O.S. Engines 18TZ(S)-T - Manual (Page 52)

GUARANTEED TO
KEEP YOUR R/C CAR
RUNNING WELL
(Continued)
(CONTINUED)
Here's how to prevent rust;
• At the end of the day's running, pull the fuel line from the engine.
• Drain the tank, and then start the engine.
• Let it run until it's absolutely dry of fuel.
•Add several drops of an after-run oil. There are several after-run
oils on the hobby market. You can also make your own from a 50-
50 mixture of "Marvel Mystery Oil"™ and automatic transmission
fluid.
•After adding the after-run oil, turn the engine over several times
to make sure it's worked into all of the engine's internals. Add
more if you are not sure that you put in enough.
KEEP GOOD POWER
Nitro, or Nitromethane, is the main power ingredient in model fuels.
Raising the nitro content will make the fuel "hotter"— that is, allow
the engine to develop more power. More is better, right? Not really.
•Unless your engine is designed and ported for high-nitro
fuels, you won't see much gain in performance above 20%-
25%.
•While some people are running nitro levels as high as 50%,
they have modified their engines to handle it. They've also
carefully blended their fuel to make sure they have enough
oil.
•The best performance enhancer is a good driver. A driver
who can keep the car on the track will usually beat a less
experienced driver with a hotter set up.
KEEP IT SMOOTH
When you tighten the pilot shaft onto your flywheel, it can be hard
to keep the engine from turning over. It may be tempting to stick
something into the exhaust port to keep the piston from moving,
but do not do this! You'll also put a nice "ding" in the piston and in
the cylinder liner. You've just ruined your nice, new engine. A new
ABC piston/cylinder assembly (the most commonly-used kind in
R/C car engines) will put a nice hole in your pocketbook.
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