Originally posted by pilot dave
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Official Freewing 64mm EDF A-10 Thunderbolt II V2 Twin Jet Thread
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I wished I could tell you more about this jet other than it looks great. That's all because it never got off the ground using a 4s battery!!
I was on a grass(well manicured) and did not have enough power to get off the ground!!
Even moved the pushrod on the elevator and servo for more throw and still not enough power!
Waited to long to call support so I'm stuck with a nice looking wall hanger!!
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IMO, it was the grass. Many EDFs, even 6s ones (eg. Freewing B2 with grass ops gear) won't get off my grass runway. Mine won't get off a well manicured grass runway. It just drives along the ground till it runs out of runway. Only on a smooth prepared runway will it get off the ground.
As suggested, find a paved runway. Other options would be to convert it to a 6s 64mm power system like in the 64mm F-14 or 6s JL-15. Do some homework to make sure these systems will even work in your A-10. The other option is to sell it and get the bigger 80mm A-10. I know that one will take off from grass.
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Hi everyone, I have the plane built and was getting ready to center the flaps but I think I may have missed a step. Is there supposed to be a separate power lead for the receiver? I don't have a servo tester so I was just going to adjust the trim with the transmitter/ receiver. Does it draw power through the throttle lead? It seems all the tutorials skip over the wiring diagram / connecting the receiver part
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If you look at the specs, it tells you that this plane uses an 8A UBEC. This means it has an external BEC. You should see spliced into the ESC power leads (red and black), that UBEC. From it comes a lead with an servo type plug on the end. It's this end that gets plugged into your RX in any empty or "Y'd" port. This powers your RX.Originally posted by Zalastar View PostHi everyone, I have the plane built and was getting ready to center the flaps but I think I may have missed a step. Is there supposed to be a separate power lead for the receiver? I don't have a servo tester so I was just going to adjust the trim with the transmitter/ receiver. Does it draw power through the throttle lead? It seems all the tutorials skip over the wiring diagram / connecting the receiver part
Centering a servo with a servo tester isn't always the best thing to do as the "center" setting on the tester does not always coincide with the "center" of the servo when powered via the RX. Additionally, centering should be first done manually (after the servo is centered via the RX, by altering the length of the rod. Severe "sub-trim" should be taken out by manual rod adjustment whenever possible.
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I looked at the specs again and it doesn't say anything about an 8A UBEC, I did however read the technical bulletin about the red wire that everyone is complaining about being cut, and that it is intentional to keep the two individual BEC's from competing. I don't have an extra power lead that I can see but when I plugged in the the wire harness marked Throttle everything started working without having to plug in to the VCC/BVD port. It seems it is wired into that plugOriginally posted by xviper View PostIf you look at the specs, it tells you that this plane uses an 8A UBEC. This means it has an external BEC. You should see spliced into the ESC power leads (red and black), that UBEC. From it comes a lead with an servo type plug on the end. It's this end that gets plugged into your RX in any empty or "Y'd" port. This powers your RX.
Centering a servo with a servo tester isn't always the best thing to do as the "center" setting on the tester does not always coincide with the "center" of the servo when powered via the RX. Additionally, centering should be first done manually (after the servo is centered via the RX, by altering the length of the rod. Severe "sub-trim" should be taken out by manual rod adjustment whenever possible.
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I must extend my sincerest apologies to you. I was looking at my 80mm A-10 V2. Your 64mm A-10 has "SBEC's", which are built into the ESCs. You don't "have to" cut one red wire but it won't hurt to do so if that's what you're used to.Originally posted by Zalastar View Post
I looked at the specs again and it doesn't say anything about an 8A UBEC, I did however read the technical bulletin about the red wire that everyone is complaining about being cut, and that it is intentional to keep the two individual BEC's from competing. I don't have an extra power lead that I can see but when I plugged in the the wire harness marked Throttle everything started working without having to plug in to the VCC/BVD port. It seems it is wired into that plug
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Not to worry, thank you for taking the time to answer my question. . I am almost ready to fly. I have all my control surfaces calibrated to neutral, flashed my FS-16X with bug fix firmware, flashed my FS1a10B receiver with the FlySky Receiver RSSI Mod and I am seeing telemetry for the signal now.Originally posted by xviper View PostI must extend my sincerest apologies to you. I was looking at my 80mm A-10 V2. Your 64mm A-10 has "SBEC's", which are built into the ESCs. You don't "have to" cut one red wire but it won't hurt to do so if that's what you're used to.
This is what I have left to calibrate- Set the High and Low rates for my Flaps, Ailerons and Elevators
- Set the Dual Rates
- Check the Center of Balance
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There's nothing there to see.Originally posted by Zalastar View PostWhat follows in the next 30 seconds may result in shame and embarrassment (mine) and possible injury (yours) from falling out of your chair laughing. Please seek permission from your children before viewing.
Scroll down.....

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Well, as long as we're being nostalgic ......................................... Beautiful flight till about 3/4 way through the video. All passengers rescued by rowboat. It's flown many times since. The tail waggle was cured by cutting off the lower winglets and turning up the "yaw damper" (ie, rudder gain).
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