Futaba 8J User Manual
Page 37
36
End Point of servo travel adjustment (END POINT): the most flexible version of travel adjustment available. It
LQGHSHQGHQWO\ DGMXVWV HDFK HQG RI HDFK LQGLYLGXDO VHUYR¶V WUDYHO UDWKHU WKDQ RQH VHWWLQJ IRU WKH VHUYR WKDW DIIHFWV ERWK
directions. Again, for CCPM helicopters, be sure to see SWASH AFR (see p. 75) prior to adjusting end points.
Adjustability:
&DQ VHW HDFK GLUHFWLRQ LQGHSHQGHQWO\
5DQJHV IURP
QR VHUYR PRYHPHQW DW DOO WR $W D
VHWWLQJ WKH
WKURZ RI WKH VHUYR LV DSSUR[LPDWHO\ IRU FKDQQHOV DQG DSSUR[LPDWHO\
IRU FKDQQHOV
5HGXFLQJ WKH SHUFHQWDJH VHWWLQJV UHGXFHV WKH WRWDO VHUYR WKURZ LQ WKDW GLUHFWLRQ
([DPSOHV
$GMXVW WKH WKURWWOH KLJK HQG WR DYRLG ELQGLQJ DW WKH FDUEXUHWRU DQG ORZ HQG WR DOORZ IRU SURSHU FDUEXUHWRU FORVXUH
$GMXVW ÀDS VR XS WUDYHO LV RQO\ VXI¿FLHQW IRU VWUDLJKW DQG OHYHO ÀLJKW WULPPLQJ ZLWK IXOO GRZQ WUDYHO
END POINT PD\ EH DGMXVWHG WR WR NHHS D VHUYR IURP PRYLQJ RQH GLUHFWLRQ VXFK DV ÀDSV QRW LQWHQGHG WR DOVR RSHUDWH DV
spoilers.
5HWUDFW VHUYRV DUH QRW SURSRUWLRQDO &KDQJLQJ END POINT will not adjust the servo.
END POINT
adjusts only the individual servo. It will have no effect on any other servo that is operated in conjunction with
this servo via mix or preset programming such as FLAPERON, AILEVATOR, etc. This is so that each individual servo can be
FDUHIXOO\ ¿QHWXQHG WR DYRLG ELQGLQJ DQG RWKHU FRQÀLFWV 7R DGMXVW WKH WRWDO WUDYHO RI D IXQFWLRQ VXFK DV FLAPERON PDNH
WKH DGMXVWPHQWV LQ WKDW IXQFWLRQV FRQWUROV )RU &&30 KHOLFRSWHUV DGMXVW WKH WRWDO WUDYHO RI WKH IXQFWLRQ VXFK DV FROOHFWLYH
pitch, in SWASH AFR.
$GMXVW WKH OLQNDJH RU WKH END POINT" ,W LV QHDUO\ DOZD\V EHVW WR DGMXVW \RXU OLQNDJHV WR JHW DV FORVH DV SRVVLEOH SULRU WR
utilizing END POINT. The higher the END POINT setting, the better position accuracy and the more servo power available
DW QHDUO\ DQ\ SRVLWLRQ H[FHSW LI XVLQJ GLJLWDO VHUYRV +LJKHU END POINT values also mean longer travel time to reach the
GHVLUHG SRVLWLRQ DV \RX DUH XWLOL]LQJ PRUH RI WKH VHUYRV WRWDO WUDYHO )RU H[DPSOH XVLQJ
END POINT
would give you
RQO\ KDOI WKH VWHSV RI VHUYR WUDYHO PHDQLQJ HYHU\ FOLFN RI WULP KDV WZLFH WKH HIIHFW DQG WKH VHUYR JHWV WKHUH LQ KDOI WKH
time).
HQG SRLQW DQG PRYLQJ WKH OLQNDJH WRUTXH DFFXUDF\ EXW WUDQVLW WLPH WR JHW WKHUH
HQG SRLQW LQVWHDG RI DGMXVWLQJ OLQNDJHV WUDYHO WLPH EXW WRUTXH DFFXUDF\
GOAL of EXAMPLE:
STEPS:
INPUTS:
Decrease the flap servo throw in the
X S Z D U G G L U H F W L R Q W R
W R D O O R Z
WULPPLQJ RI OHYHO ÀLJKW RQO\ DQG GRZQ
WUDYHO WR
WR SUHYHQW ELQGLQJ
Open END POINT function.
for 1 second.
to END POINT.
&KRRVH SURSHU FKDQQHO DQG PRYH VWLFN
RU NQRE LQ GLUHFWLRQ \RX ZDQW WR DGMXVW
DQG VHW VHUYR WKURZ ([ IODS XS
ÀDS GRZQ
to FLP.
ÀDS FRQWURO >GHIDXOW LV VR].
to 5%.*
VR.
to 85%.*
Close.
Where next?
Go to SERVO GLVSOD\ WR FRQ¿UP WKH GHVLUHG HQG UHVXOW VHH S
Set up IDLE-DOWN and THR-CUT to slow/cut the engine: see p. 37.
Set up dual/triple rates and exponential(D/R,EXP): see p. 39.
6HW XS ÀLJKW WLPHUV VHH S
Set up trainer functions: see p. 44.
Set up twin aileron servos: see p. 52.
Set up twin elevator servos: see p. 54.