E-flite F16 90mm Maiden Flight Disaster - Crash - F16 80mm conversion

ESC Overheated.
Please comment with any ideas or suggestions.
Thanks.

[@dont6441]

The pulsing problem is frequently caused by a weak battery. One weak cell can make a battery unusable.

[@Reptielenfreak]

most 90MM fligh on a 120 to 130amp ESC. Your had a 85A stock esc?

[@GearUpRc]

On the video your transmitter was saying that you had a hold which means the receiver lost signal. It could be one reason why it went down.

[@BDTennessee]

1)Jet went down you had a hold which is signal loss 2) Radio configuration needs some corrections 3) Motor is pulsing cause the ESC is hitting LVC

[@JetGuyProductions]

Wow! I feel honored that you commented on my video here. I watch a ton of your videos. I believe all three of your points are correct and I think I’ve got it fixed. I’m gonna take it up here again if I get some decent weather and post a new video showing the results. I really appreciate your input. Thanks.

[@jeremyduff9313]

I didn't know eflight had a 90 mm f16

[@JetGuyProductions]

@@jeremyduff9313 they do if you take the 90 mm EDF and Esc out of a crashed viper and make it fit into the 80 mm F-16. My field is under a TFR all weekend so maybe next weekend I’ll remaiden it and see how well it works after the changes have made to it to try to get it to fly right

[@jeremyduff9313]

Yeah I misread the title. That's cool you made that work in the 80mm fuselage

[@JetGuyProductions]

I tested the amp draw at 121. I opened up the cover on the EDF so that there would be no airflow restriction and I got 112 amp draw. I ported the exhaust put the cover back on and got the same 121 amp draw. I opened up the cheaters And I got 114 amp draw. Basically I was starving the EDF. I may open them further to lower the app draw as well although I doubt I can get below 112. I also moved the ECS out of the little pocket that it was in and just put it inside the inlet tube and it was running cooler. Out of all those things however I’m still only getting like a two minute runtime on a 6S 5000!? If I baby the throttle I’m sure I could run for three minutes but a couple full throttle passes and I’ll be out of juice. Nothing compared to what the viper got. Not sure what to do about that. I could probably squeeze a 6S 7000 in there if i had to. It does have a lot more power so I’m not sure exactly how it would handle with 7000 mAh battery or if it was CG. I’m gonna program my telemetry to give me warnings and remaiden it soon.

[@michaellussoro2295]

2 minutes? Your starving that fan for air using more throttle than needed to keep in flight, my Zeus flys for 6 minutes on 8s5000s .

[@scottmccluskey8055]

What timing is set in the ESC? Might not be low enough.

[@JetGuyProductions]

@@scottmccluskey8055 timing??? I’ll need to research that some.

[@M4rkmcc21]

What was your amp reading at max throttle?

[@JetGuyProductions]

@@M4rkmcc21 not sure. Any idea what it should be? I could set up my telemetry to let me know

[@M4rkmcc21]

​@JetGuyProductions if you let me know what 90edf if you put in I'll compare it to my results on my 90 jets and all the different combos I've recorded. 130A esc should cover it but then the intake and exhaust dimensions of your stock jet will be causing the motor to work harder than usual. Be interesting what your telemetry says.

[@JetGuyProductions]

@@M4rkmcc21 I’ll post the results before and after I re-port it. I was comparing the inlet size to the viper inlet size and I think that could be an issue. The Viper seems to have a much larger inlet, I’m going to calculate it out. The outlet is only a 3mm difference on the diameter. I plan on opening the exhaust side too but I think that’s far less of a problem. Thanks for your help and I’ll post the results.

[@JetGuyProductions]

kzbin.info/www/bejne/rpyUcmZ7n6-sb6Msi=955nbC7vhzAZtJMk

[@Mikeylikesit1968]

Probably using a Spekjunk transmitter