RR Rated M For Mature
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 709 ONLINE 18 EVENTS SEARCH REGISTER  START HERE
 
1 page399 viewsPOST REPLY
CANOMOD . Experience RC . Heli-Max

.
.
e-Electric Conversions > T-Rex 700E Need some help!
 
 
buburub
Senior Heliman
Location: Bayside, NY

My Posts This: Topic  Forum		Hi Guys,
I just getting into the Trex 700E arena and need a little help.

If I am flying hardcore 3-D smack down should I get the 4000mah or 5000mah Zippy packs?

4000mah is lighter but would my flight time be too short? I'm looking for at least 4-4.5 minutes of pure power.

I also have a Scorpion 400KV motor with a 19 tooth pinion. It seems a little weak. Any Ideas on the ultimate motor choice for big power?

Thanks in Advance,
Bub
10-25-2009 10:11 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
MrNiceGuy
Senior Heliman
Location: Melboue, FL

My Posts This: Topic  Forum		I'd get the lighter ones. I run 4270s on mine and it does fine. If I use my Turnigy 5000s the thing weighs a ton and I have problems stripping out the main. I run a Scorpion 4035 560KV right now and even though it makes great power I am having issues with gear stripping with the heavier batts. I am running a 14 tooth pinion. I am probably going to a 400KV motor just for the sake of more tooth contact. Have you tried going to a higher tooth pinion? A friend has the 400KV in his and it has a ton of power but I think he's running a bigger pinion. He flies smack down 3D with his and it looks really strong. If you need more info PM me and I'll tell you who to contact. If I post it here I'll probably be accused of advertising and get kicked off of runryder
10-25-2009 10:28 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE  
 
 
buburub
Senior Heliman
Location: Bayside, NY

My Posts This: Topic  Forum		Wow...4270 huh? Where can I get a set of these batteries? So what your also saying is that 400KV Scorpion is capable of some power huh? Good to hear!
Bub
10-26-2009 12:37 AM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
MrNiceGuy
Senior Heliman
Location: Melboue, FL

My Posts This: Topic  Forum		Here's a vid of a 700e with 400KV Scorpion and the 4270s. No this is not me flying(I wish) This was also with a smaller pinion than is on it now. It makes more power in it's current set up.
http://www.youtube.com/watch?v=XekWeecfrJo

Did your keyboard come with that big bottle of Haterade?
10-26-2009 02:19 AM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE  
 
 
helicraze
Elite Veteran
Location: Victoria - Australia

My Posts This: Topic  Forum		If you think its weak on power perhaps its the packs you are using? What are you using?

More often than not the packs are limiting it and bogging it. Get som 45C TP!
10-26-2009 04:05 AM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE  
 
 
egiraldo911
New Heliman
Location: San Antonio, TX

My Posts This: Topic  Forum		700e

I am running a Scorpion 4030-560kV with lots of power. I am using a 11.5:1 gear ratio using FAD 115T mod 1 main gear and Scorpion 10T mod 1 pinion. I have not stripped a single tooth with this set up. I am not a hard core 3D flyer, but, I have been doing hard punch outs, tic-tocs, aileron rolls, and mild stuff. I am using the Turnigy 5000mAh lipos. They are super heavy, so, 4270's would probably be lovely for your set up. I usually get 7:00 minutes of flying and only get my lipo cell voltage down to 3.78V. Still in the safe zone. I am not running governor on my CC 110HV and have my idle up 2 at 70% straight curve with about 2000 RPM hs. As you can see, there is a lot of head room for governor use. I am just worry about the whole firmware issue with Castle Creations.
Also, I a have a FBL head on my 700e. This probably helped some on the efficiency side and got my more flying time and less stress on the whole electric system.

I have not run a data log yet, but, this is how it looks temperature wise:

Motor temp: 145 deg F.
ESC temp: 110 deg F.
Lipo temp: 90 deg. F.
Voltage leftover per cell: 3.78V




10-26-2009 02:42 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
helicraze
Elite Veteran
Location: Victoria - Australia

My Posts This: Topic  Forum		Your phasing looks off
10-26-2009 09:19 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE  
 
 
colsy
Elite Veteran
Location: Cambridge, UK

My Posts This: Topic  Forum
Quote 
my CC 110HV and have my idle up 2 at 70% straight curve with about 2000 RPM hs.

I dont understand this, why dont you optimize youre gearing to suit the headspeed youre 'obviously' happy with. ?

Running 70% on TR Curves 'end point's'. isnt effiecient use of your HV110.

Col.

Only Quote From Experience.
10-26-2009 09:41 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   HOMEPAGE   GALLERY
 
 
colsy
Elite Veteran
Location: Cambridge, UK

My Posts This: Topic  Forum
Quote 
Your phasing looks off

Hmm does, doesnt it

col.

Only Quote From Experience.
10-26-2009 09:42 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   HOMEPAGE   GALLERY
 
 
egiraldo911
New Heliman
Location: San Antonio, TX

My Posts This: Topic  Forum		Yes, it is off on this picture. This was the first piture I took of the head. I have already corrected the phasing. Now, about the head speed and throttle curve, what is the correct setting for it? To tell you the truth, this is my first time dealing with an electric this size and I have never have to deal with correct gear ratios and so forth. Can you give me some advice? Thanks.
10-26-2009 09:48 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
popiterflyer
Senior Heliman
Location: Va

My Posts This: Topic  Forum		You need to be at around 85% to put the esc in the efficiency range. The main reasoon for gear stripping is shaft flex. You can add the 3rd mount screw and it helps. Running the non gov setup worked for me also. Remeber, a 4035 560 scorpion had about 6.5 hp

www.NewEnglandHeli.com
Team NEH South
Trex 700NSP FBL
Trex 600LE FBL
Aeolus 50
10-27-2009 04:01 AM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   HOMEPAGE   GALLERY
 
 
buburub
Senior Heliman
Location: Bayside, NY

My Posts This: Topic  Forum		I have a CC 110HV. I'm currently running governor mode but a few guys say that I should run end points. What do you guys suggest?
10-27-2009 12:32 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
popiterflyer
Senior Heliman
Location: Va

My Posts This: Topic  Forum		Gov Stripped gears for me. Endpoints didnt, but when i finally got the motor locked in securely , it sheared the tailboom at IRCHA
So I think it was working good then. If its not stripping then leave gov on.

www.NewEnglandHeli.com
Team NEH South
Trex 700NSP FBL
Trex 600LE FBL
Aeolus 50
10-27-2009 01:23 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   HOMEPAGE   GALLERY
 
 
Band1086
Senior Heliman
Location: Kennewick, Wa. USA

My Posts This: Topic  Forum		Running a 560 on mine, 2000HS. 11.7 mod 1 gearing Jeti Spin Gov mode.
Endless power. Flying TP 5000 45C. they come in cooler than the Zippy's. A touch heavier though. But NO bog no matter how hard I push.
10-28-2009 07:20 AM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
egiraldo911
New Heliman
Location: San Antonio, TX

My Posts This: Topic  Forum		Wow! 85% is hard to get with the 4035-560kV motor. I would need like a 13.5:1 ratio. Right? The best I could do with what is offer out there as fas as gears go is 11.7:1 ratio with a 117T main and 10T pinion. I don't know if my math is correct. I am using the governor now and I am still at 70% curve for 1950 RPM and 71% for 2050 RPM. I will try the 117T main gear and see how that does to my curve.
10-28-2009 02:03 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
Band1086
Senior Heliman
Location: Kennewick, Wa. USA

My Posts This: Topic  Forum		What is the target head speed you want while flying?
10-28-2009 03:06 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
egiraldo911
New Heliman
Location: San Antonio, TX

My Posts This: Topic  Forum		I want between 1950 and 2000 RPM. I believe that is where the 700 handles better.
10-28-2009 03:23 PM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
Band1086
Senior Heliman
Location: Kennewick, Wa. USA

My Posts This: Topic  Forum		That's where my second 700E is, and it flys good.
10-29-2009 01:54 AM
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
1 page399 viewsPOST REPLY
Hobby Hut . Heli Wholesaler . JR-Spektrum

.
.
e-Electric Conversions > T-Rex 700E Need some help!
 Print TOPIC Advertisers 

Subscribe to This Topic

Monday, November 23 - 2:37 pm - Copyright © 2000 - 2009 runryder.com | email | link to rr | START HERE | NF