Paul Tradelius

When To Remove Your Training Gear

Feb 12, 2012 No Comments

There is one that every flier either will, or already has, asked of themselves, although they might not even know it. And that question is: When should I remove the training gear from my helicopter? Over the years I have helped many people learn to fly helicopters, and it’s amazing how good they get and [...]

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New OS-105HZ Helicopter Engine

Jan 27, 2012 No Comments

This is the new OS-105HZ Helicopter Engine, with  DRS (Demand Regulator System), that was designed for precision aerobatic and 3D heli pilots to provide more power for their 90 size helicopters. As you know from my previous blogs, I’m running the OS90HZ in my Raptor 90G4, and it’s doing a great job. But I guess you [...]

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Raptor 90G4 Flight Tests

Jan 21, 2012 No Comments

At the flying field the G4 has a presence all it’s own with its carbon structure, bright canopy and all metal flybarless head and tail rotor. While setting up for initial flight tests a crowd gathered like a giant inspection crew pointing out all its new design features and quality parts. There were even comments [...]

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Raptor 90 G4 Setup Innovation

Jan 18, 2012 No Comments

Initial helicopter setup, for aerobatics and 3D flying, centers around having the servo arms and bellcranks square while the swashplate is level and the blades at zero pitch. Several after market tools have been around for some time to make this process both a little easier and more accurate. However, until now, we have never [...]

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Raptor 90 G4 All metal adjustable control arms

Jan 18, 2012 No Comments

I’ve never seen a helicopter kit come with its own servo control arms, but the Raptor 90 G4 does just that. Normally we install the servos of our choice and attach either stock control arms, or some after-market reinforced arms. Unfortunately both types of arms use splines to attach to the servo output shaft, which [...]

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Raptor 90 G4 Main Gear

Jan 18, 2012 No Comments

It’s not very often I have a lot to say about the main gear of a helicopter, but this one is special and of a unique design that we have not seen in the past. The Raptor 90 uses a helical main gear that has several features. First of all it’s made of Delrin, which [...]

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Raptor 90 G4 Head

Jan 17, 2012 No Comments

This Raptor 90 G4 has a lot of unique design features, with one being the all metal flybarless rotor head which is a nice combination of both beauty and a great design. You can just see the quality of construction in the photo, but what is not quite so obvious is its unique design. All [...]

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Valley View Cellmeter 7 Battery Checker

Jan 17, 2012 No Comments

There are no shortages of battery checkers on the market, but this Cellmeter 7 from Valley View (www.valleyviewrc.com) has a lot of great features I have not seen in one checker before. It’s easy and safe to use and can check LiPo/LiFe/Li-Ion batteries with 2-7cells, Nicd/NiMH batteries with 4-7cells and read out total voltage, total battery cell capacity [...]

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