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Old Jul 10, 2009, 11:26 PM
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Sacramento, CA
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My Fleet: F-27 Stryker, HK-450 Heli, Freewing F-15, E-Flite Blade MSR

For my own ammusement, I have started this blog thread to posts my hopes, fears, successes, failures, and catastrohphic incidents. Feel free to post whatever you want in this thread, thanks for checking it out.


Current Setups;

Stryker:
ARC 28-47-2170kv
Turnigy Plush 80 ESC
Zippy Flightmax 4s 2650mah 30C
Spektrum AR500 rx
Graupner Speed 6.5 x 6.5 prop
HS 85 Metal Gear Servos

Freewing F-15:
Dons RC Wicked 4800kv Outrunner
Turnigy "Plush" 40 amp ESC
Zippy 11.1v 2200 mah 20c
Spektrum AR500
64mm EDO 5 blade EDF
Stock Servos (No Name)

HK-450 Metal Version (Align Trex Clone)
Turnigy 2836 3700kv Outrunner
Pentium 40 amp ESC
MG-14 Servos (Hobby-City)
Assan Gyro
Zippy 11.1v 2200 mah 20c
AR6200 rx

E-Flite Blade MS-R Micro Heli
BNF Edition


Past Setups

Freewing F-35/Nitroplanes F-5
(Both Gone Now, But they used these components)

Dons RC Wicked 4800kv Outrunner
Pentium 40 amp ESC
Zippy 11.1v 2200 mah 20c
Spektrum AR500
64mm EDO 5 blade EDF
HS-55 Servos

Stryker:
Turnigy 2836 2350kv Outrunner
Pentium 40 amp ESC
Zippy "Rhino" 11.1v 2250mah 30c
Spektrum AR500 rx
APC 6 x 5.5 prop
Parkzone Servos

Stryker:
Medusa Research 28-40-1700kv
Turnigy Plush 80 ESC
Zippy Flightmax 4s 2650mah 30C
Spektrum AR500 rx
APC 7x7 prop
HS 85 Metal Gear Servos
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Old Jul 28, 2009, 01:18 AM
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Sacramento, CA
Joined May 2009
718 Posts
New Stryker

About a week ago I built a new Stryker from parts. I was motivated by finding a really good, inexpensive motor from hobbycity.com.

I first tried their 2835 2700kv Inrunner, which was not a terrible motor, but lacked power, and drew a suprisingly large amount of amps. The motor came down smoking hot as well.

By comparison, the 2836 2350kv Outrunner draws approx 30-34 amps with the Parkzone 6x4 prop, and 38-40 amps with an APC 6x5.5, has great power, and comes down cool to the touch. The stock motor mount needed slight modification for the outrunner. I used a rotary tool to create 1-2mm of extra space inside the mount for the motor to rotate without rubbing.
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Last edited by ender707; Aug 13, 2009 at 12:51 PM.
Old Jul 28, 2009, 09:21 PM
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Sacramento, CA
Joined May 2009
718 Posts
Stryker Maiden Flight Pics

My Wife (tried) snapped some pictures of the Stryker for me.
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Old Aug 01, 2009, 12:34 AM
Take off, eh
plainguy's Avatar
USA, CA, Long Beach
Joined Jan 2009
213 Posts
hello there, this was one of my 1st planes. flew it with a series six eflite 2700 KV
5 x 5 prop drew about 32 amps if i remember correctly sadly i sold it. when i thought i outgrew it. thinking on building another. my question to you. whet did you use to paint it. i love the light grey color w/ black trim.
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Old Aug 01, 2009, 01:24 PM
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Sacramento, CA
Joined May 2009
718 Posts
Quote:
Originally Posted by plainguy
hello there, this was one of my 1st planes. flew it with a series six eflite 2700 KV
5 x 5 prop drew about 32 amps if i remember correctly sadly i sold it. when i thought i outgrew it. thinking on building another. my question to you. whet did you use to paint it. i love the light grey color w/ black trim.
The Stryker is actually Tan/Light Brown, with Dark Brown trim. The elevons and canopy parts are black.

I painted it with 'Flat, Camoflauge Spraypaint' from my local hardware store (ACE Hardware), but have gotten it from Home Depot in the past. It works well, dries fast, and does not seem to have any adverse effect on the foam.
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Old Aug 06, 2009, 11:19 PM
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Joined May 2009
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F-35 Problems

Flying my F-35 the other day, and on an otherwise nice landing, the grass caught my elevator and ripped in in half . I know you are supposed to release the sticks so the elevators straighten out before landing, and I did (or was trying) but failed.

Repaired the elevator using epoxy, toothepicks, plaster, and paint. Went back to the park and put Three more batteries through it, success.
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Old Aug 06, 2009, 11:25 PM
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Joined May 2009
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Stryker Rudders...

Just messing around with my spare parts, I have tried to create some rudders for my Stryker. I know it has been done before, and I do not know how useful they really are. But I would like to fly "sideways", and use the rudders as an elevator, just because I think it will be fun.

I will be mounting these rudders on my new "Brown" Stryker soon...
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Old Aug 11, 2009, 06:57 PM
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Joined May 2009
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F-5 from Nitroplanes, F-35 stripped for parts

I was liking using the landing gear on my F-15 so much, that I wanted to get another plane with gear. Nitroplanes.com is nearly sold out of everything (and has been for some time) so I could not get the F-35 kit that they sell with gear to replace my Freewing F-35.

So I got the F-5 for now. I have completed the build, and only had to make a few modifications to get my equipment in to it.

-It is made for 1300mah lipos, so I customized the battery box by removing the forward firewall and removing foam to fit my 2200mah zippys.

-The space the battery needed was where the nose wheel servo went, so I mounted it further forward. I did not use the stock control rod system for the nose servo, as it used a straight rod, and special pieces for the control horns that held the rod with Set Screws. I bent up a normal rod and clevis, since after the plane is put together you lose access to this area, i wanted a maintanence free setup. The servo is held in by Lots of epoxy.

Should fly it within a couple days.
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Old Aug 14, 2009, 07:20 PM
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Sacramento, CA
Joined May 2009
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Stryker Rudder Mod

I have made a set of vertical stabs for my Stryker with Rudders on them. Using Dubro hinges and Control Horns, and some linkages that I had on hand, they seem to function very smoothly.

I taped and painted over the servos mounted on the body, I wanted to conceal them to maintain a "Stock" look to the plane. I think it looks good, next up is the flight test...
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Old Aug 19, 2009, 03:16 PM
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Sacramento, CA
Joined May 2009
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And Failure

I went over to the Local High School to Maiden the Nitroplanes F-5 Today, and due to good old fashioned pilot error, I stalled it while lining it up for a landing at the end of the first battery. It pancaked pretty hard with a slight nose down angle, snapped both wings, and ripped out the nose gear.

Its too bad too, because it flew really well, although it felt slightly underpowered, although it was not much bigger/heavier than the F-35, which feels like it has power to spare using the same compnents. Looks like the F-35 will be getting its guts back...and maybe the landing gear from the late F-5. It will have to wait a couple weeks though, as I have ordered one of Freewing's "Thrust Vectoring Nozzles" from RC-Castle.com that I want to stick on it
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Old Sep 14, 2009, 10:54 PM
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Sacramento, CA
Joined May 2009
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F-5 destroyed, Long live F-35 #2

The F-5 is officially dead due to an adverse reaction to the paint that worked just fine on my Stryker...So the F-35 is officially back in play.

I am in the process of adapting FW Thrust Vectoring nozzly onto the backside of my F-35, as I am not in the market for the 70mm EDF F-35 with TV right now.

So here are the pics I took while I am looking at it to see if it can be done:

The servo would need to be mounted on the underside of the plane, and CG would need to be adjusted. I have my lipo seated at the rear of the compartment now, so I could adjust it forward slightly to maintain CG with the added tail weight.
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Old Sep 20, 2009, 01:29 PM
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F-35 #2 Destroyed

Freewing 64mm F-35, Custom mounted Freewing 180 degree Thrust Vectoring Nozzle, setup and test (0 min 31 sec)


Well, I am sorry to report that my F-35 is now in a box

In the interest of the science, I will try to describe what took place (because I had no one to video tape).

I kept the thrust line at the "Stock" position for launch, and had my pre-programmed "up" elevator for launch on my Flaps switch, which worked well for launching the plane prior to the TV mod. So with the TV switch (Mix 1) turned off, I threw it and got it in the air. It seemed slightly tail heavy despite positioning the battery further forward to compensate, but was flying.

Upon flipping on the TV switch, control became very difficult, and it did not take much elevator input to make the plane begin looping (very fast and tight loops, more like rotating in place!) I was trying to play around with this, but I did not set up a dual rate for the TV (On the rudder channel) so it was all or nothing.

The problem that ultimately resulted in a pretty hard crash (Maybe Nitro could fix it ) was that the looping/spinning killed airspeed, and while TV can allow you to "fly" with very little or no airspeed, my 180 degree TV nozzle only provides 180 degree control in this situation, and turning the TV off in this situation results in a stationary plane, that is prone to torque roll, at "x" alltitude.

But obviously the Ailerons/Tailerons do you no good with a low airspeed, especially on this model, and the TV would rotate the plane, but with very little control over the planes angle/general orientation. So after a few passes and a few of these wild rotations, I was trying to get her straight again, lost alltitude, and ended up doing a dive to the Earth.

In the end, I think this would have been more successful with much less throw on the TV nozzle. MUCH less than the video I posted, at least on a Dual Rate switch. Or, mount the 180 degree nozzle further in the plane and use it with a Taileron TV mod to give more control at low speeds. Or, wait for FW to release their 360 degree Nozzle.

Pretty exciting flight overall!
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Last edited by ender707; Nov 30, 2009 at 06:26 PM.
Old Nov 30, 2009, 06:13 PM
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Sacramento, CA
Joined May 2009
718 Posts
New Power Stryker

The Power Stryker:
Medusa Research 28-40-1700kv
Turnigy Plush 80 ESC
Zippy Flightmax 4s 2650mah 30C
Spektrum AR500 rx
APC 7x7 prop
HS 85 Metal Gear Servos

Test/Performance Data
Partially drained pack, starting voltage of 16.16 Volts

Average of 3 short runs:

55.16 amps
773.8 watts
13.74 volts = 3.435 volts per cell
~42 ounces thrust
AUW of 29 ounces

Added .210 CF Rods, and balsa elevons to keep the plane nice and sturdy in high powered flight.

Unforunately, the Shaft of the Medusa bent on Landing on my 3rd flight with it, and I am currently waiting for a replacement.

Stryker: Medusa Research 28-40-1700kv (1 min 32 sec)
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Old Nov 30, 2009, 06:19 PM
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Sacramento, CA
Joined May 2009
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Additions to Power Stryker

While waiting for my new ARC 28-47-2170kv motor, I hooked up this Turnigy 2835 2700kv motor, ran some tests and got in a quick flight.

I also added a front-to-back Carbon Fiber Rod to the underside of the plane.

Setup:
Turnigy 2835 2700kv inrunner
APC 6x4
Turnigy Plush 80 amp ESC
Zippy Flightmax 4s 2650mah 30C

Average of 3 short runs on "Watts Up" meter and Digital food scale:

Starting Voltage:16.46
46 Ounces Thrust
45 amps
630 watts
14.19 volts

In my initial static testing the motor got warm quickly, but came down from a 6 minute flight that was heavy on the throttle just warm. The good news is, I think I could prop up to an APC 6x5.5 without over heating the motor like I initially thought.

The bad news was (and the reason it was a heavy throttle flight) was that it was not very powerful with the 6x4, and my Flying Weight is almost 31 Ounces. With a 1.48:1 Thrust to Weight ratio (Static), vertical was unlimited, but Slow. I am hesistant to estimate Speed, but I would describe the passes as "Quick" but not "Fast". Overall, I was much happier with it on 4s than when I ran it on 3s.

(P.S. I miss the Medusa already, its hard to go from That to This)
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Last edited by ender707; Nov 30, 2009 at 06:29 PM.
Old Dec 05, 2009, 10:56 PM
Buzz Run Extraordinare!
b-29er's Avatar
USA, MI, Sanford
Joined Jul 2006
2,370 Posts
Well, i have to say that i feel your pain on your losses. i hope you can get your fleet up again.
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