From what I hear about the 12-6EP, 10K will be too fast. I think 8500 to 9000 would be close. Maybe somebody who flies that prop will clarify what rpm its spinning. Also keep the weight under 54 oz. or you'll be running out of battery. Flight times are more like 5 min 15 sec.
This will change the tip shape. Is this a big deal?
I'm using a 10 x 5 APC on my 4S 950Kv powered Oriental, weight 48oz.The motor is a Rocket Exceed.I have the KR timer set for about 5m20s.I use about 1650ma of a 2100 pack.Not sure if you need the 11" of prop, but you might try an APC 11 x5 or 11x 6 as a starting place, then go from there.
I would try the standard props first, for the purpose of just getting in the ballpark of diameter/pitch/amp draw.After that if you really want to go to the left hand props, you could do that before tuning completely?For my skill level, I don't feel the need to worry about the prop rotation yet. Maybe someday. Plus, there are more combinations in the standard props.It seems that the left hand props have fallen out of favor with the upper skilled stunt pilots, if I recall correctly.Still, best of luck and if the pusher prop works best for you, better yet!I like the lines of the Pathfinder, but then again I like a LOT of that era stunt ships.R,Chris
I am planning to electrify a Pathfinder and I am hopping a 2700 4S, Emax GT 2820 850kv, KR Timer and APC 11x5.5 should work very well. It will be my first electric.I have not purchase the batteries yet, The 2700 4s is enough or should a get a 3000 4S?Also i got an Emax GT 2826 710kv in case the GT2820 is not enough.Martin
I am planning to electrify a Pathfinder and I am hopping a 2700 4S, Emax GT 2820 850kv, KR Timer and APC 11x5.5 should work very well. It will be my first electric.I have not purchase the batteries yet, The 2700 4s is enough or should a get a 3000 4S?Also i got an Emax GT 2826 710kv in case the GT2820 is not enough.MartinHi Martin, The E-Max GT 2820/06 with 975 Kv will work with the 11 x 5.5 E prop on 4 cells. The 850 Kv motor will need more pitch or a bigger prop like the APC 12 x 6 which could work as the Pathfinder is a bigger model than most other .40 glow size stunters. It usually needs at least an OS LA .46 to fly it. The 710 Kv motor will need 5 cells. As to the size of battery, it all depends on the overall weight. If it weighs less than 50 oz. (1420 grams) then the 2700 mAh 4S battery should be fine. A weight of 1300 grams would be a great weight for the Pathfinder, but like I said, it is a bigger model, so that may prove difficult to achieve. If you are building one from scratch you can save a lot of weight up front, but if you are modifying an existing glow version then I would suggest removing the complete nose and building a new one that is more suited to e-power. I have photo's of one way to do this if you need them.Keith R
Keith, I'd like to see those pictures. Could you post them here?
...my take-apart profile called Protron...
That sounds much more positive than the last airplane I saw you with.
Thanks, Keith, it's always good to see others' building techniques. I'm going to adopt some of what you did in the Banshee I'm building. Probably skip sawing the nose off, though.
Keith,Nice airfoils on both those models.Charles
Hi Howard, do you mean the "break-apart" model?? Keith R
Looks like I'm running out of "Trons" now!Keith R
Could a E-Flite Power 15 950kv, 4S 2700 battery, APC 11x5.5e prop be used in a reasonably light Pathfinder? 48-52oz range, ready to fly w/battery. I live at 4500ft elevation.
The E-Max GT 2820/06 with 975 Kv will work with the 11 x 5.5 E prop on 4 cells. If it weighs less than 50 oz. (1420 grams) then the 2700 mAh 4S battery should be fine. A weight of 1300 grams would be a great weight for the Pathfinder, but like I said, it is a bigger model, so that may prove difficult to achieve. If you are building one from scratch you can save a lot of weight up front, but if you are modifying an existing glow version then I would suggest removing the complete nose and building a new one that is more suited to e-power. (edited for clarity)Keith R
I converted my .46LA Pathfinder II to Electric a while ago with a Cobra 2826-12 Kv=760, Hubin FM-9, Phoenix 60 ESC, TP 5S 2700 25C Batt, and Igors 11x5C cf 3-blade. works very well.
Any progress, John?R,Chris
What's your rtf weight, Joe, and what did the plane weigh as a nitro version? I assume that it was kit built, not an arf, right?Thanks,Chris