Gradeability/speed/rimpull, Retarding performance – CAT Articulated Truck 725 User Manual
Page 15
15
725 Articulated Truck specifications
10
SPEED
GROSS WEIGHT
TOTAL RESISTANCE %
0
5
15
20
25
30
35
60
50
40
30
20
10
0
0
10
20
30
40
50
60
30
25
20
40%
35%
30%
25%
20%
15%
10%
5%
0
km/h
mph
15
10
5
0
lb x 1000
kg x 1000
lb x 1000
kg x 1000
20
40
60
80
100
120
0
5
10
15
20
25
30
35
40
45
50
55
Gradeability/Speed/Rimpull
To determine performance, read from
Gross Weight down to % Total Resistance.
Total Resistance equals actual % grade plus
1% for each 10 kg/metric ton (20 lb/ton) of
Rolling Resistance. From this point, read
horizontally to the curve with the highest
attainable speed range. Then, go down to
Maximum Speed. Usable Rimpull depends
on traction available.
GROSS WEIGHT
STANDARD*
RIMPULL
(GRADE PLUS ROLLING RESISTANCE)
1A — 1st Gear
(Converter Drive)
1B — 1st Gear
(Direct Drive)
2 — 2nd Gear
E — Empty 22 260 kg (49,075 lb)
L — Loaded 45 850 kg (101,082 lb)
* at sea level
3 — 3rd Gear
4 — 4th Gear
5 — 5th Gear
6 — 6th Gear
1A
1B
2
3
4
5
6
E
L
Retarding Performance
To determine performance, read from
Gross Weight down to % Effective Grade.
Effective Grade equals actual % favorable
grade plus 1% for each 10 kg/metric ton
(20 lb/ton) of Rolling Resistance. From this
point, read horizontally to the curve with
the highest attainable speed range. Then, go
down to Maximum Speed. Retarding effect
on these curves represents full application of
the retarder.
SPEED
% EFFECTIVE GRADE (FAVORABLE)
1 — 1st Gear
2 — 2nd Gear
3 — 3rd Gear
E — Empty 22 260 kg (49,075 lb)
L — Loaded 45 850 kg (101,082 lb)
4 — 4th Gear
5 — 5th Gear
6 — 6th Gear
1
2
3
4
5
6
E
L
5
10
15
20
25
30
35
40
0
10
20
30
40
50
60
km/h
mph
40%
35%
30%
25%
20%
15%
10%
5%
lb x 1000
kg x 1000
20
0
0
120
100
80
60
40
10
20
30
40
50