Hangar 9 35% Extra 260 ARF-Electric Conversion

[Splummer]

Yesterday, I purchased the latest Giant Scale ARF from Hangar 9 http://www.hangar-9.com/Products/Default.aspx?ProdId=HAN1000.
This model is reported to have excellent flight performance, and SUPER quick assembly.

The power system will be the newest Hacker A100 or A150 class outrunner, I will make the power decision once I get the model going. I will test C/G with batteries and motor once all other assembly/radio install is done. That way I can move things into optimum positions for both easy Battery changes and Performance.

I plan to post only the Highlights of the install, especially any Electric specific areas of the assembly.

-Sean

[Splummer]

I was pretty much shocked by the prefabrication of the elevators on this model, here's the deal.

Both stabs come pre-hinged , horns installed and gap sealed, with the servo cut outs ready!!!

Using the provided hardware, I installed recommended servos ( New DSJR8711-403oz torque! ) and linkages on both stabs in less than 30 Min!!

This is an unbelievable pre- fabrication, and with quality hardware especially for a Large Aerobat of this caliber. Really amazing....

-Sean

[kelvin]

This looks to be another great conversion. Thanks for sharing.

Kelvin

[mpope1]

Sean that plane is huge.......

[Splummer]

Like the horizontal stab, the wings are pretty much done.

Both wings come pre-hinged , horns installed and gap sealed, with the servo cut outs ready.

Using the provided hardware, I installed recommended servos (JR-DSJR87110)
Each wing uses 2 servos to a single aileron. The proper geometry for the linkages is provided and clearly described in the instruction manual. Additionally, a JR Match box is used for fine tuning of the servo pair.

This was the fastest Dual wing servo intall I have done, the fact that the instruction manual outlines the set-up with exact measurements makes it a breeze. (Even my 7yr old daughter helped with the install)

-Sean

[mexico]

I love the completeness of the ARF.The less I have to do the better. On the aileron linkages - if the ball links were installed on top of the aileron servo arms wouldn't the geometry of the setup be more linear?

[Splummer]

The Rudder comes with the hinges ready and A long wire is used to complete the rudder hinge, this allows for removal if required. A really nice feature that is typically not incorporated into ARF models.

The instructions indicate a single JR 8711 located in the tail will properly control the rudder, or a pull-pull arrangement can be installed. I chose the single 8711 servo option as it was very simple and quick. (about 15min to install the rudder and rudder servo!!!)

[blucor basher]

Sean, is the one Mark flew in Az last month? Very impressive. I forgot to ask you the specs at the time, can you post the power system basic info? Thanks!

[Splummer]

The stock Aluminum Gear weigh about 23oz. , although very robust, not great for an Electric conversion. I choose to find a cabon replacement.

I contacted Graphtech R/C- http://www.graphtechrc.com

They offered the Part# 1206 Carbon gear designed for this model. I also opted for a Carbon Wing tube from Graphtech.

Additionally, I contact PSP mfg -http://www.pspmfg.com/AirplaneProducts.html and purchased some Titanium axles.

The New gear and axles ended up at just under 13oz ( 10oz Savings!) and the Carbon wing tube was 3oz lighter than the stock Aluminum tube.

Total savings was 1 lb. using the after market parts.

-Sean

[Splummer]

On to the Reciever installation, following the recommendations of Team JR, I choose to use dual AR7000 Spectrum receivers with a direct Lipoly flight pack for each receiver. I have never done this before, however the New JR 8711 servos are rated for direct Lipoly power.

I DID NOT use a voltage Regulator on this set-up. I directly connect a Thunder Power 2S-2200mAh pack into each switch harness which feed directly in to each Sprectrum A7000 receiver.

The servos were connected basically split in half between the 2 receivers with the Right side Aileron/elevator/throttle and the Left side Aileron/elevator/rudder.

-Sean

[sun.flyer]

Sean, is the one Mark flew in Az last month? Very impressive. I forgot to ask you the specs at the time, can you post the power system basic info? Thanks!


I agree, definately an impressive setup.

I'm thinking Hacker A150 on 14s probably pulling 9000w plus.

Tim

[rcman]

Sean can you give us an idea of the battary tray you had to use?

[Splummer]

The Hacker A-100 Outrunner installation.

I always try to use as much of the orginal or prefabricated parts as possible when I do an ARF conversion. This kit included 2" stand-offs, bolts and blind nuts for the 100cc Gas engine.

I used the supplied 2" stand-offs and hardware to make a Firewall extension. The Firewall extension plate is a 1/2" thick piece of Aircraft Plywood. I then used some 1-1/2" PSPmfg. stand-offs from the Firewall extension to the actual motor mounting ears.

This method is the best for Mounting for Large outrunners as the loads are well distributed considering the strong gyroscopic forces of the motor/prop.

-Sean

[Splummer]

The cowling is provided with the mounting screws and blind nuts pre-installed. At first I thought this was really great, however upon closer examination I discovered the cowling was using only 4-40 allen cap screws.

I decided to change the 4-40 to 6-32 Nylon blind nuts. The process was easy, I simply knocked out he old 4-40 Blind nuts, and tapped the wood mounts using C/A to harden the wood prior to tapping.

-Sean

[Splummer]

At this stage the model is basically complete, with the exception of the Battery Tray. I have found that competely assembling the model with All components, leaving the Battery placement as the last item to ensure a proper C/G.

The batteries (4ea. 6s-5000mAh) were temporarily mounted in the stock fuel tank location, while the model was completely assembled and a C/G check was made. The batteries were moved around until the proper C/G was achieved. As it turns out the batteries ended up, right in front of the wing tube at the rear of the Fuel Tank mount.

At this point I fabricated a 1/4" lite Ply Battery tray, and epoxied it directly over the top of the Fuel Tank mount. I installed the velcro straps using C/A and wrapping them completely around the Battery Tray and original fuel tank mount. I also use a large amount of self adhesive velcro on the floor of the tray.

I have used this method on several models, and even if the model is subject to a very hard crash the Batteries stay put and are protected.

-Sean

[rcman]

Thanks Sean, this will be great infomation once Horizon get the 35% instock and ships it out to me ;). I can't wait to try this

Thanks again

David

[bsipro]

Hey Sean
this looks great I'm going to be doing the same setup on the H9 Sukhio. I have all the stuff on order motor should be here in 3-5wk the plane sometime next month.

[rthorne]

Sean:

Out of curiosity, how are you using two 2.4g receivers? I thought a transmitter could only bind to one receiver at a time? Do you turn both receivers on then the transmitter with the bind button pushed?

Interesting either way.

Rich

On to the Reciever installation, following the recommendations of Team JR, I choose to use dual AR7000 Spectrum receivers with a direct Lipoly flight pack for each receiver. I have never done this before, however the New JR 8711 servos are rated for direct Lipoly power.

I DID NOT use a voltage Regulator on this set-up. I directly connect a Thunder Power 2S-2200mAh pack into each switch harness which feed directly in to each Sprectrum A7000 receiver.

The servos were connected basically split in half between the 2 receivers with the Right side Aileron/elevator/throttle and the Left side Aileron/elevator/rudder.

-Sean

[Splummer]

Rich,

With the spectrum system it works just like using a single reciever, I simply turn on the Transmiiter first then swith on one, then the other receiver.

For binding, each receiver is bound to the same transmitter/model one at a time.

-Sean

[Splummer]

Skipped one step, Prior to final battery placement the ESC is mounted under the motor box. The MasterSpin has 4 mounting "stand-offs" that are used secure the ESC and provide cooling completely around the entire ESC.

This location is ideal as it is a natural area for airflow through the cowl front and out the cowling bottom. I have used this location on most of the Aerobatic type of models, and is every case it has proved to be the best location for cooling especially in the High ambient conditions here in Phoenix AZ.( +110F!!)

-Sean

[Splummer]

This plane has been flown about 60 times during the last few months, On each and every flight the POWER is amazing, of course the model flies great as well. Please keep in mind most of the Gas "100cc" guys are 27 to 27.5 DRY, no fuel. Every time is the same at the gas club.....WHAT THE @#%! is in that thing???

I believe this is one of the best all around 35% conversions that is simple and perfectly balanced. Typical flight times are 8 min. using mixed throttle (Only 60% is needed to sustain unlimited Vertical!) about 8000mAh are used on my 8 min flights.


Here is a Summary of the System:
Hacker A100-8 Brushless Outrunner Motor
Hacker MasterSpin 170amp ESC
12S-10,000mAh TP Extreme V2 Lipoly packs
27x12 Mejzlik "TH" Carbon Prop
JR/Spectrum 2.4gHz + All JR servos

Here are the Specs:
AUW ready to Fly - 28.5Lbs
Full throttle Current - 201Amps@43.2 volts
Full throttle Watts - 8,683 watts input
Full throttle Prop RPM - 7100 Rpm
Full throttle Thrust - 58 lbs static
Full Throttle Pitch speed - 77 Mph

-Sean

[DaveKan]

Hey Sean

I really like those numbers. That should rip.

When might your website get going.

Thanks Dave :)

[rcman]

Sean, did you do any extra cooling holes for the batterys, to allow air to flow through the fuse?

David

[diveredd]

Nice build! how are the Deans holding up? Aren't they rated to only 100amps?

also, do you have an arming switch or shunt?

[rcman]

Where there is 4 deans connectors that connect the 4 packs, wouldn't that mean that each connector is only pulling 50 amps? I am just guessing but that makes sense to me.

David

[Splummer]

During the AEF at the end of January 2008, Mr. Mark Leseberg put on a great 4min. freestyle with the 35% E-260.

Here are the pics.

-Sean

[diveredd]

Hi Sean,

How do you think this setup would do on an Xtreme Composites/BVMProp 100cc Edge?

Ed

[colo_aggie]

Man, I'm thinking I'm going to have to put a Hacker A100 in my 35% Dalton 260. I'm going to honeycomb the cores to get the weight down and reinforce them with carbon fiber so I can get by with a single aileron servo. I'm hoping to have it down to 25-26 lbs. before the batteries.

[Splummer]

The actual weight of the System is as follows:

Hacker A100-8= 4.0 LBS
Hacker MasterSpin 170= 9.5 oz
12S-10,000mAh Lipoly= 6 lbs 9 oz.

TOTAL POWER SYSTEM WEIGHT= 11Lbs 2.5oz.

I have been using this system for about 10 months on different Aircraft, from 26 Lbs to 32Lbs All-up-Weight. I feel the BEST compromise is a model that will come out at 28-29 Lbs with about 2000 sq.in wing. On these "100cc" Giant scale aerobats 32-33 oz. per sq.ft. wing loading works great.

On my 35% 260 the wing loading comes out at 32.85 oz.per sq.ft. This model is a Joy to fly , really easy in the air and soft landings.

-Sean

[mpope1]

Sean it was fun to watch Mark air that Extra out at the AEF,amazing performance. (I entered that p-38 in the fun scale class at Gunsmoke next weekend, should be interesting to see the reactions when they find out its electric). Mike