| How
should I clean my RC Car?
There are a few tricks that can make cleaning your car much easier
than you might think. For dust and debris that is not oily at all
you can use a dry paint brush. K-Mart sells a set of 3 brushes for
about $5. They work great for getting dirt out of the tight spaces
in an RC Car! For a really dirty car you can take a leaf blower
to it before using the paintbrush. Keep the end of the leaf blower
at least a foot or so from the car and of course remove the body
before you begin! If the car is oily it is best to use a cleaning
product like windex or an automotive degreaser. I find it easier
to take the car apart to some extent, remove the gas tank, remove
the radio tray, take the wheels off, etc. to make it easier to clean.
And once or twice a year you should consider tearing the whole car
down not only to clean it but to thoroughly check for worn or broken
parts. If you wrap an old t-shirt or shop towel around a flathead
screwdriver a few times you can often get into tight spaces and
remove that hard to get at gunk.
My
Nitro Car won't start?
There are only a few things that have to happen to make your car
start so let's check them first. Do you have gas in the tank and
is it filling the fuel line all the way up to the carburetor? If
you just ran your car completely out of gas then it will take a
few presses on the gas tank primer to get fuel up to the carb again.
Or if you do not have a primer it could take 5 or 10 seconds on
a starter box or 30 or 40 pulls on the pull starter! Sometimes I
will pull the fuel line off of the carb and hold the end lower than
the tank so that gas drips out, then quickly place it back on the
carb. That will ensure that fuel is in fact in the fuel line and
up to the carb.
You
also need a good, strong glowing plug. To check for this, remove
the glow plug and connect the ignitor to it, hold the plug with
a pair of needlenose pliers to avoid burning your fingers! Just
connect it for 2 or 3 seconds, you will know pretty quickly if the
plug is good or not. If the plug glows bright red then it is fine.
If not, replace it with a new one. This test will also dry off a
wet plug if your engine was flooded, another reason why your car
might not want to start. On that note, turn the engine over a few
times while you have the glow plug out to make sure that any excess
gas is removed from the engine itself. Do not look into the hole
when you turn it over since fuel might shoot out as you turn the
engine over! This is especially true if you are using a starter
box since it will spin the engine so quickly. Put the glow plug
back in the engine and try again.
If
your car still won't start then the mixture adjustment screw might
be set wrong. When the mixture setting is suspect, I like to set
it back to the original factory setting which is normally 2.5 turns
out or counterclockwise after you have turned the screw all the
way in. When you tighten the screw make sure you are gentle, don't
wrench the thing down, just turn it nicely until it stops, then
back it out according to the owners manual. Remember, once you make
this adjustment your car will be running rich like it did for the
break in period. If your car starts you will want to slowly turn
the screw back in until optimal temperature and speeds are reached.
It's just like the break in but you can make adjustments and take
a lap, make adjustments and take a lap, etc. as opposed to burning
a whole tank of gas after each adjustment. Make sense? You want
the setting to be more lean than the factory setting but not too
lean to where your motor burns up. Lean means less fuel for the
same amount of air so the motor runs hotter and your car will be
faster. Running a little on the rich side means more fuel for the
same amount of air, this is where you see white smoke under acceleration
since some of that extra fuel (which has oil in it) is burning out
the exhaust. Your mixture screw(s) adjust the amount of fuel, the
air flow is adjusted by opening or closing the throttle.
There
is also the chance that your engine has no compression anymore.
If you have run through 3 or 4 gallons of fuel you might consider
this as a possibility. I have seen engines go out after 1+ gallon
and other make it through 7 or 8 gallons. It all depends on how
well that exact motor was built, how much oil content your fuel
has, and how rich or lean you run your motor. If you have no compression
then you need to buy a new motor or rebuilt the one you have. Your
local hobby should be able to help you decide which way is a better
investment. A new piston and sleeve are not cheap but will have
your motor back in new condition. In fact, you have to break in
a motor again after re-building it
In
general, always make sure your air cleaner is clean and never, ever
run without one. Let your engine warm up for 30 seconds or so before
hammering on the throttle. Use the same fuel all the time, like
O'Donell 10% Nitro or Blue Thunder 20% Nitro etc. You may have to
adjust your fuel mixture settings if you change fuel brands or nitro
content. Never remove your header when the motor is still hot. This
should be hard to do anyway w/o burning your fingers but I have
to say it. If cold air rushes into the motor it can cause damage.
And when the engine is 300 degrees even 90 degrees is cold air!
Batteries
are costing me a fortune!
Make the investment in rechargeable Ni-Cads or Ni-Mh batteries and
charger. The batteries are about $3-$4 each and the charger is about
$20. For your car I highly recommend a 5 cell hump pack or flat
pack depending on what car you have. These are not cheap, $35-$50,
but they can last a whole day and can be used over and over again.
Plus the packs can be secured in the car permanently. This way you
never have to worry about your battery pack coming out (it's happened
to all of us!) and watching your car smash into a tree! That will
cost you more than a battery pack ever will. So spend the money
up front on the rechargeables, you will save a ton of money in a
short amount of time.
Which
Car Should I buy?
This is never an easy question. Let's assume that you want a Nitro
car. HPI is one of the most popular cars out there. Their racer
kits and Ready-ToRun (RTR) kits are affordable and somewhat durable.
The HPI cars are really designed for the beginner-to-Intermediate
hobbyist though. I started out with an HPI RS4 RTR and have since
progressed on to a kit car, one that needs to be fully assembled
and you choose the servos and radio to use. Most racers follow a
similar patter, start with HPI then progress to a more advanced
kit, usually more expensive too! Mugen's MTX-3, Serpent's Impulse,
Yokomo's GT-4, Associated's Nitro TC-3, are all similar. These cars
are more expensive but they will pay off in the end. The parts hold
up better for one thing. People say that RTR kits are no fun because
the car is already built. That's simply not the case. I had my HPI
RTR car apart and back together countless times. You can download
the entire owners manual from HPI's web Site to assist with rebuilding
the car . The higher performance cars do not usually come RTR but
more and more you are seeing an RTR version being offered like the
Nitro TC3. Still, the kit versions once assembled will always outperform
the RTR version of the same car.
The
reviews out there are helpful but don't lose track of what you need.
Some cars are bashed in a review because of something that would
never make a difference to you anyway so who cares? Shop with an
open mind and remember that you usually get what you pay for. Things
are cheaper for a reason. RTR kits are a great deal but everything
on them will be entry level from the Servos to the included AM radio.
But when 3 or 4 of your friends all buy the same Kit and go race
each other it becomes a battle of pure drivers skill and a whole
lot of fun! That is how I got started into all of this racing stuff.
You have to experience the thrill of going head to head with your
buddies around the track even for just a few laps and you will be
hooked! Whatever you buy, take it to your local track and give racing
a try. You will learn quickly, everyone was new at one point and
will want to help you at the track, and believe it or not the track
is not as hard on your car as the giant parking lot where you are
constantly going full speed, full brake, full speed, and so on.
So
buy what you can afford and make sure you add up everything you
need before you start buying anything. The non ready to run or 'kits'
will not come with servos or radio gear. If you want one of those
kits decide what servos and radio you want and add it in the price.
If the car you buy does not come with a motor (rare these days)
decide which motor you want to run and add it in there. Same goes
for an extra set of tires (why not just face the inevitable, you
will wear out tires), fuel, spare glow plugs (just the break in
process can burn up 1 or 2 plugs), Fuel filler bottle, paint for
the body, glow plug ignitor, batteries, and some basic
tools to keep your car tuned and running throughout the
day like small allen wrenches and small screwdrivers.
What
Upgrades should I buy?
If you have an HPI car the list is endless. 2-Speed Transmission,
Graphite radio plate, CVD's, Racing clutch, Fiber Disc Brake, better
engine & pipe, and so on. See my HPI
RS4 page to learn more about these upgrades and what you
may or may not want to buy. The more advanced cars will come ready
to race (not Ready to Run) so the options for these cars make less
of an impact to the overall performance, kind of "Fine Tuning"
upgrades. Mainly, changing the shock springs, repacking the front
and rear diffs with different thickness grease than what the cars
come with, and titanium or aluminum replacement parts (usually I
buy these when the stock plastic parts break).
Do
bodies make a difference?
Absolutely! And if you want to spend money on something just to
spend money, buying different bodies for your car is the way to
go! You will eventually need them since racing will tear up these
lexan bodies over time. Don't worry, a body can last for a while
even if you are a bad driver! Most racers feel that the Dodge Stratus
Body makes the car handle the best. Always install the rear spoiler,
it will help the handling, it's not just for looks. For ease of
painting and overall usability I like the BMW 328i body and the
Porsche 911GT3 body. But any body will work so have fun with them!
HPI's web site offers the best selection of 200mm wide bodies with
excellent photos.
What
if my pipe falls off while I am driving?
If your pipe falls off you should bring your car in and either shut
it off or push the pipe back on while wearing gloves. Besides being
really loud and usually against the rules at most tracks, running
w/o the pipe connected can damage your motor. Once the pipe falls
off for the first time you will need to take some time to put it
back on properly. On race day or just to get you by for the day,
push the pipe back on as mentioned above to keep you running. But
the right thing to do is to pull the rubber connector off, clean
the connector, pipe, and manifold thoroughly with a degreaser, let
them all dry, then put the pipe back on and use 2 small zip ties
around the rubber boot where is goes over the pipe and the manifold.
If the boot is tightened on a clean surface the rubber forms a kind
of bond to the metal which will be a big help in keeping the pipe
on your car.
How
do I become a better driver?
The best way to become a better driver is to practice, practice,
practice. Get used to your car. Learn how it handles based on how
you have it set-up. Get the brakes dialed in to where you like them.
Sometimes having too much brake is a bad thing. And not enough brake
can cause you to crash. Don't try to see how fast your car can go
right away. If you are not running on an actual track, set up some
cones that you have to drive around. We started out with 5 or 6
cones in a simple pattern like you see below. Try to time yourself
or have a friend time you and call off your lap time each time you
pass a certain point. Try to keep improving your time, drive different
lines like by making wider turns or tighter turns, brake and accelerate
more or less each time at different points to see if your time is
improving or not. You will find out very quickly that one spin out
or crash and your time will get much worse! So control your car
and be patient. These cars are a lot slower when they are upside
down J If you are in the Chicagoland area then come out to our track
and give racing a try. We have a novice class for beginners and
plenty of time to practice before and between races. Once you experience
the thrill of running side by side with 2,3, or 4 other cars, you
will never want to go back to the Target parking lot again!

What
should I bring with me to the race track?
The basics are Fuel, Charged up batteries in your car & radio
plus a spare set of AA's for your radio, basic tools which include
a 4 way wrench for the tire lug nuts, a glow-plug wrench, a small
phillips & flat head screwdrivers, needle-nose pliers, zip-ties,
fuel filler bottle, spare glow-plugs, and a spare set of belts if
your car is belt driven if you have the extra money to spend. For
a detailed breakdown of tools
you should consider buying click here.
To
take it a step further, a 12V car battery and Battery charger for
your cars hump pack, spare clutch, extra tires, spare dogbones,
an extra set of crystals for your radio in case someone else shows
up using your channel, a table to work on, chairs, lunch (most tracks
just sell pop,water, and maybe chips), and a positive attitude!
Racing can get competitive but we are all doing this to have fun.
Where
should I buy my R/C car and/or parts from?
You can find a lot of sites that sell RC products on-line, everything
from kits to hop-ups. Often times you will find guys that are just
starting out by making 1 or 2 parts for say a T-Maxx or a Mugen
MTX-2. These guys could eventually be the next MIP,
Robinson Racing Products,
and so on. They usually have a machine shop at work or at home that
they use to make aluminum or titanium replacement parts. A good
way to locate these guys is by going to e-bay
and searching in the remote control section. Of course there are
thousands of items on e-bay everyday. To find parts for your particular
car or an entire assembled car, try using the search tool provided.
Another
site is Tower Hobbies On-line.
This site offers great information about what parts are compatible
with what along with photos of most parts and of course prices.
They are in Illinois so if you order from them outside of IL you
can save the sales tax! You do still pay shipping so don't be too
quick to forget about your local hobby shop. And if you go to your
local shop and get help from a sales person and they stock the product
you want then buy it! We all need to support our local brick and
mortar shops!
That
should cover it. If you can't find what you need from your local
hobby shop, Tower Hobbies, and e-bay, then they probably don't make
it!
What's
the different between 1/8th scale, 1/10th scale etc.?
There are many scales of cars out there 1/4, 1/5, 1/8, 1/10,
and 1/12 are the most common Radio Controlled cars. 1/4th and 1/5th
scale cars are big and expensive. They are always gas powered and
run a 23cc or bigger chainsaw type engine. Go to the 1/5th
scale page to learn more about these really cool cars.
1/8th
scale cars are much smaller than ¼ and 1/5, a little less
expensive, but really considered to be the highest performance class
in R/C. For on road you have 1/8th scale cars like the Serpent
Vector and Mugen
MRX-2. These cars use a .21 size motor that can put put
as much as 2.5hp or more! These cars race in their own class and
can hit speeds in excess of 60mph. For on-road they run wide foam
tires which can wear quickly and be expensive to keep fresh. You
have to check out a race, these cars are amazing! For off-road you
have the buggies which also run a .21 engine and a wide variety
of tires. These cars will cost you anywhere from $500-$2000 to get
into. My Mugen
MBX-RR kit was $475 + $180 for 2 servos, $100 PCM receiver,
$45 5 cell hump pack, $275 RZ-V99B
OS Engine, and $70 for a spare set of on-road tires and
wheels = $1145. I did not count my Futaba
3PJS Radio that I already owned ($300), or paint and glue
for the body and tires (about $10). These cars are the ultimate
thrill though. They will run circles around a T-Maxx
and take jumps that would send most 1/10th scale trucks to the R/C
graveyard. 4 wheel drive, super heavy duty parts construction, lots
of aluminum, low center of gravity, and really fast, make these
buggies a must have for off-road enthusiasts.
1/10th
scale cars are probably the most common scale out there. The recent
popularity of on-road Nitro touring cars has been a big boost to
the hobby. These "TC" cars are 4 wheel drive and run a
variety of tires varying in width from 22mm to 30+mm. Kits can cost
as little as $280 for everything you need including radio, servos,
body, motor, etc. These kits are called RTR or Ready-To-Run kits.
HPI owns the market
for these RTR cars and for good reason, they make an affordable,
easy to maintain car, what more do you need to get into this hobby?
For more advanced enthusiasts there are plenty of kits that come
un-assembled and without key parts like motors and servos. This
gives the owner a chance to pick and choose exactly what he needs.
I recommend a fast, strong servo for steering and a basic servo
for the throttle. Airtronics,
Futaba,
and JR make great servos.
For the throttle, go cheaper if you can, a fast servo is not necessary
here. But remember this is your brake also so for faster and/or
heavier (1/8th) cars make sure there is good torque to pull the
brake hard. |