Racing delivers another robust race ready Short Course Truck,
RTR. Out of the box, this truck is ready to lead the pack.
Whether it's speeding down the street or flying through the
tightest turns at your local track, the Blitz RTR is ready
Turnigy Trackstar 17.5T Brushless Sensored
ESC: Castle Creations Mamba Max Pro
Servo: Hobbico CS-170
Radio/Receiver: Spektrum DX3E/SR-300
Battery: Gens Ace 5000mAh 65C
Battery Charger: Thunder Power R/C TP610C AC/DC
Body: Custom Painted Skorpion
Tires: Suburbs 2.0 SC 2.2"/3.0" M3 (Soft)
Wheels: Pro-Line Split Six 2.2/3.0 One-Piece Wheels (Black)
Shocks: HPI Blitz ESE Aluminum body, oil filled
Chassis: RPM Front Suspension Arms & Bulkhead, Blitz ESE Firm
Rear Suspension Arms, Blitz ESE Ball Cups, STRC Front & Rear
Chassis Brace, STRC Finned Aluminum Motor Mount, STRC Aluminum
Steering Bellcrank Set
chose quality components to make the Blitz a top notch short
course truck. The 15T Firebolt brushed motor, waterproof ESC,
waterproof servo, 2.4GHz pistol grip radio, composite body
oil-filled shocks, satin chrome wheels, Maxxix Trepador D-compound
tires, Plazma 7.2V battery pack, and wall charger make the
Blitz RTR a serious basher and an entry level racer. I have
been racing for some time now and I demand more from my race
truck than the stock components could offer. The upgrades
I have chosen turned the HPI Blitz RTR into a racing truck
ready to win.
I am writing this review as the truck sits
now, a competitive racing machine! I will discuss what led
me to install the performance parts I chose and compare the
performance of the stock vs. the aftermarket parts.
Tires, and Drivetrain:
The HPI Blitz RTR comes with a quality set of wheels and tires.
The Maxxix Trepador D-Compound tires are among the best for
bashing. They offer long lasting tread for those speed runs
down your street. Although, they are good all terrain tires,
I needed more traction to be competitive on my local race track.
For this, I have chosen Pro-Line Suburbs SC 2.0 Tires. For the
track I race on, they offer substantial traction improvement.
These tires are solely for the track. If you run these tires
on the street, they will become bald quickly.
The stock MK10 chrome wheels are a great choice. Not only do
they look awesome with the simulated bead locks, but they are
also durable. The wheel hexes are tough and won?t strip out
easily. I only chose a new set of wheels to make it easier to
install the new tires. Trying to unglue and re-glue a new set
of tires to a used set of wheels can be a real challenge. As
a rule of thumb, I always buy new wheels when I buy new tires.
Combine good traction with a bulletproof all metal gear transmission
and you end up with a truck ready to win. The Titanium top shaft
and lightweight slipper/spur carrier reduce rotating mass to
use every ounce of power available. The universal drive shafts
allow for aggressive suspension settings. One of the major benefits
of the Blitz is the available firm high impact ball cups. I
have yet to pop off a ball cup on this tough truck. It's even
difficult to get the ball cups off while it's on the work bench.
There is nothing worse than being in the lead and something
simple like a ball cup pops off.
HPI included the trailing and in-line steering blocks. These
options are great to have as they let you choose whether you
need more steering on or off throttle. I chose to use the
inline steering blocks. They offer more off-power steering,
which I like better on the tight technical track I race at.
Plastic steering racks often flex under great power. When
installing a strong servo, a metal steering rack is needed.
It allows the servo to deliver a large amount of power consistently
and with precision to the wheels. STRC offers a very strong
Aluminum steering rack. It is a great addition to the Blitz.
It has an adjustable servo saver that will help protect the
gears in your servo. It?s all aluminum construction doesn?t
allow any flex and remains tight under all conditions.
The stock SF-10W Waterproof servo is a quality budget servo.
Having a waterproof servo is great in case you hit a huge
puddle or like driving in the rain and snow. A waterproof
servo is not needed for racing. The plastic gears in the SF-10W
often cannot take the abusive conditions that go along with
racing. I like to use a strong and fast servo for racing.
For this, I chose the the Hobbico CS-170 steering servo. At
six volts, this servo boasts an insane 333oz-in torque with
a speed of 0.15 seconds. The CS-170 can actually walk the
Blitz forward from torque alone! Overkill? Not if you and
your rival are trading paint on the final turn. That extra
torque may be what it takes to win the race. The stock front
suspension arms (also called a-arms) and bulkhead on the Blitz
will get the job done. But I noticed a small amount of play
between the suspension arms and the bulkhead. This was especially
prevalent after installing the high torque CS-170 servo. The
servo would actually pull the suspension arms toward the rear
of the truck when turning all the way left or right. I ordered
the RPM Front A-Arms and Bulkhead Kit. It was amazing to see
the difference after I installed this kit. The a-arms don?t
pull back anymore, keeping the steering geometry consistent.
The HPI Blitz RTR includes one of the best RTR radio?s available,
the HPI TF-40 2.4GHz. Some of the features offered by the
TF-40 are steering dual rate, steering & throttle trims, and
steering & throttle end points. In my opinion, having adjustable
steering & throttle end points are one the most important
features a radio can have. It allows you the set how far the
servo will turn. Since the turning radius of every vehicle
is different, this allows you to get maximum turning without
damaging your servo. I opted to use the Spektrum DX3E radio.
It does not have any significant advantages over the HPI TF-40,
I simply prefer the ergonomics of the Spektrum DX3E. The Spektrum
DX3E has interchangeable grips that allow you to adjust the
size of the handle to fit your hand.
HPI included a nice set of composite body oil-filled plastic
shocks. These shocks are more than adequate for both bashing
and racing. I decided to install the Aluminum shocks used on
the HPI Blitz ESE. The Aluminum shocks are much stronger and
allow for an additional Delrin washer that reduces shaft movement
and friction. The Delrin washer also helps to prevent shock
fluid from leaking out around the shock shaft. I also prefer
the dual Aluminum pre-load collars on the Blitz ESE shocks over
the single plastic pre-load collar on the Blitz RTR shocks.
The dual pre-load collars can be tightened against each other
to ?lock? them in place. This allows a consistent ride height
that will remain set throughout your bashing sessions and races.
The HPI Blitz stock Firebolt 15T brushed motor will propel
the Blitz RTR to top speed quickly. It has more than enough
power to tear up the local park or race track. Combine the
Firebolt 15T motor with the SC-15WP waterproof ESC and the
Blitz RTR will fly over jumps and smash through puddles and
keep coming back for more. I?ve chosen to use a Turnigy Trackstar
17.5T sensored brushless motor combined with a Castle Creations
Mamba Max Pro ESC to power my HPI Blitz. The Turnigy 17.5T
sensored brushless motor delivers so much power that this
truck can easily launch you to the front of the pack. I prefer
using a sensored motor because you can easily feel the sensitivity
of the throttle. On very tight technical tracks, this can
play a huge factor. The Castle Creations Mamba Max Pro is
an amazing ESC. With a built-in fan, you won't have to worry
about over heating this beast. Pick up an optional Castle
Link to see the performance this ESC is really capable
of delivering. It can run C.H.E.A.T. mode timing boost and
a whole array of other tuning options to give you that extra
edge when you need it most.
The Blitz corners well and rarely rolls over. Although, it does
tend to powerslide through the turns on the track, it's not as noticeable
on pavement. Possibly adjusting the differential fluid would alleviate
With just over one inch of ground clearance, it's just not enough
to enjoy driving in the grass. Most of my time in the grass was
spent spinning out trying to gain some momentum, which can cause
the electronics to overheat. Now let's move to the dirt, where this
truck truly shines.
Alright, now we're having fun. Whether you're spraying dirt at your
local track or the nearest construction site, this truck loves the
dirt. Like I said before, this thing does not roll easily. You have
to put some serious effort in to making it roll. So dirt is where
you will find me and my Blitz most often.
Now the Blitz could very well be the toughest short course truck
around. For this reason, jumping is where I had the most fun with
my Blitz. Since the motor is mounted on the left, I mounted the
ESC and receiver on the right and moved the battery as far left
as I could, hoping to achieve a decent balance point. Now the truck
stays pretty level in the air. With a 17.5T motor, it's harder to
level it out with throttle. I use more or less throttle on take
off to keep the truck level. But even in the hands of a beginner,
you will have no problem enjoying this truck mid air!
Lack of rolling is a great thing. I would like to see some more
tuning options such as a sway bar kit. But at the end of the day,
the Blitz handles pretty darn good in most enviroments, with the
exception of grass. If you are a grass basher, consider some larger
tires and raising the ride height...at the expense of rolling over
Blitz in Action
getting some track time at my local speedway with the Blitz,
I have a lot of confidence in HPI. The Blitz puts down consistent
laps back to back. The suspension is smooth and predictable.
Combined with a sensored Turnigy Trackstar Motor, the throttle
is very smooth and allows for precision power in and out
of the turns.
HPI Racing has out done themselves once again. The Blitz
is a tough truck that can take a serious bashing. All while
being capable of hanging with the best on the race track.
Whether you want to bash or race, this truck will not only
impress your friends at home, it can get you on the podium
at the track!
in to your local hobby shop and pick up an HPI Blitz, you
won't regret it.
Exclusively By: Great Planes
1608 Interstate Drive
CHAMPAIGN, IL 61820
Support Phone: (217) 398-3630
Product Used: Blitz
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.