RunRyder RC
WATCH
 3 pages [ <<    <    ( 1 )     2      3     NEXT    >> ] 4873 views POST REPLY
Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › turbine helicopter build advice
12-25-2014 03:19 PM  5 years ago
Topic Vote0Post 1
wc_wickedclown (RIP)

rrProfessor

long beach calif

MyPosts All Forum Topic
turbine helicopter build advice
where would i find a turbine motor for a 600 size helicopter ?
Insha Allah made in america
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
12-25-2014 04:53 PM  5 years ago
balsapro

rrVeteran

Gallatin,TN

MyPosts All Forum Topic
wren 44 gearbox fits a 90 size bolt pattern... might be able to shoe horn it in but Im not sure bolt in turbine is available on a 50 size heli.Build the Best, Fly the Best, Crash the Best
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
12-25-2014 05:32 PM  5 years ago
wc_wickedclown (RIP)

rrProfessor

long beach calif

MyPosts All Forum Topic
thank you
i just found this
http://www.jetcatusa.com/hp5.html
Insha Allah made in america
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
12-25-2014 06:13 PM  5 years ago
ssmith512

rrKey Veteran

Indianapolis, IN USA

MyPosts All Forum Topic
HP5 is way too big for a 600.Steve
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-25-2014 09:21 PM  5 years ago
mcfast

rrKey Veteran

Quebec Quebec Canada

MyPosts All Forum Topic
Thats for a 800 size helicopter.P.S. sorry for the spelling or the grammar I am dyslexic!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-25-2014 09:34 PM  5 years ago
JEEPWORLD2002/2

rrKey Veteran

Blue Bell, Pa

MyPosts All Forum Topic
I would base it off a n7 or trex 700 swinging 680-720 u want a 12 mm main shaft using a turbine power imho

Look at this n7 turbine with a wren 44i

https://rc.runryder.com/t766315p1/
Trex600n,Trex500,MR25,MikadoLoGo5003d/KDE,Goblin 380XNova,CastleCreations,Ys,JR XG8,Tags Mini XBus Dmss//FAA# FA3NYC9TAP
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-25-2014 10:11 PM  5 years ago
wc_wickedclown (RIP)

rrProfessor

long beach calif

MyPosts All Forum Topic
thanks so i guess 700 to 800 size is best.
and nice system

Insha Allah made in america
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
12-25-2014 10:23 PM  5 years ago
ssmith512

rrKey Veteran

Indianapolis, IN USA

MyPosts All Forum Topic
What you pictured is for a jet. You need a two stage system for a heli application. Like the 44i.Steve
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-25-2014 10:37 PM  5 years ago
wc_wickedclown (RIP)

rrProfessor

long beach calif

MyPosts All Forum Topic
wonder whats the price for the hp5 ?Insha Allah made in america
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
12-25-2014 11:04 PM  5 years ago
ssmith512

rrKey Veteran

Indianapolis, IN USA

MyPosts All Forum Topic
$4000 and up.Steve
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-26-2014 03:30 AM  5 years ago
Dan Minick

rrKey Veteran

Columbus, WI

MyPosts All Forum Topic
The smallest heli turbine made will fit a 700 size model. Any smaller of a disk and its not going to work so well.The HP5 is around 5k new. Made for a large scale birdTeam Synergy, Team FBL Rotors-------if its not broke...it will be!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-29-2014 05:51 AM  5 years ago
Calil

rrApprentice

Brazil

MyPosts All Forum Topic
If you are looking for a pod and boom light 3d helicopter then trex 700 or n7 synergy or bergen with a Wren 44i is your choice.

If you are looking for a scale aplication then Jetcat PHT2 is what you are looking for. It's so small (I own one but not built yet).

I'm considering build an EC 145 600 fuselage size with it.

Watch at YouTube

Watch at YouTube

SHARE  PM  EMAIL  Attn:RR  Quote
12-29-2014 04:59 PM  5 years ago
wc_wickedclown (RIP)

rrProfessor

long beach calif

MyPosts All Forum Topic
thank you CalilInsha Allah made in america
SHARE  PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
12-29-2014 10:33 PM  5 years ago
Calil

rrApprentice

Brazil

MyPosts All Forum Topic
You are welcome. Youtube links fixed!
SHARE  PM  EMAIL  Attn:RR  Quote
12-30-2014 04:48 AM  5 years ago
Machinehead01

rrVeteran

Lower Michigan

MyPosts All Forum Topic
I have been watching...
This thread with interest, as I too would like to build a turbine machine. It's too bad nobody is making any turbo shaft engines. They are all airplane engine conversions and require a second stage to power the transmission. Jakadofsky, is the only company that is even coming close, and yet they as well are a converted airplane engine. You need the long finned gas turbine wheel to make actual shaft horse power. A true turbo shaft engine would not need the second stage to drive the gear box as the center shaft is used to drive the gearing, usually through a planetary reduction to the main gearing, meaning less weight, smaller foot print, more fuselage room. It also makes more power and would be way more responsive then what is out there right now due to the direct connection to the engine itself. More power per unit of fuel used as well. Not as much residual thrust to deal with either. You could dump out the back of the machine and not have to worry as much about the inherent drift that an airplane (jet style) turbine engine WILL cause.
Pretty ripe market for the right company if you ask me.

Tom
"You judge according to the flesh; I am not judging anyone."
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-30-2014 12:50 PM  5 years ago
Dan Minick

rrKey Veteran

Columbus, WI

MyPosts All Forum Topic
It also makes more power and would be way more responsive
Take it from someone who has had several turbine helicopters, the engines are plenty responsive. And being able to stick over 7hp in a 90 size nitro is pretty impressive in my book. I think almost Everyone runs a flat throttle curve anyways. As for residual thrust. The way the Wren 44 is set up there is NO noticeable thrust drift. If every option in the world was available that would be great. There is simply not enough money to be made developing something like you demand
Team Synergy, Team FBL Rotors-------if its not broke...it will be!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-30-2014 01:13 PM  5 years ago
MattJen

rrElite Veteran

UK

MyPosts All Forum Topic
there is a lot of difference between the single stage and two stage,
The Jako turbines are big as they are single stage and a lot of scale flyers have to get over the thrust that is produced as it pushes the model down or forwards so you are holding in back stick.. single staged turbines are almost twice the size of the smaller 2 stage yet put out the same power..

The 2 stage is not connected, so all thrust generated from the gas generator first stage is used to drive the second stage, having flown both types I prefer the 2 stage, but the problem with them is how to direct the exhaust in the fuse without heat building up.. that is where the single stage win, as the exhaust comes straight out the back and exits the fuse.

On a two stage the exhaust is in the middle so most people use extensions and exit through the door as there is not enough room to do a 45degree bend and then exit via rear of fuse as per full scale. The danger with this bend is it can create hot spots within the fuse so it starts to melt and delaminate.

If you wanna get into scale my recommendation would be fly it as pod and boom, get used to the extra weight and the sound as it is at first intimidating. then once you have got comfortable flying it, move it into a scale fuse..

A true turbo shaft engine would not need the second stage to drive the gear box as the center shaft is used to drive the gearing,

The trouble is with this, you are adding complexity on a miniature scale, and the cost of the engine would go up incredibly in price because of the engineering involved..
Turbines are dying as electric is just as and in some cases more powerful, today the only reason you have a turbine is for sound and smell, but even now you can get a sound chip which sounds like a turbine.. and it probably wont be long until someone works out the JET A1 smell LOL..

for scale I still love the smell and sound.. but I stood next to a pilot with 12k electric motor, the power was immense and no lag.

Happy new year all.
All The Best
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-30-2014 05:45 PM  5 years ago
Machinehead01

rrVeteran

Lower Michigan

MyPosts All Forum Topic
Like I said...
The complexity is in the existing setups. Look up the turbo shaft engine. The very name implies what it looks like and functions like. Less complex then what is out there now. You don't need the planetary gear set. You could do as that Jetcat does in the picture, belt or gear drive off of the front shaft. A turbo shaft engine removes the buffer zone between the gas turbine and the driven (2nd stage) turbine. There is lag between the two which means less efficient. The only reason to build this way is simplicity, period!
I have seen both of these turbines used and believe me the turbo shaft is way more responsive of the two. Plus it needs not spool so high to retain the driven force of the engine, IE more power made per unit of fuel used.
Again the Jak engine is a converted airplane engine not a TRUE turbo shaft.

Tom
"You judge according to the flesh; I am not judging anyone."
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-30-2014 05:54 PM  5 years ago
Dan Minick

rrKey Veteran

Columbus, WI

MyPosts All Forum Topic
I don't think anyone is disagreeing with you about the design being better for helicopters. There just is not a NEED.Team Synergy, Team FBL Rotors-------if its not broke...it will be!
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
12-30-2014 06:14 PM  5 years ago
Heli_Splatter

rrElite Veteran

USA

MyPosts All Forum Topic
How many turbine helicopter units are sold each year? can anyone venture a guess?

I would sure love to have one, but it seems to be a steep hill to climb getting into it. I would think buying a used machine would be the best entry point... then build.
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 3 pages [ <<    <    ( 1 )     2      3     NEXT    >> ] 4873 views POST REPLY
Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › turbine helicopter build advice
 Print TOPIC  Make Suggestion 

 9  Topic Subscribe

Sunday, March 29 - 9:16 am - Copyright © 2000-2020 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online