that depends on the individual hardware. You want it to be a level that causes the motors to reliably spin, but not so fast that it would hurt someone if their hand got in the way. I usually adjust it up and down until Iām happy with it based on that criteria.
Ok, thanks guys, Iāll change my setting from 0 to a slow spin when armed.
When I built this QuadPlane, I used the HK 3.5mm bullet connectors so it was an easy change from X-frame to H-frame buy swapping one of the connectors 180 degrees to swap the two outer wires. The props were then changed front-to-back and back-to-front. I then changed the Q_FRAME_TYPE from 1 to 3.
I didnāt have much time to test yesterday but in QSTABILIZE I could bring the tail up and move the plane properly forward, backward, left, and right with the transmitter stick. As soon as I lifted the gear mains off the ground, the plane would spin clockwise (when viewed from above) about 90 degrees per second. Iām not sure if I need to change PIDs or reverse the rudder control on APM.
That usually means Q_FRAME_TYPE is wrong. It is exactly the effect you get when you try to fly X as H or H as X
Double check your settings, and try using motortest to check the direction of each motor
Tridge,
Thanks for the suggestions. Iāll give it another look soonā¦
I found the issue was that my front right boom had broken again after landing in the tall bushes. It was originally broken on my first crash a few videos ago. The Q_FRAME_TYPE is 3 (still v3.6.0) and motor test worked perfectly using 7% throttle. The Ranger EX hovers perfectly as an H-frame in my backyard.
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Thatās awesome Greg. Any videos yet on forward flight attempts?
I may get to test it on Sunday as the weather seems reasonable. I wonāt go back to the tall bush area as the rain this summer has created monster weeds!
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Awesome! Good luck this round. Iām confident youāll have a successful flight this round.
Congratulations 
Sometimes the dumbest thing in front of our eyes drives us crazy.
This is where experience and good work are noted.
Now version 3.8.0 is just coming out of the oven 
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Today the larger fields were busy so I could only test QSTABILZE mode at a smaller school field. The hover testing worked fine with my new H-frame setup but there was an issue with MANUAL mode. The video shows two of the quad rotors turning in MANUAL mode that also increased with throttle.
Since I wonāt be able to test again until Labor Day Weekend (2 weeks), my plan is to upgrade from v3.6.0 to the newly released v3.8.0 by first loading Rover firmware so I get a clean parameter list. I will then manually enter my critical parameters from v3.6.0 by hand using Mission Planner and post the file here for review. I will also re-test MANUAL mode to see if the quad rotor issue was resolved. Comments welcomeā¦
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Hi Greg
Just a note about resetting the parameters. I previously always reset the parameters as you commented butā¦ One day configuring the mutirotor, I loaded the arduplane version to later put the arducopter version again andā¦ disasterā¦ First, never set up with the propellers onā¦ It took off with such bad luck that it was towards me, hitting me. A little pain and a broken carbon fiber propeller. I was lucky 
I comment on the forum and the teachers that we have here told me the correct way to reset the parameters without doing anything weird. 
Now looking exactly as it is done I found that they have already posted it on the wiki, Thank you so much guys
It is much safer and out of trouble 
Hi,
Thanks for the tip! Iāll try the parameter reset feature.
I got some work done on my Ranger EX upgrade to v3.8.0. As a test, I first just loaded the firmware and saw that without doing the Parameter Reset, I still had the anomaly of quad rotors turning in Manual mode. I then did a full parameter reset from the Mission Planner v1.3.49 button on the Full Parameter List and started recallibrating accs, compass, etc.
I used the Migration from Plane 3.7 to 3.8 page for setup help and did things similar to my other mini Talon QuadPlane project like on-board compass calibration.
I got the Ranger to Arm in Manual mode (love the new arm/disarm with rudder feature) and now only the forward flight motor is used with throttle. In QStabilize mode, the quad rotors were shaky so they did not like the PID settings. I thought I changed them all to my v3.6.0 setup but I may have missed some. Iāll re-check the PIDs and get it hovering properly next. I attached my current .param file below.
RangerEXwithV380QP.param (16.0 KB)
can you post a DF log showing that effect?
My first guess is that ESC calibration isnāt quite the same between motors, but that doesnāt explain why the RPM goes up with throttle. Puzzling!
please get a log of the above effect first.
Also, a simpler way to reset parameters if you want to is to set FORMAT_VERSION to 0 then reboot.
hmm, one more idea that could explain it. If you have some poor ground connections to the ESCs then it could be ground lift when the forward motor runs causing the ESCs to see bad values. Iād normally use something like a Saleae logic pro with an analog capture to analyse that sort of problem.
First step is a log though, to see if its commanded. I suspect weāll find it isnāt commanded, and its a electrical issue (eg. ground lift)
Tridge,
Thanks for the FORMAT_VERSION suggestion. The āReset to Default Paramsā in Mission Planner v1.3.49 seemed to work as well. On my initial hover test using v3.8.0, I was too hasty and didnāt let it get off the ground. A re-test today proved that I am hovering just fine so I am ready to test forward flight next weekend.
The odd hover motor issue appeared after switching from v.3.6.0 to v3.8.0 and back to v3.6.0 without clearing parameters. I donāt see the issue anymore using v3.8.0 after clearing the parameters to default. I can retrieve the log when I get my next test completed on our Labor Day weekend.
Hello Greg,
I finally convinced myself to fly since the temperatures went down to the mid 80s but humidity was way up there. This flight shows somewhat the same twisting you showed in Post #33 albeit without the wild pitch up but rather a pitch down as it was still stalled as the quad motors ramped down. Iām definitely going to add the guy wires as you did on yours but at different attach points. I know Iām running PX4 but Iām hoping the experiences encountered will help point you to the right direction on getting yours squared away. Good luck.
Hi rollys,
Thanks for the video, I felt like I was sitting on top of my Ranger! 
Your twisting didnāt look too bad and it flew fine. Mine has seen several upgrades since I last posted on RCG. I have installed newer v3.8.0 firmware with a complete parameter reset since I had very odd results in MANUAL mode after going to v.3.8 and back to v3.6 without a parameter reset. It seems fine now and ready to retest once I upgrade my forward flight motor.
Read my Ranger thread here in the Plane v3.8.0 forum for motor upgrade details. My last testing with a normal wing set showed that I was using 70% throttle with the stock setup on 4s. I will install my new motor and ESC before testing transitions.
What is your throttle set at when cruising around in forward flight? Are you still using a 4s Lipo with the stock motor/ESC ?
Cheers!
Iām using the stock Volantex 3715 - 1000kV motor that came with the ARF turning an APC 1055MR prop. In April, when the temp was about 85 deg F and humidity about 75% in Stabilize mode, 62% throttle yielded 38 mph, which is my target cruise speed. In any other flight mode, throttle is controlled by FC so during turns, I would see it push up to 70% to maintain airspeed and altitude and back to between 60%-65%.
In this recent flight, I pointed out in the YouTube Description, it was very humid, probably in the low to mid 90s percent. In Altitude and Position flight mode, I saw the throttle being pushed as much as 85%, especially during turns, to maintain 38 mph airspeed.
Cruise throttle is not set by percentage but rather by TRIM airspeed; which I have set for 38 mph. So, as long as Iām not in Stabilize mode, I leave my Tx throttle at 50% and the FC will adjust it on the ESC to whatever it needs to maintain the TRIM or cruise airspeed.
Yes, Iām still using 4S 10000 mAh pack.Iāll be interested to follow your motor upgrade. For now, Iām going to stick with my current setup. I havenāt even attempted to push it close to its duration limitā¦ my bladder gives up first! LOL.
I donāt understand much about bladdersā¦ 
Iām not asking you for details of yours eitherā¦ 
how much time are you taking from him? Remaining battery? You block the engines, right?