Ignition Systems Part II - Good Karma Productions

Ignition SystemsforRussian Motorcycles(Part II: PM-05 Breaker/Distributor)Ernie Frankeeafranke@tampabay.rr.com(01/2011)

Ignition System of Early Urals and Dneprs1. Spark (Candle) Plug2. Center Contact of Distributor Rotor3. Ignition Coil (KM-01 or IG-4085B)4. High-Voltage Secondary Winding5. Low-Voltage Primary Winding6. Manual Control of Spark Advance/Retard7. Contact Breaker Arm8. Rotary Cam9. Ground Contact with Locking Screw10. Condenser (Capacitor)11. Battery12. Distributor (PM-05)13. Ignition SwitchCapacitor Helps to keepPoints from Pitting6-Volts6-VoltsSpark Gap:0.5-0.6mmBreaker Gap:0.4-0.6mmGround6-Volts6-VoltsNigh-VoltageInterrupted6-VoltPathtoGroundThe basic ignition system is simple. The breaker points arenormally closed, allowing the magnetic field to buildin the ignition coil. When the cam shaft rises, openingthe breaker points, the collapsing magnetic field inducesa high-voltage in the secondary winding of the coil.

PM-05 Breaker (Contact) / Distributor1. Circuit Breaker/Distributor2. Attachment SpringThe PM-05 breaker/distributor was introduced to heavyRussian bike on Ural’s M-72. The distributor cap wasfastened by a special spring. High-voltage travels fromthe middle contact to the spark plugs (candles).

ural-hamburghamburg.deIgnition Distributor PM-05 (6-Volt) for K-750, KM-72 M(Part# 72172)ContactBreaker PointsDistributorCapGasketDistributorCapRotorContactBreaker Points

PM-05 Breaker / Distributor for K-750 Kand M-72MDistributor CapDistributor RotorContactBreaker PointsThe vast majority of SV 750 cm 3 engines have themanuual spark-advance advance PM-05, where the angle isvaried from late (0°-4°) ) to early (28°-3232°) before TDC.

Movable Terminal(Hammer) Connected toIgnition CoilBreakerContacts(Points)Breaker/Distributor PM-05BreakdownInput High-Voltagefrom Ignition CoilOutput to RightSpark PlugFixed Terminal (Anvil)Connected to GroundOutput toLeft Spark PlugDistributorCapacitorDistributor CapHigh-Voltage Paththru Center Contact,then Rotor, and Outthru Side ContactsGasketFelt Feather(oil pad)Distributor RotorPM05 Breaker/Distributor was used on early versions ofDnepr’s K-650, , K-750, KMT-12, MB-750 and M-72. M

PM-05 Distributor Cover (Cap) and Rotoroldtimergarage.euural-hamburg.de(www.ural-hamburg.de)(oldtimergarage.eu)

PM-05 Distributor Cap Springs (Catweazle)Older Type CapNewer Type CapThe clamping spring may be of a different length,depending on the year of the bike.

PM-05Manual Advance/Retard DistributorRotary DiskDistributorCapRotorCapacitor1. Stop2. Screw3. Oil Felt Pad4. Body5. Lever6. Screw7. Locking Screw8. Interrupter Plate Contact9. Eccentric10. Insulated Terminal11. Contact Bracket12. Adjusting Stop13. Rotary Disk14. Spring15. Screw Hole16. Screw17. Plate18. Capacitor (Condenser)19. Capacitor Wire20. Cut-out in Body21. Adjusting Screw Lock-Nut22. Adjusting Screw23./24. Wire Conduits25. Carbon Contact26. Contact Plate27. Cap with Spring28. Rotor29. Cover with Contacts30. Central ContactThe PM05 is controlled by the ignition lever on the left handlebar,ar,while the later PM-302 centrifugal regulator, provided an automaticchange of ignition timing depending on engine speed.

PM-05 Interrupter-Distributor

Why Advance/Retard Ignition Timing?• "Timing Advance" refers to the number of degrees Before Top DeadCenter (BTDC) that the spark will ignite the air-fuel mixture in thecombustion chamber during the compression stroke.• Retarded timing can be defined as changing the timing so that fuelignition happens later than the manufacturer's specified time.• Timing advance is required because it takes time to burn the air-fuelmixture. Igniting the mixture before the piston reaches Top DeadCenter (TDC) will allow the mixture to fully burn soon after the pistonreaches TDC.• As the engine speed increases, the time available to burn the mixturedecreases, but the burning itself proceeds at the same speed. It needsto be started increasingly earlier to complete (advanced) in time.• In a classic ignition system with breaker points, the basic timing canbe set statically using a test light or dynamically using a timing light.Ignition timing is the process of setting the time whena spark will occur during the compression strokerelative to piston position and crankshaft angular velocity.

Use of Handlebar Timing Lever (CossackPowerCossackPower (b-CozzCozz))• On the Open Road: Full Advance• Going Up a Steep Hill: Retard a Bit• Show-Off (slow thumpy idle when stopped): Full or Almost Retard• If Bike Stalls (like a kill switch) when Pulled to Full Retard:– Probably Due to Cable Stretch– Retarding Too Far• Never Ride on Full Retard• When Spark Advance Is Increased (point when the ignition sparkoccurs, BTDC of the compression stroke) we Get More Power, but AlsoMore Heat• There is a point after which we get lots more heat and very little extrapower. (STOP before we get to this point!)• With Engine at Normal Operating Temperature and Idling, AdvanceTiming Slowly (Engine Will Speed Up)• Move Timing Back and Forth, Advancing and Retarding to Get HighestEngine Idling Speed• Back It Off (retard) a Bit– Engine Speed Slows Down Just a Little (Still idling, don't touch the throttle)• Take Short Ride to Make Sure Engine Does Not “Ping" under Load• Check Color of Spark Plugs to Make Sure Not Running Too HotThe manual control of spark advance is controlled by ahandlebar lever connected to a PM-05 breaker/distributor.

Application of PM-05 Breaker/Distributor(Ural (Урал(Урал) later M-52, M-61Mand M-72M, M-72K) MTurnSignalFlasher UnitGenerator(Г-11A)Battery(3MT-6 or 3MT-7)RegulatorManualSpark-AdvanceCableIgnition Coil(B2B)HornFootBrake-LightSwitchHi/Lo BeamSwitchBreaker/Distributor(PM-05)ManualSpark AdvanceHornButton

Application of PM-05 Breaker/Distributor(Dnepr(Днепр) K-750, K-750M Kand MT-12)TurnSignalGenerator(Г-414)Flasher UnitBattery(3MT-6 or 3MT-7)FootBrake-LightSwitchManualSpark-AdvanceCableHi/Lo BeamSwitchIgnition Coil(B2B)HornManual Spark AdvanceHornButtonBreaker/Distributor(PM-05)

Dnepr (Днепр) M-72HornButtonLightHornGenerator(G-11A)Breaker/Distributor(PM-05)ЯШLightsIgnition Coil(KM-01)Regulator(PP-31)BatteryPositive Ground

1. Headlight Cavity2. Hi/Lo-Beam Switch3. Central Switch4. Ignition Switch5. Charge Light6. Safety Fuse7. Sidecar Running Lamps (no turn signals)8. Signal Horn9. Generator (Г-11)10. Battery11. Relay Regulator (RR-1/PP-1)12. Rear Bike Lamp13. Ignition Coil14. Breaker Points15. Distributor16. Spark Plug (candle)17. Horn Button Switch18. Spark Advance Lever19. Hi/Lo-Beam Dimmer LeverM-72 with PP-1 1 RegulatorLeft HandlebarSpark-Advance LeverCable from Spark Advance Leverto PM-05 Breaker/DistributorBreaker/Distributor(PM-05)

Ural (Урал) M-72with Voltage Regulator PP-1 (thru 1949)1 - generator: Г-112 - relay-regulator: PP-13 - rechargeable battery4 - valve5 - breaker/distributor: PM-056 - ignition coil: KM-017 - spark plugs (candles)8 - signal9 - lamp10 - driving lamp and low light11 - the parking light bulb12 - tail light13 - tail light sidecar14 - front light sidecar15 - control lamp16 - ignition switch17 - key18 - fuse19 - switch beam and dipped beam20 - lever switch near and far light21 - horn button signal22 - Ignition control stick23 - fuse lamps24, 25 and 26 - high voltage wires27, 28, 29 and 30 - bundle of low voltage wires31 and 32 wire lanterns sidecarPositive-GroundManualSparkAdvanceHornButtonHi/Lo BeamSwitchBreaker/Distributor(PM-05)BatteryGenerator(Г-11A, 1950+)Regulator(PP-1)Sidecar FuseIgnition Coil(KM-01)HornSpark Plug(candle)

Ural (Урал) M-72with Voltage Regulator PP-31(1950+)1 – generator: Г-11A)2 - relay-regulator: PP-313 - rechargeable battery4 – valve5 – breaker: PM-056 - ignition coil: B2B7 – spark plugs (candles)8 – signal9 – lamp10 - driving lamp and low light11 - the parking light bulb12 - tail light13 - tail light sidecar14 - front light sidecar15 - control lamp16 - a central switch17 – key18 – safety19 - switch beam and dipped beam20 - lever switch near and far light21 - button signal22 - Ignition control stick23 - fuse lamps24, 25 and 26 - high voltage wires27, 28, 29 and 30 - bundle of low voltage wires31 and 32 wire lanterns strollerManualSparkAdvanceHornButtonSpark Plug(candle)Positive-GroundHi/Lo BeamSwitchBreaker/Distributor(PM-05)BatteryGenerator(Г-11A)HornRegulator(PP-31)Ignition Coil(B2B)

1941 Dnepr (Днепр)) M-72, MK-750, K-750M Kand MT-12Distributor/Breaker(PM-05)with PM-05 Distributor/Breaker PointsIgnition Coil(KM-01)HornGenerator(Г-11)Regulator(PP-1)BatteryHi/Lo BeamSwitchHornButton

Early Ural (Урал) M-72 (1942)ManualSpark AdvanceHornG-11 GeneratorPP-1 1 RegulatorKM-01 CoilPM-05 Breaker/Distributor3MT-7 7 BatteryHi/Lo BeamSwitchGenerator(Г-11)Regulator(PP-1)Breaker/Distributor(PM-05)Positive GroundIgnition Coil(KM-01)Battery

Ural (Урал(Урал) M-72with Г-11A generator and PP-31 regulatorRegulator(PP-31)Hi/Lo BeamSwitchDistributor/Breaker(PM-05)BatteryManualSpark AdvanceHornButtonNote: Positive-Ground

Dnepr (Днепр) Later M-72 (1955)with Г-11A generator and PP-31 regulatorManualSpark AdvanceHi/Lo BeamSwitchRegulator(PP-31A)Generator(G-11A)HornIgnition Coil(IG-4085B)Breaker/DistributorPM-05Positive GroundBatteryG-11A AlternatorPP-31A RegulatorIG-4085B CoilPM-05 Breaker/Distributor3MT-14 Battery

Dnepepr (Днепр) Early K-750andand K-750M(withIgnition Coil B2B and Distributor PM-05 for Manual Control of Firing Angle)HornIgnition Coil (B2B)HornButtonBreaker/Distributor(PM-05)BatteryGenerator(Г-11A)FootBrake-LightSwitchHi/Lo BeamSwitchRegulator(PP-31A)1 - lamp beam and dipped beam, 2 - key 3 - safety 4 - lamp, 5 - central switch, 6 - wire “ground", 7 - high voltage wire, 8 –spark plugs, 9 - high voltage 10 - ignition coil, 11 - front light stroller, 12 – horn, 13 - wire front canopy sidecar, 14 - tail lightsidecar, 15 - tail lamp of motorcycle, 16 - gauge stoplight, 17 - Relay-regulator, 18 – generator, 19 – battery, 20 - Low voltagewiring loom, 21 - the wire "battery – ground, 22 - breaker, 23 - valve, 24 - high voltage wire and 25 - button signal 26 - wiresignal 27 - advance ignition; 28 - cord switch driving and parking light, 29 - switch to driving and parking light, 30 - controllamp, 31 - the parking light bulb, 32 - lamp illuminated; 33 - Connecting Jack wires, 34 - cable sidecar lamps, 35 - wire fromthe sensor to Stop lamp, 36 - wire from the connector to the lamp lighting plate

Dnepr (Днепр) Early K-750, K-750M Kand MT-12with PM-05 Breaker/Distributor and B2B Ignition CoilTurnSignalBattery 3T-6 or 3MT-7Generator(Г-414)Ignition Coil(B2B)HornBreaker/Distributor(PM-05)1 - switch indicators P-201 11 - Shifters Ignition 21 - Lamp A6-15 stop-signals (only in the lamp, or OP-230 OP-246)2 - The right front indicator lamp on a motorcycle-alone 12 - fuse 15A 22 - battery 3MT-6 or 3MT-73 - Flasher PC-419 13 - central switch (on M-72 & K-750 slightly different notation terminals) 23 - right rear indicator lamp on motorcycle-alone4 - lamp head light headlamp A6-32, 21 or A6-32 +32 14 - bulb illumination A6-2 scale speedometer 24 - relay-regulator5 - parking light bulb headlights 15 - generator 25 - stop light switch6 - Left direction indicators 16 - control lamp of the generator A6-0.25 26 - headlight rear position lamps7 - chopper PM-05 17 - ignition coil KM-01 or B-2B 27 - horn C-358 - light switch (located in the housing headlights) 18 - Splitter 28 - horn button9 - cable Shifters Ignition 19 - Indices turning right (sidecar)10 - lever light switch 20 - front position lamp sidecar

with PPDnepr (Днепр)) Later K-750PP-302 Regulator, , PM-05 Breaker/Distributor and B2B Ignition CoilHi/Lo BeamSwitchHorn(C-37)Ignition Coil(B2B)Generator(Г-414)Regulator(PP-302)Breaker/Distributor(PM-05)Battery

Dnepr (Днепр) K-750, K-750M Kand MT-12Ural (Урал(Урал) M-61TurnSignalGenerator(Г-414)Flasher UnitBattery(3MT-6 or 3MT-7)FootBrake-LightSwitchHornHi/Lo BeamSwitchIgnition Coil(B2B)Manual Spark AdvanceHornButtonBreaker/Distributor (PM-05)

Dnepr (Днепр(Днепр) K-750MHi/Lo BeamSwitchG-414 GeneratorPM-302 RegulatorB2B CoilPM-05 Breaker3MT-6 6 BatteryHorn(C-37)Ignition Coil(B2B)Generator(Г-414)Regulator(PP-302)BatteryBreaker/Distributor(PM-05)

Breaker/Distributor(PM-05)K-750M

Breaker/Distributor(PM-05)K-750, MB-750

Dnepr (Днепр)) Early K-650with PM-05 Breaker/Distributor and B2B Ignition Coil7&8-Oil Pressure Sensor (MM-106) and Emergency Light15- Spark Plug (Candle) (A8)16-Interrupter/Distributor (PM-05)18-Horn (C37A)22-Foot Brake-Light Switch (BK854)23-Regulator (PP-31A)24- Generator (Г-414)25-Battery (3MT-12)27-Horn Button29-Dimmer SwitchOil-Pressure Sensor(MM-106A)brnblkyelgrnTurnSignalvioblkvioDistributor/Breaker (PM-05)blkblkIgnition Coil(B2B)Generator (Г-414)blkgryHornblkblkvioblkgryFootBrake-LightSwitchwhtFlasherbluredyelbluwhtBatteryRegulator(PP-31A)whtgrnblkbluwhtgry

Dnepr(Днепр) Early K-650and MT-9with PM-05 Breaker/Distributor and B2B Ignition CoilIgnition Coil(B2B)Horn(C-37A)Oil-Pressure Sensor(MM-106A)Breaker/Distributor(PM-05)Generator(Г-414)BatteryVoltage Regulator(PP-302)Hi/Lo BeamSwitchHornButton

Dnepr (Днепр) MTMT-9 with Manual Control of Firing Angle(B2B Ignition Coil and PM-05 Breaker/Distributor)Oil-Pressure Sensor(MM-106A)Ignition Coil(B2B)Generator(Г-414)Regulator(PP-302)Breaker/Distributor(PM-05)

Dnepr (Днепр) MT-9:Manual Control of Firing Angle(B2B Ignition Coil and PM-05 Breaker/Distributor)Oil-PressureSensorTurnSignalHornIgnition Coil(B2B)FootBrake-LightSwitchFlasherHornButtonBreaker/Distributor(PM-05)BatteryHi/Lo BeamSwitch

Dnepr (Днепр(Днепр) MT-1231.Breaker/Distributor(PM-05)

Dnepr (Днепр) MB-750, MT-12 (1961)G-414 GeneratorPP-302 RegulatorB2B CoilPM-05 Breaker3MT-12 BatteryIgnitionCoil(B2B)Generator(Г-414)VoltageRegulator(PP-302)HornDistributor/Breaker(PM-05)Battery