E-flite/hori­zon Hobby UMX Tim­ber

Per­fect plane to keep in your car to fly any­time, any­where

Electric Flight - - CONTENTS - By Ja­son Benson

Per­fect plane to keep in your car to fly any­time, any­where

With gyro sta­bi­liza­tion be­com­ing more pop­u­lar, re­fined ul­tra-mi­cro air­craft are be­com­ing more com­mon­place. With­out a doubt, one of the com­pa­nies driv­ing this trend is E-flite. Its small, all-foam UMX mod­els get bet­ter with ev­ery re­lease, and the UMX Tim­ber is no ex­cep­tion. The Tim­ber’s air­frame is con­structed out of molded foam, and sports mis­cel­la­neous plas­tic and metal parts, such as wire land­ing gear and con­trol horns. There is also a set of op­tional lead­ing-edge slats for en­hanced short take­off and land­ing (STOL) per­for­mance.

Ev­ery­thing you need, with the ex­cep­tion of the flight bat­tery and trans­mit­ter, is in­cluded in the box of the BNF Ba­sic ver­sion. The plane comes as­sem­bled and ready for flight. All you’ll need to do is charge and in­stall your bat­tery, con­fig­ure your ra­dio per the in­cluded guide, bind, and fly. I lov­ingly re­fer to the E-flite UMX planes as “planes in a box” be­cause when you are done fly­ing, the plane goes back into its orig­i­nal box for stor­age un­til you’re ready for your next out­ing.

This model is in­tended for in­ter­me­di­ate pi­lots and above. Any­one will have a good time with this plane due to its great flight char­ac­ter­is­tics and wide flight en­ve­lope. The built-in AS3X SAFE Se­lect sys­tem makes this a per­fect can­di­date for first-time RC pi­lots, and more ex­pe­ri­enced and de­mand­ing pi­lots can, of course, turn it off to un­leash the full per­for­mance of the air­craft.

UNIQUE FEA­TURES

All sur­faces are pre­hinged and ready for flight out of the box. The hinges ap­pear to be the stan­dard for these foam mod­els, which are pressed in as a part of the mold­ing process. There is also re­in­force­ment in­stalled in key ar­eas, like the flaps, that have a large range of mo­tion and could be sus­cep­ti­ble to split­ting. The Tim­ber’s flaps come in­stalled as well, and the prebent wire land­ing gear also comes in­stalled. There is an op­tional set of floats avail­able, and the in­stall process looks as if it can be com­pleted in five min­utes or less. E-flite did a great job of plan­ning ahead and sim­pli­fy­ing this plane to make it more en­joy­able to own and fly.

I looked over the en­tire air­frame and no­ticed that the ar­eas that need a lit­tle bit of rigid­ity or “bite” to at­tach ser­vos are all made out of molded ABS plas­tic and per­fectly blended into the foam body. All the foam com­po­nents are molded to shape, and no fit­ting or cut­ting of any kind is re­quired. The Tim­ber’s de­cals look great, and when you pull the plane out of the box, it looks ex­actly like the one pic­tured on the box.

I as­sume that all the hard­ware on the UMX Tim­ber is met­ric in thread, but hon­estly, I could own this plane for years and prob­a­bly never find out. To get this plane ready for flight re­quires ab­so­lutely no tools, and day-

to-day op­er­a­tion should be no dif­fer­ent.

I made no mod­i­fi­ca­tions at all to the Tim­ber. I did, how­ever, have to make one small re­pair. While plug­ging or un­plug­ging the flight bat­tery, I man­aged to prove that I do not have the light­est touch and some­how man­aged to break the side of the fuse­lage (the piece of foam was lost on the initial flights). The fix was easy, though: I cut a small piece of 3mm De­pron foam to shape, and glued it in place with some foam-safe CA. The fuse­lage is, once again, whole and the fun can con­tinue.

IN THE AIR

This plane is about as ver­sa­tile as you can get when it comes to where it can be flown. From a small in­door area to a grass park to a full-on RC club field, you should not have an is­sue. The wheels are large for the size of the model, so you should be able to fly from most rea­son­able sur­faces. If you do find your­self on a sur­face too rough for take­off, the UMX Tim­ber is more than sta­ble and pre­dictable enough to be hand­launched and light enough to be landed on the rough ter­rain or be caught.

GEN­ERAL FLIGHT PER­FOR­MANCE

Sta­bil­ity: With the AS3X Safe-en­abled re­ceiver, sta­bil­ity is the name of the UMX Tim­ber’s game. With SAFE en­gaged, you will have a hard time get­ting into trou­ble. From its self-right­ing fea­ture to the fact that it will not al­low you to over-roll or pull, the UMX Tim­ber al­most flies it­self. Track­ing: This plane is small and light, so track­ing will be one of the first things that suffers. The AS3X sys­tem does a great job of coun­ter­act­ing light breezes and ther­mal ac­tiv­ity, but you will still need to fly the UMX Tim­ber to keep it go­ing ex­actly where you want it to go. Aerobatics: Aerobatics is some­thing that re­ally sur­prised me with the UMX Tim­ber. This plane has plenty of con­trol au­thor­ity and power to per­form some im­pres­sive aerobatics. Slow rolls, point rolls, big loops, stall turns, and even hov­er­ing are all pos­si­ble and eas­ier to per­form than one might think. I was very happy with the over­all per­for­mance. Glide and stall per­for­mance: Due to its light weight, the UMX Tim­ber does not pen­e­trate or carry mo­men­tum well. If there is a slight breeze, a lit­tle bit of power is some­times re­quired to make the land­ing zone. That be­ing said, the stall point is al­most at 0mph of air­speed, so the stall per­for­mance is ex­cep­tional. So if you find your­self out of juice, do your best to make the field and then slow the plane down as much as pos­si­ble for touch­down. Even if you are off-field, the UMX Tim­ber is so light that you will prob­a­bly es­cape all da­m­age.

PILOT DEBRIEFING

For a high-wing sport plane, the UMX Tim­ber does ev­ery­thing well. My best advice is to go pick one up and see what all the hype is about. You re­ally can’t go wrong.

The in­cluded brush­less mo­tor/prop com­bi­na­tion pro­vides plenty of power.

Be­cause it’s so small, this is a great plane for leav­ing in the car for an im­promptu fly­ing ses­sion.

The hatch is at­tached with mag­nets and is eas­ily re­moved for

The foam spin­ner and prop are a durable com­bi­na­tion.

Left: The tun­dra tires make fly­ing from rough sur­faces a breeze. Right: ac­cess to all the elec­tron­ics.

Newspapers in English

Newspapers from USA

© PressReader. All rights reserved.