Go Back  RCU Forums > RC Helicopters > RC Helicopter General Discussions
Reload this Page >

Wren MW44 Turbine into 44 Magnum.

Notices
RC Helicopter General Discussions Discuss RC Helis here. Nitro, gas, turbine and any make, model or brand not having its own specific forum below!

Wren MW44 Turbine into 44 Magnum.

Old 04-26-2009, 11:46 PM
  #1  
Chris Bergen
Member
Thread Starter
 
Join Date: May 2006
Location: Cassopolis, MI
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Default Wren MW44 Turbine into 44 Magnum.

I've got the first production Wren MW44 here, going to be putting it into our .90 size heli.

If it's cool, I'll post progress as we go.

The engine is only available prebuilt and test run by Wren, and is completed as shown. Absolutely beautiful to behold.
Attached Thumbnails Click image for larger version

Name:	Hf99312.jpg
Views:	249
Size:	66.9 KB
ID:	1187758  
Old 04-27-2009, 11:26 AM
  #2  
DKTek
Junior Member
 
Join Date: Apr 2009
Location: Melbourne, FL
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Wren MW44 Turbine into 44 Magnum.

Very nice. I should be on the list soon. Mine is for a 700 Rex but I look forward to your install and experiences. That little turbine needs a Coke can next to it for size comparison. I can tell from the festo fittings that it is small. Thanks for sharing.
Old 04-28-2009, 01:45 PM
  #3  
rotor09
Senior Member
 
Join Date: Apr 2009
Location: GWN, BC, CANADA
Posts: 365
Likes: 0
Received 1 Like on 1 Post
Default RE: Wren MW44 Turbine into 44 Magnum.

I have always been interested in turbines, but I want them to be more maneuverable then the current lot that I have seen. I have a Century Predator Gas heli, that really has turned out to be a great 3D gasser.

I had heard they had been demonstrating some Wren Turbine versions of them at different shows in Europe for a number of years. So I checked on youtube, and found a number of pretty impressive smooth 3D flight videos by a fellow named Ian Contessa from the UK. I understand there has been the complete conversion kit over there that Ian uses in his now for a good number of years.

Here is one of his videos from 2007 (check out the flying from about the 2:45 minute mark):

http://www.youtube.com/watch?v=CyeesRdfxCY

I understand he pushes it harder now. I understand there has been the complete conversion kit available over there fro the Predator Gas heli which is what Ian has been using in his now for a good number of years. I certainly think it would be worth getting similar type of turbine helis here. The USA seem to be lagging by a number of years in that area.
Old 04-28-2009, 10:17 PM
  #4  
Chris Bergen
Member
Thread Starter
 
Join Date: May 2006
Location: Cassopolis, MI
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Wren MW44 Turbine into 44 Magnum.

How is this for manueverability? http://bergenrc.com/uploads/GregAlde...sB-Day2007.wmv

We've been using the MW 54 Heli for over 3 years in our Intrepid Turbine. Apparently I've been lax in getting that word out.

This engine is the new MW 44 Heli, that will be going into our 44 Magnum Heli, swinging 720 blades at 1950 HS for serious 3D Turbine Action.

Old 04-29-2009, 08:10 AM
  #5  
Chris Bergen
Member
Thread Starter
 
Join Date: May 2006
Location: Cassopolis, MI
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Wren MW44 Turbine into 44 Magnum.

A few more pics of the engine, and a comparison to the MW54 Heli
Attached Thumbnails Click image for larger version

Name:	Om32143.jpg
Views:	96
Size:	68.6 KB
ID:	1188895   Click image for larger version

Name:	Pk30210.jpg
Views:	483
Size:	40.4 KB
ID:	1188896   Click image for larger version

Name:	Jo31867.jpg
Views:	133
Size:	38.9 KB
ID:	1188897  
Old 05-01-2009, 03:36 PM
  #6  
Chris Bergen
Member
Thread Starter
 
Join Date: May 2006
Location: Cassopolis, MI
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Wren MW44 Turbine into 44 Magnum.

More comparison pics,

Wren 54, Wren 44, and Jetcat SPH-5.

Attached Thumbnails Click image for larger version

Name:	Yw67028.jpg
Views:	623
Size:	55.5 KB
ID:	1190214   Click image for larger version

Name:	Fb88056.jpg
Views:	314
Size:	54.4 KB
ID:	1190215  
Old 05-01-2009, 08:17 PM
  #7  
DKTek
Junior Member
 
Join Date: Apr 2009
Location: Melbourne, FL
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Wren MW44 Turbine into 44 Magnum.

That works too, thanks Chris!
Old 05-26-2009, 07:46 PM
  #8  
Chris Bergen
Member
Thread Starter
 
Join Date: May 2006
Location: Cassopolis, MI
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Wren MW44 Turbine into 44 Magnum.

Some progress...
Attached Thumbnails Click image for larger version

Name:	Pn35248.jpg
Views:	85
Size:	37.5 KB
ID:	1206670   Click image for larger version

Name:	Bx74043.jpg
Views:	131
Size:	38.9 KB
ID:	1206671  
Old 06-20-2009, 11:33 PM
  #9  
Chris Bergen
Member
Thread Starter
 
Join Date: May 2006
Location: Cassopolis, MI
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Wren MW44 Turbine into 44 Magnum.

It flies!! 

http://www.youtube.com/watch?v=tA3jOFELmEo
Old 06-21-2009, 11:52 AM
  #10  
N1pster
Senior Member
 
Join Date: Jan 2008
Location: Newcastle Upon Tyne, UNITED KINGDOM
Posts: 203
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Wren MW44 Turbine into 44 Magnum.

Flies very nicely to

Q. Do the lateral exhausts effect stability in any way?
Old 06-22-2009, 12:40 PM
  #11  
Chris Bergen
Member
Thread Starter
 
Join Date: May 2006
Location: Cassopolis, MI
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Wren MW44 Turbine into 44 Magnum.

The Wren 54 also has the exhaust coming out sideways, albeit with a slightly rear cant to the exhaust, but no, we've never seen any issue with the sideways exhaust.

With a 2 stage system like the Wren Heli series or the JetCat SPH5, most of the thrust is used up powering the second stage.. All that is left is some residual thrust, not enough to really affect the flight.

The single stage heli engines like a PHT3 from Jetcat DOEShave a high thrust component, and typically uses a Bifurcated exhaust, blowing it outto each sideas well. Not having flown one of these types Icannot say that it affects it or not, but Ihave not HEARDanyone comment on it.

We flew the 44 Magnum at the Winamac INFunfly this weekend, putting it through the paces. Look for video to be up soon.

Old 07-02-2009, 08:09 PM
  #12  
Chris Bergen
Member
Thread Starter
 
Join Date: May 2006
Location: Cassopolis, MI
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Wren MW44 Turbine into 44 Magnum.

Video of aerobatic and power settings testing...

http://www.youtube.com/watch?v=IullKKtZl4M

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.