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Xieda 9958 with Solo Pro Head

Many people like the unique head design of the Nine Eagles Solo Pro and Bravo SX. With the flybar on top, it gives it a unique, stable flight characteristic…yet maintain agility and does nice tight turns. So here’s a simple mod. Take the Solo Pro head and shaft. Drill a hole for the shaft collar and then cut about 7-8mm from the top. Drill a hole to secure the Solo Pro head. Easy peasy.

My initial impression is that it flies really well. I need to do a more thorough flight test as it’s too late to do that at the moment. I just wanted to share since this question has popped up to see if this is even possible. I’ll update this post with more of my thoughts and refinements and photo later. Until then, enjoy…

18 Comments on Xieda 9958 with Solo Pro Head

Xieda 9958 RX versus Solo Pro RX

Someone on RC Groups mentioned that they wanted to use the low cost Xieda 9958 RX board as a replacement for the Solo Pro and Bravo SX boards. Here’s a side by side comparison photo for your modding/brainstorming purposes.

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E-Flite Blade MLP4DSM Pinout

I am working on hacking the MLP4DSM TX module into the Turnigy 9x. This will allow for Spektrum DSM2 capability so I can control my helicopters using the DSM2 protocol. I will write up a more detailed post once I get all the details worked out. I got it working this morning and I was able to bind and control my mSR using the Turnigy 9x. I just need to tidy things up and come up with some step by step instructions.

Here are the pin outs from the MLP4DSM board. You’ll need to supply it 3.3v using a regulator.

Categories: Helicopter, Turnigy 9x
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Alternate Xieda 9958 body colors?

Interesting development. It appears that in some market, the Great Wall Xieda 9958 and 9998 has rebranded cousins…

Here’s a couple of Nincoair Micro Evo 190 that appears to use the same canopy and parts as the Xieda 9958, which means that the canopy will fit the Xieda 9998 as well.

Unfortunately, these units are found from an overseas online shop: http://shop.lindinger.at.

Categories: Helicopter, Xieda 9958
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Turnigy 9x – Xieda 9958 Throttle Curve

I recently purchased a Turnigy 9x and am in the process of setting up my preferred throttle curves for it. So I figure I’d share.

From my understanding, being able to set your throttle curve is the benefit of setting up the initial profile as a “heli” instead of “acro”.

To get to the throttle curve section of the menu, hold down the menu button. Select Settings. Then select THR/CV.

Currently, I have two different throttle curves link to my [Aux 3] F.Mode switch.

Owners of the 9x will know that the F.Mode switch can be toggle between three settings: N, 1, 2 correlating to Norm, ID1, ID2 in the menu.

Initially, I have a normal, more linear throttle curve set for the N switch position:

But I found that I like to fly with the ID1 position. It has the following curve set:

I think I will make the ID1 settings my Normal in the future. My ID2 position currently has a rudder to elevator mix that I am experimenting with. Being able to quickly switch between different settings in mid flight allows you to do a A:B comparison and makes it easier to find the combination of settings that fits your flying style.

I’ll post more as I complete setting up and fine tuning the Turnigy 9x with the Xieda 9958.

Side note: You notice that the stock 9x firmware gives you the ability to adjust 5 different points on the curve. Similar to the Spektrum family of TX. This is one example of where the custom firmware like Er9x shines. They allow 9 points on the throttle curve. For those who need absolute control. Obviously overkill for a micro heli like the 9958…but it’s one example of the power the Turnigy 9x posses with a custom firmware flash to it.

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MLP4DSM DSM2 Module versus Xieda 9958

The range on the Xieda 9958 isn’t that great. If you open up the transmitter, you’ll notice that there is no antenna wire connected to the 2.4ghz module. For comparision, take a look at the inside of the E-Flite MLP4DSM transmitter.

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Alternative Battery Mount Location

I am currently testing out how mounting the battery lower affects the flight characteristics of the 9958. It seems like it’s improving the pivot on bank turns…but I need further testing and/or feedback from others.

Categories: Helicopter, Xieda 9958
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New E-Flite Blade mSR X

The folks at E-Flite just released a new fix-pitched micro heli. It’s similar to the popular mSR except it’s flybarless courtesy of the AS3X Digital Flybarless system that’s already in used on the mCP X.

A promotional shot of the new Blade mSR X

The new mSR X is touted to be a intermediate step up from the mSR, and not a replacement. Along with the upgrade to flybarless, they fixed some of the annoying things that initially plagued the mSR. Like the new cage around the tail motor which will help prevent the motor cap from popping off and destroying the brushes.

The mSR X comes with new 150mAh LiPo. Hopefully they are good quality cells, because it’s actually priced pretty reasonably at $3.99.

New E-flite 150mAh LiPo

The mSR X is scheduled for a mid December 2011 release. Horizon Hobby will be demoing this new heli at the iHobby Expo being held this week in Chicago. I personally can’t wait to see how it flies and the mods that will inevitably come up for it.

Categories: Helicopter
11 Comments on New E-Flite Blade mSR X

9958 with Carbon Fiber Main Shaft

Fabricated a carbon fiber main shaft for the 9958. Here’s the stock 9958 weight before and after the carbon fiber shaft upgrade.

The stock weight without the battery is above. The carbon fiber upgrade 9958 is the photo below.

The main motor has a lift of about 42g. So shaving a gram off the flight weight will allow the motor to essentially be 7% stronger. So it’s every gram counts with these micro helis!

Top photo is the 9958's stock weight. Bottom photo is with a CF main shaft.

Here’s a video with it flying. Unfortunately the battery was mostly gone by the time I thought of turning on the camera.

Categories: Helicopter, Xieda 9958
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Blade mSR Pinion to Main Gear Ratio

Someone on the RC Groups forum wanted to know the gear ratio of the Blade mSR so they can possibly use them on another RC vehicle. I took a picture and figured I’d share here.

Blade mSR Pinion and Main Gear

Categories: Blade mSR, Helicopter
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