RunRyder RC
 9  Topic Subscribe
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 2614 views POST REPLY
HomeTurbineAircraftHelicopterTurbine Helicopters › 50 size turbine
02-12-2006 09:17 PM  12 years agoPost 1
paul007

rrNovice

norfolk uk

My Posts: All  Forum  Topic

HI I HAVE A WREN 54 AND WOULD LIKE TO GET A 50 SIZE HELICOPTER AS I HAVE A 50 SIZE AIRWOLK KIT CAN I CONVERT MY SCEADU EVO TO TAKE A TURBINE

PM  EMAIL  Attn:RR  Quote
02-12-2006 09:44 PM  12 years agoPost 2
PETER ROB

rrElite Veteran

Devon UK

My Posts: All  Forum  Topic

50 size turbine conversion
Paul,
You have the Wren Turbine,I do not think you shauld try it in anything less than gasser or 70/90 size mechanics
Each airframe is designed around a given power unit
Turbines deliver power/ torque greatly in excess of everything out there, even mechanics developed for turbines
So think hard before you unleash a tubine in a Sceadu
Peter R

PM  EMAIL  GALLERY  Attn:RR  Quote
02-12-2006 09:55 PM  12 years agoPost 3
ba board

rrVeteran

England

My Posts: All  Forum  Topic

Go for it. As an engineering project it sounds really good.Even if it doesn't work you will probably have learnt quite a lot.
I am not realy sure what difference it makes what you use as a power source providing the airframe can lift the weight and the head turns at the required speed. In the case of a free turbine drive, is there any relation to torque and airframe? as there is no mechanical connection between the power unit and the head.
Is it not the same between airframes that are designed for both glo and gas? I realise that the power from a turbine is greatly increased but I hope you get my drift.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-12-2006 10:05 PM  12 years agoPost 4
TURBINE MASTER

rrApprentice

SW ENGLAND

My Posts: All  Forum  Topic

Hi All
Wren MW 44 would be better if you could weld a gearbox to it

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-12-2006 10:26 PM  12 years agoPost 5
TURBINE MASTER

rrApprentice

SW ENGLAND

My Posts: All  Forum  Topic

No it's not but would that matter in the sceadu with the power in reserve.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-13-2006 12:35 AM  12 years agoPost 6
hayabusa

rrApprentice

uk

My Posts: All  Forum  Topic

PAUL 007 NO! Do not do this its dangerous buy the correct model!!!

PM  EMAIL  GALLERY  Attn:RR  Quote
02-13-2006 09:48 AM  12 years agoPost 7
Sara

rrApprentice

Yorkshire, England

My Posts: All  Forum  Topic

We would not recommend you to use a 50 size model with a turbine. You would have problems installing a MW54 helicopter engine into such a small model and if you succeeded it would be very over-powered. All the turbine conversions have been done on 90 size models.

Sara Parish
Wren Turbines Ltd

PM  EMAIL  Attn:RR  Quote
02-13-2006 10:37 AM  12 years agoPost 8
coolice

rrKey Veteran

Northamptonshire, England

My Posts: All  Forum  Topic

Hey,

I concur with what is being said above, even in a 90 airframe the MW54 is capable of delivering more power than the frame was originally intended to take. But as the model is bigger to start with and everything is so tuneable it can be carried off in a safe, controlled manner.

Todays 90's are designed to accept engines that deliver up to 4hp, these modern turbines can provide upto 7~8hp easy so you can see the problems which could come about.

As for a MW44 made into a heli setup, I am working on it. Each time I see WREN I keep dropping hints. Just think of a 90 model with a lighter weight turbine fitted less fuel to.... yum!
.

Ian Contessa
Team Robbe SchluterUK
Midland Helicopters

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-13-2006 10:44 AM  12 years agoPost 9
TURBINE MASTER

rrApprentice

SW ENGLAND

My Posts: All  Forum  Topic

Hi
My thoughts also come on Sara MW 44 with a gearbox. How long?????

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-13-2006 11:04 AM  12 years agoPost 10
Sara

rrApprentice

Yorkshire, England

My Posts: All  Forum  Topic

We know that a MW44 size turbine would be very popular for helicopters, as it would not only give a lighter installation in the 90 size models but would enable the 60 size models to be used.

However, it will be some time before the MW44 helicopter engine is available. The smaller the engine, the more difficult it is to build successfully, so it is not an easy engine to "mass-produce". There is a huge demand for the 44 as a jet (thrust) engine and despite great efforts we can only just keep up with the orders - there is always a waiting list.

However, the more we make, the better we get at it, and one day we hope to produce a MW44 helicopter. Not yet though - sorry, Ian!

Sara Parish
Wren Turbines

PM  EMAIL  Attn:RR  Quote
02-13-2006 11:11 AM  12 years agoPost 11
coolice

rrKey Veteran

Northamptonshire, England

My Posts: All  Forum  Topic

Ah thats ok mummy, I'll wait patiently

In the big scheme of things it's just good to know the technology is coming along though and in the not to distant future this is the kind of thing we could end up with.
.

Ian Contessa
Team Robbe SchluterUK
Midland Helicopters

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-13-2006 12:29 PM  12 years agoPost 12
Bell Bloke

rrKey Veteran

UK

My Posts: All  Forum  Topic

hmmm...50 sized turbine heli sounds good, and I'm all up for a bit of home grown innovation and free thinking but, the disc loading would be stratospheric!! Also.... it would auto like a TV set being thrown from Kieth Richards penthouse suite hotel room window.
Not good.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-13-2006 01:52 PM  12 years agoPost 13
MattJen

rrElite Veteran

UK

My Posts: All  Forum  Topic

Hi Ian (coolice)

Hope you are well, without hijacking this thread, how much are you looking at for a wren nowadays ? and adding it to a predator ?

I currently have a jetcat turbine within an EC135, havent flown it yet, like anything waiting for the right weather!!!! ie wind under 15mph!

Regards

to the misses and see you at Leicester for seasoner opener ?

Matt Jenner

All The Best

PM  EMAIL  GALLERY  Attn:RR  Quote
02-13-2006 04:38 PM  12 years agoPost 14
Flying Tivo

rrKey Veteran

Monterrey,NL,Mexico

My Posts: All  Forum  Topic

Thunder tiger makes a small turbine, also SWB TURBINES
SWB makes the mamba turbine

Thunder tiger under engines you find jet engine.

Felipe

If life throws at you lemons......Squirt some lemon juice in the eye of your enemy!!!!

PM  EMAIL  GALLERY  Attn:RR  Quote
02-13-2006 05:38 PM  12 years agoPost 15
Sara

rrApprentice

Yorkshire, England

My Posts: All  Forum  Topic

Jet (Thrust) turbine engines and Helicopter turbine engines
The SWB Mamba is a jet turbine, not a helicopter turbine. I'm not sure if it is in production any longer. The website you have linked to doesn't appear to have been updated since 2003, as it mentions forthcoming Jet Events in that year.

The turbine on the Thunder Tiger site is also a jet engine and nobody has ever seen one in use. The information has been on the site, unchanged, for a number of years. The text refers to the JPX T-240 which was one of the very first model jet engines and has been out of production for some years. They claim that the engine has a thrust of 12 pounds, weighs 3.7 pounds and is over 12 inches long. This does not compare well with modern small jet engines which produce 14 pounds of thrust at half the weight and size, so it seems unlikely that this engine will go into production.

Neither of these engines would be suitable for helicopters. For helicopter use a turbine engine has to be modified either by taking power from the shaft, using belts and gears, or by adding a second stage.

Sara Parish
Wren Turbines

PM  EMAIL  Attn:RR  Quote
02-13-2006 05:47 PM  12 years agoPost 16
MattJen

rrElite Veteran

UK

My Posts: All  Forum  Topic

Hi Ian (coolice)

What happend to the post you posted up ? on the wren

it has disapeared ! doh!!!!!! i was going to write down the bits,

All The Best

PM  EMAIL  GALLERY  Attn:RR  Quote
02-13-2006 05:47 PM  12 years agoPost 17
coolice

rrKey Veteran

Northamptonshire, England

My Posts: All  Forum  Topic

Hey Matt,

Yes thank you mate I am keeping well and busy to a degree. Not dodging the flu bugs floating around so well, as is the other half to but other than that we are well.

*It seems I cannot post in this forum prices on items I am involved with, I replied earlier and it got removed!
Not that I'd done anything different to what someone else would/could do as anyone can quote prices from another website.
So for those prices mate you will have to go to WREN's web site for them. Alternatively you can PM me for a private chat, supposedly.*

The EC135 is a bit of a beast, I have a friends 10% built IC version in my workshop that he wants to sell and even without the tail section fitted it's big. Lovely looking machine and in the configuration you have sounds great to.

I'm pretty much the same as you, waiting around for good weather but still flying in stupid winds to get my model fix. There are some funny photo's of me floating around wearing an all-in-one ski suit to brave the cold. Look silly without snow, but atleast I'm not turning to an icicle.

Should be at Leicester as planned, minus any practice I am sure while I await a part & the return of one of my YS's, but I'll be there to welcome in the season.

See you soon buddy.
.

Ian Contessa
Team Robbe SchluterUK
Midland Helicopters

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-13-2006 05:50 PM  12 years agoPost 18
MattJen

rrElite Veteran

UK

My Posts: All  Forum  Topic

whats going on

first it was , then it wasnt now it is back

All The Best

PM  EMAIL  GALLERY  Attn:RR  Quote
02-13-2006 05:52 PM  12 years agoPost 19
coolice

rrKey Veteran

Northamptonshire, England

My Posts: All  Forum  Topic

Hehehe, I'm getting censored mate
.

Ian Contessa
Team Robbe SchluterUK
Midland Helicopters

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
02-13-2006 06:07 PM  12 years agoPost 20
1275mini

rrKey Veteran

Wirral North West U.K.

My Posts: All  Forum  Topic

Hey
Ian you know what happens next

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 2614 views POST REPLY
HomeTurbineAircraftHelicopterTurbine Helicopters › 50 size turbine
 Print TOPIC  Make Suggestion 

 9  Topic Subscribe

Monday, June 25 - 5:05 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online