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Traxxas Revo BL 4/23/09 11:49 AM Page 60 TRAXXAS WORLD EXCLUSIVE

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Unknown60 MORE FROM THIS ISSUE AT RCCARACTION.COM
TRAXXAS E-REVO BRUSHLESS EDITION We tear it up with Traxxas’ mightiest monster WORDS BRANDON WILCOX PHOTOS HOPE McCALL
When the original E-Revo came out, people were stoked. It had everything they craved: brushless-ready drive- train, inboard shocks, integrated battery components and waterproof electronics. With the new Brushless Edition, you get every- thing you wanted … and then some. The brushless-ready drivetrain is now powered by a beefy Castle Creations 2200kV motor and Mamba Monster Speed control, which deliver tons of torque and an incredible top end that reaches 65mph and beyond. The speed control is secured to the chassis with a Traxxas-designed hold-down. Traxxas also jumped on the 2.4GHz revolution. No more AM radio here; the new TQ may look like the original, but it’s now operating in the glitch-free, crystal-less 2.4GHz band. With more power comes more stress, and this new truck includes heavy-duty 17mm splined aluminum hex hubs that are held on with set- screws to beef up the drivetrain. With tons of power on tap and a race-proven setup, this truck will be sure to please the basher or racer in you. Follow along as we give you the ins and outs of this truck.
WORLD EXCLUSIVE!
SPECIFICATIONS Type 1⁄10-scale RTR 4WD electric monster truck Price $665 (varies with dealer) Top Speed 65mph Wheelbase 14.1 in. (358mm) Width 16.5 in. (419mm) Weight, as tested 9.5 lb. (4,330g) w/o batteries Spur/pinion 65/18 Final drive ratio 18.8:1 Chassis Molded composite nylon tub Differential(s) Sealed bevel gear Suspension Sealed pivot ball w/ inboard-mounted shocks Shocks Hard-anodized, Teflon-coated shock body with titanium-coated shock shaft
Traxxas Revo BL 4/23/09 11:49 AM Page 60
JULY 2009 61
I went to Wolcott Hobby & Raceway in Wolcott, CT, to push the E-Revo
Brushless Edition to the limits. It has a well-groomed, medium-size-
track and a huge area in the back that is set up for bashing.
I installed two MaxAmps.com 5250 30C 3-cell LiPo packs
and eased on the throttle. Even at low speeds, the Mamba
Monster speed control and motor felt smooth. Heading
over to the long straightaway, I launched it full speed and
couldn’t believe the torque this E-Revo has. The front tires
will pull off the ground at any speed. Once the wheels were
on the ground, I went to the end of the straightaway and
back. Without question, the E-Revo Brushless Edition is
the fastest RTR I’ve ever driven. After getting a feel for the
speed on tap, it was time to turn some laps. The Brushless
Edition sports the same great handling and suspension as the
standard E-Revo, so even though I started going around the track tamely, I was
quickly able to pick up pace. It handled well and was difficult to flip unless fully
punched. Of course, I had to slow down to make it around a corner if I came into it
at full speed. With the amount of power this truck has and the stock tires, the turn-
ing radius is large at full speed. The brakes work well and felt smooth. I had no
trouble stopping, even after a full-speed pass on the dirt. On the pavement however, a full-speed run and
full brakes will result in an endo and sometimes a flip. The best part of testing is jumping. Small
bumps and rocks really have no effect on this truck; the suspension does a great job of soaking
those up. When going over big jumps, the E-Revo handles great in the air and jumps even, or
slightly nose-up. With the amount of power the Castle Creations Mamba Monster system
offers, it was easy to backflip or front-flip the truck with a quick tap of the throttle or
brakes. Hit a large jump at about 60 percent throttle and then gun it in the air. You’ll do
an instant backflip. Front flips were even easier. I hit the jump at between 60 percent
throttle and full speed and quickly slammed the brakes in the air. Different-size
jumps require different amounts of throttle, so just make sure you have the air
time to correct the truck and land smoothly. This truck is really capable of
some cool tricks and one of my favorites is to launch it as high as I can and
stay on the throttle so the truck's nose is pointing straight up and then wait
until the last moment to level it out with a tap of the brake just
before landing. It was a blast. I continued to go
around the track as fast as I could, trying to
cut the corners tight and hit the jumps
hard. At the end of the day, there
was no breakage—a welcome
conclusion to any test session.
PERFORMANCE
62 MORE FROM THIS ISSUE AT RCCARACTION.COM
CHASSIS. The chassis is the same as the standard E-Revo and features a molded one-piece design. It is designed for a low CG and incorporates two battery com- partments, one on each side of the chassis for even weight distribution. It can hold either 6- or 7-cell NiMH packs or 2- or 3-cell LiPo packs. The battery compartments open with two quick- release tabs. Cooling vents in the front of the battery trays let in cool air, and in the back they let the hot air out.
SUSPENSION. The E-Revo Brushless Edition features the same great inboard suspension that made the E-Revo and Revo 3.3 so stable. The pivot-ball system operates on progressive-rate rockers and can be adjusted by swapping to the long- travel rockers (included with the truck). Connected to the rockers are hard- anodized 87mm, Teflon-coated aluminum shocks. The shocks feature a threaded body, so preload can be adjusted quickly and easily just using your hands.
DRIVETRAIN. The E-Revo Brushless Edition comes with a heavy-duty, single-speed transmission. Gears are extra wide to hold up to the abuse of brushless power, and everything runs on rubber- sealed ball bearings. The Revo-spec slipper clutch is adjustable from the outside of the case, so there are no screws or covers to remove to make adjustments. The gear cover can be removed with only one screw, and this allows you to access the spur and pinion gear. Traxxas offers an optional 2-speed conversion kit that comes with everything you need to take this transmission from a 1-speed to a 2-speed. Traxxas PN 5692 comes with the gear sets, waterproof sub-micro servos and the linkages you need to hook every- thing together. In addition to a beefy transmission, the E-Revo Brushless Edition comes with heavy-duty telescop- ing driveshafts. New splined 17mm alu- minum hex hubs hold the wheels on
securely and are held on the output shaft with a setscrew. You can easily swap tires and not worry about the hex falling off. Since the hex and the rim are both splined, it’s rather hard to imagine your rims ever stripping.
BODY, WHEELS AND TIRES. The E-Revo Brushless Edition comes with the same sleek body as the non-brushless version. On the back of the truck is a wing that can be adjusted. The included wheels and tires are Talon tires pre-glued on black chrome Gemini rims. These new rims feature splined hexes that securely lock the wheel to the splined aluminum hex hub.
FEATURES
ADDITIONAL IMAGES AND VIDEO ONLINE @ RCCARACTION.COM/REVOBL
Traxxas includes two 2075 waterproof servos that are each good for 125 ounces of torque; combine that, and you’ll have 250 ounces of steering power. The receiver comes in a waterproof radio box. The new radio system from Traxxas features 2.4GHz technology and a
micro 4-channel receiver. The radio looks like a standard TQ AM radio but is now 2.4GHz, which means no glitching or interference and not having to worry about crystals. The heart of this truck is the Castle Creations Mamba Monster speed control and motor. The motor is a 2200kV Neu-Castle brush- less motor that rides on high-quality ball bearings. It features a 5mm shaft and supports up to 18-cell Ni-Cd/NiMH and up to 6S LiPo. The continuous current is rated at 120 amps. It has a built-in heat sink and fan that automatically turn on if the speed control hits 150 degrees. For the full review of this brushless system, check out the February 2009 issue of RC Car Action magazine.
INCLUDED ELECTRONICS & ACCESSORIES
JULY 2009 63
VERDICT At the end of the day, I didn’t want to put the E-Revo Brushless Edition away. It was pure fun to drive, whether I was popping wheelies, jumping through the air, or racing around the track. It definitely achieved its mission: to provide a ton of excitement on or off the track. Bashers will appreciate the durability, speed and ability to do wheelies all day long. Racers will enjoy the same great suspension and chassis layout as the origi- nal E-Revo, which turns into a capable racer with only a few tweaks. With the maintenance-free brushless system and the reliable 2.4GHz radio and receiver, this is one sick monster truck that comes with everything you wanted—and more.
Tim Roberts is the lead designer behind the E-Revo Brushless Edition. When we sat down with him for a quick interview, this is what he had to say:
Radio Control Car Action: Did you design the original E-Revo to handle this much power? Tim Roberts: Absolutely. E-Revo was always intended to use a high-power brushless system. When we began devel- oping the platform, there was not a simple drop-in system like the Castle Mamba Monster speed control and 2200kV motor, but we knew that high-voltage, high-output electrics were the wave of the future, and the truck was designed with those things in mind. The entire architecture of the chassis was based around placing a large and powerful motor in the vehicle as low and centralized as possible. The transmission and driveline underwent rigorous review to ensure they could handle all the power that was capable of fitting into the bat- tery compartments. We even added details such as the finned-aluminum motor mount and vented battery compart- ments to improve thermal efficiency of the motor and batter- ies. We spared no details when it came to designing the truck to handle as much power as we knew our customers would be throwing at it.
RCCA: Do you think the E-Revo Brushless Edition is at its limit, or do you think it could handle more power? TR: I think the E-Revo Brushless Edition is at a sweet spot right now. With NiMH packs or 4S LiPo, the truck is extremely fun, fast and virtually maintenance free. With 6S LiPo, even the most hardcore enthusiasts have been delighted with the extreme acceleration and speeds the E-Revo can handle. The best thing about it is even with a 65mph setup, the truck is never more out of control than you want it to be. I think any more power would probably just ruin that balance.
RCCA : Do you think we’ll see more powerful brushless systems in the near future? And are the current ones
being utilized to their full potential? TR: The one steady trend I see in RC is that there are always more powerful products entering the market every year. The trick is being able to use all of that
power effectively. This is where E-Revo Brushless Edition excels,
since it was always intended to work with such powerful
systems. Our customers have extremely high
expectations, so when we release a new product, you can bet that we hold nothing back in terms of all-out performance.
Radar Testing Traxxas claims an impressive 65+mph, so I had to see which numbers I could get myself. Traxxas got its numbers using a wheelie bar, MaxAmps.com 3-cell LiPos (6S), a 54-tooth spur gear and 24-tooth pinion gear. Some weight was also used up front to keep the front end from lifting. I installed the spur gear and pinion along with MaxAmps.com 30C 5250 3-cell LiPos and headed to the largest parking lot we could find. I added 0.8 lb. of weight to the front and moved the wheelie bar to the lowest position. I did a couple passes and got that magic number—65.4mph—for which I had to roll on the throttle to keep the truck under control. For comparison, check out the radar graph, where we included the radar curve for a standard dual Titan 550 brushed motor E-Revo that hit a top speed of 29.4mph using two 7-cell packs. What a difference in speed! The E-Revo Brushless Edition delivers an incredi- ble top speed that is more than twice as fast.
The 6S LiPo setup is for pure over-the-top performance. It is fun to unleash that kind of power every once in a while, but we found that using 4S LiPo or two 7-cell packs still gave awesome power and are the best choice for all-around driving.
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0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
WITH TIM ROBERTS BEHIND THE DESIGN
1. A Traxxas-designed hold-down keeps the Mamba Monster speed control securely in place. 2. The Neu-Castle motor is attached to a finned aluminum mount that helps to keep the temperature in check . 3. Traxxas provides a waterproof case for the 2.4GHz micro receiver . 4. Heavy-duty telescoping driveshafts and medieval-looking splined 17mm aluminum hex hubs key into the wheels for an extra robust drivetrain. 5. Traxxas spec’d its proven hard-anodized, Teflon-coated shocks that will smooth out the roughest of terrain.
1
2
3
4
5
, m
SOURCES MaxAmps.com maxamps.com Traxxas traxxas.com
Distance (in feet) traveled in: 1 sec. 16.3 17.2 2 sec 57.6 53.1 3 sec. 114.2 94.6 4 sec. 182.2 137.6 5 sec. 261.1 180.2 0-132 ft. time 3.3 sec. 3.9 sec. Time to top speed 7 sec. 3.1 sec. Speed at 132 ft. 44.3mph 29.3 mph
65.4mph 29.4mph
TOP SPEED
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60 MORE FROM THIS ISSUE AT RCCARACTION.COM TRAXXAS E-REVO BRUSHLESS EDITION We tear it up with Traxxas’ mightiest monster WORDS BRANDON WILCOX PHOTOS HOPE McCALL When the original E-Revo came out, people were stoked. It had everything they craved: brushless-ready drive- train, inboard shocks, integrated battery components and waterproof electronics. With the new Brushless Edition, you get every- thing you wanted and then some. The brushless-ready drivetrain is now powered by a beefy Castle Creations 2200kV motor and Mamba Monster Speed control, which deliver tons of torque and an incredible top end that reaches 65mph and beyond. The speed control is secured to the chassis with a Traxxas-designed hold-down. Traxxas also jumped on the 2.4GHz revolution. No more AM radio here; the new TQ may look like the original, but it’s now operating in the glitch-free, crystal-less 2.4GHz band. With more power comes more stress, and this new truck includes heavy-duty 17mm splined aluminum hex hubs that are held on with set- screws to beef up the drivetrain. With tons of power on tap and a race-proven setup, this truck will be sure to please the basher or racer in you. Follow along as we give you the ins and outs of this truck. WORLD EXCLUSIVE! SPECIFICATIONS Type 1 /10-scale RTR 4WD electric monster truck Price $665 (varies with dealer) Top Speed 65mph Wheelbase 14.1 in. (358mm) Width 16.5 in. (419mm) Weight, as tested 9.5 lb. (4,330g) w/o batteries Spur/pinion 65/18 Final drive ratio 18.8:1 Chassis Molded composite nylon tub Differential(s) Sealed bevel gear Suspension Sealed pivot ball w/ inboard-mounted shocks Shocks Hard-anodized, Teflon-coated shock body with titanium-coated shock shaft Traxxas Revo BL 4/23/09 11:49 AM Page 60
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