RunRyder - E325 Turnigy E500 motor

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e-Thunder Tiger Raptor E Series > E325 Turnigy E500 motor

coolingfan
Senior Heliman
Location: Grand Junction, Colorado

According to ace hobby's formula. Your head speed would be aprox 3088 rpm with a 4000kv motor. In their manual it uses the formula.

Motor rpm= motorkv x volt{3.7} x series x constant [0.8}
head speed=motor rpm/gear ratio
gear ratio= 150/ motor pinion

4000 x 3.7 x3 x .8 = 35520
Gear ratio = 11.5
head speed= 3088

Is this formula incorrect?

07-03-2008 12:54 AM

coolingfan
Senior Heliman
Location: Grand Junction, Colorado

That's great the formula must be correct. I was wondering what the head speed would be with the align motor I am using. It is a 3700 kv motor. I am using a 13 tooth pinion. This gives me a head speed of 2857 rpm. This head speed is above what ace hobby recommends, but I flew it for the first time today and I say it is one smooth heli. Gotta get me another battery though. One is not enough!

07-03-2008 06:23 AM

RMG2
Senior Heliman
Location: Oregon, USA

Okay guys, these comments are mine and you may disagree but this is my experience. There is no way this motor can be run properly on less than 55-60AMP ESC! Unless of course you don't mind prematurely burning-out your lesser AMP ESC. My 45AMP Scorpion (seperate BEC) gets so hot running this motor you can barely touch the heat sink! And yes, the gear mesh is correct, etc.!

The inaccurate specifications on the HobbyCity web site says this motor makes 200-watts of power and to use a 20AMP+ ESC. Don't believe the specs. they are way wrong! This motor makes probably 500-watts peak power and pulls not less that 50-55AMPS surge!

On a positive note, this motor makes MONSTER power!

EDIT: 4EVER was kind enough to post data log information (reply below) so we all know exactly what this motor does do. It does peak at what I guessed with 55-amps, and does make 500+ watts peak power though the data shows much lower averages.

I will run this motor in my MT again, but I feel much better about running an ESC rated closer to peak AMP draw so the 45AMP Scorpion isn't going back on the heli with the Turnigy.

4EVER, thanks for posting "real life" data so folks can choose their componets as they see appropriate.

07-05-2008 07:42 PM

TheWheelieKing
Senior Heliman
Location: Oakland, CA

Does anybody agree with the above statement? After reading to the page before this I just ordered one.

I do not want to get a bigger ESC, but should I?

T][e\/\/][eeLieKi|\|g-{[Fly-or-Die]}-

07-12-2008 03:45 AM

bugsb
Veteran
Location: rothwell//northants UK

i cannot agree or disagree as i use the 40amp esc but do not push hard (3D) i only do basic's :loops rolls and a bit more if lucky head speed is 3000rpm approx flight times are down a bit with this motor
i think its all down to setup (blades/pinion) used as to how many amps you will pull
Ron

07-12-2008 09:05 AM

fern
Heliman
Location: Portugal

bugsb,

can you post your throttle curve setup & pinion?

07-13-2008 07:32 PM

4ever

Senior Heliman - Location: Austria -

I am using the E500 motor with a JAZZ 40 and 10 or 11 T pinion without any problems! Headspeed 2600-3000rpm!
Amp draw is 16-20A at normal flight with soft 3D but if you do full pitch climb outs or let the heli drop with full negativ pitch and stop him with full positiv pitch the E500 can produce 60A peaks!

So a JAZZ 40 or a CC45 would be no problem on 10-11T pinion!

07-14-2008 05:36 AM

RMG2
Senior Heliman
Location: Oregon, USA

4ever, good to see someone post who has a data logger and can give accurate data about this motor instead of speculation (like my own report).

I posted above about using a 50-60amp ESC and that may be overkill, but I won't run this Turnigy with my 45AMP Scorpion ESC again! I was also running an 11T and running a calculated headspeed of about 2900. 6-minutes of plain sport flying with +10 pitch climb-outs was as hard as I flew it and you could fry an egg on the ESC heat sink and darn near the same on the motor itself!

I don't have a temp. gun or a data logger, but the heat in the ESC and the motor just feels way to hot to be safe to me???

07-14-2008 06:01 AM

4ever
Senior Heliman
Location: Austria

OK, here are two logs with:

- JAZZ 40-6-18 (55% and 60% throttle)
- 11T Pinion
- Kokam H5 30C 3S1P 2100
- 10° Pitch

Skill: Fast forward flight with loops roles and flips!
Peaks are from fullpitch 10° climbouts!

http://www.eder.cc/heli/X500-4000-55.jpg
http://www.eder.cc/heli/X500-4000-60.jpg

I have a lot of flights with my JAZZ with no problem!

I am using the 10T pinion at the moment with 2600 rpm, that gives me 7 min. flight time with 210-220mA/min.

Temperatures are ~45 - 50°C at 30°C outside temperature, I am flying 8 packs in series and the temperature does not rise!

I like that small golden beast much more than my SCORPION HK2221-8V2!

07-14-2008 07:14 PM

RMG2
Senior Heliman
Location: Oregon, USA

4ever, thanks for posting the data links. I edited my post up above taking into account the data you gave

07-14-2008 11:11 PM

dick smith
Senior Heliman
Location: perth

Hey, ive just scored one of these motors, i hadnt seen this thread.Its interesting reading.I had the stock motor (3500kv)and a zpower450f(3800kv). Im keen to see its potential.Will be using it with the turnigy 40amp esc and turnigy 5A bec, Which will also be a first time.I'll do a couple o flights then put the ET logger on it................

07-18-2008 12:39 PM

bugsb
Veteran
Location: rothwell//northants UK

Fern
i am useing the 11t pinion not 100% sure as it was along time ago i fitted it
throttle curve 95% 0f the time i use idle up one at 85-85-85-85-85
normal curve 0-75-85-85-85
when i feel reckless i up the curve to 90-90-90-90-90
head speed 2900-3000
blades are from dealextream carbon and 2 sets of fibre glass they do the job for me
but as said i am not into 3D so i do not push the heli hard maybe thats why the 40amp esc has been ok but i do have a bec fitted as well that takes the pressure off the esc
Ron

07-19-2008 09:35 AM

TheWheelieKing
Senior Heliman
Location: Oakland, CA

Got my turnigy and 13t pinion. I had to file the motor plate and used a pick file and had it done in 7 minutes. Mounted at 12mins and in the air in 15mins total.

It is definatley louder then the stock motor. Head speed is up there. Using stock wood blades I used a generic 16C 2100 battery and it puffed like a balloon in 4mins of flight. I ran a TP 2070mah 25c/40c for 5mins and it was the hottest battery I ever felt. This was slow hovering in front of the house. The turnigy x500 motor and stock esc were slightly warmer then with the stock motor.

T][e\/\/][eeLieKi|\|g-{[Fly-or-Die]}-

07-19-2008 12:15 PM

bugsb
Veteran
Location: rothwell//northants UK

the stock blades are power hungry no matter what motor used
fit an 11t pinion and this will stop all the puffing on the li-po packs and the motor will stay cool you can get 3000rpm head speed with the 11t pinion
and with better blades longer flight times
Ron

07-19-2008 01:37 PM

TheWheelieKing
Senior Heliman
Location: Oakland, CA

I was doing 5 minute sport flying flights and I puffed my last 2 generic battery packs, a 16C and an 18C. Thats 3 packs total down the drain. I have 3 25C TP 2070's left and they were so frickin hot. I am about to buy these guys as they are cheap:

http://www.runryder.com/helicopter/...?top=1216579364

I am also going to get some puff proof batteries brand new, like this:

http://www.readyheli.com/Kong_Power...25-3charger.htm

Definatley need that better charger! I am also going to start looking into A123 batteries, both 3S and 4S. This Turnigy X500 4000kv motor is so much more demanding on the battery packs then the stock motor.

Does anyone know if a bigger then stock ESC (i.e. a 50A ESC) would help with cooling the battery packs?

T][e\/\/][eeLieKi|\|g-{[Fly-or-Die]}-

07-20-2008 07:47 PM

bugsb
Veteran
Location: rothwell//northants UK

the packs i use i got from H/Kong inc post $14 each 2200mah 25-30c
they run the titan and stay very cool but then so do my other packs
if you have to big a pinion you will puff the packs 13t pinions are way to big unless you have the li-po to match and into hard 3D
evan then an 11t pinion at 3000rpm head speed has loads of power for 3D
Ron

07-21-2008 07:44 PM

fenderstrat
Elite Veteran
Location: Aston,Pa

wheelieking...as already said get rid of the stock wood blades,I cant recommend the align woodies at the headspeed you guys are running but for me I picked up almost 2 min of runtime and the motor/esc were WAY cooler when I got rid of the stock wood blades and switched to align 325's

PerformancePlusRC field rep
COMPASS helis field rep
Mini Titan/SE
HBK2
Futaba FASST

07-22-2008 02:30 PM

Richardmid1
Veteran
Location: Leeds, England

Yes 13T pinion is way too big for this motor, if 11T gives you 3000rpm thats more than enough for hard 3D! If you are going to use a 13T pinion with this motor shorten your flights to 2.5-3 mins.

Eat, sleep, 3D, crash, repair, repeat...

07-22-2008 02:48 PM

TheWheelieKing
Senior Heliman
Location: Oakland, CA

Man, oh man, oh man...

Ok I puffed (like a popcorn bag) (3) Generic Packs and ruined (2) TP 2070 25C's and (1) TP 2200 V2 25C (brand new)and 1 TP 2100 20C. The TP's arent holding any charges. I'm getting "PUFF PROOF" packs from now on. I did the older TP packs at 4 minute flights.

I give up with this motor at 13T, so I put the old motor back in and will order a 11T pinion and some align 325's tonight. I thought nothing is worse then crashing, but I guess I was worng... hehehe... The cost of all them batteries I could of got a Mini-titan SE.

T][e\/\/][eeLieKi|\|g-{[Fly-or-Die]}-

07-23-2008 12:18 AM

fenderstrat
Elite Veteran
Location: Aston,Pa

Quote
I'm getting "PUFF PROOF" packs from now on. I did the older TP packs at 4 minute flights

I really dont think this is a good long term solution,so called "puff proof" packs still have their limitations,and must be used within certain guidelines.you need to really take a look at the WHOLE system you are runnning and match everything well.You need to consider how many amps this motor is drawing with certain pinions,and pick one that your esc and batts can handle,and from your recent results you are WAY exceeding the limits of the packs...is a 3000 plus headspeed REALLY necessary for your flight level(I am asking as I dont know)

on another note you may want to check out the PERFORMANCERC packs, you can get25, 30 and 33C packs they are great packs at a great price with nice warranties....Pm me and I can get you good prices on packs

PerformancePlusRC field rep
COMPASS helis field rep
Mini Titan/SE
HBK2
Futaba FASST

07-23-2008 04:12 AM

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e-Thunder Tiger Raptor E Series > E325 Turnigy E500 motor

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