RE: setting idle on electric model

RE: setting idle on electric model
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RE: setting idle on electric model - 6/10/2007 5:30:53 PM

shannah

Posts: 205
Joined: 9/6/2004
From: placentia, CA, USA
Status: offline

I reset the endpoint to be below 1.7ms and set the low end to turn on when my 9Z slider just passes the "beep". Worked great. Throttle curve is pretty close to the one Woodie shows. It works pretty good. I am happy. Just flew my first complete P-07 sequence, now I can start practicing.

Thanks

(in reply to xalm04)

Post #: 26

RE: setting idle on electric model - 6/10/2007 5:51:45 PM

OhD

Posts: 410
Joined: 10/23/2002
From: west hills, CA, USA
Status: offline

I tried the logrithmic curve on the Spin 99/DualSky combination and at first thought it was worse as far as rough startup. However I can see if you start it aggressively it will always start in the right direction so it might work better for geared motors. Then I tried the exponential curve. It is the softest start of all but will start in the wrong direction some of the time. However it has by far the best idle and smoothness coming off of idle. I had it running at 200 rpm. Almost as good as my new ceiling fan. I don't know what that curve looks like so I guess I'll have to map it if I get a tachometer working.

Jim O

(in reply to shannah)

Post #: 27

RE: setting idle on electric model - 6/11/2007 9:40:58 PM

OhD

Posts: 410
Joined: 10/23/2002
From: west hills, CA, USA
Status: offline

quote:

ORIGINAL: OhD

I tried the logrithmic curve on the Spin 99/DualSky combination and at first thought it was worse as far as rough startup. However I can see if you start it aggressively it will always start in the right direction so it might work better for geared motors. Then I tried the exponential curve. It is the softest start of all but will start in the wrong direction some of the time. However it has by far the best idle and smoothness coming off of idle. I had it running at 200 rpm. Almost as good as my new ceiling fan. I don't know what that curve looks like so I guess I'll have to map it if I get a tachometer working.

Jim O

I tried to fly with the expo curve today and knew I was in trouble when it took 1/3 throttle to taxi out. The flight was terrible. It was like flying a two stroke with no mid range power. I might be able to compensate for it with the throttle curve in the transmitter but didn't try today. The idle was great and I only used 2694 mAh for the Master's sequence but it is not the way to go.
I went back to linear on the next flight and thought I heard a couple of cutouts during the flight. On the third flight I heard something on the bottom of the Figure M that sounded like something broke. I throttled back and landed okay but it looks like there is still something wrong with the Spin 99s. Is there any success stories with the Spin 75? I really like the data logging feature on the Spins.

Jim O

(in reply to OhD)

Post #: 28

RE: setting idle on electric model - 6/12/2007 3:40:19 AM

Derek.Koopowitz

Posts: 333
Joined: 2/27/2004
From: Benicia, CA, USA
Status: offline

Data logging is nice to have - reliability is even better, Jim. Stick with the regular Jeti's and stay away from the Spins until they can fix their problems.

(in reply to OhD)

Post #: 29

RE: setting idle on electric model - 7/12/2007 11:01:31 PM

rgreen24

Posts: 668
Joined: 1/22/2002
From: Omaha, NE, USA
Status: offline

Okay fellas, I have a got a new spinn after the last one stop running. This one will not idle below 780 for the life of it. I have tried everything from using end points to fixed to logorithmic to linear; nothing works. Do you guys running the spin have any thoughts?

TIA

(in reply to shannah)

Post #: 30

RE: setting idle on electric model - 7/12/2007 11:15:04 PM

rm

Posts: 237
Joined: 11/29/2002
From: ohio, OH, USA
Status: offline

You don't need to set an idle with electric.

(in reply to rgreen24)

Post #: 31

RE: setting idle on electric model - 7/14/2007 2:16:51 PM

woodie

Posts: 294
Joined: 6/10/2002
From: Placerville, CA, USA
Status: offline

quote:

ORIGINAL: OhD

quote:

ORIGINAL: OhD

I tried the logrithmic curve on the Spin 99/DualSky combination and at first thought it was worse as far as rough startup. However I can see if you start it aggressively it will always start in the right direction so it might work better for geared motors. Then I tried the exponential curve. It is the softest start of all but will start in the wrong direction some of the time. However it has by far the best idle and smoothness coming off of idle. I had it running at 200 rpm. Almost as good as my new ceiling fan. I don't know what that curve looks like so I guess I'll have to map it if I get a tachometer working.

Jim O

I tried to fly with the expo curve today and knew I was in trouble when it took 1/3 throttle to taxi out. The flight was terrible. It was like flying a two stroke with no mid range power. I might be able to compensate for it with the throttle curve in the transmitter but didn't try today. The idle was great and I only used 2694 mAh for the Master's sequence but it is not the way to go.
I went back to linear on the next flight and thought I heard a couple of cutouts during the flight. On the third flight I heard something on the bottom of the Figure M that sounded like something broke. I throttled back and landed okay but it looks like there is still something wrong with the Spin 99s. Is there any success stories with the Spin 75? I really like the data logging feature on the Spins.

Jim O

Jim,

I ran the Spin 75 for awhile but was having some of the same issues you describe with rough start up as well as the idle not being consistent. While I liked the data logging features, I found the volt and amp readings to be unreliable, rpm seemed fine. I did like the programmability features like acceleration, timing, etc. I played with timing from 20 to 30 degrees and funny thing, I ended up at 24 degrees as the setting I thought ran best all around. Guess what, 24 degrees seems to be the default setting on the Jeti Opto Advance 77 and 90 so in my case, the timing programmability didn't buy me anything but I still got to play with it ;-)

I also had a problem with the motor hesitating in the air as I did throttle ups for verticals. I thought I could hear it happening and the Eagle Tree Data Logger proved it was happening so I finally gave up and sent it back, traded it in for a Jeti 77 Opto Advance. I had an early version of the Spin and I would assume there were some programming, recording issues to be worked out. I kept the programming box since I assumed I would end up buying another Spin when the bugs were worked out and I liked some of the features in the box like pulse width and servo test so I kept it.

I also tried exponential for one flight and went back to linear. I use throttle curve on the transmitter programming to shape power response and am happy with that.

How's that Dualsky working out for you? Mine runs great and a couple other guys up here are trying them out. Jerry B is also runnng one now. Mine pulls about 65 amps on a 20x13 and I have all the vertical and speed I need for a 11 lb plane. Can fly the P07 sequence at under 3500 mah at 150 meters and large maneuvers.

Don

(in reply to OhD)

Post #: 32

RE: setting idle on electric model - 7/14/2007 4:32:04 PM

OhD

Posts: 410
Joined: 10/23/2002
From: west hills, CA, USA
Status: offline

Don,

I just wrote a long response and it was rejected by RCU. Must be a setting on my new computer. Let's see if this gets through.

Jim

(in reply to woodie)

Post #: 33

RE: setting idle on electric model - 7/14/2007 5:05:20 PM

OhD

Posts: 410
Joined: 10/23/2002
From: west hills, CA, USA
Status: offline

Here we go again. I was just thinking of starting a new thread on the Spin to see if anone is happy with them.
My original did not work well on the bench. Rough starting and many cutouts at all speeds. I sent it back and got a new one. The new one didn't seem to cutout but was still rough starting. I flew it in my Impact with a Hacker C50 for one flight. It was too hard on the gearbox during start up.
I then put it in my Abbra with the Dualsky and flew about 15 flights. It worked at first but didn't start and idle as well as I'd like and that is why I was fooling with the curve. The expo was neat on the ground but no good in the air. I went back to linear.
On flight 12 or so I thought I heard a cutout. This continued and then on the last flight I heard a noise that sounded like a rough restart. I landed and put in my Hacker Master 0-90.

The Master 0-90/Dualsky combo works great. Starts at 200 to 400 rpm and you can leave it there. I use from 3000 to 3500 mAh per flight on TP5300 Prolites. I'm running the 22x12 and having no heating problems.

I don't understand why they can't make the Spin work as well as the Master 0-90 and have all the added features.

A little shirter this time, Hope it goes through.

Jim

(in reply to woodie)

Post #: 34

RE: setting idle on electric model - 7/14/2007 9:04:01 PM

Scott Smith

Posts: 276
Joined: 10/29/2002
From: Agawam, MA, USA
Status: offline

quote:

ORIGINAL: OhD
I was just thinking of starting a new thread on the Spin to see if anone is happy with them.

140 flights and no issues with my Spin 99. Setting are:

Manual brake 12% initial, 68% final (prop just stops as plane is touching down.)
21 degrees timing (was running 25, plenty of power with 21 and a few less amps.)
1.0 sec acceleration
Slowdown cutoff
Initial point auto - on
End point 2.0 (output pulse measured at 1.93...Jeti says to be less than measured for high stick but full throttle was reached too early)
Auto inc end - off
Expo throttle curve (12Z transmitter, 3 point spline, point 2 at -17, +22 rate)

I fly with an idle up set for about 400 rpm (once motor is running...just flipping on idle up will not start the motor.) I went the idle up route because a few times early on, after an extended down line, it would make an awful noise on throttle up if I got into the throttle too quick.

Scott

(in reply to OhD)

Post #: 35

RE: setting idle on electric model - 7/14/2007 9:35:29 PM

woodie

Posts: 294
Joined: 6/10/2002
From: Placerville, CA, USA
Status: offline

quote:

ORIGINAL: Scott Smith

quote:

ORIGINAL: OhD
I was just thinking of starting a new thread on the Spin to see if anone is happy with them.

140 flights and no issues with my Spin 99. Setting are:

Manual brake 12% initial, 68% final (prop just stops as plane is touching down.)
21 degrees timing (was running 25, plenty of power with 21 and a few less amps.)
1.0 sec acceleration
Slowdown cutoff
Initial point auto - on
End point 2.0 (output pulse measured at 1.93...Jeti says to be less than measured for high stick but full throttle was reached too early)
Auto inc end - off
Expo throttle curve (12Z transmitter, 3 point spline, point 2 at -17, +22 rate)

I fly with an idle up set for about 400 rpm (once motor is running...just flipping on idle up will not start the motor.) I went the idle up route because a few times early on, after an extended down line, it would make an awful noise on throttle up if I got into the throttle too quick.

Scott

Scott, glad to hear you are having good luck with your Spin. I will probably get another when the 'normal or usual' feedback on them is positive. I was an early buyer and I suspect some of my issues have been resolved at this time.

Have you checked M, Amp and Volt data recordings against a known source? My logged RPM data was ok, but Volts and Amps weren't even close.

Don

(in reply to Scott Smith)

Post #: 36

RE: setting idle on electric model - 7/14/2007 10:02:49 PM

OhD

Posts: 410
Joined: 10/23/2002
From: west hills, CA, USA
Status: offline

quote:

ORIGINAL: Scott Smith

quote:

ORIGINAL: OhD
I was just thinking of starting a new thread on the Spin to see if anone is happy with them.

140 flights and no issues with my Spin 99. Setting are:

Manual brake 12% initial, 68% final (prop just stops as plane is touching down.)
21 degrees timing (was running 25, plenty of power with 21 and a few less amps.)
1.0 sec acceleration
Slowdown cutoff
Initial point auto - on
End point 2.0 (output pulse measured at 1.93...Jeti says to be less than measured for high stick but full throttle was reached too early)
Auto inc end - off
Expo throttle curve (12Z transmitter, 3 point spline, point 2 at -17, +22 rate)

I fly with an idle up set for about 400 rpm (once motor is running...just flipping on idle up will not start the motor.) I went the idle up route because a few times early on, after an extended down line, it would make an awful noise on throttle up if I got into the throttle too quick.

Scott

Thanks for the feedback Scott. I will try the 21 degree timing and a longer acceleraion settings. The noise I heard was probably the same as yours as I was at the bottom of a fig. M getting back on throttle. I thought something broke.

Jim O

(in reply to Scott Smith)

Post #: 37

RE: setting idle on electric model - 7/14/2007 10:34:03 PM

Scott Smith

Posts: 276
Joined: 10/29/2002
From: Agawam, MA, USA
Status: offline

quote:

ORIGINAL: woodie
Have you checked M, Amp and Volt data recordings against a known source? My logged RPM data was ok, but Volts and Amps weren't even close.

I picked up this controller last September so I imagine it's one of the earlier ones as well. I found the logging to be of little use since it's a min or max value. Temp and max RPM are good to know, but V and A aren't that useful (or accurate as you say.) Errors are good to know and fortunately I haven't recorded any yet! Besides, you just can't beat EagleTree! Here are two recent flights, first was TP5000-10SX, second was TP3850-10LSX, A60-20S, 17x12E, master's sequence.

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(in reply to woodie)

Post #: 38

RE: setting idle on electric model - 7/15/2007 2:33:28 PM

LCHelilover

Posts: 130
Joined: 5/17/2003
From: Lake Charles, LA, USA
Status: offline