JR 783 to CCPM HELP

JR 783 to CCPM HELP

Post by Isaac fajgenba » Tue, 02 Oct 2001 02:42:00



Hello,  I have a JR 783 Radio that I want to add the CCPM program.

 I dont want to send the radio to Horizon.

I hear that this radio has the CCPM program in the radio memory but it
has to be activated pressing the programs buttons in a special
sequency to activate the CCPM funtions.

Do you know is this is true???? Have any body has done this.

THX

Isaac

 
 
 

JR 783 to CCPM HELP

Post by RC-CA » Tue, 02 Oct 2001 11:30:57


I agree, it must be something very simple. Horizon only charges $15 to
activate the CCPM mode, so that suggests that the bench time is minimal.

I have tried every keypress combo to see if a special mode can be invoked.
This has yielded nothing. Perhaps there is an internal jumper or a pair of
shorting pads that need to be tickled to activate an additional menu.

There is a small chance that the microcontroller has flash memory that
allows Horizon to quickly reprogram it. But given the vintage of the XP783
and the historical engineering of the JR line, I doubt this is true.

Somewhere out there is an ex-horizon tech that will share the secrete. Until
then, JR/Horizon service is the best route to get it enabled. $15 + shipping
both ways is not a big deal. But I am curious, so I will keep searching for
the answer.

Sorry I could not help. Good luck!

Regards,
Mr. RC-CAM
http://www.rc-cam.com/
R/C Wireless Heli Camera Project


Quote:
> Hello,  I have a JR 783 Radio that I want to add the CCPM program.

>  I dont want to send the radio to Horizon.

> I hear that this radio has the CCPM program in the radio memory but it
> has to be activated pressing the programs buttons in a special
> sequency to activate the CCPM funtions.

> Do you know is this is true???? Have any body has done this.

> THX

> Isaac


 
 
 

JR 783 to CCPM HELP

Post by Gareth Glaccu » Tue, 02 Oct 2001 18:56:56


How about you ease the case open, take a digital photo and then re-clse the
case. Then after teh service, do the same and compare the images. If there are
any differences on the PCB then you can sell the info to interested parties for
$5 a go!
BTW, what is CCPM? What are the differences between a normal setup?

Gareth
From RC-CAM on Mon, 01 Oct 2001 02:30:57 GMT

Quote:

>I agree, it must be something very simple. Horizon only charges $15 to
>activate the CCPM mode, so that suggests that the bench time is minimal.

>I have tried every keypress combo to see if a special mode can be invoked.
>This has yielded nothing. Perhaps there is an internal jumper or a pair of
>shorting pads that need to be tickled to activate an additional menu.

>There is a small chance that the microcontroller has flash memory that
>allows Horizon to quickly reprogram it. But given the vintage of the XP783
>and the historical engineering of the JR line, I doubt this is true.

>Somewhere out there is an ex-horizon tech that will share the secrete. Until
>then, JR/Horizon service is the best route to get it enabled. $15 + shipping
>both ways is not a big deal. But I am curious, so I will keep searching for
>the answer.

>Sorry I could not help. Good luck!

>Regards,
>Mr. RC-CAM
>http://www.rc-cam.com/
>R/C Wireless Heli Camera Project



>> Hello,  I have a JR 783 Radio that I want to add the CCPM program.

>>  I dont want to send the radio to Horizon.

>> I hear that this radio has the CCPM program in the radio memory but it
>> has to be activated pressing the programs buttons in a special
>> sequency to activate the CCPM funtions.

>> Do you know is this is true???? Have any body has done this.

>> THX

>> Isaac

 
 
 

JR 783 to CCPM HELP

Post by Jon » Wed, 03 Oct 2001 11:25:03


CCPM is a different arrangment of servos, in turn it moves the swashplate
differently.  They are setup (usually) right around the main mast  and with
this setup, (although usually requiring some special brakets), has much less
slop in the overall system.  Becuase all of the servos, are connected
DIRECTLY to the swashplate, meaning, they use only 1 conecting rod.  So
there are no unneeded ball joints and plastic arms all over the place.  and
witht he 3 servos setup 120 degrees apart, they control the evevator,
aileron, and collective. by all moving in sync, they can tilt and push the
swashplate into submission.  :)

Heres a nice picture of a CCPM upgrade kit
http://www.heli-world.com/centuryheli/ccpm/C_ccpm.html

HTH
Buzz1167
Jon N

Quote:
> How about you ease the case open, take a digital photo and then re-clse
the
> case. Then after teh service, do the same and compare the images. If there
are
> any differences on the PCB then you can sell the info to interested
parties for
> $5 a go!
> BTW, what is CCPM? What are the differences between a normal setup?

> Gareth
> From RC-CAM on Mon, 01 Oct 2001 02:30:57 GMT

> >I agree, it must be something very simple. Horizon only charges $15 to
> >activate the CCPM mode, so that suggests that the bench time is minimal.

> >I have tried every keypress combo to see if a special mode can be
invoked.
> >This has yielded nothing. Perhaps there is an internal jumper or a pair
of
> >shorting pads that need to be tickled to activate an additional menu.

> >There is a small chance that the microcontroller has flash memory that
> >allows Horizon to quickly reprogram it. But given the vintage of the
XP783
> >and the historical engineering of the JR line, I doubt this is true.

> >Somewhere out there is an ex-horizon tech that will share the secrete.
Until
> >then, JR/Horizon service is the best route to get it enabled. $15 + shipp
ing
> >both ways is not a big deal. But I am curious, so I will keep searching
for
> >the answer.

> >Sorry I could not help. Good luck!

> >Regards,
> >Mr. RC-CAM
> >http://www.rc-cam.com/
> >R/C Wireless Heli Camera Project



> >> Hello,  I have a JR 783 Radio that I want to add the CCPM program.

> >>  I dont want to send the radio to Horizon.

> >> I hear that this radio has the CCPM program in the radio memory but it
> >> has to be activated pressing the programs buttons in a special
> >> sequency to activate the CCPM funtions.

> >> Do you know is this is true???? Have any body has done this.

> >> THX

> >> Isaac

 
 
 

JR 783 to CCPM HELP

Post by Gareth Glaccu » Wed, 03 Oct 2001 20:23:18


So at what angles are the servo normally and how many?
I can see how structurally, 3 is better thatn 2, but the mixing on them would
have to be perfect in order not to damage them.
Gareth
From Jon N on Tue, 02 Oct 2001 02:25:03 GMT
Quote:

>CCPM is a different arrangment of servos, in turn it moves the swashplate
>differently.  They are setup (usually) right around the main mast  and with
>this setup, (although usually requiring some special brakets), has much less
>slop in the overall system.  Becuase all of the servos, are connected
>DIRECTLY to the swashplate, meaning, they use only 1 conecting rod.  So
>there are no unneeded ball joints and plastic arms all over the place.  and
>witht he 3 servos setup 120 degrees apart, they control the evevator,
>aileron, and collective. by all moving in sync, they can tilt and push the
>swashplate into submission.  :)

>Heres a nice picture of a CCPM upgrade kit
>http://www.heli-world.com/centuryheli/ccpm/C_ccpm.html

>HTH
>Buzz1167
>Jon N


>> How about you ease the case open, take a digital photo and then re-clse
>the
>> case. Then after teh service, do the same and compare the images. If there
>are
>> any differences on the PCB then you can sell the info to interested
>parties for
>> $5 a go!
>> BTW, what is CCPM? What are the differences between a normal setup?

>> Gareth
>> From RC-CAM on Mon, 01 Oct 2001 02:30:57 GMT

>> >I agree, it must be something very simple. Horizon only charges $15 to
>> >activate the CCPM mode, so that suggests that the bench time is minimal.

>> >I have tried every keypress combo to see if a special mode can be
>invoked.
>> >This has yielded nothing. Perhaps there is an internal jumper or a pair
>of
>> >shorting pads that need to be tickled to activate an additional menu.

>> >There is a small chance that the microcontroller has flash memory that
>> >allows Horizon to quickly reprogram it. But given the vintage of the
>XP783
>> >and the historical engineering of the JR line, I doubt this is true.

>> >Somewhere out there is an ex-horizon tech that will share the secrete.
>Until
>> >then, JR/Horizon service is the best route to get it enabled. $15 + shipp
>ing
>> >both ways is not a big deal. But I am curious, so I will keep searching
>for
>> >the answer.

>> >Sorry I could not help. Good luck!

>> >Regards,
>> >Mr. RC-CAM
>> >http://www.rc-cam.com/
>> >R/C Wireless Heli Camera Project



>> >> Hello,  I have a JR 783 Radio that I want to add the CCPM program.

>> >>  I dont want to send the radio to Horizon.

>> >> I hear that this radio has the CCPM program in the radio memory but it
>> >> has to be activated pressing the programs buttons in a special
>> >> sequency to activate the CCPM funtions.

>> >> Do you know is this is true???? Have any body has done this.

>> >> THX

>> >> Isaac

 
 
 

JR 783 to CCPM HELP

Post by Guy Nichola » Thu, 04 Oct 2001 00:57:00


The main difference between CCPM and mechanical mixing is that in a
mechanically mixed system one servo does one function.  One servo controls
lateral cyclic, one servo controls fore aft cyclic, and the third servo
controls the collective pitch.  The trick with this type setup is to get a
collective servo to move the swashplate without affecting the cyclic
control.  There are a number of ways to do that, Millenium has the two
cyclic servos mounted in servo trays that rock back and forth, and then the
collective servo actually moves the servos in their trays.

CCPM on the other hand electronically mixes the controls.  So for example on
my Fury with 120deg CCPM, one connection to the swashplate is dead center on
the back and the other two are 120deg from that on either side.  If I give
the heli left stick two servos move, the one on the left front moves the
swash down, and the one on the right front moves the swash up.  If I now
change the collective, all three servos will move to adjust the swash up or
down.

Later, Guy

 
 
 

JR 783 to CCPM HELP

Post by Guy Nichola » Fri, 05 Oct 2001 16:45:07


Quote:
> the slack in the swashplate is from the servos moving out of position. Is
it
> worth a beginner converting a raptor to ccpm, or should I get to a stage
> where the heli is made and I am confident with hovering before messing it
up
> and possibly spending a lot of time wondering why it isn't working
properly?
> Gareth

How much slack do you have?  Have you finished building it yet?  My Raptor
has a couple hundred flights on it and the swash is getting a bit on the
sloppy side :)  The collective servo is getting rattled and it does a lot of
twisting when it moves.  But it still flys fine.  I would upgrade the Raptor
at all, I have seen a guy with what we called the $2000 Raptor, every
upgrade you could possibly imagine.  Still didn't fly all that much better
than my stock one.  Just fly it until you outgrow it and get a fancier .60
sized bird.  Remember a basic crash on a Raptor is about $40....a basic
crash on a .60 is probably about $200.

Good luck, Guy