Principal Specifications - Yamaha JW-II Service Manual

Introduction
•
Guidelines for selecting type A or B or C
1. A type is suitable for those who are capable of grasping the hand rims (such as paraplegics) and
have enough strength to travel easily up a slope of about 4° (inclination of a slope inside a build-
ing). Users with this much strength may not like the way uphill travel feels with the type B model,
because the hand rims feel loosely mounted.
2. B type is suitable for those who are incapable of grasping the hand rims (such as quadriplegics)
and have difficulty traveling up a slope of about 4° manually by themselves. Slopes will become
easier if climbed slowly. If these users use the A type, they will not be able to use the power assist
function effectively, since they are incapable of pushing the hand rims sufficiently.
✽ If the user tests the type B model and feels that there is a sense of scraping bottom when the
hand rims are turned slightly forcefully, the type A model is more suitable. The type A model
should be test-ridden before the final specifications are decided.
3. The C type is designed for persons who are able to operate one hand rim with one hand and to
steer with one foot (such as hemiplegia). (Steering cannot be done by the hand rim alone.)

Principal Specifications

Model Type
Unit Weight
Tire Size (2 types):
Power Assist Unit:
Travel Distance After Single Charge
Range of Assisted Speeds
Control
Drive
Steering
Braking
Battery: Model Type
Nominal Voltage
Nominal Capacity
Weight
Charger: Model Type
Input Voltage
Input Frequency
Charging Current
Cooling Method
Range of Temperature at Start of Charging
Charging Time
Overcurrent Interception
Coloring: Cap, Wheel and Hub Case, Transmission
nominal diameter of 22 inches
nominal diameter of 24 inches
Model Type
Rated Voltage
Rated Output
Principal Specifications
XA41 (catalogue indication: A type)
XA42 (catalogue indication: B type)
XA43 (catalogue indication: C type)
A and B types 15.8 Kg
C type 17.2 Kg
22×1 3/8WO (tire outer diameter: 570 ± 3 mm)
24×1 3/8WO (tire outer diameter: 608 ± 3 mm)
Direct current brush type motor
24 V
90 W×2 (Left wheel × 1, right wheel × 1)
A and B types Approx. 15 km
C type Approx. 10 km
(For continuous travel on a level surface at 5 km/h,
the C type is 3.5 km/h.)
A and B types 0 to 6 km/h
C type 0 to 4 km/h
Microcomputer control
Belt + gear type (rear wheel direct drive)
Right and left hand rim steering. (C: Foot)
Brake assist + manual wheelchair brake
Nickel-Hydrogen battery (fast-charging type)
Two 1.2 V × 20-cell batteries connected in series, 24 V
6.7 Ah (5-hour ratio)
2.9 Kg
JWC-2
AC 100 ~ 240 V, multi-input
50/60 Hz
Fast 2.6 A trickle 100 mA
Forced air-cool
0 to 40°C (battery temperature)
2.5 to 3.0 h
30A blade-type micro-fuse
Competition silver
Circuit silver
2
Model Variation/