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HomeTurbineAircraftHelicopterTurbine Helicopters › Just can't decide between the Wren 44 or the PHT2
03-12-2014 09:01 AM  4 years agoPost 1
Calil

rrApprentice

Brazil

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Simply as the title says. Over 6 months passed since the turbine idea came up and I just can't decide between this two turbines.

I would like to go scale in the future but getting the Wren 44 here in Brazil is absurdly easier to me.

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03-12-2014 02:04 PM  4 years agoPost 2
helifinance

rrNovice

Royal Oak, MI

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What is the application? Details, details, details!

Ray

N5c TT | Forza 700 | Bell 430 Turbine

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03-12-2014 05:11 PM  4 years agoPost 3
Calil

rrApprentice

Brazil

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Someday I'd like to fly a scale turbine heli. But it's so damn hard to buy a PHT2 that I'm thinking going wren. At least here are a few T-rex 700 flying with it and a T-rex is easy to setup and buy parts.

But the PHT2 is amazing how it turns things real (turbine placement). I would set it in a BK117 fuselage.

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03-12-2014 05:40 PM  4 years agoPost 4
helifinance

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Royal Oak, MI

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There are a few folks on here but I'm thinking call Joe at East Coast Vario and talk it through with him. Or maybe you could look for a used one updated by the factory.

I'm new to scale so these are just some suggestions. However, Joe has been super helpful to me when I had similar questions.

Ray

N5c TT | Forza 700 | Bell 430 Turbine

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03-15-2014 09:49 AM  4 years agoPost 5
airplanejunkie

rrApprentice

Riverview, Mi.

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Boy the decisions !
Hello. I have had the pleasure of owning both of these powerplants. I currently am flying a Vario Allouette ll with the PTH-2. I first started with the Bergen Magnum / Wren 44 which performed flawlessly. I had a strong desire towards a more semi scale type model. Because of the exhaust location of the Wren 44 I could not find an acceptable way for a suitable scale application. I sold the Magnum and purchased the Allouette. This not an exact scale model but certainly much more to my personal liking. The PTH-2 has been flawless through about 20 hours of flight time. I at first questioned the belt drive system but much to my delight the power unit and belt systems show absolutely no sign of any use or wear. I love the size of the model as it is very easy to transport and move around. The unit is Kero start and has been flawless except for things I have done incorrectly. The rear facing exhaust and the forward thrust it provides has been a little problematic but I have solved these issues with some minor exhaust modifications. I have changed from 4 servos at 90' to 3 at 120' and employ the use of a Beast X controller that has made this model fly like a dream. I fly the three blade head to add to the realism. My personal recommendation would be that if you want a scale ship go to the PTH-2. You are welcome to write me here and I will be glad to answer anymore questions you may have. Dave George AMA5129 RW2500. Almost forgot. This is a 50 hour TBO engine which is an added plus!

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03-15-2014 04:38 PM  4 years agoPost 6
Calil

rrApprentice

Brazil

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helifinance

Thank you I'll contact east coast!

airplanejunkie

Thank you so much for your reply! That's exactly what I was looking for because I think exactly the same as you! I can't accept the position of the wren exhaust system also!

The big question I have to you is: Do you think the PHT2 performance acceptable? Becaus I watch videos (a lot) in youtube from both turbines, and the power difference is gigantic.

I do undestand that the Allouete will fly better than any bk117 or ec120 or bell with the pht2 because is much lighter.

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03-15-2014 11:48 PM  4 years agoPost 7
airplanejunkie

rrApprentice

Riverview, Mi.

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Just my reply.
Absolutely the power is acceptable. Even on a very hot summer day I have never felt uncomfortable. Being a heli modeler for 41 years you must be respectful of pitch settings. Remember your max pitch can only be of use if it does not overload the power source. All power systems have their own limitations. Know your power limitations and fly within them to your pleasure. My pitch settings that I use are: 0-low 6-mid 9-max. -3-low in throttle hold a setting that I have not had or needed to use. If I remember correctly 10' seemed to load the engine a little to much for my liking. It flies great and I love it. Ask More if you wish. If you get the pitch load curve above the power band on any model it doesn't work. Thanks, Dave

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