Hobbico Nitro Hammer Assembly And Operation Manual Download Page 7

equipment  to  get  wet,  you  must  do  the  following
immediately: Remove the battery pack and radio equipment
from  the  boat. Allow  the  components  to  air  dry  completely
before reassembling. Reinstall the components and check for
proper operation before running the boat in water.

If you are thinking about modifying your Nitro Hammer, keep
this  in  mind:  A  tremendous  amount  of  research  and
development  has  gone  into  the  Nitro  Hammer  with  speed,
stability,  maneuverability  and  run  time  as  our  primary
considerations. Therefore, many of the modifications that you
may  try  in  order  to  increase  speed  will  probably  result  in
decreased  performance  in  other  areas.  We  think  our
combination of engine and propeller is close to optimum for
a boat of this type, so we suggest that you accept those items
without change.

Listed below are some ideas to help you “trim out” your boat
to get the best performance:

•  Cut  a  1"  diameter  hole  above  the  carburetor.  This  will
improve airflow to the carb and increase top end speed.

• Wax the hull with a good quality, non-abrasive automotive
wax,  such  as  “carnauba  wax”. This  will  reduce  the  surface
tension (resistance) between the hull and the water, allowing
the boat to move faster.

• Adjust the trim plates up or down to maximize speed. There
is a fine line between fast speeds and optimum handling. If
the  boat  tends  to  “porpoise”  (meaning  that  the  nose  of  the
boat  bobs  up  and  down  on  straights),  bend  the  trim  plates
down slightly. Repeat this process until it stops.

•  Sharpen  the  leading  edge  of  the  rudder.  This  will 
reduce resistance.

Although  it  is  very  enjoyable  to  go  out  and  run  the  Nitro
Hammer by yourself, we think the real fun and excitement is
experienced when you get involved in 

RACING!

Racing  does  not  have  to  be  an  organized  and  sanctioned
competition  to  be  fun.  In  fact,  small  informal  races  can  be
very exciting without the stress that comes with formal events.

Here are some suggestions for setting up a simple racecourse
for boats:

• Make 2 to 4 simple and inexpensive 

“marker buoys”

with

empty milk jugs, string and heavy objects for anchors, similar
to the above sketch.

RACING

PERFORMANCE TRICKS AND TWEAKS

7

Summary of Contents for Nitro Hammer

Page 1: ...ices 1610 Interstate Drive Champaign Illinois 61822 Attn Service Department Phone 217 398 0007 9 00 am 5 00 pm Central Time M F E mail hobbyservices hobbico com HCAZ3012 for HCAB26 Entire Contents Copyright 2002 ASSEMBLY AND OPERATION MANUAL Before Building We want the assembly and operation of this boat to be a success so BEFORE removing any parts from the parts bags please read this manual thoro...

Page 2: ... Model engines like automobile engines exhaust deadly carbon monoxide Run your engine only in an open area Model engines generate considerable heat Do not touch any part of your engine until it has cooled Touching the muffler cylinder head or exhaust header may result in a serious burn Use safety glasses when starting or running engines The propeller may throw loose material such as sand or gravel...

Page 3: ...ers Decals have been provided for your Nitro Hammer Simply cut them out peel and stick See the photos on the box for decal placement Carefully remove your Nitro Hammer from the box and place it atop the pre built boat stand Remove all remaining components from the box You may wish to keep the box in order to more easily transport and store your Nitro Hammer Transmitter Assembly 1 Remove the transm...

Page 4: ...el to the right The back of the rudder should move towards the right If this is not the case simply move the steering servo reverse switch to the other position 2 Squeeze the trigger on the transmitter this should open the throat of the carburetor Conversely moving the trigger forward will close the throat completely 3 The adjustable steering rate knob labeled D R located atop the transmitter see ...

Page 5: ...n 1 Use the same fuel that you will use for normal running 2 Resist the urge to accelerate and decelerate the boat quickly 3 Break in puts stress on the glow plug and you can burn it out during break in Make sure you have an extra plug or two on hand How To Stop Your Engine Just as squeezing the throttle trigger on your transmitter increases power pushing the trigger the opposite way decreases pow...

Page 6: ...ace the fuel line Another symptom of a leak in the fuel line is a surging engine The properly tuned engine will surge when the air bubbles enter the carburetor It is basically leaning out the mixture Overheating One of the worst things you can do to your engine is overheat it The oils that lubricate the engine are carried in the fuel If your engine is set too lean there will not be enough oil in t...

Page 7: ...e carb and increase top end speed Wax the hull with a good quality non abrasive automotive wax such as carnauba wax This will reduce the surface tension resistance between the hull and the water allowing the boat to move faster Adjust the trim plates up or down to maximize speed There is a fine line between fast speeds and optimum handling If the boat tends to porpoise meaning that the nose of the...

Page 8: ...t is missing parts contact Hobbico Product Support Order Item HCAB8701 Rudder Assembly HCAB8600 Radio Box HCAB6901 Fuel Tank HCAB9040 Trim Tabs HCAB7850 Shaft Set HCAB7000 Hatch White HCAB6501 Engine Mounting Plates HCAB6301 Decal Sheets HCAB7800 Pushrod Linkage Set HCAB7750 Propeller 2 ORDERING REPLACEMENT PARTS The Engine Starts Does it run continuously It should be ready to go Is the high speed...

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