RunRyder RC
WATCH
 4 pages [ <<    <     1     ( 2 )     3      4     NEXT    >> ] 10628 views Post Reply
HomeRC & Power✈️Aircraft🚁HelicopterRadio - Spektrum DSM › Spektrum module for 14MZ, another way to throw away money?
08-01-2007 02:09 AM  13 years ago
MrMel

rrProfessor

Gotland

MyPosts All Forum Topic
Horizon came back with a "non-answer"

"The latency on the module systems is about the same as standard FM modulation, while built in systems are much faster than even SPCM systems. Also the DX7 has servo sync which puts all the servos right next to each other in the data stream. If you have any further questions please feel free to give us a call at 1-877-504-0233."
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-01-2007 02:23 AM  13 years ago
Rodney

rrVeteran

St.Cloud,Florida

MyPosts All Forum Topic
No I have never had a 14mz. But I did have 12z. And no the mp3 player really didnt impress me enough to spend the extra grand. But I have seen many many models crash due to the 14mz. I had programing issues with my 12 that the top futab people could not fix as well. Was somthing like having a boat the 2 happiest days of my life the day I got it and the day I sold it. Would have to say I havent had a crash I could not explain since selling it thats for sure.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-01-2007 03:09 AM  13 years ago
hootowl

rrProfessor

Garnet Valley, Pa.

MyPosts All Forum Topic
That's funny right there.

14's and 12's crashing helis LOL

I have to admit I have crashed many times using my 12Z but it wasn't the radios fault. I may never get rid of this radio.
Wolves don't lose sleep over the opinions of sheep
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
08-01-2007 03:23 AM  13 years ago
d_wheel

rrVeteran

Deep in the heart of Texas.

MyPosts All Forum Topic
really dont understand why anyone would try to use a JR/ spectrum product with futaba. It would be like using a hitec reciver that is compatable with other stuff. Yea it works but is your $1500 and up modle worth the risk. I dont think so. Just buy a DX7 and sell the 14 you will be happier in the long run and have a little cash in your pocket if you sell now. After the 9 comes out good luck selling your 12z and 14mz's.
Yep. We hear those stories about every radio system in existence. Someone can't get to work so it is junk. None of the 14mz's in this area have had any trouble at all. And by the way, the 14 does not have an MP3 player. It uses wav files, which I use frequently to announce maneuvers when a caller isn't handy.

Now back on topic.

MrMel, I just tried it again for about 2 minutes, and can't see any problem with CCPM. As mentioned before, I am only watching servo movements not a swashplate as I do not have a CCPM heli at this time. Perhaps the problem would be more visible while watching a swash move up and down. I am using the default servo positions that the 14mz chooses when you select CCPM, and standard 12 channel PPM. I can't see why they would tell you to change channel assignments, because the 14 also groups all of the CCPM channels together.

Oh yes, one other thing. Am I doing something wrong or do you also have to put the 72mhz module back in to change modulation type? Kind of a pain.

Later;

D.W.
Gettin old aint for sissies!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-01-2007 04:20 AM  13 years ago
turboomni

rrProfessor

East of the Equator

MyPosts All Forum Topic
Non Answer?
Horizon came back with a "non-answer"

"The latency on the module systems is about the same as standard FM modulation, while built in systems are much faster than even SPCM systems. Also the DX7 has servo sync which puts all the servos right next to each other in the data stream
I have read many times a Module conversion to 2.4 is slower than a fully integrated 2.4 unit. Jkos has done many tests on latency and even a JR 9303 with the 2.4 module conversion is a good bit SLOWER than a DX7 for 300 bucks. Do a search as the futaba conversions were even slower,,approaching the very slow Futaba 9C.
Guess what? The top of the line Airtronics has been and still is about the fastest radios out there,. It's been on the market at least 10 years,,,,,,and it's not a 2.4 yet.
Setup is everything, All my heli's can fly far better than I can pilot them
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-01-2007 07:24 AM  13 years ago
MrMel

rrProfessor

Gotland

MyPosts All Forum Topic
Yes its a non-answer since it dont address the real problem.

Its working fine for 80% of the time, then all of the sudden the transmission (or radio, or module or receiver) goes out of sync for a few seconds, then it goes back into-sync again.

Thats not due to the slower FM modulation.

D_wheel, you need to use ccpm to see it.
And yep, you need to put in the old module to change anything with modulation part of the radio.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-01-2007 09:45 AM  13 years ago
squareben

rrNovice

london uk

MyPosts All Forum Topic
just spotted this in the avantrc forum - second last post from augusto

http://www.avantrc.com/support/showthread.php?t=279

seems augusto had similar problems and found a solution.

hope this helps

ben
SHARE  PM  EMAIL  Attn:RR  Quote
08-01-2007 12:54 PM  13 years ago
d_wheel

rrVeteran

Deep in the heart of Texas.

MyPosts All Forum Topic
you need to use ccpm to see it.
And yep, you need to put in the old module to change anything with modulation part of the radio.
I was in CCPM, just didn't have the servos mounted in anything.

Later;

D.W.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-01-2007 12:55 PM  13 years ago
d_wheel

rrVeteran

Deep in the heart of Texas.

MyPosts All Forum Topic
just spotted this in the avantrc forum - second last post from augusto

http://www.avantrc.com/support/showthread.php?t=279

seems augusto had similar problems and found a solution.

hope this helps
My browser will not open the site.. Anyone else having a problem?

D.W.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-01-2007 01:39 PM  13 years ago
MrMel

rrProfessor

Gotland

MyPosts All Forum Topic
Its the same info in that thread thats already posted here (the quote from Augusto).
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-01-2007 02:38 PM  13 years ago
squareben

rrNovice

london uk

MyPosts All Forum Topic
my mistake, didn't read the whole thread
SHARE  PM  EMAIL  Attn:RR  Quote
08-01-2007 04:41 PM  13 years ago
MrMel

rrProfessor

Gotland

MyPosts All Forum Topic
I went out flying today,

Both with my E-stratus (140 degree eCCPM) and nitro stratus (120 degree eCCPM)

It felt bad (all of the sudden it felt like I "bad-stick:ed it" )
Enough to turn 90 degrees on 3 tictocs.
General eCCPM setup was good, when it felt bad it was during rapid pitch changes, then all of the sudden it was ok for a while again.

Ive switched back to DX7 and gonna try tomorrow again just to make sure it wasnt me "looking too hard".

So, Jury is still out.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-01-2007 05:26 PM  13 years ago
d_wheel

rrVeteran

Deep in the heart of Texas.

MyPosts All Forum Topic
It felt bad (all of the sudden it felt like I "bad-stick:ed it" )
Enough to turn 90 degrees on 3 tictocs.
General eCCPM setup was good, when it felt bad it was during rapid pitch changes, then all of the sudden it was ok for a while again.
Darn! I assume the range check went well or you would not have flown. I was hoping it would tide me over until the Futaba module was released. Now, I just don't know. All of the "little problems" add up to a big one, and now the CCPM thing IS a big problem; plus the butt ugly antenna cable hanging off of the back... I will fly it a few times in a plank before making a decision about returning it.

Later;

D.W.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-03-2007 05:35 AM  13 years ago
JKos

rrProfessor

Redondo Beach, CA

MyPosts All Forum Topic
MrMel,
I can definitely see something like what you are seeing. For me, it appears to be perfect for maybe 4/5 to 5/6 of the time and then can get anywhere from just a bit bad to pretty bad the remainder of the time. The cycle seems to repeat at a fairly consistent rate.

I hooked it up to my Vibe, leveled the swash throughout the travel, and then cycled the collective for several minutes. During the good times the swash behaved perfectly during the fastest of collective movements. During the worst bad time even slow collective movements seemed to cause a slight swash tilt like in your video.

I used the channel assignments recommended by the Spektrum instructions (same as Augusto), PPM8, an AR9000 rx, and 9252's running at a regulated 5.5 V.

- John
RR rules!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-03-2007 06:02 AM  13 years ago
MrMel

rrProfessor

Gotland

MyPosts All Forum Topic
Finless did a video over at 14MZ, found the same strange problem.

Im back with DX7 now, went out flying yesterday it flew perfect again.

Sorry Spektrum but that module just dont cut it.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-03-2007 08:23 AM  13 years ago
JKos

rrProfessor

Redondo Beach, CA

MyPosts All Forum Topic
Here's the channel mapping from the 14MZ Function page to the outputs on the AR7000...

14MZ -> AR7000
1 -> 3 (Elev)
2 -> 4 (Rudd)
3 -> 1 (Thro)
4 -> 2 (Aile)
5 -> 5 (Gear)
6 -> 6 (Aux 1)
7 -> 7 (Aux 2)

The channel output order on the AR7000 when used with the DM8 module is: Rudd, Elev, Aile, Aux 1, Thro, Gear, Aux 2

MrMel,
What channels were you using on the AR7000 for the swash?

- John
RR rules!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-03-2007 08:36 AM  13 years ago
MrMel

rrProfessor

Gotland

MyPosts All Forum Topic
Ive tried both.

If I keep spektrums RX layout its REALLY bad.

If I switch Elevator and Gyro (physically on the RX) and adjust 14MZ accordingly so channel are grouped in the 14MZ (same as Augusto pointed out) its better but it still goes out of wack about 20% of the time.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-03-2007 08:39 AM  13 years ago
JKos

rrProfessor

Redondo Beach, CA

MyPosts All Forum Topic
MrMel,
Could you please try rx channels 2, 3, and 4 for the swash? That would be 14MZ channels 1, 2, and 4.

And then rx channels 1, 3, and 4 which are 14MZ channels 1, 2, and 3.

> If I keep spektrums RX layout its REALLY bad.

Ok, then no one else should bother with my suggested layout above. Hmm...

- John
RR rules!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-03-2007 08:57 AM  13 years ago
JKos

rrProfessor

Redondo Beach, CA

MyPosts All Forum Topic
> rx channels 1, 3, and 4 which are 14MZ channels 1, 2, and 3

This is the best combination I have found so far for the DM8 and AR7000.

- John
RR rules!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
08-03-2007 09:05 AM  13 years ago
MrMel

rrProfessor

Gotland

MyPosts All Forum Topic
Could you please try rx channels 2, 3, and 4 for the swash? That would be 14MZ channels 1, 2, and 4.

And then rx channels 1, 3, and 4 which are 14MZ channels 1, 2, and 3.
I get the exact same result on this and the RX: 2,5,6 I used before.

80% of the time its Ok, then its going totally out of wack for a while then back to being good again.

One thing though, if you use RX:1 you loose failsafe...
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 4 pages [ <<    <     1     ( 2 )     3      4     NEXT    >> ] 10628 views Post Reply
HomeRC & Power✈️Aircraft🚁HelicopterRadio - Spektrum DSM › Spektrum module for 14MZ, another way to throw away money?
Print TOPIC

 13  Topic Subscribe

Saturday, September 26 - 9:14 am - Copyright © 2000-2020 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online