GP 1/4 scale Piper Cub Conversion?
11-15-2004, 04:22 PM
#1
Senior Member
Thread Starter
Join Date: Oct 2004
Location: Littleton,
CO
Posts: 105
Likes: 0
Received 0 Likes
on
0 Posts
GP 1/4 scale Piper Cub Conversion?
Hello! I have a Great Planes 1/4 scale piper cub ARF that I plan on converting to e-power. The plane
has an approximate nitro finished weight of 8.5 pounds. Based on some research here I have narrowed
it down to two motors: the AXI 4120/14 or the Jeti Phasor 45-3 both with the recommended speed controllers.
I plan to use two, 3 cell lithium packs, probably in the 4000 mAh capacity range. Has anybody had e-flight
conversion success on this particular plane? If you would you be so kind as to make suggestions for my setup?
recommeded glow engines for this plane are 2 stroke .46 to mild .60 or four stroke .70 Thank you in advance for
your comments and suggestions!
Happy flying!
has an approximate nitro finished weight of 8.5 pounds. Based on some research here I have narrowed
it down to two motors: the AXI 4120/14 or the Jeti Phasor 45-3 both with the recommended speed controllers.
I plan to use two, 3 cell lithium packs, probably in the 4000 mAh capacity range. Has anybody had e-flight
conversion success on this particular plane? If you would you be so kind as to make suggestions for my setup?
recommeded glow engines for this plane are 2 stroke .46 to mild .60 or four stroke .70 Thank you in advance for
your comments and suggestions!
Happy flying!
11-15-2004, 04:39 PM
#2
My Feedback: (21)
Join Date: Jul 2002
Location: Spencerport, NY
Posts: 7,350
Likes: 0
Received 0 Likes
on
0 Posts
RE: GP 1/4 scale Piper Cub Conversion?
Two 3-cell LiPoly packs in what configuration? 3 in series or 6 in series? Volts are the electric equivalent of cubic inches and the number of cells in series determines Volts. A 3-in-series, or 3S LiPoly is more suitable for smaller airplanes, say, in the .25 size range. 6-in-series, or 6S, would be more suitable to larger airplanes in the .60-size range.
For .40-size airplanes, I would recommend a 4S or 5S LiPoly, then enough packs in parallel to handle the current, and/or give you the duration you want. Of the two motors, I would recommend the AXI because it can handle more power. That way, if you feel you don't have enough power, you can get more by adding a bigger prop or by going to a higher-voltage battery. With the Jeti, you'll have maxxed it out.
For .40-size airplanes, I would recommend a 4S or 5S LiPoly, then enough packs in parallel to handle the current, and/or give you the duration you want. Of the two motors, I would recommend the AXI because it can handle more power. That way, if you feel you don't have enough power, you can get more by adding a bigger prop or by going to a higher-voltage battery. With the Jeti, you'll have maxxed it out.
11-16-2004, 09:57 PM
#3
Senior Member
Thread Starter
Join Date: Oct 2004
Location: Littleton,
CO
Posts: 105
Likes: 0
Received 0 Likes
on
0 Posts
RE: GP 1/4 scale Piper Cub Conversion?
Thank you for your reply. I was considering 2 Kokam 5 cell, 18.5 v 2000 mAh packs from Hobby Lobby.
I was planning on wiring them in parallel. they are rated at 15C which I believe gives a 60amp discharge in parallel.
4000 mAh for the two pack configuration. I believe the packs sre $169 a piece. Does this sound like a pack configuration
that will work for this application? I am not sure if 4000 mAh will give me adequate flight times, 6-10 minutes perhaps?
I believe 3 of these packs in parallel would be closer to my preference, but thet sure add up quick! $$$$ [X(]
Thanks for your comments!
I was planning on wiring them in parallel. they are rated at 15C which I believe gives a 60amp discharge in parallel.
4000 mAh for the two pack configuration. I believe the packs sre $169 a piece. Does this sound like a pack configuration
that will work for this application? I am not sure if 4000 mAh will give me adequate flight times, 6-10 minutes perhaps?
I believe 3 of these packs in parallel would be closer to my preference, but thet sure add up quick! $$$$ [X(]
Thanks for your comments!
