JR PCM 10 Z experts

[Adam Tucker]

Ok JR experts. I was trimming out my Xcell CT YS80 with my newly
acquired RS700 blades, I knew the bird would react differently to the
larger blades and it showed in FFF the tail got to hunting, I landed to
Adjust the gain of my CSM360 down a tad, I noticed upon my landing (in
throttle hold) that the blades
Where still turning a bit and in fact the engine appeared to be idling
higher after landing, I figured it was
The mass of the larger blades, BUT I go to take off and I have NOTHING,
no control what so ever. For
Safety sake (actually looking for words of wisdom too) I announce my
dilemma. I tried power cycling my
TX, no help. All this time my voltwatcher is showing good voltage, so RX
has good voltage to it, I have
Plenty of fuel too (darn it) so against better judgement my friend agrees
to lift it by the tail while I climb under to pull fuel line. Atleast it
won't go run amuck or chicken dance now. We took it straight to a table
And pulled the crystal and reinserted, no help. REMIND you it is NOT in
failsafe, all servos are free to move about. So if the crystal went
south, it should have been in failsafe, same goes if my TX was off, It
Just went into no mans land. NOW the real scary part, power cycling the
RX, i.e. turned it off and on and
All worked OK, not leaving me with any warm and fuzzies. I checked the RX
with vibrating dremel, no
Troubles found. It like it needed a 3 finger reset, you know control alt
delete and a reboot. Has anyone
Seen or heard of this before? Is it worth it to send it in ? What's the
checkout fee?

This a 910 PCM10 receiver.

[David Smith]

"Adam Tucker" <rckrzy21@earthlink.removetheone.net> wrote in message
news:MPG.1855386249bcd2f99896c8@news.earthlink.net ...
> Ok JR experts. I was trimming out my Xcell CT YS80 with my newly
> acquired RS700 blades, I knew the bird would react differently to the
> larger blades and it showed in FFF the tail got to hunting, I landed to
> Adjust the gain of my CSM360 down a tad, I noticed upon my landing (in
> throttle hold) that the blades
> Where still turning a bit and in fact the engine appeared to be idling
> higher after landing, I figured it was
> The mass of the larger blades, BUT I go to take off and I have NOTHING,
> no control what so ever. For
> Safety sake (actually looking for words of wisdom too) I announce my
> dilemma. I tried power cycling my
> TX, no help. All this time my voltwatcher is showing good voltage, so RX
> has good voltage to it, I have
> Plenty of fuel too (darn it) so against better judgement my friend agrees
> to lift it by the tail while I climb under to pull fuel line. Atleast it
> won't go run amuck or chicken dance now. We took it straight to a table
> And pulled the crystal and reinserted, no help. REMIND you it is NOT in
> failsafe, all servos are free to move about. So if the crystal went
> south, it should have been in failsafe, same goes if my TX was off, It
> Just went into no mans land. NOW the real scary part, power cycling the
> RX, i.e. turned it off and on and
> All worked OK, not leaving me with any warm and fuzzies. I checked the RX
> with vibrating dremel, no
> Troubles found. It like it needed a 3 finger reset, you know control alt
> delete and a reboot. Has anyone
> Seen or heard of this before? Is it worth it to send it in ? What's the
> checkout fee?
>
> This a 910 PCM10 receiver.

I would point a finger at the switch harness. If that goes, then the
failsafe can't operate, and turning off and on again could clear it.

--
Dave S, Kuusankoski, Finland.

My return address requires modification before use.
http://personal.inet.fi/koti/david.smith/helicopters/

[Peter]

If the servos are free to move, you have no power to them. Switch or battery
connection?

--

Peter Wales in Sunny Orlando
http://home.cfl.rr.com/pwales/
http://scalehelicopters.org
"Adam Tucker" <rckrzy21@earthlink.removetheone.net> wrote in message
news:MPG.1855386249bcd2f99896c8@news.earthlink.net ...
> Ok JR experts. I was trimming out my Xcell CT YS80 with my newly
> acquired RS700 blades, I knew the bird would react differently to the
> larger blades and it showed in FFF the tail got to hunting, I landed to
> Adjust the gain of my CSM360 down a tad, I noticed upon my landing (in
> throttle hold) that the blades
> Where still turning a bit and in fact the engine appeared to be idling
> higher after landing, I figured it was
> The mass of the larger blades, BUT I go to take off and I have NOTHING,
> no control what so ever. For
> Safety sake (actually looking for words of wisdom too) I announce my
> dilemma. I tried power cycling my
> TX, no help. All this time my voltwatcher is showing good voltage, so RX
> has good voltage to it, I have
> Plenty of fuel too (darn it) so against better judgement my friend agrees
> to lift it by the tail while I climb under to pull fuel line. Atleast it
> won't go run amuck or chicken dance now. We took it straight to a table
> And pulled the crystal and reinserted, no help. REMIND you it is NOT in
> failsafe, all servos are free to move about. So if the crystal went
> south, it should have been in failsafe, same goes if my TX was off, It
> Just went into no mans land. NOW the real scary part, power cycling the
> RX, i.e. turned it off and on and
> All worked OK, not leaving me with any warm and fuzzies. I checked the RX
> with vibrating dremel, no
> Troubles found. It like it needed a 3 finger reset, you know control alt
> delete and a reboot. Has anyone
> Seen or heard of this before? Is it worth it to send it in ? What's the
> checkout fee?
>
> This a 910 PCM10 receiver.
>

[Beav]

"Adam Tucker" <rckrzy21@earthlink.removetheone.net> wrote in message
news:MPG.1855386249bcd2f99896c8@news.earthlink.net ...
> Ok JR experts. I was trimming out my Xcell CT YS80 with my newly
> acquired RS700 blades, I knew the bird would react differently to the
> larger blades and it showed in FFF the tail got to hunting, I landed to
> Adjust the gain of my CSM360 down a tad, I noticed upon my landing (in
> throttle hold) that the blades
> Where still turning a bit and in fact the engine appeared to be idling
> higher after landing, I figured it was
> The mass of the larger blades, BUT I go to take off and I have NOTHING,
> no control what so ever. For
> Safety sake (actually looking for words of wisdom too) I announce my
> dilemma. I tried power cycling my
> TX, no help. All this time my voltwatcher is showing good voltage, so RX
> has good voltage to it, I have
> Plenty of fuel too (darn it) so against better judgement my friend agrees
> to lift it by the tail while I climb under to pull fuel line. Atleast it
> won't go run amuck or chicken dance now. We took it straight to a table
> And pulled the crystal and reinserted, no help. REMIND you it is NOT in
> failsafe, all servos are free to move about.

When you say "free to move about" are you meaning they're not locked in
position and YOU can move them about with yer fingers? If they aren't
holding and you CAN move them by finger pressure while the radio (Tx AND Rx)
is turned on, then you're not getting power to the Rx.

So if the crystal went
> south, it should have been in failsafe,

Nope! If the crystal shits the bed, then the servo's don't move to their
failsafe position, the just stop responding to the Tx in a similar way to
having no power at the Rx end of things.

same goes if my TX was off,

If the Tx went off, then it WOULD go to failsafe (all other things being
equal) and your servo's wouldn't move under finger pressure.


It
> Just went into no mans land. NOW the real scary part, power cycling the
> RX, i.e. turned it off and on and
> All worked OK, not leaving me with any warm and fuzzies.

Bin the crystal and the switch. Don't risk a heli (or surrounding grassy
area's) for a few quids worth of wires.

I checked the RX
> with vibrating dremel, no
> Troubles found. It like it needed a 3 finger reset, you know control alt
> delete and a reboot. Has anyone
> Seen or heard of this before? Is it worth it to send it in ?

I'd change the things I've mentioned, then strap the heli down and run some
tests before I'd send it off for checking. Of course that won't help if
nothing goes wrong coz you'll still be wondering, so it wouldn't hurt to get
it checked out, but send EVERYTHING that's in the link. Crystal, Rx, Switch,
Tx and battery. Don't piss about sending JUST the Rx.

What's the
> checkout fee?

No idea:-(

>
> This a 910 PCM10 receiver.

I've never had this happen with JR gear, so I suspect it's something more
basic than a Rx fault. Switch and crystal.



--
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

[Andy Carpenter]

> I would point a finger at the switch harness. If that goes, then the
> failsafe can't operate, and turning off and on again could clear it.
>
> --
> Dave S, Kuusankoski, Finland.
>
> My return address requires modification before use.
> http://personal.inet.fi/koti/david.smith/helicopters/
>


That would be a good start point, but given that the Voltwatch was still
showing a reading he must have had power at the RX (Voltwatch plugs into a
spare channel)

I'd personally send the RX off for a thorough check up

Carps

[David Smith]

"Andy Carpenter" <andy@REMOVEcarpsTHE.coUPPER.ukCASE> wrote in message
news:asgdc4$6i1$1@knossos.btinternet.com...
>
> > I would point a finger at the switch harness. If that goes, then the
> > failsafe can't operate, and turning off and on again could clear it.
> >
> > --
> > Dave S, Kuusankoski, Finland.
> >
> > My return address requires modification before use.
> > http://personal.inet.fi/koti/david.smith/helicopters/
> >
>
>
> That would be a good start point, but given that the Voltwatch was still
> showing a reading he must have had power at the RX (Voltwatch plugs into a
> spare channel)
>
> I'd personally send the RX off for a thorough check up
>
> Carps
>
>
You got me, I didn't spot the bit about the voltwatch!

Dave S

[Anne-Marie Maddison]

take out the battery from the heli and turn on the power ,wiggle the battery
tags on the cells under the heat sink to see if the connection breaks .if
the tag is touching but is broken it will work and then break at a certain
resonance . This happened to me twice in succsession ,i changed the reciver
twice,the switch harness but never thought about the battery until it had
thrashed itself to death on the floor thinking it was a rotorvator .

Ben
"Beav" <beavis.original@ntloxoworld.com> wrote in message
news:FxLG9.335237$H65.38006@post-02.news.easynews.com...
>
> "Adam Tucker" <rckrzy21@earthlink.removetheone.net> wrote in message
> news:MPG.1855386249bcd2f99896c8@news.earthlink.net ...
> > Ok JR experts. I was trimming out my Xcell CT YS80 with my newly
> > acquired RS700 blades, I knew the bird would react differently to the
> > larger blades and it showed in FFF the tail got to hunting, I landed to
> > Adjust the gain of my CSM360 down a tad, I noticed upon my landing (in
> > throttle hold) that the blades
> > Where still turning a bit and in fact the engine appeared to be idling
> > higher after landing, I figured it was
> > The mass of the larger blades, BUT I go to take off and I have NOTHING,
> > no control what so ever. For
> > Safety sake (actually looking for words of wisdom too) I announce my
> > dilemma. I tried power cycling my
> > TX, no help. All this time my voltwatcher is showing good voltage, so RX
> > has good voltage to it, I have
> > Plenty of fuel too (darn it) so against better judgement my friend
agrees
> > to lift it by the tail while I climb under to pull fuel line. Atleast it
> > won't go run amuck or chicken dance now. We took it straight to a table
> > And pulled the crystal and reinserted, no help. REMIND you it is NOT in
> > failsafe, all servos are free to move about.
>
> When you say "free to move about" are you meaning they're not locked in
> position and YOU can move them about with yer fingers? If they aren't
> holding and you CAN move them by finger pressure while the radio (Tx AND
Rx)
> is turned on, then you're not getting power to the Rx.
>
> So if the crystal went
> > south, it should have been in failsafe,
>
> Nope! If the crystal shits the bed, then the servo's don't move to their
> failsafe position, the just stop responding to the Tx in a similar way to
> having no power at the Rx end of things.
>
> same goes if my TX was off,
>
> If the Tx went off, then it WOULD go to failsafe (all other things being
> equal) and your servo's wouldn't move under finger pressure.
>
>
> It
> > Just went into no mans land. NOW the real scary part, power cycling the
> > RX, i.e. turned it off and on and
> > All worked OK, not leaving me with any warm and fuzzies.
>
> Bin the crystal and the switch. Don't risk a heli (or surrounding grassy
> area's) for a few quids worth of wires.
>
> I checked the RX
> > with vibrating dremel, no
> > Troubles found. It like it needed a 3 finger reset, you know control
alt
> > delete and a reboot. Has anyone
> > Seen or heard of this before? Is it worth it to send it in ?
>
> I'd change the things I've mentioned, then strap the heli down and run
some
> tests before I'd send it off for checking. Of course that won't help if
> nothing goes wrong coz you'll still be wondering, so it wouldn't hurt to
get
> it checked out, but send EVERYTHING that's in the link. Crystal, Rx,
Switch,
> Tx and battery. Don't piss about sending JUST the Rx.
>
> What's the
> > checkout fee?
>
> No idea:-(
>
> >
> > This a 910 PCM10 receiver.
>
> I've never had this happen with JR gear, so I suspect it's something more
> basic than a Rx fault. Switch and crystal.
>
>
>
> --
> 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
>
>

[Lindsay & Sue Henderson]

I have seen this once and it was a cracked crystal and under some vibs would not
react to signals and then would come good. The others are correct with the
switch even the best is generally considered poor quality for the type of use we
put them to.


Beav wrote:

> "Adam Tucker" <rckrzy21@earthlink.removetheone.net> wrote in message
> news:MPG.1855386249bcd2f99896c8@news.earthlink.net ...
> > Ok JR experts. I was trimming out my Xcell CT YS80 with my newly
> > acquired RS700 blades, I knew the bird would react differently to the
> > larger blades and it showed in FFF the tail got to hunting, I landed to
> > Adjust the gain of my CSM360 down a tad, I noticed upon my landing (in
> > throttle hold) that the blades
> > Where still turning a bit and in fact the engine appeared to be idling
> > higher after landing, I figured it was
> > The mass of the larger blades, BUT I go to take off and I have NOTHING,
> > no control what so ever. For
> > Safety sake (actually looking for words of wisdom too) I announce my
> > dilemma. I tried power cycling my
> > TX, no help. All this time my voltwatcher is showing good voltage, so RX
> > has good voltage to it, I have
> > Plenty of fuel too (darn it) so against better judgement my friend agrees
> > to lift it by the tail while I climb under to pull fuel line. Atleast it
> > won't go run amuck or chicken dance now. We took it straight to a table
> > And pulled the crystal and reinserted, no help. REMIND you it is NOT in
> > failsafe, all servos are free to move about.
>
> When you say "free to move about" are you meaning they're not locked in
> position and YOU can move them about with yer fingers? If they aren't
> holding and you CAN move them by finger pressure while the radio (Tx AND Rx)
> is turned on, then you're not getting power to the Rx.
>
> So if the crystal went
> > south, it should have been in failsafe,
>
> Nope! If the crystal shits the bed, then the servo's don't move to their
> failsafe position, the just stop responding to the Tx in a similar way to
> having no power at the Rx end of things.
>
> same goes if my TX was off,
>
> If the Tx went off, then it WOULD go to failsafe (all other things being
> equal) and your servo's wouldn't move under finger pressure.
>
> It
> > Just went into no mans land. NOW the real scary part, power cycling the
> > RX, i.e. turned it off and on and
> > All worked OK, not leaving me with any warm and fuzzies.
>
> Bin the crystal and the switch. Don't risk a heli (or surrounding grassy
> area's) for a few quids worth of wires.
>
> I checked the RX
> > with vibrating dremel, no
> > Troubles found. It like it needed a 3 finger reset, you know control alt
> > delete and a reboot. Has anyone
> > Seen or heard of this before? Is it worth it to send it in ?
>
> I'd change the things I've mentioned, then strap the heli down and run some
> tests before I'd send it off for checking. Of course that won't help if
> nothing goes wrong coz you'll still be wondering, so it wouldn't hurt to get
> it checked out, but send EVERYTHING that's in the link. Crystal, Rx, Switch,
> Tx and battery. Don't piss about sending JUST the Rx.
>
> What's the
> > checkout fee?
>
> No idea:-(
>
> >
> > This a 910 PCM10 receiver.
>
> I've never had this happen with JR gear, so I suspect it's something more
> basic than a Rx fault. Switch and crystal.
>
> --
> 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