Sig Somethin' Xtra Arf

Transcript

RCU Review: Sig Somethin' Xtra EG More On This Product Research Research Research Research Research Research Contributed by: Jim Buzzeo | Published: November 2014 | Views: 13886 | Jim Buzzeo (AMA 74894) Email Me Introduction Specifications First Look Assembly Photo Shoot Flight Report Summary Contact Information Email this Article | PDF Started in 1951 by Glenn and Hazel Sigafoose, Sig has been a leader in the RC industry for over 60 years, supplying high quality aircraft wood, kits, building supplies and of course Almost Ready to Fly (ARF) Airplanes. Still located in Montezuma Iowa, Sig produces over two thousand products from their 80,000 Square foot facility. Airplanes Boats Cars Helicopters Engines & Motors Radio Equipment SIG "EG" Series - suitable for Electric or Glow power. Factory Built and Covered Airframe. 2-Piece Wing Design For Easy Transportation. Magnetic Hatch for access to the battery/radio compartment. Aluminum Landing Gear. Painted Fiberglass Cowling & Wheel Pants. Professionally covered with premium UltraCote. Complete Pushrod & Hardware Package. Photo Illustrated Assembly Manual. Some control horn screws were too short. Skill Level: Time Required to Build: SIG Mfg. Co., Inc. P.O. Box 520 401-7 South Front Street Montezuma, IA 50171-0520 Phone: (641) 623-0215 www.sigmfg.com Recently I was asked to Review one of their latest Almost Ready to Fly (ARF) Airplanes, the Sig Somethin' Xtra EG. I flew the original kit version way back when it was first introduced and loved it, so when Sig's Vice President Mike Gretz asked me if I'd like to try out the new version, I jumped at the opportunity. I would discover very quickly that the new design flies every bit as good as the old one had, and then some. Let's dig in! Frustration Level: What do these ratings mean? Items Needed To Complete: Name:Sig Somethin' Xtra EG Price: $199.99 (Price at Review Publishing Date) Stock Number: SIGRC76EGARFR (Red Version) Stock Number: SIGRC76EGARFG (Green Version) Wingspan: 51.5" (1308mm) Wing Area: 725 Sq.in. (46.7 Sq.dm.) Weight: 5 - 5.5 lbs. (2268-2495 g) Wing Loading: 16 - 17.6 oz./sq.ft (48-53 g/Sq.dm.) Length: 48.25" (1226mm) Center of Gravity (CG): 3-1/4 - 4-1/8" (82-105mm) from the leading edge where wing meets the fuselage Radio Used:Hitec Optic 6 Sport Receiver Used:Hitec Optima 6 Servos Used:Hitec HS-485HB Delux HD Ball Bearing Standard Servo Motor Used:HiMax HC5018-530 Brushless Outrunner Motor ESC Used:Castle Creations 75 Amp Phoenix Edge Channels Used: 4 total - Elevator, Aileron, Throttle and Rudder Control Throws: LOW (Per Manual) Elevator, up/down: 1" Ailerons, up/down: 7/8" Rudder, right/left: 1-5/8" Control Throws: HIGH (Per Manual) Elevator, up/down: 1-1/2" Ailerons, up/down: 1-3/8" Rudder, right/left: 2" Electric Setup: 4 Channel Radio (minimum) and Receiver 4 Standard Servos 4S-6S 3000 - 4000 mAh Lipo Battery Pack 700 - 1000 watt Brushless Motor (550 - 800 kv) 75A Speed Control (ESC) 2 - 6" Servo Wire Extensions 1 - Y-Harness Thread Locking Compound, CA, and Epoxy Various Shop Tools Glow Engine Setup: 4 Channel Radio (minimum), Receiver, and Receiver Battery 5 Standard Servos 2-Stroke .40 - .46 cu. in. Glow Engine (6.5 - 7.5 cc) OR 4-Stroke .53 - .65 cu. in. Glow Engine (8.6 - 10.7 cc) 2 - 6" Servo Wire Extensions 1 - Y-Harness Glow Engine Field Accessories Thread Locking Compound, CA, and Epoxy Various Shop Tools The Sig Somethin' Xtra EG arrived double boxed to minimize any damage that may occur in shipping. Inside, the airplane was packaged beautifully with all major assemblies individually bagged and secured. Besides the airframe itself, the box contained a nice bag of hardware, wheels, aluminum landing gear, spinner, fiberglass cowl and wheel pants, aluminum wing tube and instruction manual. Since this airplane can be powered with an electric motor or glow engine, there was also an electric motor mounting box (for electric power) and a fuel tank and engine mounting hardware, should you elect to use a glow engine. After giving all the components a good look over, I was happy to discover everything appeared to be present and in good condition. The hardware Sig provides is outstanding. I did not feel the need to replace any hardware. Reviewers Note: During assembly, I discovered the screws that attach the control horns to the tail surfaces were very slightly too short. Sig immediately corrected the issue. After making myself familiar with the manual, it was time to roll up my sleeves and get to assembling this great looking airplane. Although not required, I went over the covering with my sealing iron. Do be very careful if you choose to do this optional step, as the checkerboards on the underside of the wing are individual black squares of Oracover (Ultracote). Additionally, you can easily ruin the vinyl graphics with heat. I chose to lightly tighten up the sags that jumped out at me (there were very few). Manual Sig is very well known for not only producing great kits, but also for providing instructions that are complete and make sense. The manual is well written in proper English. I was very pleased to see very little left to the imagination. I highly recommend reading it from cover to cover. The 10 minutes invested in reading the manual pays big benefits, and virtually eliminates guesswork. Wing Assembly The wings went together very quickly. The Hitec HS-485HB servos dropped right in, and the servo cutouts in the wing had predrilled pilot holes for mounting. Next, I hinged the ailerons using Sig's method of putting two T pins into the middle of each hinge to keep them centered between the wing and aileron. It is important to use thin CA to attach the hinges, as thick or medium may not 'wick' fully into the hinges. After the hinges were dry, I attached the aileron control horns with the three screws provided. Pre-drilled pilot holes made attaching the control horns a breeze! Next, I assembled the aileron pushrods. First secure the aileron in its neutral position, thread a clevis onto the pushrod and attach the clevis to the aileron control horn. With the servo centered, mark the pushrod carefully and put a 90 degree bend at the mark. Cut off the extra wire and attach the pushrod to the servo using the included plastic keeper. I should note that the leads on the HS-485HB servos ARE long enough that a servo extension should not be required IF you use a Y harness for the aileron servos. If you choose to use separate receiver channels for the two aileron servos, then you will need an extension for each aileron servo. Hitec Servo Spotlight Hitec HS-485HB Deluxe HD Ball Bearing Standard Servo Analog Sport Servo The HS-485HB updates the very popular HS-475HB by adding more torque and greater speed. With its top ball bearing, heavy duty, high impact Karbonite? gears and high performance circuitry, the HS-485HB offers lots of torque and features excellent centering and resolution. Features: Top Selling Heavy Duty Standard Servo High Impact Karbonite Gears Top Ball Bearings Excellent Centering and Resolution Specifications: Motor Type: 3 Pole Bearing Type: Top Ball Bearing Speed (4.8V/6.0V): 0.20 / 0.17 sec @ 60 deg. Torque oz./in. (4.8V/6.0V): 72 / 89 Torque kg./cm. (4.8V/6.0V): 5.2 / 6.4 Size in Inches: 1.57 x 0.78 x 1.49 Size in Millimeters: 39.88 x 19.81 x 37.85 Weight ounces: 1.59 Weight grams: 45.08 Fuselage Assembly The fuselage assembly begins with the landing gear. Again, Sig impresses with some very high quality components which makes for a quick assembly process. Attach the axles to the painted aluminum landing gear using the provided nuts, add wheel collars and wheels, then attach the wheel pants using two 3MM button head bolts. It was good to see pre-installed blind nuts and proper machine screws for attaching the wheel pants. As always, remember to use thread locker on all metal to metal components: this is particularly important with the wheels and axles. After the landing gear assembly is complete, bolt it to the bottom of the fuselage with three socket head bolts and washers. Once I double checked that everything fit properly, I assembled the landing gear, paying attention to details (remember to attach the wheel pants facing forward!) and using thread locker on all metal to metal joints. The landing gear itself is attached with three machine screws and lock washers. Tail Installation Next I assembled the elevator and horizontal stab, using the same procedure for hinging as used on the ailerons. When I began to add the control horn to the elevator, I discovered what turned out to be the one and only issue with this kit: the control horn screws were slightly short for both the elevator and the rudder. After making sure I hadn't inadvertently used them elsewhere, I emailed Sig to discover if this was a known issue. Mike Gretz responded immediately that it is not a known issue, and that Sig will send the correct screws to their customers in this event. Now it was time to glue the stab/elevator assembly to the fuselage. First I slid the wing tube through the fuselage and attached both wing panels (this gives a reference point for making sure the horizontal and vertical stabilizers are aligned properly) then I mixed up a small batch of 2 hour Epoxy and glued the horizontal stab in place. Double and triple check the alignment of the horizontal stab by measuring the distance between the right stab tip and the right wing stab tip. The measurement for the left hand side should match exactly. Once I was confident that the stabilizer was perfectly aligned, I let the glue cure completely. After the horizontal stab was fully cured, I mixed up some more epoxy and set the vertical fin in place. Once again, it is imperative that the fin is absolutely straight with the fuselage and at 90 degrees to the wing and horizontal stab. Once the Epoxy had cured, I hinged the rudder. Next using the same technique as on the other surfaces, I attached the rudder's control horn to the left hand side of the rudder. Then I bolted the tail wheel assembly in place, and added the clasp which attaches the tail wheel steering rod to the rudder. I was amazed that I was nearly finished with the fuselage assembly already! Next up was elevator and rudder servo installation and pushrod assembly. As was the case with the wing servo holes, the HS-485HB Servos dropped into place without any trimming. After the servos were screwed in place I assembled the pushrods, and using the method outlined in the manual I marked, bent and cut the pushrods to size and attached them to the servos and control surfaces. No surprises and no drama. Exactly what I expect from Sig. Motor, ESC and Cowl Installation It's now officially decision time, as this is the point the assembly process where you much choose either electric or glow to fly this great little airplane. I elected to power my Somethin' Xtra with an HiMax HC5018-530 Motor, Castle Creations Phoenix Edge 75 Amp ESC, 5 Cell, 4000 Mah Lipo battery and 14X8 wood propeller. I would later discover this is a perfect electric power combination for this airframe! Sig uses an ingenious 'sliding firewall' in many of it's new electric powered airplanes, to allow a wide range of motors to be used yet still have the prop centered in front of the cowl. The first step is to attach the mounting plate and prop adapter to the motor and measure the distance between the back side of the mounting plate and the front side of the prop adapter's thrust washer. Subtract that distance from 4.25 inches to determine how far back the firewall needs to be. My measurements determined that I would need to push the firewall as far aft as possible. Next I removed the motor's mounting plate, marked the mounting holes and drilled the firewall with a 7/32 dia. drill bit. I installed the four blind nuts which secure the motor, mixed up some 2 hour epoxy and securely glued the sliding firewall to the motor box. When cured I added the triangle balsa stock to the motor box and set it aside to dry. With the Motor box complete, I moved on to mounting the ESC. Sig suggests mounting the ESC to the top of the forward fuselage area, above the battery. There is a single former in the front of the fuselage which is used as a 'stop' for the fuel tank when the Somethin' Xtra is powered with a Glow Engine. That former should be removed when using electric power. I wrapped a piece of hook and loop fastener around the ESC, fished the ESC's wires through the firewall and with the fuselage inverted on my work bench, I glued the hook and loop fastener to the top forward section of the battery compartment, as the manual suggests. To mount the Motor box, you'll need to put a hex ball driver or allen wrench through the motor mounting holes, then attach the mount screw to the ball driver. I found it fairly easy to do especially if you hold the fuselage vertical, since gravity tends to hold the hex bolt in place on the hex driver. After the four hex bolts were tight, (remembering to use thread locker on all metal to metal screws) it was fairly simple to connect the motor to the ESC, and mount the motor to the motor box. Himax Brushless Outrunner Motor Spotlight Himax HC5018-530 Glow Engine Equivalent .46 - .90 HC50 - These motors are for large models weighing 6-8Lb for 3-D flight, 8-15Lb for aerobatic flight and 10-20Lb for leisure flight. Features: High torque to turn large props direct drive Mounting hardware and connectors included Fully disassembles and we have all spare parts in stock Specifications: Diameter: 50mm Length: 53mm Weight: 280g Shaft Diameter: 6mm Prop Size: 12x8 - 16x8 ESC Rating: 60 Amp kV Rating: 530 Next it was time to install the cowling, taking note that the cowl is already pre-drilled to accept the mounting screws. with the motor and prop adapter in place, test fit the cowling using masking tape to prevent the cowling from moving. Make sure the prop adapter in centered in the hole, and that there is adequate clearance between the prop adapter and the front of the cowling. Double check that everything looks centered. Using a 5/64 or #45 drill bit, drill pilot holes one at a time for the four cowl mounting screws, rechecking that nothing has moved and that everything is still centered, then remove the masking tape and tighten the screws. I opted not to use a large spinner, but rather I used the 'acorn' type prop nut which was provided with my HiMax Motor. With the ESC mounted behind the firewall, I was concerned that I may not have enough airflow over the ESC. Instead of cutting an air exit hole in the cowl, I made an air exit hole in the aft fuselage, per the pictures in the manual. The motor, ESC and Battery have all remained cool. Castle Creations Phoenix Edge ESC Spotlight Phoenix Edge 75 Amp ESC Unparalleled Versatility With the debut of the Phoenix Edge series of ESCs the next evolution in speed controller technology has arrived. The Edge series introduces a user programmable auxiliary wire capable of functions modelers have only dreamed of, until now. The white auxiliary wire can be used for helicopter governor gain input adjustments mid-flight, serve as an audible beacon after an ?unexpected landing?, act as an RPM output for 3-axis gyros that support RPM sensors, be used as an ESC arming lock (coupon for free Arming Lockout Key included) or as a receiver arming lock. Combined with the data logging capability the Edge series of controllers offer, users can enjoy unparalleled versatility. The Phoenix Edge series is intended for use in helicopters ranging from 450 to 800 size, and fixed wing aircraft up to 1.20 size and larger. As always, the Edge series of controllers offer industry-leading software functions, data logging, and USB programming capability via Castle Link USB adapter. Features: Fully programmable Castle feature set using Castle Link USB adapter (coupon for free Castle Link USB adapter included in package) and freely downloadable Castle Link Windows software.Castle Field Link Programming Card (sold separately) compatible for select functions. Specifications: Input voltage: MIN: 2S LiPo MAX: 8S LiPo Max continuous amperage at full throttle: 75 amps BEC voltage (voltage regulator for powering radio and sevos): User selectable choice from 5 to 8.4 volt output BEC output amperage: 5 amp peak Width: 2.0" (50.8mm) Length: 2.8" (71.9mm) Height: 0.9" (23.2mm) Weight w/wires: 4.0 oz (113.4g) Weight w/o wires: 2.5 oz (70.9g) Receiver Installation and Setup Some final tasks and this airplane is ready to go! I installed my Hitec Optima receiver and connected the servos and ESC. I installed my receiver at the specified location in front of the elevator and rudder servos. Another piece of hook and loop fastener holds the receiver in place. I decided to use separate channels for the two aileron servos in lieu of using a 'Y' cord. We're ALMOST ready to FLY! The Somethin' Xtra features a removable battery tray to facilitate a quick battery change. I glued the provided hook and loop fastener to the tray and attached my five cell lipo. There was plenty of room to mount my 4 or 5 Cell Lipo packs using the provided battery tray and hook and loop fastener, but if your batteries are too large, you can omit the battery tray entirely and simply use hook and loop fastener to attach the battery to the plywood fuselage floor. Hitec Receiver Spotlight Hitec Optima 6 6 Channel 2.4gHz Receiver The Optima 6 is the smallest and least expensive Hitec 2.4GHz receiver. Built on the same foundation as the Optima 7 without the full telemetry features, the Optima 6 is 20% smaller and weighs in at just slightly over a half an ounce making it perfect for smaller aircraft Features: Adaptive Frequency Hopping Spread Spectrum Technology (AFHSS) Our 2.4GHz system utilizes the latest AFHSS technology and our exclusive Smart Scan system to ensure a rock solid, interference free connection between the transmitter and receiver. When selected, Hitec?s 2.4GHz SmartScan function scans the 2.4GHz spectrum to find the cleanest channels in which to operate therefore providing interference free operation even in the most crowded environments. Boosted Omni Directional Antenna (BODA) The Optima 2.4GHz line of receivers feature our exclusive BODA receiver technology. Independent testing has proven that the single BODA antenna system in our 6 & 7 channel systems is equal to or better than our competitor?s dual antenna systems SmartScan Mode Selectable Basic Telemetry Function : RX Low Battery Warning Range Check Mode (Reduced output to approx. 30M range) Fail-safe/Hold Function Specifications: Modulation: 2.4GHz AFHSS Size in Inches: 1.84 x 0.84 x 0.45 Size in Millimeters: 46.74 x 21.34 x 11.43 Weight ounces: 0.54 Weight grams: 15.31 Final Touches The final step in assembling the Somethin' Xtra was to assemble the canopy / battery hatch. Sig suggests an RC-56 type Canopy glue, I used Foam Tac by Beacon Adhesives to attach the pilot figure. Once it had set for a few minutes I ran a bead around the clear canopy and set it in place. Once cured, I fitted the hatch to the airframe and was happy to see that it came out perfectly. Flight test day for the Somethin' Xtra was extremely nice for Minnesota in September, temps in the 60's, blue skies and very little wind. My flying Buddy and fellow reviewer Geoff Barber was ready with the cameras as usual. After Performing a range test, I put the Xtra on the runway for a 'last chance' control check and smoothly advanced the throttle. A little right rudder and the Xtra lifted off with authority at only 2/3 throttle. Two clicks of up elevator trim and a smidge of left aileron trim was all it took for hands off level flight. I was immediately impressed with the Somethin' Xtra. Even with only a four cell 3000 mAh lipo it flew with authority. I slowed it down for a couple of camera passes and was very pleased with its slow speed handling. The Xtra's thick airfoil simply did not want to stop flying. I brought it up to a safe altitude for a little stall testing and the Xtra showed no desire to drop a wing, if I got it too slow the Xtra simply dropped its nose slightly and kept on flying. After flying around for a few more minutes, I brought the Xtra around for some approaches and again I found myself smiling! The Xtra is what I would call a 'solid and honest' aerobatic airplane. It has virtually no 'Self leveling' characteristics, but it also had no nasty surprises. I was able to put the airplane down smoothly at any point on the runway I chose. Once the initial photos were done, Geoff Suggested I install a 5 cell lipo and see what sort of performance we'd get. I can tell you, with a 5 cell pack this airplane absolutely ROCKS. I began tossing the Xtra around the sky, and the airplane simply asked for more. At the suggested high rate throws, I was not quite able to sustain knife edge flight from horizon to horizon, But I'm sure if I adjusted the rudder to its mechanical limits it would. The Xtra was capable of anything I could throw at it and never once felt 'squirrely' or unstable. The roll rate was very good, I had no difficulty with axial or point rolls, Snap rolls were particularly crisp, yet on releasing the sticks the Xtra would resume flying in whatever direction it was pointed. Big round loops (inside and outside), Cuban 8's, Immelmans and split S's were almost effortless. After another couple of minutes of pure fun, my 10 minute timer went off and I reluctantly brought the Xtra around for a nice low approach. One last pass for the camera and I brought it back home, slow and nose high, carrying plenty of power the Somethin' Xtra settled onto the runway gently and gracefully. I was more than a little pleased. Sig Somethin' Xtra EG ARF The Somethin' Xtra is all about aerobatics, and I discovered this airplane truly does not care if it's upright or inverted. Fast or slow, and in most any orientation this airplane will go where you point it and will do so very smoothly. One word of caution: This airplane can be habit forming! Although this is not an airplane for the novice, you will have a ball with the Sig Somethin' Xtra if you've had a couple of hours of wind under your wings. For the intermediate to advanced pilot, this is one great aerobatic airplane! Another win for the team at SIG! SIG Mfg. Co., Inc. P.O. Box 520 401-7 South Front Street Montezuma, IA 50171-0520 Phone: (641) 623-0215 www.sigmfg.com HITEC RCD USA, Inc. 11215 Paine Street Poway, CA 92064 Phone: 1-858-748-6948 www.hitecrcd.com Castle Creations 540 North Rogers Road Olathe, Kansas 66062 phone: (913) 390-6939 fax: (913) 390-6164 www.castlecreations.com Maxx Products International, LLC. 815 Oakwood Road, Unit D, Lake Zurich, IL 60047 Phone: (847) 438-2233 www.maxxprod.com Comments on RCU Review: Sig Somethin' Xtra EG Posted by: hsukaria on 11/10/2014 Profile Posted by: hsukaria on 11/11/2014 This plane is too nice to ruin it with electric power!!! Profile Posted by: AMA 74894 on 11/12/2014 Profile Fortunately when Sig re-designed this airframe, they had the sense to not only allow the use of either electric or gas power, they made it doggone easy (and the ARF includes everything required for glow or electric, including engine mount and fuel tank.) I had the opportunity to fly the glow version as well, I love them BOTH. ;) J.M.B. Posted by: Skycam41 on 12/28/2014 Profile Thanks for the great review, pictures and video. My mind has been made up and will buy the green version and it also will be electric power. AXI 4120 with a 6S 3000 lipo battery. Page: 1 The comments, observations and conclusions made in this review are solely with respect to the particular item the editor reviewed and may not apply generally to similar products by the manufacturer. We cannot be responsible for any manufacturer defects in workmanship or other deficiencies in products like the one featured in the review. EMAIL THIS ARTICLE OR CHECK OUT THESE OTHER GREAT REVIEWS! Photo Manufacturer Phoenix Models Cessna 182 GP/EP ARF Flight Model Mini Excellence Flyzone L-39 ST Models DG-1000 The World Models 30% PT-17 Stearman ARF (U.S. ARMY) Latrax Product Summary New from Phoenix Models is their 182 Skylane. 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