RunRyder RC
WATCH
 1 page 716 views Post Reply
Home✈️Aircraft🚁Helicoptere-AlignT-REX 600 › New Elevation
02-27-2010 01:32 AM  10 years ago
Topic Vote0Post 1
gin&tonic

rrNovice

Flagstaff,AZ

MyPosts All Forum Topic
New Elevation
I have a T-rex 600e stock motor and gears. I just moved from 300' elevation to 7000' elevation so obviously theres not as much "pop" as there used to be. Is there any way to get it Back at this elevation?
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-27-2010 01:50 AM  10 years ago
FlaG8r

rrElite Veteran

Florida

MyPosts All Forum Topic
would the elevation really affect an electric that much? maybe it's those 6S praying for another couple of cells Life is tough, it's tougher if you're stupid
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-27-2010 02:27 AM  10 years ago
NQNA

rrElite Veteran

USA

MyPosts All Forum Topic
Yes it will. Air density decreases with altitute.. less dense air.. less air to be moved by the blades.. less performance .. less pop. Being electric powered doesn't change that.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-27-2010 04:03 PM  10 years ago
gin&tonic

rrNovice

Flagstaff,AZ

MyPosts All Forum Topic
I heard increasing the head speed and the width of blades will help but will that start to bog the motor. is it time to get a new motor?
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-27-2010 04:44 PM  10 years ago
FlaG8r

rrElite Veteran

Florida

MyPosts All Forum Topic
what HS/ pack count are you running?Life is tough, it's tougher if you're stupid
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-27-2010 07:32 PM  10 years ago
gin&tonic

rrNovice

Flagstaff,AZ

MyPosts All Forum Topic
flight power EVO 25 6s 5000mah 25c continous 50C burst
w/ 10 tooth pinion
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-27-2010 08:16 PM  10 years ago
FlaG8r

rrElite Veteran

Florida

MyPosts All Forum Topic
From everything I've read on here, a Trex 600 is pretty slow on 6S. Considering your now at a high elevation, you may consider going 8S. You could crank up the HS but at some point your going to loose time.Life is tough, it's tougher if you're stupid
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-27-2010 11:13 PM  10 years ago
gin&tonic

rrNovice

Flagstaff,AZ

MyPosts All Forum Topic
Im trying to stay away from adding weight....while adding power.
if i did go 8s would the weight to power ratio equal out at this Elevation ?...
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-28-2010 01:27 AM  10 years ago
Spitfire1

rrElite Veteran

Perth Australia

MyPosts All Forum Topic
We also found Flightpower`s are a bit behind the 8 ball compared to all the other packs we use nowadays. Get some cheap turnigy`s, even the 20c ones will have more punch than the flightpower 25`s, but you may aswell get 30c for a few extra dollars.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-28-2010 01:49 AM  10 years ago
gin&tonic

rrNovice

Flagstaff,AZ

MyPosts All Forum Topic
I was curious about that.. The price just seemed to good to be true
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-28-2010 01:55 AM  10 years ago
Spitfire1

rrElite Veteran

Perth Australia

MyPosts All Forum Topic
We used to pay well over $300 for Flightpower`s, they were good in there time the best. I think we were paying up to $350, then Outrage came out and were a bit less $270 - $320 that were much better, then Zippy and Turnigy came out that seem as good as Otrage and cost much less.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-28-2010 02:08 AM  10 years ago
gin&tonic

rrNovice

Flagstaff,AZ

MyPosts All Forum Topic
Yea ..im gonna give those a shot.. what do you think about the rest of my problem, can it be remedied
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-28-2010 02:47 AM  10 years ago
ArtK

rrVeteran

Temecula, Ca

MyPosts All Forum Topic
6s vs 8s
I am a big believer in higher cell count. Not so much for performance but rather for battery life. Less heat losses in the battery. With that said even 6s is ok to run at high power. You simply need to get a good high KV motor that has low internal resistance. Neu motors in my experience are great for that. As for high altitude, performance will suffer so you will need to run your bird harder to get the same performance. You might consider going up a pinion size and decreasing your flight time to < 3.5 minutes. That will give you some added performance at the cost of endurance. Adding weight is not the solution if performance is your objective. Also running and charging your packs in cold conditions increases pack internal resistance and thus decreases C rating. They run best above 90 deg F. You might consider pre-warming them before you fly. There might be a nice safe warm spot in your car's engine compartment that could work. Never charge your batteries in cold conditions.

Hope this helps.
Art K.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-28-2010 02:48 AM  10 years ago
Spitfire1

rrElite Veteran

Perth Australia

MyPosts All Forum Topic
The power is marginal at the best of times on 6s, higher cell count or get a 500 size as a second heli, they have good power stock.

What trex 600 is it, 1100 kv motor or 1750 kv?

Are you running 100% flat throttle curve?

If its 1750kv use 11t pinion, if its 1100 kv 15t, maybe even 16t.

I found CF blades make more difference than I would have ever thought, I only realised this after putting on GF blades to try and save money after a crash, with GF blades the heli feels very mushy.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-28-2010 04:57 AM  10 years ago
ArtK

rrVeteran

Temecula, Ca

MyPosts All Forum Topic
Higher vs lower Cell Count
I have seen a trex 600 run at 2500 RPM Solid on 6s for 3.5 minutes. It all depends on the battery, motor, and setup. I still like high voltage for the simple reason that a battery with a lower C rating works just as well as high C rated battery at low voltage. There is a point when high voltage looses it's advantages. When running lower amps < 2200 high voltage means you get less battery for the amount of packaging. I find when running 450 size helis 4s is as high as you want to go without losing performance.

The way I gauge a battery's overal capabilities is by the following.

Power= Voltage x Amps
Weight= < weight = less power required.
C rating- higher C rating more delivered amps.

Ideally you want the highest power battery at the lightest weight with the highest C rating. When you stack batteries you can get better performance without the C rating at the price of weight. If you have a high C rated battery at a lower voltage you get the same thing, usually also at the price of weight.

But at the end of the day the motor only sees power and when you increase the voltage you increase amps. So finding a motor that runs at lower voltage- High KV at high efficiency, you can get as much out of a 6s pack as you do a 12s pack of the same power.

The battery is essentially a sack of lithium and conductors. The bigger the sack the more energy that can be held in it whether it is a 12 or 6s it doesn't matter as long as the equipment on the other end is setup properly for it.

To give you an example I fly a logo 600 12s. 4000 mah. So that's 177 Watts per hr. I can get 5-8 minutes of hard to moderate 3D flight with that. So if I changed that to 6s at 8000 mah that would also be 177 watts per hr. I know that if I doubled my motor KV I would get about the same performance provided the C rating was high enough. The 6S 8000 mah pack would weigh less if it was the same C rating as the 12S pack simply due to less packaging. But increase the C rating and your about at the same place. So at the end it is a wash. Biggest advantage is that low price low C batteries can be stacked together to give you the same performance and will last longer when stacked together. But if you could find a Low price high C battery with the same power it will probably equate to the same overall performance.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-03-2010 02:02 PM  10 years ago
gin&tonic

rrNovice

Flagstaff,AZ

MyPosts All Forum Topic
WoW!... Thanks for all the great info guys.. Now all I need to do is go to work and make some money so i can can buy a few new things for the Rex. I love this site, everyone is so helpfull. Well of to work.....If theres anymore tips, please post....
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 716 views Post Reply
Home✈️Aircraft🚁Helicoptere-AlignT-REX 600 › New Elevation
Print TOPIC

 3  Topic Subscribe

Sunday, November 29 - 7:48 pm - Copyright © 2000-2020 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online