Update: Batteries stay very cool. Drawing 80 amps at full speed and full throttle with a 24x12 xoar. Speed is decent but could easily go to a 24x13 for a bit more speed. Motor is barely warm after flight. High speed/full throttle pass after pass and general circle flying- I’m getting 12+ minutes per flight leaving 3.75 volts per cell. All this with zero added balancing weight on this airplane. I did put a Bad Ass 26x10 on her. That makes for outstanding prop rip (love that) but not great on the speed. Prop rip (if that’s your thing) on the 24x12 is also very good. I may order up a Bad Ass 26x12 since that is the scale diameter and would give better speed and likely great prop rip, but will obviously heat things up and shorten the flight time. Lots of options here. I’ve been flying in 45 degree weather. So yes, summer will also heat things up up a bit.
As you increase prop diameter AirSpeed slows down a 22/15 would give you the speed you're looking for but you also must take into consideration current draw which you should check as real-time telemetry& aim for maximum current that motor is rated at.. .
I used a similar method with the velcro and strap on another P-51 electric conversion about 12 years ago. It allowed me to use different pack sizes and mark each pack with a CG alignment mark. A friend converted his Top Flite model with the top-entry pack setup, but his used 4 large packs, so it wasn't bad on CG.
This is pretty cool because this is pushing the limits a bit more than usual on electrics. I build a bunch of big electric WW1, and the split cowl is the key !! I would try to make some simple type pin in the front of the cowl. I have had air pressure inside the cowl pop my cowl half off before. However your cowl is much less likely to do that,, I just hope your batteries run cool enough. That will be the second test.
Really enjoyed the video. ( You need a tripod for that camera... 😀). I've yet to get into the BIG electric planes, but you are inspiring me. Thanks for sharing. Will
I'm in the process of converting my Great plains tiger moth to electric because my old OS 91 4-stroke is getting pretty tired and I plan on using it for fpv.. in the same boat it wasn't really designed for electric but I will make it work..
Update:
Batteries stay very cool. Drawing 80 amps at full speed and full throttle with a 24x12 xoar. Speed is decent but could easily go to a 24x13 for a bit more speed. Motor is barely warm after flight. High speed/full throttle pass after pass and general circle flying- I’m getting 12+ minutes per flight leaving 3.75 volts per cell. All this with zero added balancing weight on this airplane. I did put a Bad Ass 26x10 on her. That makes for outstanding prop rip (love that) but not great on the speed. Prop rip (if that’s your thing) on the 24x12 is also very good. I may order up a Bad Ass 26x12 since that is the scale diameter and would give better speed and likely great prop rip, but will obviously heat things up and shorten the flight time. Lots of options here. I’ve been flying in 45 degree weather. So yes, summer will also heat things up up a bit.
As you increase prop diameter AirSpeed slows down a 22/15 would give you the speed you're looking for but you also must take into consideration current draw which you should check as real-time telemetry& aim for maximum current that motor is rated at.. .
I used a similar method with the velcro and strap on another P-51 electric conversion about 12 years ago. It allowed me to use different pack sizes and mark each pack with a CG alignment mark. A friend converted his Top Flite model with the top-entry pack setup, but his used 4 large packs, so it wasn't bad on CG.
Modelling at its best
This is pretty cool because this is pushing the limits a bit more than usual on electrics. I build a bunch of big electric WW1, and the split cowl is the key !! I would try to make some simple type pin in the front of the cowl. I have had air pressure inside the cowl pop my cowl half off before. However your cowl is much less likely to do that,, I just hope your batteries run cool enough. That will be the second test.
Really enjoyed the video. ( You need a tripod for that camera... 😀). I've yet to get into the BIG electric planes, but you are inspiring me. Thanks for sharing. Will
hope we get to see her fly !! Thanks
I'm in the process of converting my Great plains tiger moth to electric because my old OS 91 4-stroke is getting pretty tired and I plan on using it for fpv.. in the same boat it wasn't really designed for electric but I will make it work..