed a CSM HLG 200 into my Nexus 30 (my first heli).
> But a question - when I apply "rudder" the tail rotor pitches in the
> correct direction, but when I release the stick, the tail rotor stays
> in the deflected position. It will only "neutralise" if I conciously
> move the stick to the opposite direction.
>
> Whilst moving the heli (on the ground) left and right, the gyro
> adjusts the pitch correctly.
>
> Is this normal for the tail rotor to stay deflected upon releasing the
> stick?
>

Yes. This is a characteristic of heading hold gyros when on the ground.
Just make sure that before lift off the rudder hasn't tracked over to one
side. It makes it interesting for a couple of seconds if it has

--
Mark

Mark Derbyshire
Jan 04, 2003, 10:32 AM
Martin Round spewed forth the following in rec.models.rc.helicopter

> A heading lock gyro behaves like you say when in heading lock mode.
>
> Doesn't it also have a switchable 'normal' mode? The CSM360, 400
> and 540 do, but I'm not familiar with the 200.
>

The 200 is HH only

--
Mark

Kevin
Jan 04, 2003, 11:02 AM
Ok, thanks for the info.
Fingers crossed for tomorrow then!

Kevin

"Mark Derbyshire" <markNOSPAMMY@ukrm.net> wrote in message
news:Xns92F99D06BDBC5derbysjm@130.133.1.4...
> Kevin spewed forth the following in rec.models.rc.helicopter
>
> > Have just installed a CSM HLG 200 into my Nexus 30 (my first heli).
> > But a question - when I apply "rudder" the tail rotor pitches in the
> > correct direction, but when I release the stick, the tail rotor stays
> > in the deflected position. It will only "neutralise" if I conciously
> > move the stick to the opposite direction.
> >
> > Whilst moving the heli (on the ground) left and right, the gyro
> > adjusts the pitch correctly.
> >
> > Is this normal for the tail rotor to stay deflected upon releasing the
> > stick?
> >
>
> Yes. This is a characteristic of heading hold gyros when on the ground.
> Just make sure that before lift off the rudder hasn't tracked over to one
> side. It makes it interesting for a couple of seconds if it has
>
> --
> Mark

Beav
Jan 04, 2003, 03:34 PM
"Kevin" <kevin.steed@blueyonder.co.uk> wrote in message
news:HpDR9.481$Pe5.252@news-binary.blueyonder.co.uk...
> Ok, thanks for the info.
> Fingers crossed for tomorrow then!

To ensure those interesting few seconds don't happen, get the heli light on
it's skids, then move the tail rotor stick so the heli isn't TRYING to turn,
then lift off.


--
Beav


Please note my E-mail address is "beavis dot original at ntlworld dot com"
(with the obvious changes)

Beavisland now lives at
www.beavisoriginal.co.uk

Kevin Hung
Jan 05, 2003, 10:02 PM
Mark Derbyshire <markNOSPAMMY@ukrm.net> wrote in message news:<Xns92F99D06BDBC5derbysjm@130.133.1.4>...
> Kevin spewed forth the following in rec.models.rc.helicopter
>
> > Have just installed a CSM HLG 200 into my Nexus 30 (my first heli).
> > But a question - when I apply "rudder" the tail rotor pitches in the
> > correct direction, but when I release the stick, the tail rotor stays
> > in the deflected position. It will only "neutralise" if I conciously
> > move the stick to the opposite direction.
> >
> > Whilst moving the heli (on the ground) left and right, the gyro
> > adjusts the pitch correctly.
> >
> > Is this normal for the tail rotor to stay deflected upon releasing the
> > stick?
> >
>
> Yes. This is a characteristic of heading hold gyros when on the ground.
> Just make sure that before lift off the rudder hasn't tracked over to one
> side. It makes it interesting for a couple of seconds if it has


How to make sure that before lift off the rudder hasn't tracked over to one
side ?

Philip Martin
Jan 06, 2003, 01:42 PM
"Kevin Hung" <rdcenter@ms25.hinet.net> wrote in message
news:d4e920bf.0301051837.32b7da71@posting.google.c om...
> How to make sure that before lift off the rudder hasn't tracked over to
one
> side ?

Simple! Given that you'll be tail in as you wind up the power for take off,
just look at the tail pitch slider. If its in the middle of the spindle you
aint gona be far off. It is not then use your control to move it to there:o)

Phil Martin.



---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.431 / Virus Database: 242 - Release Date: 17/12/2002

Kevin Hung
Jan 07, 2003, 12:32 AM
"Philip Martin" <philip.martin1@btinternet.com> wrote in message news:<avchqb$e4h9h$1@ID-129488.news.dfncis.de>...
> "Kevin Hung" <rdcenter@ms25.hinet.net> wrote in message
> news:d4e920bf.0301051837.32b7da71@posting.google.c om...
> > How to make sure that before lift off the rudder hasn't tracked over to
> one
> > side ?
>
> Simple! Given that you'll be tail in as you wind up the power for take off,
> just look at the tail pitch slider. If its in the middle of the spindle you
> aint gona be far off. It is not then use your control to move it to there:o)
>
> Phil Martin.
>
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.431 / Virus Database: 242 - Release Date: 17/12/2002


Thanks !

Mark
Jan 14, 2003, 02:52 PM
The CSM 200 is only a head hold gyro you would have been better with 180
because now you have to keep correcting the rudder all the time with the
200. the net one up that give you head hold and normal flight is the CSM
400.
"Kevin Hung" <rdcenter@ms25.hinet.net> wrote in message
news:d4e920bf.0301051837.32b7da71@posting.google.c om...
> Mark Derbyshire <markNOSPAMMY@ukrm.net> wrote in message
news:<Xns92F99D06BDBC5derbysjm@130.133.1.4>...
> > Kevin spewed forth the following in rec.models.rc.helicopter
> >
> > > Have just installed a CSM HLG 200 into my Nexus 30 (my first heli).
> > > But a question - when I apply "rudder" the tail rotor pitches in the
> > > correct direction, but when I release the stick, the tail rotor stays
> > > in the deflected position. It will only "neutralise" if I conciously
> > > move the stick to the opposite direction.
> > >
> > > Whilst moving the heli (on the ground) left and right, the gyro
> > > adjusts the pitch correctly.
> > >
> > > Is this normal for the tail rotor to stay deflected upon releasing the
> > > stick?
> > >
> >
> > Yes. This is a characteristic of heading hold gyros when on the ground.
> > Just make sure that before lift off the rudder hasn't tracked over to
one
> > side. It makes it interesting for a couple of seconds if it has
>
>
> How to make sure that before lift off the rudder hasn't tracked over to
one
> side ?