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canadianR6 · 07-11-2015, 01:24 PM

Hi all, I recently finished my build on my new trex 500l and am loving how it flies compared to my 450! Anyways, I have three brand new turnigy blue 6s 3300 30c packs I am using. I'm a very tame flyer (general fff, flips, rolls, and inverted hover), and am only getting 4:30 flight time with the batteries coming down fairly warm with a small amount of puffing that subsides after it cools. Is this normal for a brand new battery to swell a little, or did I buy batteries with too small a c rating?
Cal

TR450ZS · 07-11-2015, 02:32 PM

That C rating is OK, I think something else is wrong. There were some build complaints on the 500L where the motor pinion/main gear mesh was too tight. Check yours. Also you did not indicate what sort of headspeed you are running?

canadianR6 · 07-11-2015, 03:42 PM

I checked the gear mesh, and it seemed fine. I have a little bit of play between the pinion and main gear when I turn the motor back and forth by hand. As for the head speed, I used the head speed calculator and came up with 3250 rotor rpm. I am also running 100-95-90-95-100 throttle curve on idle up 2.

TR450ZS · 07-12-2015, 02:42 AM

Lol. Nothing tame about that head speed or throttle curve. Actually I think all is OK then in that case.

canadianR6 · 07-12-2015, 07:20 AM

Haha, ok. I read that the 500 liked head speed forstability, so that's what I went with. Thank you for the help.
Cal

Gladius · 07-12-2015, 10:40 AM

I personally prefer 40C and up for batteries. I have some 25C Nanotechs that are noticeably warmer and more puffed than my higher rated packs.

I think that most people flying the Pro are flying around 3000-3100 rpm headspeed, so yours is definitely running a little hot!

canadianR6 · 07-12-2015, 06:45 PM

I'll have to grab some higher C batteriers the next time I'm in the mood to drop some dough. As for the high headspeed, that is the number I came up with after plugging in the specs for the main gear/pinion, and stock motor. The bird is bone stock, everything installed is what came with the kit. Should I lower the head speed by dialing down my throttle curve a bit?
Cal

Gladius · 07-12-2015, 11:13 PM

Quote:

Originally Posted by canadianR6

I'll have to grab some higher C batteriers the next time I'm in the mood to drop some dough. As for the high headspeed, that is the number I came up with after plugging in the specs for the main gear/pinion, and stock motor. The bird is bone stock, everything installed is what came with the kit. Should I lower the head speed by dialing down my throttle curve a bit?
Cal

What is your throttle curve set to now? Depending on where it is, you may want to go down a tooth in your pinion. Ideally, you want to be around 90% throttle.

canadianR6 · 07-13-2015, 06:10 AM

Typically I'm running in idle up 2 which I have set at 100-95-90-95-100 TC

DCflyer · 07-14-2015, 03:09 PM

Quote:

Originally Posted by canadianR6

Typically I'm running in idle up 2 which I have set at 100-95-90-95-100 TC

You're running Rpms I'm running on my 450 and flies ballistic lol. Your 500 is probably a dot with the click of the collective. I would definitely lower your TC. Don't go below 85% though or the esc will really start to run hot. For reference I run 2750-2800rpm governed on mine and it's more than enough power. Beyond that and I feel like I'm just wasting energy, tasking my batteries, and shortening my flight times for no reason.

The DFCs don't like really low headspeeds due to their tail ratio but you should be fine anywhere above 2700rpm. Try dialing it back a bit and see if the batteries come down in better shape. If you prefer high headspeeds is highly suggest some 45c batteries from pulse, gens ace, glacier, etc. one of the major brands.

canadianR6 · 07-14-2015, 08:20 PM

Good advice DCflyer, thank you. I'm gonna give a flat 90 tc a shot and see how she feels.

07-11-2015, 01:24 PM	#1 (permalink)
canadianR6 Registered Users Join Date: Aug 2014	How warm do your lipos get? Hi all, I recently finished my build on my new trex 500l and am loving how it flies compared to my 450! Anyways, I have three brand new turnigy blue 6s 3300 30c packs I am using. I'm a very tame flyer (general fff, flips, rolls, and inverted hover), and am only getting 4:30 flight time with the batteries coming down fairly warm with a small amount of puffing that subsides after it cools. Is this normal for a brand new battery to swell a little, or did I buy batteries with too small a c rating? Cal

07-11-2015, 02:32 PM	#2 (permalink)
TR450ZS Registered Users My HF Map location Join Date: Apr 2013	That C rating is OK, I think something else is wrong. There were some build complaints on the 500L where the motor pinion/main gear mesh was too tight. Check yours. Also you did not indicate what sort of headspeed you are running? __________________ Allan TREX 250 PRO,Talon15, GPRO, Zeal ----TREX 500 EFL PRO, GPRO, RAILS ----2x TREX 450PRO V2, 1xGPRO&1xBRAIN, Talon35, RAIL , Zeal ---- SAVOX powered TREX500 EFL in Roban scale UH1-N ---- TREX 600 EFL PRO, GPRO, RAILS ---- DX9 ----

07-12-2015, 02:42 AM	#4 (permalink)
TR450ZS Registered Users My HF Map location Join Date: Apr 2013	Lol. Nothing tame about that head speed or throttle curve. Actually I think all is OK then in that case. __________________ Allan TREX 250 PRO,Talon15, GPRO, Zeal ----TREX 500 EFL PRO, GPRO, RAILS ----2x TREX 450PRO V2, 1xGPRO&1xBRAIN, Talon35, RAIL , Zeal ---- SAVOX powered TREX500 EFL in Roban scale UH1-N ---- TREX 600 EFL PRO, GPRO, RAILS ---- DX9 ----

07-12-2015, 10:40 AM	#6 (permalink)
Gladius Registered Users Join Date: Nov 2012 Location: Maryland	I personally prefer 40C and up for batteries. I have some 25C Nanotechs that are noticeably warmer and more puffed than my higher rated packs. I think that most people flying the Pro are flying around 3000-3100 rpm headspeed, so yours is definitely running a little hot! __________________ <> Trex 600 ESP FBL, Trex 500 ESP FBL, Gaui X3, Oxy 3 <> <> Builds in progress: Logo 600SX, Synergy 516 <> *Spartan Vortex VX1e*

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07-11-2015, 03:42 PM	#3 (permalink)
canadianR6 Registered Users Thread Starter Join Date: Aug 2014	I checked the gear mesh, and it seemed fine. I have a little bit of play between the pinion and main gear when I turn the motor back and forth by hand. As for the head speed, I used the head speed calculator and came up with 3250 rotor rpm. I am also running 100-95-90-95-100 throttle curve on idle up 2.

07-12-2015, 07:20 AM	#5 (permalink)
canadianR6 Registered Users Thread Starter Join Date: Aug 2014	Haha, ok. I read that the 500 liked head speed forstability, so that's what I went with. Thank you for the help. Cal

07-12-2015, 06:45 PM	#7 (permalink)
canadianR6 Registered Users Thread Starter Join Date: Aug 2014	I'll have to grab some higher C batteriers the next time I'm in the mood to drop some dough. As for the high headspeed, that is the number I came up with after plugging in the specs for the main gear/pinion, and stock motor. The bird is bone stock, everything installed is what came with the kit. Should I lower the head speed by dialing down my throttle curve a bit? Cal

07-13-2015, 06:10 AM	#9 (permalink)
canadianR6 Registered Users Thread Starter Join Date: Aug 2014	Typically I'm running in idle up 2 which I have set at 100-95-90-95-100 TC

07-14-2015, 08:20 PM	#11 (permalink)
canadianR6 Registered Users Thread Starter Join Date: Aug 2014	Good advice DCflyer, thank you. I'm gonna give a flat 90 tc a shot and see how she feels.

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