APRILIA V990 User manual

0-1
V990 engine
INTRODUCTION 0
GENERAL INFORMATION 1
TECHNICAL INFORMATION 2
DISASSEMBLING THE ENGINE 3
WORK ON THE INDIVIDUAL PARTS 4
REASSEMBLING THE ENGINE 5
ANALYTICAL INDEX @
0
Release 01/2001-10 - 00
6 engine -1 U 01/2001-10
WORKSHOP manual
a rilia part# 8140586

INTRODUCTION
0
0-2
V990 engine
INTRODUCTION
4!",%/&#/.4%.43
50$!4%/&2%,%!3% ..... 0-3-00
0.1.1 INFORMATION ON THE
UPDATING OF THE MANUAL ............... 0-3-00
0.1.2 UPDATED MANUAL GENERAL LIST ... 0-3-00
 /74/#/.35,44 %-!.5!, ..... 0-4-00
&/2%7/2$ ............................................... 0-5-00
2%&%2%.#%-!.5!,3 ......................... 0-5-00
0.4.1 VEHICLE WORKSHOP MANUALS ....... 0-5-00
0.4.2 SPARE PARTS CATALOGUES ............ 0-5-00
0.4.3 SPECIAL TOOL MANUALS .................. 0-5-00
0.4.4 USE AND MAINTENANCE
BOOK ..................................................... 0-5-00
3!&%497!2.).'3 ............................... 0-6-00
0.5.1 PRECAUTIONS AND GENERAL
INFORMATIONS .................................... 0-6-00
0.5.2 BEFORE THE DISASSEMBLY OF THE
COMPONENTS ...................................... 0-6-00
0.5.3 DISASSEMBLING THE
COMPONENTS ...................................... 0-6-00
0.5.4 REASSEMBLING THE
COMPONENTS ...................................... 0-6-00
 /74/53%9/527/2+3 /0
-!.5!, ..................................................... 0-7-00
0.6.1 ADVICE FOR CONSULTATION ............ 0-7-00
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).)4)!,3 .................................................... 0-8-00
Release 01/2001-10
- 00

INTRODUCTION
0-3
V990 engine
50$!4%/&2%,%!3%
Date of the first edition Release 00) and of the following
Releases:
First edition Release 00) ................................ june 2001
Release 01 ..................................................october 2001
0.1.1 INFORMATION ON THE UPDATING OF THE
MANUAL
The manual must be u dated every time a new “Re-
lease” is received.
The manual consists of # 7 sections, for a total amount of
# 166 pages, as listed below.
NOTE For the nomenclature of the standard page of
the manual and specifically for the definition of the page
number) see 0.2 HOW TO CONSULT THE MANUAL).
Insert the ages of the last Release in the manual
and eliminate the corres onding obsolete ages
(even if belonging to a revious Release).
aWARNING
The failure to u date the manual and to eliminate
the obsolete ages makes it more difficult to con-
sult the manual and may lead to the erformance
of incorrect o erations on the vehicle, with serious
consequences for the safety of the engine, of the
vehicle and of ersons and ro erty.
0.1.2 UPDATED MANUAL GENERAL LIST
ag.# Release
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ag.# Release
Release 01/2001-10 - 00
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ag.# Release
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Å - 1 - 00 ............................ 00
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ag.# Release

INTRODUCTION
0-4
V990 engine
 /74/#/.35,44 %-!.5!,
1) Vehicle or engine) model
2) Section
3) Release consecutive number “00” indicates the first
edition)
4) Year and month of publication of the Release
5) Section number
6) Section page consecutive number
7) Updated page consecutive number
8) Chapter title numbered consecutively)
9) Paragraph title numbered consecutively)
10) Description of the operation always preceded by a
rhombus)
Release 00/2001-06
- 00

INTRODUCTION
0-5
V990 engine
 &/2%7/2$
– This manual supplies the main information for normal
servicing procedures.
– In the future, the information and illustrations that make
up this manual will be updated by means of “Releases”,
see 0.1 UPDATE OF RELEASE 01/2001-10).
– This publication is intended for the a rilia Dealers and
their qualified engineers; many notions were voluntarily
omitted, because they were considered superfluous.
Since it is not possible to include complete mechanical
information in this publication, the persons using this
manual must have a basic mechanical training and a
basic knowledge of the procedures regarding engines
repair systems.
Without this knowledge, the repair or servicing of the
engine may be ineffective or even dangerous.
The manual does not describe all the procedures for
the repair and servicing of the engine in detail, there-
fore it is important to be particularly careful, in order to
avoid any damage to components and persons.
In order to grant its customers more and more satisfac-
tion, a rilia s. .a. will keep improving its products and
the relevant documentation.
The main technical modifications and the modifica-
tions in the engine repair procedures are communicat-
ed to all a rilia Outlets and Branches the world over.
These modifications will be described in the succes-
sive editions of this manual.
In case of need or in case there are any doubts regard-
ing the repair and servicing procedures, contact the
a rilia s. .a. Divisione Ricambi, which will give you
any information required and will also inform you about
any updating and technical modifications of the vehi-
cle.
a rilia s. .a. reserves the right to modify its models at any
time, without prejudice to the main characteristics here
described.
All rights as to electronic storage, reproduction and total
or partial adaptation, with any means, are reserved for all
Countries.
The mention to products or services supplied by third par-
ties is made only for information purposes and it isn’t bind-
ing in any case.
a rilia takes no responsibility as to the performance or
use of said products.
For further information, see 0.4 REFERENCE MANU-
ALS).
First edition: april: june 2001
Produced and printed by:
editing division
Soave VERONA) - Italy
tel. [phone]
fax [phone]
E-mail: [e-mail]
www.stp.it
On behalf of:
a rilia s. .a. Divisione Ricambi
via Noalese, 156 - 30036 Santa Maria di Sala VE) - Italia
tel. [phone]
fax [phone]
www.aprilia.com
www.serviceaprilia.com
 2%&%2%.#%-!.5!,3
0.4.1 VEHICLE WORKSHOP MANUALS
Consult the workshop manual of the vehicle.
Consult the specific tables to find the manual code and
the country to which the vehicle and, consequently, the
engine are destined.
0.4.2 SPARE PARTS CATALOGUES
Consult the workshop manual of the vehicle.
Consult the specific tables to find the manual code and
the country to which the vehicle and, consequently, the
engine are destined.
0.4.3 SPECIAL TOOL MANUALS
0.4.4 USE AND MAINTENANCE BOOK
Consult the workshop manual of the vehicle.
Consult the specific tables to find the manual code and
the country to which the vehicle and, consequently, the
engine are destined.
APRILIA art# (countries)
8202278 IfdEU
Release 00/2001-06 - 00

INTRODUCTION
0-6
V990 engine
 3!&%497!2.).'3
The following precautionary warnings are used through-
out this manual in order to convey the following messag-
es:
Safety warning. When you find this symbol on
the engine or in the manual, be careful to the o-
tential risk of ersonal injury. Non-com liance with
the indications given in the messages receded by
this symbol may result in grave risks for your and oth-
er eo le’s safety and for the engine!
aWARNING
Indicates a otential hazard which may result in seri-
ous injury or even death.
aCAUTION
Indicates a otential hazard which may result in
minor ersonal injury or damage to the engine.
NOTE The word “NOTE” in this manual precedes im-
portant information or instructions.
0.5.1 PRECAUTIONS AND GENERAL INFORMA-
TIONS
Follow with care these recommendations when repairing,
disassembling and reassembling the engine.
aWARNING
The use of naked flames is forbidden for any ty e of
o eration.
Kee away from the red-hot arts of the engine, in or-
der to avoid burns.
aWARNING
Do not hold any mechanical iece or other arts of
the engine with your mouth: the com onents are not
edible and some of them are noxious or even toxic.
If not ex ressly indicated otherwise, for the reassem-
bly of the units re eat the disassembly o erations in
reverse order.
Any reference to o erations from other cha ters
must be inter reted logically in order to avoid com-
onents being removed unnecessarily.
When two or more ersons are working together,
make sure that each is working in safe conditions.
Carefully read 1.2 (INSTRUCTIONS FOR USE OF FU-
EL, LUBRICANTS, COOLANT AND OTHER COMPO-
NENTS).
0.5.2 BEFORE THE DISASSEMBLY OF THE
COMPONENTS
– Remove any dirt, mud, dust and foreign matters from
the engine before disassembling the components.
– Use, when necessary, the special tools designed for
this engine.
0.5.3 DISASSEMBLING THE COMPONENTS
– Do not loosen and/or tighten the screws and nuts using
pliers or other tools: instead, always use the proper
spanner.
– Before disconnecting the joints pipes, cables, etc.),
mark the positions on all of them and mark them with
different distinguishing signs.
Each piece must be marked clearly, in order not to
have problems during installation.
– Clean and wash carefully any disassembled parts with
low inflammability detergents.
– Keep the parts that are used in pairs together, since
they have adapted to each other following the normal
wear.
Some components must be used together or replaced
completely.
– Keep away from heat sources.
0.5.4 REASSEMBLING THE COMPONENTS
aCAUTION
Never use a seeger ring twice. When a seeger ring is
removed, it must be re laced with a new one. When
assembling a new seeger ring be careful not to
stretch its ends more than strictly necessary to ut it
on the shaft.
After installing a seeger ring, make sure that it is
com letely and firmly inserted in its seat.
Do not use com ressed air to clean the bearings.
NOTE The bearings must rotate freely, without halting
a/o noise otherwise they must be replaced.
– Use only original a rilia SPARE PARTS.
– Use the recommended lubricants.
– Whenever possible, lubricate the parts before reas-
sembly.
– When tightening screws and nuts, begin with those
having greater diameters or with inner ones, proceed-
ing diagonally.
Tighten screws or nuts in successive passages before
applying driving torque.
– Always replace lock nuts, seals, sealing rings, snap
rings, O-rings, split pins and screws, whenever the
thread appears damaged, with new ones.
– Before the assembly, clean all the connection surfaces,
the oil seal edges and the gaskets.
Apply a thin layer of lithium-based grease on the oil
seal edges.
Put back the oil seals and the bearings with the mark or
serial number facing towards the outside visible side).
– When installing the bearings, lubricate them abundant-
ly.
– Make sure that each component has been reassem-
bled correctly.
a
Release 00/2001-06
- 00

INTRODUCTION
0-7
V990 engine
 /74/53%9/527/2+3 /0-!.5!,
0.6.1 ADVICE FOR CONSULTATION
– This manual is divided into section and chapters, each
one of which corresponds to a category of main com-
ponents.
To consult them, see the sections’ index, see page 0-1.
– If not expressly indicated otherwise, for the reassembly
of the units repeat the disassembly operations in re-
verse order.
– For normal maintenance operations, consult the “USE
AND MAINTENANCE” manual.
The o erations receded by this symbol must
be re eated on the o osite side of the engine.
In this manual the various versions are indicated by the
following symbols:
WRSV mille
wRSV mille R
ñSL mille
åRST mille Futura
üETV mille Ca onord
mo tional
VERSION:
IItaly GGreece MMalaysia
UUnited King-
dom
OHolland cChile
aAustria YSwitzerland HCroatia
pPortugal DDenmark AAustralia
FFinland JJa an uUnited States
of America
BBelgium SSinga ore ÄBrazil
dGermany sSlovenia RSouth Africa
fFrance iIsrael New Zealand
ES ain ¬South Korea CCanada
★
Release 01/2001-10 - 00

INTRODUCTION
0-8
V990 engine
!""2%6)!4)/.339-"/,3).)4)!,3
#= number
<= is less than
>= is greater than
≤= is equal to or less than
≥= is equal to or greater than
~= approximately
∞= infinity
°C = degrees Celsius centigrade)
°F = degrees Fahrenheit
±= plus or minus
a.c. = alternating current
A= ampère
Ah = ampere per hour
API = American Petroleum Institute
HV = high voltage
AV/DC = AntiVibration Double Countershaft
bar = unit of pressure 1 bar = 100 kPa)
d.c. = direct current
cm#= cubic centimetres
CO = carbon monoxide
CPU = Central Processing Unit
DIN = German industrial normative Deutsche
Industrie Norm)
DOHC = Double Overhead Camshaft
ECU = Engine Control Unit
r m = revolutions per minute
HC = unburnt hydrocarbons
ISC = idle speed control
ISO = International Standardization Organization
kg = kilograms
kgm = kilograms per metre 1 kgm = 10 Nm)
km = kilometres
km/h = kilometres an hour
kΩ= kilo-ohms
kPa = kiloPascal 1 kPa = 0.01 bar)
KS = clutch side Kupplungseite)
kW = kilowatt
L= litres
LAP = lap race course)
LED = Light Emitting Diode
LEFT
SIDE = left side
m/s = metres an second
MAX = maximum
mbar = millibar 1mbar = 0.1 kPa)
mi = mile
MIN = minimum
MPH = miles per hour
MS = flywheel side Magnetoseite)
MΩ= megaohm
N.A. = not Available Not Available)
N.O.M.M. = “Motor” method octane number
N.O.R.M. = “Research” method octane number
Nm = newton per meter 1 Nm = 0.1 kgm)
Ω= ohm
PICK-UP = pick-up
BDC = bottom dead centre
TDC = top dead centre
PPC = Pneumatic Power Clutch
RIGHT
SIDE = right side
SAE = Society of Automotive Engineers
TEST = diagnostics test
T.B.E.I. = convex socket head
T.C.E.I. = hexagonal socket head
T.E. = hex-head
T.P. = flat head
TSI = Twin Spark Ignition
UPSIDE-
DOWN = upside-down rods
V= volt
W= watt
Ø= diameter
Release 00/2001-06
- 00

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INTRODUCTION
0-9
V990 engine
Release 00/2001-06 - 00

NOTE
THIS PAGE HAS BEEN INTENTIONALLY LEFT EMPTY
INTRODUCTION
0-10
V990 engine
Release 00/2001-06
- 00

V990 engine
1-1
GENERAL INFORMATION 1
Release 00/2001-06 - 00

GENERAL INFORMATION
1
1-2
V990 engine
GENERAL INFORMATION
4!",%/&#/.4%.43
0/3)4)/./&4 %3%2)!,
.5-"%23 .................................................. 1-3-00
1.1.1 ENGINE NUMBER ................................... 1-3-00
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&5%,,5"2)#!.43#//,!.4
!.$/4 %2#/-0/.%.43 ................. 1-3-00
1.2.1 FUEL ........................................................ 1-3-00
1.2.2 ENGINE OIL ............................................ 1-3-00
1.2.3 COOLANT ............................................... 1-4-00
1.2.4 CARBON MONOXIDE ............................. 1-4-00
1.2.5 HOT COMPONENTS ............................... 1-4-00
30!2%0!243 .......................................... 1-4-00
- 00 Release 00/2001-06

GENERAL INFORMATION
1-3
V990 engine
 0/3)4)/./&4 %3%2)!,.5-"%23
These numbers are necessary for the registration of the
vehicle.
Do not alter the identification numbers if you do not want
to incur severe penal and administrative sanctions.
1.1.1 ENGINE NUMBER
The engine number is stamped on the rear part of the en-
gine, near the pinion.
 ).3425#4)/.3&/253%/&&5%,
,5"2)#!.43#//,!.4!.$/4 %2
#/-0/.%.43
1.2.1 FUEL
aWARNING
The fuel used for internal combustion engines is ex-
tremely inflammable and in articular conditions it
can become ex losive.
Avoid any contact of the fuel with the skin and the in-
halation of va ours; do not swallow fuel or our it
from a rece tacle into another by means of a tube.
DO NOT DISPOSE OF FUEL IN THE ENVIRONMENT.
KEEP AWAY FROM CHILDREN.
Use only premium grade unleaded petrol, min. O.N. 95
N.O.R.M.) and 85 N.O.M.M.).
1.2.2 ENGINE OIL
aWARNING
Engine oil may cause serious damage to the skin if
handled daily and for long eriods.
Wash your hands carefully after use.
Do not dis ose of the oil in the environment.
Deliver it to or have it collected by the nearest oil sal-
vage center or by the su lier.
In case any maintenance o eration has to be carried
out, it is advisable to use latex gloves.
For the maintenance intervals, see 0.4.1 (VEHICLE
WORKSHOP MANUALS).
For the lubricant ty es, see 2.2 (LUBRICANT CHART).
Release 00/2001-06 - 00

GENERAL INFORMATION
1-4
V990 engine
1.2.3 COOLANT
aWARNING
The coolant is noxious: do not swallow it; if the cool-
ant gets in contact with the skin or the eyes, it can
cause serious irritations. If the coolant gets in con-
tact with your skin or eyes, rinse with lenty of water
and consult a doctor.
If it is swallowed, induce vomit, rinse mouth and
throat with lenty of water and consult a doctor with-
out delay.
DO NOT DISPOSE OF THE FLUID IN THE ENVIRON-
MENT.
KEEP AWAY FROM CHILDREN.
Be careful not to s ill the coolant on the red-hot arts
of the engine: it may catch fire and send out invisible
flames.
In case any maintenance o eration should be re-
quired, it is advisable to use latex gloves.
Do not use the vehicle if the coolant is below the min-
imum rescribed level.
For the maintenance intervals, see 0.4.1 (VEHICLE
WORKSHOP MANUALS).
For the lubricant ty es, see 2.2 (LUBRICANT CHART).
NOTE The characteristics of the various antifreeze liq-
uids are different. Be sure to read the label on the product
to learn the degree of protection it guarantees.
aCAUTION
Use only antifreeze and anticorrosive without nitrite
in order to ensure rotection at at least -35 °C.
1.2.4 CARBON MONOXIDE
If it is necessary to let the engine run in order to carry out
some work, make sure that the area in which you are op-
erating is properly ventilated.
Never run the engine in enclosed spaces.
If it is necessary to work indoors, use an exhaust evacua-
tion system.
aWARNING
The exhaust fumes contain carbon monoxide, a oi-
sonous gas that can cause loss of consciousness
and even death.
1.2.5 HOT COMPONENTS
aWARNING
The engine and the com onents of the exhaust sys-
tem become very hot and remain hot for some time
after the engine has been sto ed.
Before handling these com onents, wear insulating
gloves or wait until the engine and the exhaust sys-
tem have cooled down.
 30!2%0!243
For any replacement, use a rilia Genuine Spare Parts
only, see 0.4.2 SPARE PARTS CATALOGUES).
a rilia Genuine Spare Parts are high-quality parts, ex-
pressly designed and manufactured for a rilia vehicles.
aCAUTION
Failure to use APRILIA Genuine S are Parts may re-
sult in incorrect erformance and damages.
- 00 Release 00/2001-06

GENERAL INFORMATION
NOTE
1-5
THIS PAGE HAS BEEN INTENTIONALLY LEFT EMPTY
V990 engine
Release 00/2001-06 - 00

GENERAL INFORMATION
NOTE
1-6
THIS PAGE HAS BEEN INTENTIONALLY LEFT EMPTY
V990 engine
- 00 Release 00/2001-06

2-1
V990 engine
1
TECHNICAL INFORMATION 2
Release 00/2001-06 - 00

TECHNICAL INFORMATION
2
2-2
V990 engine
SERVICE AND SETTING UP
4!",%/&#/.4%.43
4%# .)#!,30%#)&)#!4)/.3 ............ 2-3-00
,5"2)#!.4# !24 ................................ 2-5-00
30%#)!,4//,3m ................................ 2-6-00
2.3.1 ENGINE TOOLS ..................................... 2-6-00
2.3.2 MISCELLANEOUS TOOLS ................... 2-8-00
2.3.3 TOOLS USED FOR OTHER a rilia
VEHICLES ............................................ 2-10-00
#/.35-!",%3 ..................................... 2-11-00
2.4.1 PRODUCT PROPERTIES .................... 2-11-00
2.4.2 USE OF CONSUMABLES ................... 2-12-00
&!34%.).'%,%-%.43 ...................... 2-14-00
2.5.1 JOINTS WITH CLICK CLAMPS
AND SCREW CLAMPS ........................ 2-14-00
2.5.2 GENERAL SPECIFICATIONS OF
THE DRIVING TORQUES .................... 2-15-00
2.5.3 DRIVING TORQUE ............................... 2-16-00
- 00 Release 00/2001-06

TECHNICAL INFORMATION
2-3
V990 engine
 4%# .)#!,30%#)&)#!4)/.3
ENGINE
Model V990
Type 60° longitudinal V-type, two-cylinder, 4-stroke, with 4
valves per cylinder, DOHC.
Number of cylinders 2
Total displacement W w ’98 – ’99 – 2000 models) ñ997.6 cm#
Total displacement W w models starting from 2001) ü998 cm#
Total displacement å997.62 cm#
Max. rated power to driving shaft) 86.5 kW 118 HP) at 9250 rpm
Max. rated power to driving shaft) W w f70 kW 94 HP) at 9250 rpm
Max. rated power to driving shaft) ñ f77 kW 104 HP) at 9250 rpm
Max. torque 96.5 Nm 9.65 kgm) at 7250 rpm
Max. torque W w f82 Nm 8.2 kgm) at 7000 rpm
Max. torque ñ f90 Nm 9.0 kgm) at 7000 rpm
Bore/stroke 97 mm/67.5 mm
Compression ratio W w ñ11.4 ± 0.5 : 1
Compression ratio å11.8 ± 0.5 : 1
Compression ratio ü10.4 ± 0.5 : 1
Average piston speed 22.5 m/s at 10000 rpm
Camshaft during intake stroke W w ’98 – ’99 – 2000 mod-
els) ñ262°, valve lifting= 10.60 mm
Camshaft during intake stroke W w models starting from
2001)
262°, valve lifting= 11.40 mm
Camshaft during intake stroke å259°, valve lifting= 10.60 mm
Camshaft during intake stroke ü242°, valve lifting= 9.50 mm
Camshaft during exhaust stroke W w ñå 259°, valve lifting= 10.60 mm
Camshaft during exhaust stroke ü242°, valve lifting= 9.50 mm
Valve advance with valve clearance 1mm) W w ñopening during intake stroke = 20° before TDC
closing during intake stroke = 62° after BDC
opening during exhaust stroke = 64° before TDC
closing during exhaust stroke = 15° after BDC
Valve advance with valve clearance 1 mm) W w ñ
models starting from 2001)
opening during intake stroke = 25° before TDC
closing during intake stroke = 59° after BDC
opening during exhaust stroke = 65° before TDC
closing during exhaust stroke = 15° after BDC
Valve advance with valve clearance 1mm) åopening during intake stroke = 20° before TDC
closing during intake stroke = 59° after BDC
opening during exhaust stroke = 64° before TDC
closing during exhaust stroke = 15° after BDC
Valve advance with valve clearance 1mm) üopening during intake stroke = 25° before TDC
closing during intake stroke = 37° after BDC
opening during exhaust stroke = 57° before TDC
closing during exhaust stroke = 5° after BDC
Valve clearance during intake stroke 0.12 – 0.17 mm
Valve clearance during exhaust stroke 0.23 – 0.28 mm
Diameter of the inlet valve plate 36.0 mm
Diameter of the exhaust valve plate 31.0 mm
# Engine revolutions at minimum rpm W w ñ å1250 ± 100 rpm
# Engine revolutions at minimum rpm ü1200 ± 100 rpm
# Engine revolutions at peak rpm W w ñ10250 ± 100 rpm
# Engine revolutions at peak rpm å10500 ± 100 rpm
# Engine revolutions at peak rpm ü9000 ± 100 rpm
Ignition electronically controlled
Starting electric
Follow
ã
Release 01/2001-10 - 00

TECHNICAL INFORMATION
2-4
V990 engine
Follow
ã
ENGINE
Spark advance At start: 5° before TDC, additional advance depending
on specific consumption levels
Starter motor gear ratio i= 49/9 * 30/11 * 64/30 = 31.677
Clutch multidisc in oil bath, with hydraulic control on the left
side of the handlebar and PPC device
- # 9 friction discs; thick 3.5 mm
- # 10 steel discs; thick 1.5 mm
Transmission Mechanical, 6 gears with foot control on the left side of
the engine
Lubrication system dry pan with separate oil tank, # 2 trochoidal pumps
and cooling radiator
Lubrication pressure min 500 kPa 5 bar)
at max 80 °C 176 °F) and 6000 rpm
Air cleaner with dry filter cartridge
Cooling liquid-cooled
Coolant pump gear ratio iwp= 28/27 * 28/28 = 1.037
Coolant pump delivery with thermal expansion valve open) 90 L /min and 9000 rpm
Thermal expansion valve opening start temperature 65 ± 2 °C 149 ± 5 °F)
Engine dry weight ~ 65 – 67 kg
DRIVE W w
GEAR RATIOS Ratio Primary Secondary Final ratio Total ratio
1a31/60 = 1: 1.935 14/35 = 1: 2.50 17/42 = 1: 2.470 11.948
2a16/28 = 1: 1.750 8.368
3a19/26 = 1: 1.368 6.543
4a22/24 = 1: 1.090 5.216
5a23/22 = 1: 0.956 4.573
6a27/23 = 1: 0.851 4.073
# sprocket teeth 17
DRIVE ñ
GEAR RATIOS Ratio Primary Secondary Final ratio Total ratio
1a31/60 = 1: 1.935 14/35 = 1: 2.50 16/41 = 1: 2.563 12.399
2a16/28 = 1: 1.750 8.679
3a19/26 = 1: 1.368 6.787
4a22/24 = 1: 1.090 5.411
5a23/22 = 1: 0.956 4.744
6a27/23 = 1: 0.851 4.225
# sprocket teeth 16
DRIVE å
GEAR RATIOS Ratio Primary Secondary Final ratio Total ratio
1a31/60 = 1: 1.935 14/35 = 1: 2.50 16/43 = 1 : 2.687 13.00
2a16/28 = 1: 1.750 9.102
3a19/26 = 1: 1.368 7.117
4a22/24 = 1: 1.090 5.674
5a23/22 = 1: 0.956 4.975
6a27/23 = 1: 0.851 4.431
# sprocket teeth 16
DRIVE ü
GEAR RATIOS Ratio Primary Secondary Final ratio Total ratio
1a31/60 = 1: 1.935 14/35 = 1: 2.50 17/45 = 1 : 2.647 12.804
2a16/28 = 1: 1.750 9.041
3a19/26 = 1: 1.368 7.006
4a22/24 = 1: 1.090 5.582
5a23/22 = 1: 0.956 4.896
6a27/23 = 1: 0.851 4.358
# sprocket teeth 17
Follow
ã
- 00 Release 01/2001-10