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egiraldo911
10-05-2009, 02:55 PM
Thanks for all the info. I really appreciated.:thumbup:

rceccleston
10-05-2009, 03:05 PM
5000 6s 30C turnigy initial review - HeliFreak

700enewby
10-06-2009, 04:14 PM
i have a 10s set up and a 12s setup but even my 5s packs are 5000mah and on 10s ive had no issues i wouldnt try the 3000 packs if i were you

egiraldo911
10-07-2009, 12:15 AM
Has anybody tried the Turnigy 5000 mAh 35C lipos? They seem pretty heavy 835g or something like that for each lipo. Isn't that to much wieght? I am not sure what to get. Everything else is out of stock and I hear it takes a long time before Hobbycity stock them again. I think I am going for the Turnigy 35C.

700enewby
10-07-2009, 05:45 PM
i use the turnigy and ive had no problems my buddy used the zippy's and went down in flames im sticking with the turnigy packs ive got probably 25 or more flights on my packs and there doing great

egiraldo911
10-09-2009, 10:56 AM
HI, I am almost done with my conversion and I can't wait to fly this baby. I have a question though. I Got a BEC to run the servos and receiver, but, I am not sure if it better to connected to the big batteries or to add a smaller battery for the servos and receiver like a 7.4v Align lipo. Would the BEC reduce my flight time by a lot? Thanks in advance for the replies.

700enewby
10-09-2009, 11:00 AM
i use a 2s lipo with a bec in my bird good thing with that is that if something happens to the main batteries you still have the radio system working so that you can auto it in . hope this helps

egiraldo911
10-11-2009, 09:58 PM
OK, I finally finished my T-Rex 700 electric and I couldn't be more happy. It looks great and I cannot wait get it up in the air. I am still waiting for my Turnigy's. This is my set up:

Helidirect Conversion kit
CC 110HV ESC
10A Hercules BEC
Scorpion 4035-560kV
15T Pinion/164T stock gear
Turnigy 5000mAh 35C packs
RJX Flybarless head (no electronics)
Align 620 servos all around
Align GP750 Gyro
G5 Wide Chord 710mm blades

The conversion process was not bad at all. The Helidirect kit was easy to install and the installation of the motor was easy to do. I did have to do some modifications to the frame in order to be able to strap a battery pack on the back under the tail gears. I also had to cut some slits on the sides in order to be able to use a strap to hold the battery. As far as the gear goes, I am going to stick with the stock gear for a while and try it out. I added some pictures of the completed conversion.

statton1
10-11-2009, 11:09 PM
can't wait to see it spool up FBL yeah!!!!!

:YeaBaby: :noteworthy

Mr Nice Guy
10-12-2009, 10:30 AM
OK, I finally finished my T-Rex 700 electric and I couldn't be more happy. It looks great and I cannot wait get it up in the air. I am still waiting for my Turnigy's. This is my set up:

Helidirect Conversion kit
CC 110HV ESC
10A Hercules BEC
Scorpion 4035-560kV
15T Pinion/164T stock gear
Turnigy 5000mAh 35C packs
RJX Flybarless head (no electronics)
Align 620 servos all around
Align GP750 Gyro
G5 Wide Chord 710mm blades

The conversion process was not bad at all. The Helidirect kit was easy to install and the installation of the motor was easy to do. I did have to do some modifications to the frame in order to be able to strap a battery pack on the back under the tail gears. I also had to cut some slits on the sides in order to be able to use a strap to hold the battery. As far as the gear goes, I am going to stick with the stock gear for a while and try it out. I added some pictures of the completed conversion.

Just make sure you run the gear mesh as tight as you can get it without any binding. Otherwise you will strip the gear. You are running one more tooth than I am so you will definitely have a rocket on your hands. Have fun:thumbup:

700enewby
10-12-2009, 11:49 AM
make sure you check temps on batteries , esc , and motor i used that set up and the motor got way to hot i had to go to a 14 pinion and when i did it worked out fine hope this helps

egiraldo911
10-12-2009, 11:55 AM
Thanks for the info. I was not really sure on what to use. There was so much information out there that it was somewhat confusing about which way to go. I do have a Mod 1 (115T) and 10T pinion from FAD that will give me a little higher ratio. I just wanted to try out the stock main gear. they are cheaper to replace and are more available. I will order a 14T pinion though to have handy. Thanks again.

egiraldo911
10-12-2009, 12:18 PM
I have another question: what kind of throttle curves are recommended for this set up. I have read flat curves for IDL1 and IDL2. How about NORM? I also have to set up the ESC. Still reading info about it. Thanks.

700enewby
10-12-2009, 02:07 PM
hello freaks got a ?? how low can i discharge a 6s pack im getting different answers 1st answer i got was no less than 22.5 volts 2nd answer i was told you can run it down to around 18.5 safely. what do you guys think i dont want to toast my packs but i want more than 5 mins flight time

egiraldo911
10-12-2009, 02:49 PM
hello freaks got a ?? how low can i discharge a 6s pack im getting different answers 1st answer i got was no less than 22.5 volts 2nd answer i was told you can run it down to around 18.5 safely. what do you guys think i dont want to toast my packs but i want more than 5 mins flight time

Well, you don't want to drain your batteries too close to 3V per cell. I would say a safe low voltage per cell to be around 3.2V. That's 19.2V for a 6S pack. however, it would be a good idea to always follow the 80% rule.

egiraldo911
10-13-2009, 08:54 PM
Wow! Finally got my Turnigys 35C today. The are humongous!:shock: Now my heli weighs at 11.4 Lbs. Man! This is a heavy heli. Let's see how it does. Unfortunately, I cannot test fly it today because I got the lipos late and is dark outside. I will post my results once I get it going. Here are some more pics.

MarkFlysHelis
10-13-2009, 10:58 PM
11.4 is nothing......My 700N weighs just shy of 12lbs and my 700LE-E comes in @ a stealthy 12.6lbs, flies like it's -0-

ADHDJeff
10-13-2009, 10:59 PM
Is there an advantage to running 35C packs in a high-voltage setup?

egiraldo911
10-13-2009, 11:37 PM
Well, it is not really necesary to go that high, but, you don't want to go to low either because you can damage your battery or ESC. The discharge rate is how fast a battery can be discharged safely. There is a formula to figure out what your minimum required C rating should be for your set up. First, figure out the ESC's max amp rating. In my case, a 110 A ESC. Next, I know I want to use 5000mAh batteries. With a 700 you want to go with at least 5000mAh. Multiply that number by the rating, let's say 35C. That is 5000 X 35 = 175000 or 175 Amps. As you can see, I have plenty of power to demand from those batteries. I know I won't be pulling max power all the time, but, at least I feel confortable I have a good buffer zone. On the other hand, if you have 3600mAh batteries rated at 20C, that would be 72000 or 72 Amps. If that motor requires more than 72 Amps from that ESC at one point, it might cause problems for the battery or the ESC. I think it is safer to have a buffer zone. 25C's are probably good: 5000 x 25 = 125000 or 125 Amps, but, 20C's is cutting it close: 5000 x 20 = 100000 or 100 Amps. I have seen the data logs on these motors and sometimes they can pull amperage of more than 100 Amps for an instant when doing 3D. I hope that helps clear up the discharge rating question. Besides, for the price of those Turnigy's why not get the extra juice.;)

egiraldo911
10-15-2009, 07:21 PM
I spooled up the heli for the first time today. And all I can say is: WOW!!!!!! :wow2: This thing is a rocket! And because I am flying FBL without STAB system, this thing is so responsive. I thought I could hover it in the back yard. BAD IDEA! Nothing happened though, but, I almost shopped off the banana trees. Very scary! I can't wait to fly it at the field. It is getting dark now.

Helipsyko
10-15-2009, 07:33 PM
Pulled 143 amps with my Neu 1915 today, 6100watts, with 25c turnigys.
I will try 35c in a few days, will be intersting to see if there is more to get.

ADHDJeff
10-15-2009, 09:25 PM
I am flying FBL without STAB system, this thing is so responsive.

No flybar and no FBL electronics...? :shock:

How do you walk with testicles that big?

egiraldo911
10-15-2009, 10:23 PM
No flybar and no FBL electronics...? :shock:

How do you walk with testicles that big?

Hahaha, well, I couldn't find them earlier when I was doing the test hover. Believe it or not, it is not as bad as I thought. However, you have to really fly the heli.

700enewby
10-16-2009, 11:05 AM
congrats just be careful with that main gear :thumbup:

Helipsyko
10-17-2009, 07:26 AM
Tested the 35c, but only hoover and one punchout, as it was the first flight. The packs are very powerfull. The short punch had no hearable loss of hs, even with +14 in pitch.
Did only 5820watts, 138A, but the feel was very different, with the 25c it is more of a "slingshot" punch, but with this packs it was PUNCH, just too short to get a real ET on it.
Will be very interesting to test them for real after 3-4 more break in flights.
This will be my new setup, no question.:banana