DeAGNOSTINI MODEL SPACE Red Bull Racing RB7 Manual page 7

Red Bull Racing RB7: Step by Step
When you pull the trigger of the transmitter all the way back towards the
handle, the throttle linkage must open the air intake of the carburettor
completely. The brake rod at the other end of the servo horn moves
unimpeded through the eye of the brake lever.
When both servo horns have been zeroed, you can again
switch on as described above (first the transmitter, then the
car's power switch). The horns should now be in their
neutral positions. Minor discrepancies (up to 5°) from the
zero positions described above are not serious, and you can
adjust them by using the throttle and steering trim controls
on the transmitter (see the upper photo on page 433) to
offset them slightly.
THROTTLE/BRAKE CHANGEOVER
Now that the servo horns have been perfectly aligned, it's
important to ensure that their alternating movements are
transferred optimally via the linkages. Of particular interest
here are the throttle and the brake linkages.
Let's look at the operation of these two opposing
mechanisms more closely. To do this, first remove the air
filter so that you have a clear view of the carburettor inlet. If
you haven't already done so, switch on the RC system and
pull the trigger of the transmitter all the way back to the
handle (full throttle) and then push the trigger away from it
(full braking).
When you push the trigger away from the handle, the brake rod actuates
the brake lever. The carburettor slide, however, should only close as far as
the preset idle opening when the black metal spring on the throttle linkage
is fully compressed.
Compare what you see with the two photos above,
looking first at the carburettor. Even with full braking
applied (see photograph above right), there must be a gap
of at least 0.3mm in the carburettor's air inlet. If the gap in
your model is narrower, you should adjust the idling stop
screw to increase it (see photograph below). If the gap is
correct, you can move on to the fine adjustment of the
throttle linkage.
The adjustment for the idling stop is on the side of the carburettor body.
When you turn it clockwise, the inlet gap increases (see red arrows). To start
with, choose a large idle gap, rather than one that is too narrow (minimum
0.3mm, maximum 1mm).
min 0.3mm
435
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