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Skookum Robotics Skookum Robotics SK-360 SK-540 & SK-720 Digital Flybar |
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01-12-2013, 11:24 AM | #41 (permalink) |
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Join Date: Sep 2010
Location: Central Illinois, USA
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I just got my E620 tuned in this morning. SK540, Futaba servos, an ICE2 120HV and the latest firmware on everything. Started with 50 but that was too high. 40 was also too high. 35 was smooth. I finally settled on a governor gain of 37 with the tail start and stop gains set to 27 and 32.
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01-12-2013, 04:54 PM | #42 (permalink) | |
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Join Date: Sep 2008
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Quote:
Holding the rpm and all.
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02-18-2013, 08:32 AM | #43 (permalink) |
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Thread Starter
Join Date: Dec 2010
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Have just updated my SK540 to 3.30. Tail shutter still there - maybe a 5% improvement.
All flight modes are exactly the same rpm as per sk540 settings. On normal mode 2100 rpm, tail shutter are not very noticeable, but IU1 - 2250, IU2 - 2400 there are still a major tail shutter. Maybe the next firware will have a fix. Still on 112/11 (30.55 gear ratio) and ordered a 12 pinion to c if there`s a difference. Governor gain of 33 keeps head speed 100% steady - below 23 gain, tail shutter are gone, but gov useless. Have tried a friend`s cc esc - everything 100%, but the hobbywing does not want to play along. What a bummer |
02-18-2013, 03:29 PM | #44 (permalink) |
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Join Date: Apr 2010
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Re: Governor gain / tail wag
Going up a tooth didn't help form me! The yge 120 hv is spot on and the yep 80 hv seems to be perfect too! Hobbywings are now shelved!
Sent from my GT-P3110 using Tapatalk HD
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6hv (fb) 7hv DX8 |
02-18-2013, 06:14 PM | #45 (permalink) |
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Same symptoms here
I'm having the same issue as the OP, fast oscillation that is proportional to both governor gain and head speed. You can both hear the oscillation and see it as a very fast but small amplitude tail wag.
Setup includes: Trex 500, 500MX on 14T pinion (one up from stock), ICE 75 w/ v4.02, hobbywing sensor, SK-540 My series of events:
Help Skookum! When I look at my Caste ESC logs i can see the rpm and throttle input data. Both are wavering (noisy) a lot with the SK gov on and even bogs around 75 rpm on a simple flip. I'm convinced the SK governor is the cause here simply because there was no wag symptoms both before and after the governor, and they appeared immediately upon turning the governor on.
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* Goblin 700C, iKON, Torq 9180/9188, Quantum 4530-500, Edge HV160, Cyclone 695 * Outrage Fusion 50, SK-540, Torq 9180/9188, Quantum 4135-530, Edge HV80, SAB 630 Blk 3D * Align T-Rex 500E DFC, SK-540, ICE 75 * Futaba 14SG |
02-19-2013, 12:53 AM | #46 (permalink) | |
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Join Date: Dec 2010
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Quote:
I contacted skookum again and asked them if 3.30 will fix my problem - This was their awnser: Hi Jaco, They may be. I found and fixed several bugs in the governor, and more improvements will be out in a week. I wasn't able to replicate that problem, so I can't be sure it is fixed. We are flying a hobbywing esc now though So it seems that we have faulty hobbywing esc`s, because skookum are flying hobbywings without any issues. |
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02-19-2013, 04:35 AM | #47 (permalink) |
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Join Date: Apr 2010
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Well the yep isnt too exp so its worth a try. I have 2 hw 70a hv and 2 hw 120a hv on 2 6hvs and 1 7hv. They all have this issue for me but the yep/ygp esc seems to be solid. This hobby is always like this. Cross your fingers!
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6hv (fb) 7hv DX8 |
02-20-2013, 08:28 AM | #48 (permalink) | |
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Quote:
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* Goblin 700C, iKON, Torq 9180/9188, Quantum 4530-500, Edge HV160, Cyclone 695 * Outrage Fusion 50, SK-540, Torq 9180/9188, Quantum 4135-530, Edge HV80, SAB 630 Blk 3D * Align T-Rex 500E DFC, SK-540, ICE 75 * Futaba 14SG |
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02-20-2013, 06:03 PM | #49 (permalink) |
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If you haven't tried it already, going up 1 tooth on your pinion may help. More info in post #40.
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02-21-2013, 02:00 PM | #50 (permalink) | |
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Quote:
Alternatively, to achieve the same effect for testing one could just lower the desired head speeds without changing pinion. I've already shown that I have less chatter at my lower normal speed and the most chatter at the highest head speed in IU2. (2300/2450/2650 in a 500 size bird) I suppose one could rationalize a bigger pinion as some sort of mechanical dampening - less acceleration available so harder for the motor to bounce around speeds; however at a cost of harder demand placed on the ESC and less efficiency.
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* Goblin 700C, iKON, Torq 9180/9188, Quantum 4530-500, Edge HV160, Cyclone 695 * Outrage Fusion 50, SK-540, Torq 9180/9188, Quantum 4135-530, Edge HV80, SAB 630 Blk 3D * Align T-Rex 500E DFC, SK-540, ICE 75 * Futaba 14SG |
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03-02-2013, 10:20 AM | #51 (permalink) |
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Thread Starter
Join Date: Dec 2010
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Good day all
Just upgraded my SK540 to 3.31 and did a small test flight above my house - just some tic-toc`s, pitch pumps, flips/rolls and it seems like my tail shutter are gone. I left my gov gain at 32 and the head speed seems stable with all of the above moves, without a tail shutter - Hopefully the governor will stay like this when I go to our local flying field tomorrow. My IU2 are currently at 2350 and I will increase it to 2450-2500 when my 12 pinion arrive. Don`t want to say thanks Skookum before I do some more flights. |
03-02-2013, 12:49 PM | #52 (permalink) | |
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Join Date: Jan 2012
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Quote:
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03-04-2013, 12:07 AM | #53 (permalink) |
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Join Date: Dec 2010
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Okay did 6 flights yesterday and it seems like my governor tail shutter are 95% less with 3.31. Sometimes when I get out of hard moves into a hover I can still see and hear the tail shutter, but it`s 95% less. Previously I had to go down to 23 on gov gain which gave me no gov response, but also no tail shutter. Now at 32% gain on gov and gov works great except the the tiny tail shutter now and then.
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03-05-2013, 04:43 PM | #54 (permalink) |
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I just tested 3.31 For me the tail shutter is just a little less
I posted more detail in the new 3.31 thread that Art started https://www.helifreak.com/showthread...87#post4794287
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* Goblin 700C, iKON, Torq 9180/9188, Quantum 4530-500, Edge HV160, Cyclone 695 * Outrage Fusion 50, SK-540, Torq 9180/9188, Quantum 4135-530, Edge HV80, SAB 630 Blk 3D * Align T-Rex 500E DFC, SK-540, ICE 75 * Futaba 14SG |
03-06-2013, 12:22 AM | #55 (permalink) |
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Thread Starter
Join Date: Dec 2010
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Okay, but it seems that Skookum are on the right track of fixing this issue. I still don`t like my tail shutter at the moment, but hopefully it will get fixed completely soon.
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03-24-2013, 02:05 AM | #56 (permalink) |
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Join Date: Nov 2011
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Any news on this issue?
Have a T-rex 550 with HW100 Platinum and the HW sensor and the Skookum 720. I'm currently at 18 gain on the governor and that is too low for it to keep the rpm. Anything above and I get pretty bad oscillations. Had the original Align ESC earlier and that was fine with 28 gain. |
03-24-2013, 05:31 AM | #57 (permalink) |
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Join Date: Nov 2011
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Any news on this issue?
Have a T-rex 550 with HW100 Platinum and the HW sensor and the Skookum 720. I'm currently at 18 gain on the governor and that is too low for it to keep the rpm. Anything above and I get pretty bad oscillations. Had the original Align ESC earlier and that was fine with 28 gain. |
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