Water-Cooled VW Performance Handbook

Shiftpoint Optimizer — BASIC program listing

This code runs for me using PC-BASIC. Copying the following program listing and pasting into your BASIC editor should eliminate any typing errors.

100 REM SHIFTPOINT OPTIMIZER PROGRAM
105 REM Jack Broomall Racing
110 CLS
114 DIM G(30)
115 DIM R(30)
120 DIM T(30)
121 DIM A
125 PRINT "Shift Point Optimizer Program"
130 FOR A=1 TO 1000
135 NEXT A
140 CLS
145 GOTO 195
150 CLS
155 PRINT "Note: It will be necessary to re-enter all data points."
159 DIM W
160 FOR W=1 TO 30
165 R(W)=0
170 T(W)=0
175 NEXT W
180 PRINT
185 PRINT
190 GOTO 200
195 CLS
200 PRINT "Input Torque vs. RPM Information from Dyno Testing"
205 PRINT "++++++++++++++++++++++++++++++++++++++++++++++++++"
209 DIM N
210 N=1
215 PRINT "Data Point"; N
220 PRINT
225 INPUT "Engine Speed (RPM): ";R(N)
230 PRINT
235 INPUT "Engine Torque (lb/ft): ";T(N)
240 PRINT
245 CLS
250 PRINT "If you wish to enter another data point enter 1"
255 PRINT
260 PRINT "If you wish to run the program enter 2"
264 DIM I
265 INPUT "1 or 2";I
270 IF I>1 THEN 295
275 N=N+1
280 CLS
285 GOTO 215
290 CLS
295 CLS
300 PRINT "Please check that torque/RPM data points are correct"
305 PRINT
310 PRINT
315 PRINT "Data points entered this run:"
320 PRINT
325 PRINT "Data", "RPM", "Torque"
330 PRINT "Point",,"(lb/ft)"
335 PRINT "-------------------------"
339 DIM J
340 FOR J=1 TO N
345 PRINT J,R(J),T(J)
350 NEXT J
355 FOR A=1 TO 1000
360 NEXT A
365 PRINT
370 PRINT
375 PRINT "If data are correct as displayed, enter 1 to continue"
380 PRINT "If data are incorrect enter 2 to make corrections"
385 INPUT "1 or 2";I
390 IF I>1 THEN 150
395 CLS
400 GOTO 420
405 CLS
410 PRINT "Note: It will be necessary to re-enter all gearing & tire info."
415 PRINT
420 PRINT "Input Transmission Ratio Information"
425 PRINT "------------------------------------"
430 PRINT
435 PRINT "Please enter information as requested."
440 PRINT
445 INPUT "Number of forward gears: ";G
450 FOR T=1 TO G
455 IF T=1 THEN 475
460 IF T=2 THEN 495
465 IF T=3 THEN 515
470 IF T>3 THEN 535
475 PRINT
480 PRINT "First gear ratio: "
485 INPUT G(1)
490 GOTO 550
495 PRINT
500 PRINT "Second gear ratio: "
505 INPUT G(2)
510 GOTO 550
515 PRINT
520 PRINT "Third gear ratio: "
525 INPUT G(3)
530 GOTO 550
535 PRINT
540 PRINT T; "th gear ratio: "
545 INPUT G(T)
550 NEXT T
555 CLS
560 PRINT "Input differential ratio"
565 PRINT "------------------------"
570 PRINT
575 PRINT "Differential ratio: "
579 DIM D
580 INPUT D
585 CLS
590 PRINT "Input tire diameter"
595 PRINT "-------------------"
600 PRINT
605 PRINT "Tire diameter (inches): "
610 INPUT T1
615 CLS
620 PRINT "Please check that the following input data are entered correctly."
625 FOR A=1 TO 1000
630 NEXT A
635 PRINT
640 PRINT
644 DIM B
645 FOR B=1 TO G
650 PRINT "Gear " ;B; " is " ;G(B); ":1"
655 PRINT
660 NEXT B
665 PRINT "Differential ratio is ";D;":1"
670 PRINT
675 PRINT "Tire diameter is ";T1; " inches"
680 PRINT
685 FOR A=1 TO 1000
690 NEXT A
695 PRINT "If data are correct as displayed, enter 1 to continue"
700 PRINT "If data are incorrect, enter 2 to make corrections."
705 INPUT "1 or 2";I
710 IF I>1 THEN 405
715 CLS
720 PRINT "For maximum torque at front wheels, make upshifts as follows:"
725 PRINT "-------------------------------------------------------------"
729 PRINT
730 DIM U
731 DIM U2
732 DIM K
733 DIM C
734 DIM F
735 FOR F=1 TO (G-1)
740 G1=G(F)
745 G2=G(F+1)
750 FOR U=R(1) TO R(N) STEP 20
755 FOR C=1 TO (N-1)
760 IF U>=R(C) AND U<R(C+1) THEN 770
765 NEXT C
770 T2=T(C) +(T(C+1)-T(C))*((U-R(C))/(R(C+1)-R(C)))
775 T3=T2*G1*D
780 U2=U*(G(F+1)/G(F))
785 IF U2<R(1) THEN 840
790 FOR K=1 TO (N-1)
795 IF U2>=R(K) AND U2<R(K+1) THEN 805
800 NEXT K
805 T5=T(K)+(T(K+1))*((U2-R(K))/(R(K+1)-R(K)))
810 T4=T5*G2*D
815 IF T3<T4 THEN 825
820 GOTO 850
825 PRINT "Make ";F; "-" ;(F+1); " shift at ";U; " rpm."
830 PRINT
835 GOTO 860
840 NEXT U
845 U=U-20
850 IF U=R(N) THEN 825
855 GOTO 840
860 NEXT F
865 PRINT
870 PRINT "END OF OUTPUT"
875 END