RunRyder RC
 10  Topic Subscribe
WATCH
 2 pages [ <<    <     1     ( 2 )    >    >> ] 2036 views POST REPLY
HelicopterAlignT-REX 700N › Trex main shaft needs to be hardened
10-19-2009 03:54 PM  8 years agoPost 21
misfits0311

rrKey Veteran

Santa Clarita, CA - USA

My Posts: All  Forum  Topic

How much horsepower does the T700E's brushless motor have? Couldn't that have a factor as well as excessive headspeed?

╘ₒ₲ₒ 6°° ƺƉ ṾЪ∂®

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-20-2009 04:26 AM  8 years agoPost 22
popiterflyer

rrApprentice

Va

My Posts: All  Forum  Topic

My 700E with the scorpion 4035-540 was pushing 6.6 HP at 2150 an the head

PM  EMAIL  GALLERY  Attn:RR  Quote
10-20-2009 04:31 AM  8 years agoPost 23
Justin Stuart (RIP)

rrMaster

Plano, Texas

My Posts: All  Forum  Topic

My 700E with the scorpion 4035-540 was pushing 6.6 HP at 2150 an the head
Just curious, but how did you calculate this value?

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

PM  EMAIL  GALLERY  Attn:RR  Quote
10-20-2009 04:32 AM  8 years agoPost 24
haq0901

rrVeteran

Miami, FL USA

My Posts: All  Forum  Topic

My 700E with the scorpion 4035-540 was pushing 6.6 HP at 2150 an the head
That is just NOT right!

Im pretty sure it would bog all the time.
Just curious, but how did you calculate this value?
746 watts = 1 hp so in his case 6.6hp x 746watts = 4923.6 watts
Im pretty sure he probably recorded it with a data logging device of some sort.

PM  EMAIL  Attn:RR  Quote
10-20-2009 01:39 PM  8 years agoPost 25
Justin Stuart (RIP)

rrMaster

Plano, Texas

My Posts: All  Forum  Topic

I'm just curious because people throw all sorts of figures out there with no basis in reality.

I don't know that a Scorpion 4035-540 exists, but the Scorpion 4035-530 is rated at 3500 watts which is abut 4.6HP. That's about 70% of the stated value.

Maybe popiterflyer has a different motor, or maybe he has some data logging equipment, but either way I would like a clarification as to how he arrived at those numbers. I'm really not sure how Scorpion determines the numbers they publish, so some experimental data would be helpful to either verify or discredit the published values.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

PM  EMAIL  GALLERY  Attn:RR  Quote
10-20-2009 02:17 PM  8 years agoPost 26
MrMel

rrProfessor

Gotland

My Posts: All  Forum  Topic

Motor ratings is for cont. Use, we heli people peak alot higher.

I peak 5000 regulary on my logo 700.
I use hyperion emeter.

I can post graphs later, on my iphone at the moment.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

PM  EMAIL  GALLERY  Attn:RR  Quote
10-20-2009 04:58 PM  8 years agoPost 27
Janis

rrApprentice

Århus, Denmark

My Posts: All  Forum  Topic

Hi,

Its just funny with all these Watts ratings. Not to offend anyone but,
you cannot just converte the watts to horsepower and then say the Heli has 6.6 HP.
If you will have this value on the head the maingear will only last for a few seconds.
These are the peak value which goes thru the system. I dont know what
of those ratings goes to the heat and what is really comming to the head.
I have a 12s heli too so I know that we have a lot of more power then a 90 nitro, but for sure its not 6,6 HP.
Maybe we have real 4 Hp . A 90 nitro is rated 3.6 but again factory value.
Maybe we can speak about 3 real HP for a 90-then we 12s guys have 1 more which is real good.

just my 2 cents.

...exist something better than V-bar and women...

PM  EMAIL  GALLERY  Attn:RR  Quote
10-20-2009 05:02 PM  8 years agoPost 28
MrMel

rrProfessor

Gotland

My Posts: All  Forum  Topic

Dont know, I had both .90 electric & nitro of same machine, and I ran LOTS of more pitch on my E-machines, with less bogging, sure had ALOT more then addition 25% power.

Btw, that's what the efficency rating of the motor is, a motor output vs input, so 90% on a regular inrunner.
You can download graphs by the motor manufacturer or even tools to calculate yourself at what AMP for a certain motor (Scorpion Motor calc)

a HK4035-560 has about 89-90% eff at 5000watt in (so about 4450-4500 watt out)

(motors efficency is valid as long as it's operated within the voltage it was built for)

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

PM  EMAIL  GALLERY  Attn:RR  Quote
10-20-2009 07:59 PM  8 years agoPost 29
Justin Stuart (RIP)

rrMaster

Plano, Texas

My Posts: All  Forum  Topic

Its just funny with all these Watts ratings. Not to offend anyone but, you cannot just converte the watts to horsepower and then say the Heli has 6.6 HP.
Well, you CAN convert Watts to Horsepower, but that number does not necessarily mean anything in real life.

Don't auto manufacturers use something called Brake Horsepower? I guess the equivalent would be something along the lines of blade grip horsepower? How are real helicopters rated?

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

PM  EMAIL  GALLERY  Attn:RR  Quote
10-20-2009 08:04 PM  8 years agoPost 30
MrMel

rrProfessor

Gotland

My Posts: All  Forum  Topic

Still, brake horsepower for a electric is Watt * Efficency, then minus a few % for ESC, and gearing etc, but its up there still...

No matter how you twist it, electric's are that more powerful.

For even more details, shoot a PM to some of the motor manfactures, they can explain it even in more detail then I can.

(I actually planned on building a Dynometer once, until I realized I needed something of the size of a Truck's brake system to build it just to test my helicopters... )

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

PM  EMAIL  GALLERY  Attn:RR  Quote
10-21-2009 04:25 AM  8 years agoPost 31
misskimo

rrElite Veteran

Alaska 17 years, before mississippi for 31y

My Posts: All  Forum  Topic

Janis
Senior Heliman
Location: Århus, Denmark

My Posts This: Topic Forum Hi,

Its just funny with all these Watts ratings. Not to offend anyone but,
you cannot just converte the watts to horsepower and then say the Heli has 6.6 HP.
If you will have this value on the head the maingear will only last for a few seconds.
These are the peak value which goes thru the system. I dont know what
of those ratings goes to the heat and what is really comming to the head.
I have a 12s heli too so I know that we have a lot of more power then a 90 nitro, but for sure its not 6,6 HP.
Maybe we have real 4 Hp . A 90 nitro is rated 3.6 but again factory value.
Maybe we can speak about 3 real HP for a 90-then we 12s guys have 1 more which is real good.

just my 2 cents.
yeh! I agree with this, I have always said high peaks doesnt mean anything to me , a true HP is hard to get , an average is more like it I think. well with the nitro with a 3.6 HP. I wonder what its PEAK HP would be as far as torque. Power is Power right! HP rating for a nitro means its peak performance before it falls off its edge. if it does fall and torque goes up its worthless HP goes up too meaning bogging or slipping the ole clutch.
And Yeh! Electrics does seam to have an edge here that can be clearly seen. No drought about it! the instant power is where it has the advantage

PM  EMAIL  GALLERY  Attn:RR  Quote
10-21-2009 05:45 AM  8 years agoPost 32
MrMel

rrProfessor

Gotland

My Posts: All  Forum  Topic

yeh! I agree with this, I have always said high peaks doesnt mean anything to me , a true HP is hard to get , an average is more like it I think. well with the nitro with a 3.6 HP. I wonder what its PEAK HP would be as far as torque.
Peak HP would be 3.6HP, as there is no difference.
(the brake hp of a machine is measued at its peak range)

There is no magic, you have Gram/Watt and you have Torque (Bogging), there is no magical mystical parameters, Electric has instant recovery, Nitro has not.

But there is no such thing as "true hp".

A motor (electric or nitro) can me more or less suited for an application, (Torque) but aint change number of HP.
Changing fuel mix for sample does infact change HP.
Just like running bad batteries.

To get a exact comparsion, weight down a machine so you get exact same target weight on the nitro & electric, you will see the electric is just more powerful, lots of it.

However, in many conversion the electric often gets a bit heavier then its nitro brother, and weight does a HUGE difference.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

PM  EMAIL  GALLERY  Attn:RR  Quote
10-21-2009 06:01 AM  8 years agoPost 33
misskimo

rrElite Veteran

Alaska 17 years, before mississippi for 31y

My Posts: All  Forum  Topic

Tim Jones
Heliman
Location: Simi Valley, CA

My Posts This: Topic Forum Hey Guys,

That sound you hear in that video is indeed the Main
Gear stripping. It is a mod 1.0 15mm tall Gear, VS 10mm Stock mod 0.7 The Gear in that video was made of Glass filled Black Nylon. It is right on the edge of holding up to 11+HP peaks (8200 Watt peaks) however as you can see its still not adequate. I also have The same Gear made out of a Kevlar filled Nylon, it has better self lubricating properties, and also much higher Tensile Strength. If anyone stuck around at IRCHA and saw some of the flights I put on that Gear, you know it does not strip. Ive got approximatly 20-25 flights on the same Kevlar filled Nylon Gear, with out incident. Which is unprecedented with this much power, and the current Gear Train Design.

Ready to fly weight on this machine with, Castle ICE 160HV, 50-35 Vertigo motor, 6s 5000mah Thunder Power 45C's, 2s 2100mah Reciever pack is at 11lbs 15Oz. I realize this is a bit on the Heavy side, but when you consider the fact that you've got up to 11HP peaks, thats nearly 1 pound per horsepower. Couple that with a Fybarless rotor head and the machine feels far from too heavy in flight. Thats why its now commonly referrred to as "The BEAST" A fitting name if you ask me.
well what do you think of this peak Mel??? this claim is what I been talking about. too me this 11 HP is Bull if you know what I mean.
Well Peak HP from a nitro can hit peaks above its rated HP just like our electrics huh? my thinking tells me this. and like I said, electrics rule the skys

PM  EMAIL  GALLERY  Attn:RR  Quote
10-21-2009 06:46 AM  8 years agoPost 34
MrMel

rrProfessor

Gotland

My Posts: All  Forum  Topic

Electrics peaks because it can, nitro bogs instead.
Needed or not.

If electric wasnt recovering that fast it wouldnt peak either.

That said, our nitros will also differ in hp, cold weather and it outputs more power.

Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 2 pages [ <<    <     1     ( 2 )    >    >> ] 2036 views POST REPLY
HelicopterAlignT-REX 700N › Trex main shaft needs to be hardened
 Print TOPIC  Make Suggestion 

 10  Topic Subscribe

Sunday, January 21 - 12:48 pm - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online