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05-07-2011, 10:48 PM | #41 (permalink) |
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Sorry for going off topic i wanted to explain about the AVCS.Damp setting in the Ail/Ele expert menu and its correlation to servo resolution. The more resolution you have the higher AVCS.damp rate you can run without it affecting your control feel. The higher the AVCS.dmp you have set the more stable your heli will feel.
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05-08-2011, 04:29 AM | #42 (permalink) |
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Sorry, I mean't that the thread I referenced was, I believe, intended to be the settings/effects thread Mercuriell proposed, but didn't quite turn out that way! Follow the links and you'll see what I mean!!!!
I'd quoted his post, so I thought the context of mine was clear. Your post in this thread was a goodun! Steve
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05-08-2011, 10:31 PM | #43 (permalink) |
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Rate Constant
after doing some reading and some flying this weekend i think i might understand what the rate.cst setting does in the ail/ele expert menu. From what i can tell this looks to be similar to the vbar's paddle simulation setting. If i am correct the lower the value the less paddle like it will act in rolls keeping the rate constant while increasing it will allow the roll to speed up simulating a paddle.
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05-10-2011, 09:37 AM | #44 (permalink) |
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I'd like to know more about this setting as well the way I understand it in the manual is it helps to get same rotation rate between hovering and FF.
I got one flight today to try to get the heli quicker on cyclic. I'm using flight mode 4, 10° cyclic and angbase 110%. The heli is blazing fast on aileron in FFF (very quick rolls), but is a dog in stationary flips and rolls. Unfortunately I haven't had a chance to try tinkering with that. Someone has the same problem and tried this?
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Ben Goblin 500 IKON w/ gov, Quantum 4115-1200, Hitec 5245, BLS251 DX8, RF6 Last edited by HeliBenj; 05-23-2011 at 04:36 PM.. |
05-23-2011, 03:51 PM | #45 (permalink) |
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Ang.Rate -- Swash AFR's
The Ang.Rate function sets the maximum deg/s during acceleration and the Swash AFR's determine the continuous cyclic rate. Keep in mind the deg/s readings on the display will include the much faster transitions as well. I recommend ignoring the deg/s readings and going for what you like. If the feel and transitions (tic tocks) are too fast for you then Ang.Rate should be decreased (or use a lower flight mode which does this for you). If the model doesn't flip fast enough then increase the CGY750->Swash->Cyclic->AFR's. The cyclic pitch change should be between +/-8 to +/-10.5 degrees. The flight modes don't change the overall cyclic rates, it only changes the "feel". The amount of cyclic pitch needed will vary depending on heli size, head speed, blade size and brand used, that is the main reason for starting at +/-8 degrees. Slowly raise it up by 0.5 degrees per flight until you are satisfied with the overall continuous cyclic rate (for both axis, don't worry about mismatched #'s as the fore/aft cyclic is always going to be higher ). If you get up to +/-10.5 degrees and you still want the model to flip faster then you need to consider trying different blades (thicker airfoil, wider cord) or a higher head speed. More than 10.5 won't really speed up the continuous cyclic rate as it causes too much drag, dirty air, bogging, etc. Rate CST When performing stationary rolls or flips (in the calm winds) the overall rate will be slower than when performing fast forward flight rolls or flips, Rate CST is used to try and balance this difference out. Higher values slow the fast forward flight maneuvers rate down. |
05-23-2011, 05:14 PM | #46 (permalink) |
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Thanks, That's very helpul. Yes I find it odd here's such a difference between stationary and FFF rolls speed. I have increase CstRate to 100% and did not see a radical effect, will have to try out some more.
I'm running 10.5 cyclic and flips were still on the edge of slow with Radix 690 and edge 693. As you said changing blades made a huge difference, for me using the rotortech 710 quickened the flips and rolls a LOT as well as way more speed in FFF; as a paradox I lost in autorotation. I think the RT as lighter than shorter Radix or Edge but overall they made the heli ballistic. I have to up the cstrate some more to try but overall the heli has a great feel at the moment
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05-24-2011, 01:46 PM | #47 (permalink) | |
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Quote:
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05-24-2011, 04:11 PM | #48 (permalink) |
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Sounds reasonable to me. I need to get to tweekin' on my Ang.Rate; the more I play with the performance parameters, the more I like my CGY750.
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05-25-2011, 11:42 AM | #49 (permalink) |
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If you are interested in changing the overall feel I'd recommend leaving ANG.Rate alone and use the various flight modes. The flight modes automatically adjust the start and stop delays along with the ang.rate, rate.cst and a few other parameters. Flight mode 1 is the softest feel and 5 is the quickest.
Save yourself some headaches, Futaba did a very good job setting the flight modes up and it provides a nice progressive difference in feel between 1 and 5. Once you find the feel you like then use the swash AFR's to set the continuous cyclic rate. |
06-18-2011, 11:37 AM | #50 (permalink) |
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Any new tweaks for the expert settings? how about the new settings with the update??
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06-18-2011, 11:51 AM | #51 (permalink) |
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It's hard to know if other little tweaks accompanied the piro compensation. I've not played around at all with the AIL/ELE expert settings as I've been rather impressed. Next time out I think I may go from flight mode 3 to 4 to see how I like a change of setup. I may start tweaking from there.
Recording the impact of changes is a real challenge. I know this from playing around with the governor. That's something I'm sure has been massaged a little in the update; either that or something that impacts it. I found there was a little hunting in Quick mode after the update, so I dropped down to Middle and then found I could wind up the gain on the tail a little. Steve
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06-20-2011, 10:48 AM | #52 (permalink) |
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Does anyone know what i need to do to edit my original post on this sticky. I have some updates that i wanted to add to the first page of this thread for expert settings and there effects so that everything is in one place instead of scattered?
Anyhow I've done lots of playing with my CGY750 and i believe i have it set now just right but more important i think i know what to change when finally
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06-20-2011, 12:59 PM | #53 (permalink) |
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You should see an Edit button to the left of the row of buttons at the bottom of your post.
Steve
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06-21-2011, 11:11 AM | #54 (permalink) |
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I probably should of mentioned that once the thread became sticky...the edit button disappeared. If someone could let me know a way to edit it again or give me constant edit permissions then i will try to keep the main page up to date.
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06-22-2011, 06:13 AM | #55 (permalink) | |
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Quote:
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06-22-2011, 06:33 AM | #56 (permalink) |
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+1, maybe in the meantime you could write your findings here and copy them later on if you have a mean to edit your first post?
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06-22-2011, 12:18 PM | #57 (permalink) | ||||
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good idea i will just add it here and if someone gets the chance please edit the first page with this data.
Control Feeling Default is 5 range was 1 to 10. Manual says increasing the value will allow for consistent control feel while lowering would be more dynamic. . Basically this is very similar to the BeastX's v2.0 middle pot they call it Swashplate: direct cyclic feed forward and describe it : Quote:
************************************************** ************************************************** **************************** Control Delay In and Out Default was set to 7 for Ail and 10 for Elev for both In and Out. One thing i noticed when looking at the chart in the back of the CGY750 explaining the differences between flight modes was the big changes in this value. Increasing the number results in a softer feel and decreasing will give more aggressive feel. Closest thing this reminded me of was a cross between stick deadband setting on the vbar and BeastX and expo except that it allows for a much wider range to adjust within. When i decreased my Elev from 10 to 8 for IN/OUT, my elev became more responsive around center stick. The same is true for the Ail. One reason i chose FM 3 over FM 4 was the fact that the stick felt much more sensitive than i liked. This setting would basically allow me to tweak that to my liking. I think this setting will really make a difference for alot of people and is worth experimenting with. I'm confident that other people who are between flight modes would benefit from playing with this. For instance I found that like on my X5 the cyclic roll speed etc of Flight Mode 2 but the stick feeling between FM3. What i did was change my Aile Delay In/out from 12 to 9 and set my elevator in/out 10. Makes a world of difference. I suggest everyone adjust their values at least once to see what they like. ************************************************** ************************************************** *************************** Very important whenever making a change to your Control Delay In and Out values, be sure that you adjust it for both sides of the stick....A/B , this is true for Ail/Ele/Rud. To do so simply move the stick you are adjusting in 1 direction for when in the Control Delay menu, then the other direction so that you change both A/B parameters else it will be faster/slower in 1 direction ************************************************** ************************************************** **************************** AVCS damping This is set to 98% by default. This setting will effect how stable your heli feels during hover and overal. The higher the value the more stable it will be, the better it will stabilize in windy conditions etc. As you raise this value your control feel will degrade though. The higher resolution, the higher the AVCS Dmp value can go without it degrading control. The more resolution the higher the cyclic gains can be run. I think this value is one of the most important values along with the Igain in getting a solid flying heli. At 98% my X5 would fly nicely in calm conditions but the slightest bit of wind would knock my heli around like a feather. Setting it to 99 increased its stability greatly and at 100% increased it to the point that i could let go of the sticks in the wind . The problem is if you dont have optimal resolution it will feel inaccurate on control feel will be compromised. The key here is to achieve optimal resolution to allow for a higher AVCS.dmp value without it affecting your control feeling or accuracy. To compare The Vbar has a cyclic setup screen which uses a slider of a value of 0 to 100. They have you measure exactly 8 degrees of aileron cyclic...moving the slider up will give you more throw and down less. Optimal resolution on the Vbar is a value between 80 to 100% on the slider with exactly 8 degrees of cyclic. The lower the slider value the less resolution you have. The same is true with CGY750 except optimal resolution is determined by AFR% in your Swash menu. The sweet spot for Ailerion AFR is to achieve 8 degrees of cyclic throw between 50% to 60% AFR, Elevator above 50% normally 60% + If you are getting 8 degrees with AFR % in the 40's then you should adjust your setup so your AFR is at least 50% or greater. My experience : Increasing resolution made an extreme difference on both of FBL X5's (Vbar & CGY750) when I increased my cyclic resolution using different (shorter) swash balls. Both were identically setup with my Vbar originally being at 75% on slider and 8degrees of Ail throw to 90% & 8degrees compared to CGY750 which was at 47% and went to Ailerion 52% AFR @ 8degrees Elevator AFR also went up from 54 to 60% AFR. The biggest difference was that I was able to increase my AVCS.Dmp from 98% to 100% which increased the stability of my heli without compromising on my control feel/accuracy. ************************************************** ************************************************** ***************************** ANG.Rate. this setting adjusts the roll speed or flip speed and is set to 100% at default. If you are finding that your rates are too fast then you can slow them down here a bit. I experimented by lowering the value a bit and returning back and could see a immediate differences in my rates. Quote:
Rate.CST - Rate Constant According to Futaba's Davinci code or as we know it the CGY750 manual Rate.constant selects the consitency of the (Ail/Ele) rate between stationary or straight flight differences Lucky for us Brian (bbremer) came along and explained to us finally how to actually use it. Quote:
************************************************** ************************************************** ****************************** Igain Quote:
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06-22-2011, 12:56 PM | #58 (permalink) |
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Thanks a lot for that, extremely valuable info!
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06-22-2011, 02:44 PM | #59 (permalink) |
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Joe1I;
Thanks for your infos
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06-22-2011, 03:24 PM | #60 (permalink) |
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joe1l,
Please send me your mailing address, as I owe you a gift card to your favorite fancy restaurant for taking the immenase amount of time to not only write all of this up, but doing the testing to get this info for us. MAJOR thanks friend! Steve |
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