Booooo!
Great Planes Giant P6E Hawk--Electric Conversion
- Thread starter willsonman
- Start date
Battery came in... initial impressions are interesting.
Definitely a 4S battery. In decent shape considering it was in a thin cardboard box in a mailing bag... no padding.
So, 3S? 5500mAh? 35C? Well, we know this is 4S for sure. The size seems right comparing to my 4500 45C battery so the 30C and 5000 may be right... Clearly not labeled correctly.
Initial balance is decent. At least they are all above 3.8 but what a spread!
Balance under load and currently charging at 0.5C
Given the cell condition I will for sure be conditioning this battery. I'll do 3 cycles of 0.5C charge and then discharge to 3.6V/cell. My charger will only do 3.3A on a 4S battery so I'll do that and discharge to 3.7V/cell three times. It will be a lot of work but I think it will help.
Once charged I will do a weigh-in and see if it really is 3oz more. It feels really similar to my 4500 45C packs.
Definitely a 4S battery. In decent shape considering it was in a thin cardboard box in a mailing bag... no padding.
So, 3S? 5500mAh? 35C? Well, we know this is 4S for sure. The size seems right comparing to my 4500 45C battery so the 30C and 5000 may be right... Clearly not labeled correctly.
Initial balance is decent. At least they are all above 3.8 but what a spread!
Balance under load and currently charging at 0.5C
Given the cell condition I will for sure be conditioning this battery. I'll do 3 cycles of 0.5C charge and then discharge to 3.6V/cell. My charger will only do 3.3A on a 4S battery so I'll do that and discharge to 3.7V/cell three times. It will be a lot of work but I think it will help.
Once charged I will do a weigh-in and see if it really is 3oz more. It feels really similar to my 4500 45C packs.
Yeah, I am! I think 1PM would be good. I can grab lunch and get out to the field. It takes about 10 min to put her together. 16 screws! I'll probably bring the Goon too so bring a camera!
Currently an hour into the charge and have 2460mA put in and only at 16.62 V... soooo if it really was charged to 50% for storage... I'm thinking this may really be a 5500mAh pack... We shall see.
Currently an hour into the charge and have 2460mA put in and only at 16.62 V... soooo if it really was charged to 50% for storage... I'm thinking this may really be a 5500mAh pack... We shall see.
189 minutes to a fully balanced charge. Added 3343 mAh. Pack weighed in at only 1/4 ounce more. Time to add lead.
Cool. I'll plan on being there with the camera gear. I assume guests can fly if they have a member with them? If so I'll bring out the nnP-38 and some other stuff.
Sure can and sounds good.
Well, I am very pleased to report that she does fly, and well at that! Carl (wilmracer) was kind enough to greet me at the field and we had a fun couple of hours together. I got two flights in.
First flight was uneventful. Quickly advance throttle with the elevator pulled and ease off at the plane got light. Gain some altitude and start to trim. A couple of clicks of down trim and a couple of left rudder. The speeds seems slow because it is slow, but I wanted it slow. At 1/5 scale a scale speed would be 41MPH. Roll rate is not the greatest but at the slow speed I think its fine. If I had more speed I'd easily be able to do some aerobatics. This thing is super stable. Landing took a couple of approaches and my first lading was a bit long but I got the feel for it... I nailed the second landing. Very happy with this bird and she should make a great showing at FTFF.
Carl got the video and he is working on getting it posted. Thanks again, Carl, for coming to hang out. Its always better to fly with friends!
First flight was uneventful. Quickly advance throttle with the elevator pulled and ease off at the plane got light. Gain some altitude and start to trim. A couple of clicks of down trim and a couple of left rudder. The speeds seems slow because it is slow, but I wanted it slow. At 1/5 scale a scale speed would be 41MPH. Roll rate is not the greatest but at the slow speed I think its fine. If I had more speed I'd easily be able to do some aerobatics. This thing is super stable. Landing took a couple of approaches and my first lading was a bit long but I got the feel for it... I nailed the second landing. Very happy with this bird and she should make a great showing at FTFF.
Carl got the video and he is working on getting it posted. Thanks again, Carl, for coming to hang out. Its always better to fly with friends!
Congrats on the successful maiden!
JohnRambozo
Posted a thousand or more times
Nice conversion! I'm glad to see a nice flight and uneventful landing. 
Many thanks for the well-wishes. I've really come to love these electric conversions. They are pretty easy. It makes picking up a used model a little less intimidating.
I wanted to mention that I got my 3rd sortie in on Sunday. Uneventful. Just a super airplane to fly. absolutely no bad tendencies and a pussycat to land. I think that as I go with this airplane I may end up going with a larger motor on 6S. It really lacks enough power to do anything more than basic flying. I guess that's what you get for about 100W/pound.
I dislike you right now.
I've been admiring that plane, but told myself it is probably a bear to fly. It's how I keep talking myself out of getting one.
Fred
I've been admiring that plane, but told myself it is probably a bear to fly. It's how I keep talking myself out of getting one.
Fred
Nope. Absolutely zero bad tendencies. I actually have an update for this but I'll post it a bit later.
I did the calculations and made the decision to go with 6S. I pulled the motor and prop from my P-47 that I do not have plans to fly in the near future. Same ESC.
Comparison. The larger motor is for the 6S setup. SK3 5055 320Kv. I looked and it seems that this particular motor is no longer sold. Oh well.
18x12 Xoar prop. 3 more inches of spinny blade of death.
Comparison. The larger motor is for the 6S setup. SK3 5055 320Kv. I looked and it seems that this particular motor is no longer sold. Oh well.
18x12 Xoar prop. 3 more inches of spinny blade of death.
I love working with the larger wood props, they look so much more "authentic" than plastic.
