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General RC Heli Discussion Discuss general topics on rotary wing aircraft, including construction, Servo's, Gryo's and Stabilizer discussions.
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Topic Review (Newest First)
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| 11-09-2011 11:38 AM | ||
| Tower |
Cracked Canopy - an update of possible Interest Curiosity got the better of me and I took the 500 and had it examined by a senior mechanical engineer at a large national engineering firm. His quick assessment of the cracking problem is in two parts - one surprised me; 1) Spreading the canopy to get it over the posts, with so little flexibility in the gel coat surface is an obvious issue - no surprise there. 2) The post should be perpendicular to the surface into which they are placed if both the receiving hole and the post are round. If they are contacting at something other than 90 degrees then their shape needs to change or the angle of the receiver (canopy), or the post, needs to be altered. In this case an attempt to alter the angle of the receiver is being made using the grommet. This works in the rearward holes of the canopy as the angles are not that high. In the forward holes the angle is higher which is generating stress on the captured component (canopy). He suggested trying a grommet with a round profile (ball shaped) in an effort to relieve the stress or better still change the angle of the front post - not so easy. For what it’s worth. Cheers |
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| 11-06-2011 02:00 AM | ||
| 4wdmt |
Re: Trex 500EFL Pro Build (flybarless) Yup. Dialling the Elev pot fix the bobbing. It was there when I started with 100% flat TC. Crazy headspeed! My flight time was just below 4:30 with the 3000mah. Now, I am running at 88% flat and still no bobbing. |
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| 11-06-2011 01:36 AM | ||
| Tower |
Re: Trex 500EFL Pro Build (flybarless) Quote:
Interesting Did this fix the bobbing, and why wouldn't you attribute that to head speed? Cheers |
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| 11-06-2011 01:18 AM | ||
| Tower |
Re: Trex 500EFL Pro Build (flybarless) Quote:
2 am , can't sleep, and read this thread from start to finish - they are a bit of a build journal for me and useful from a forensic perspective. I find it helpful to reread others comments from a fresh vantage point. Yours made excellent sense and is a really good should-have-checked-that observation. In retrospect I think the selection of an intermediate setting for the 3GX unit left me with a sense of the model becoming some how more intelligent and taking care of itself. Interesting - not sure what I learned from that other than to reinforce the check everything and then slow down a check it again mantra. Thanks again Jeremy |
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| 11-04-2011 06:29 PM | ||
| 4wdmt |
Re: Trex 500EFL Pro Build (flybarless) Jeremy. I checked my 3GX parameter settings and this are the only things I changed with the normal pre-sets: IN Ail and Elev parameters...all same settings except the Expo Level Setting which from 1, I changed to 0 since I am using expo from my futaba radio. IN Rudder parameters... Rudder Control Rate from 60 to 70 Rudder Total Gain Adj. from 70 to 55 Rudder Lock Gain Adj. from 70 to 58 Rudder Stop Gain Adj. is still 70 Piroutte Compensate is still 50 Rudder Speed-Up Adj. from 0 to 10 Anti-Tourque Comp. is still 0 IN Other Parameters: Hiller Mix Rate...from 50 to 70 Bell Mix Rate...from 70 to 50 Swashplate Norm. Speed...from 60 to 65 Cyclic Pitch Comp is the same - 50 Piroutte Opt. Adj. is still the same - 50 IN the 3GX unit itself. I have the Elevator dial down a few notches to the left since I am getting some slight bobbing. |
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| 11-03-2011 10:54 PM | ||
| 4wdmt |
Re: Trex 500EFL Pro Build (flybarless) I am at work right now. I'll post my 3GX parameters tomorrow. But it is pretty much in the normal setting with some customs changes. I have my head set-up for +/-11 pitch and for cyclic: 8 degrees. Gyro gain is 39 (Futaba). I got a bit of mild wag from the very start without chaging some settings before in the 3GX Rudder Parameter. So I have to dial it down to 28 before. My set-up is mostly for basic flying. |
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| 11-03-2011 07:40 PM | ||
| Tower |
Re: Trex 500EFL Pro Build (flybarless) Quote:
How have you set it up? I am curious what your head settings are for elevator/aileron blade pitch and your gyro gains? Cheers |
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| 11-03-2011 08:53 AM | ||
| 4wdmt |
Re: Trex 500EFL Pro Build (flybarless) Glad to see that you were able to fly this new 500efl without any more issues Jeremy. I went through about 10 packs already and is really a nice bird to fly. I am now in process of just getting the right tail feel to my liking. Changing some parameters through the 3GX interface. Happy flying! |
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| 11-03-2011 07:44 AM | ||
| al_voisine |
Re: Trex 500EFL Pro Build (flybarless) Enjoyed your posts, thank you! |
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| 11-02-2011 07:11 PM | ||
| airman |
Re: Trex 500EFL Pro Build (flybarless) the heli gods are looking over you ! great save tower . |
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