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

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

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.

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

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

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

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

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

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

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

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.

I'm running the Spin 99 with AXI 5330 FAI and TP 5300's. I didn't like the 1second throttle and back that down to .3 sec. Linear throttle. I've played with timing and can't tell a huge difference...I'm between 23 and 25 degrees (24 default). I'm flying a DX7 so throttle curve isn't available. I just initialize the ESC with the throttle trim pulled back about 15 clicks, then click the trim up to near neutral. If you click it up far enough to actually start the motor, it will be a little too fast for "idle". but there is a range where the motor will continue to run once started by stick movenment just before it starts from trim movement where it idles well.

The only issue that I've had with the ESC is the "horrible noise after extended downline" that someone else mentioned. I'm guessing that it has something to do with the windmilling prop being driven faster than the esc can keep up with, but I'd sure like one of you smart guys to tell me what it is and how to fix it. I haven't used the brake, and perhaps that would prevent overspeeding.....?

Hello again folks,
I put the Spin back in my Abbra with the Dualsky 6360 and have flown 11 more flights. I've had no cutouts or big noises in the air. I've tried timing from 21 to 24 degrees and acceleration from .5 to 2.0 seconds. The big problem is starting especially the first start of the day. It wants to run backwards. I try bringing the idle trim up slowly and bringing the stick up fast. Neither works. The best compromise is to set the idle trim where I know it will idle after it starts properly, and then start it with the stick. Sometimes it still wants to start backwards and it won't stop by bringing the stick back but only when the trim is also pulled back.
I could defiinately feel the lag in acceleration with it set in the 1.5 to 2.0 second range. The change in timing was not significant as far as I could see but the low timing and slow acceleration seemed to conserve energy. I used less than 3000 mAh on all flights that consisted of just the masters program. With many extra maneuvers I was still under 3500.
I guess one could get used to it but after seeing how great the Jeti/Hacker Master 90-0 works I'm not completely satisfied. I failed to mention that I've had the brake turned off through all of this. I guess I should try it to see if it affects the starting.

Jim
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Jim, you experience sounds very similar to mine. I had a Spin 75 but the behaviour was very much the same. I experienced surging on full throttle uplines which was mostly alleviated by programming in an acceleration delay on the controller. I also had trouble getting a smooth start and consistent idle.

Hope Jeti gets these issues ironed out, I like the programmability of the Spins but went back to the standard Jeti for consistency. Right now on my Jeti 77 Advanced, I just flip throttle kill off on my TX and it motor is idling smoothly at a very low rpm with out any hesitation, jerks, etc.

Don

BTW if any have problems setting very low idle on Acro 90 Jeti and Hacker C50 Comp configuration, try this. Switch two wires in the motor-ESC connection and turn rotation to the other side (rotation left in all cases I have checked). My both planes have a very smooth idle (500 RPMs) without stopping due to some hit shake noise, and have left rotation setting. Before I figured this out I have one of them with right rotation and cannot have an idle lower than 900 RPMs since it stopped and sound like something broke as it stopped. I hope this helps.