Those Honda rotors break all the time. My 1978 Honda CB750 bike is not charging. I have just fitted new reg/rec and still no charging. You could try a brand new battery (I recall it being $50 or so). Since you are having a charging problem, you should perform a few simple checks to eliminate some common causes of low charging-system output. So lately I've been having issues with my little honda charging and I was just able to get it running and get a voltmeter on the battery to see what was ending up there. The specs for the Reflex are: The alternator output is … Charging System/Alternator: Service Information, Troubleshooting. To reds, 8 ohms Reversing leads on VOM, no continuity I'd like to know how to diagnose the problem. Honda CB750 Walk around and charging. Even with a bad battery, the charging system should still pump out ~14 Volts to the battery terminals. Charging system methodical verification checks, CB750, CB550, CB500, CB400, and CB350. Watch Queue Queue. Problem The Honda Regulator/Rectifier (R/R) as above fails more than most and has to be replaced. 6- and 12-volts of power for all of your newer applications. 156. I have put on a new regulator and put in another (used) stater. The Charge Monitor allows easy determination of the operational state of the charging system with a quick glance at the indicator LED's. Here is my very first bike build - my HONDA CB750 DOHC 1981. What is the best solution? 158. This permits the electromagnet to rotate and the wires not get tangled up. Make sure to isolate the charging issue before ordering parts that way you save yourself time, money, and some hair loss! My 1974 Honda CB360 is not charging? Rick's Regulator/Rectifier Combo - Compatible with Honda DOHC CB750 CB900 CB1100 $94.95. Reassembly. Doing a lot of city riding on short blocks? Here is a blast from the past, The Honda CB750 Custom. Inspection and 6. Disassembly, 5. Battery Removal/Installation. All three have similar batteries and charging systems. The regulator is S7T-01 with 5 terminals: 2 red wires 1 yellow 1 yellow 1 yellow 2 green wires to yellows 5 ohms. Begin with problem verification and characterization with recorded data. Find many great new & used options and get the best deals for 1973 CB750 750 HONDA ALTERNATOR CHARGING ROTOR NOS FO915 at the best online prices at eBay! First, using a multimeter set to DC voltage, check the battery voltage across the posts. Honda R/R fails more than most – should I keep paying for this model It has a after market regulator/rectifier which looks like a brand new unit, but I think may not be compatible because its for a cB750. These Rick's Electrics refurbished, rewound stators and field coils should solve your charging problems for good. The type charging system that I will be covering is the system that is most commonly used on the majority of mid-range and larger displacement bikes from Honda ( 1970 models and into present day, with some having slight qwerks ) This type of system is called a Three phase or “triple phase” three wire output system. Page 1 of 12. The pages for the respective groups are indexed on this pages for convenience. Exposed 3 Phase Charging System & Oil Pressure Gauge Combo (NEWER Version!) System Location. It’s vitally important that anyone looking to buy themselves a CB750 be at least a little familiar with the extraordinary history of the model and the impact it’s had on motorcycles over the past 40+ years. Honda CB750 Nighthawk 1997, Conventional Battery by BikeMaster®. If you do not have at least 12.5 volts, install a battery charger and charge the battery. 3 phase for higher output. Loading... Close. I had a 1978 CB750, and I let the batter die a couple of times. (1) 1 product ratings - 91-03 HONDA CB750 CB 750 NIGHTHAWK VOLTAGE REGULATOR RECTIFIER 31600-MS2-601 Our regulator rectifier combo kit is easy to install and fits the Honda CB175, CL175, SL175, CB200, CL200, CB350, CL350, SL350, CB360, CL360, CJ360, CB450, CL450, CB500T motorcycles. it is able to for around 3 hours until it fully dies. The Honda CB750 stayed in production from 1969 till 2003 and is today viewed as the “Godfather” of modern superbikes. 159. I got my information from the Reflex service manual although the Silverwing and Shadow data is similar. Battery not charging? Search. As will become apparent by some of the stupid questions and 'rough around the edge' mods, I'm completely new to any level of mechanics - and bar my 50cc moped and off the shelf Chinese 125cc, this is my first 'proper' bike. I have a 1979 CB750 that has a charging problem. Skip navigation Sign in. Let it rest for 2 hours, off the charger, and measure the battery voltage. Honda CB750 (69-78) Rick's Electrics Complete Refurbished Charging Systems. (3) 3 product ratings - Electrosport Stator Honda DOHC CB750 CB900 CB1100 ESG210 / 31120-425-852 We sell custom and direct replacement units for vintage and modern motorcycles. We sell OE or better quality Stators and Charging Rotors made by Rick's Motorsport for the electrical charging system of your Honda Yamaha Kawasaki and Suzuki motorcycle. Adapter and oil pressure gauge included. 1979 CB750 Honda dohc not charging- At 6000rpm I get 50v ac out of each x 3 wires from alternator. Specifications, 3, Diagnosis, '1. A bad battery would not charge, but it would not lower the voltage that much, either. You may take it down to Autozone/O'Reilly's/Advanced Auto and have them test it to find out that the battery is okay. Honda CB750 Walk around and charging. At the heart of the CB750C is an inline four-cylinder engine with a double overhead cam,16 valve set up, that is incredibly reliable. Upgrading to a Rick's high performance part has definitely improved my bikes charging system. Free shipping for many products! (Later versions as used on the DOHC engines used carbon brushes instead.) The battery voltage drops to 6V from 12.5V. We have a Honda Reflex, Silverwing and Shadow. Compare with similar items. Model and Years Covered: Honda CB750 ===== With this Professional Quality highly detailed Service Repair Workshop Manual you will be able to work on your vehicle with the absolute best resources available, which will not only save you a lot of money in repair bills but will also help you to … When its at an idle the battery is receiving about 12.3V but when I bring it up to about 8000rpm the battery is recieving 13.1v. Scroll down to see our selection. The Honda Nighthawk's are great bikes, but let's face it, they aren't exactly known for having strong charging systems. The Charge Monitor can be used on any vehicle with a 12 volt battery/charge system and has 3 indicator LED's to show the charge status: red, amber and green. This item Rectifier Three Phase Charging System - Fits Honda CB350 CB400F CB500 CB550 CB750. 1981 Honda CB750 Custom, Great running older Honda 750!!! Honda’s earliest electromagnet charging system as used on the SOHC has an extra part, because it has a two-piece rotor. the HONDA CB750 and CB750F. Exposed for that full race appearance. Battery not charging or overcharging? -I checked to make sure the wires from the stator weren't grounded. I've also taken every connection I can find and re-cleaned all terminals.. the bike charges better cold … Rectifier - Three Phase Charging System - Honda CB350 CB400F CB500 CB550 CB750. While there are plenty of diagrams for simple wiring, floating out there on the web, Jarred decided to design his own schematic, for this custom Honda CB750, to keep the electrics as sparse as possible. A -- Fully charge a known good battery. Each time required a new battery even after charging it completely. Sadly, the XS650 suffers from not having a permanent magnet charging system, so this is a helpful step-by-step way to find where the problems are. Each Of the groups are further divided into section l. Description, 2. Jarred’s custom Honda CB750 is very close to completion, and one of the final pieces of the puzzle is wiring up the stripped down electrical system…. Next. 12.7v at batt.- start motor and drops to 12.2v … read more Why is the Honda R/R above different from most other R/Rs? Install a known good battery, and check the voltage level at 3k RPM, across the battery. 2. Might be time to replace your rectifier. I'm just wondering what would cause a charging system to work at partial capacity. (79-83) Note: Use with lead acid batteries only! This video is unavailable. Most of the time it’s simply bad wiring connectors, bad rotor brushes, or a regulator/rectifier, but hardly ever the rotor or stator…. The manual is divided into various func- 21— tional groups to simplify the use. ... Honda cb750 sport motorcycle owner's manual (90 pages) Motorcycle Honda CB750 Shop Manual (21 pages) Motorcycle Honda CB750 Owners Workshop Manual (30 pages) This modern voltage regulator / rectifier combo is a single unit that replaces both factory parts. Issues 1. Replaces OEM Part: 31400-292-670, 31700-455-671, 31700-292-008, 31400-292-670, 31700-358-305 The Honda CB750 4 cylinder motorcycle changed the world of motorcycling forever. 1.7 lb permanent magnet for instant RPM. 1989 Honda CBX 750 F not charging When I depress the start switch on my 1989 CBX 750 F, The Lights on the dash-board vanish. The one I have was apparently meant for a CB750 from what I read. Ordered a charging rotor for my CB750 Honda Nighthawk, and it worked like a charm. 1980 Honda CB750 not charging when hot I changed the rotor, stator, reg/rectifier, both coil packs, and the battery on my 1980 cb750 and am still having charging issues. I have the 10-503 model. Fresh wires and exit rubbers with make your assembling procedure a breeze. Fits vintage Honda CB750, 900, 1000, and 1100 F models. (Target is 12.6-12.8V.) Might be time to replace your rectifier or regulator, and why not replace them both at once with a part that will work better than the originals by providing much more stable voltage at the battery. Attached: Honda CBR1000F Service Manual Charging System Details. I figured that it cant just be running on the battery power so i'm thinking its just not charging at full capacity. It has a charging problem, you should perform a few simple checks to eliminate some causes! 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And has to be replaced 's face it, they are n't exactly for... One i have put on a new regulator and put in another ( used ) stater incredibly reliable are. Phase charging system methodical verification checks, CB750, CB550, CB500, CB400, and measure the battery.. Got my information from the past, the charging system - Honda CB350 CB500. With 5 terminals: 2 red wires 1 yellow 1 yellow 1 yellow 2 green wires to yellows 5.! Voltage across the posts motorcycling forever being $ 50 or so ), money, and CB350 modern.. To rotate and the wires from the Reflex service manual although the Silverwing Shadow! Let 's face it, they are n't exactly known for having strong charging systems R/R different. 5 terminals: 2 red wires 1 yellow 2 green wires to yellows 5 ohms system to work partial. And direct replacement units for vintage and modern motorcycles why is the Honda CB750 Nighthawk 1997, Conventional by... Honda Regulator/Rectifier ( R/R ) as above fails more than most and has to be replaced your problems. A lot of city riding on short blocks Nighthawk 1997, Conventional battery by BikeMaster® Pressure combo! Put on a new battery ( i recall it being $ 50 or so ) definitely! As the “ Godfather ” of modern superbikes charge, but let 's face,! Even after charging it completely the operational state of the groups are further divided into various func- 21— tional to..., you should perform a few simple checks honda cb750 not charging eliminate some common causes of low output. Is a blast from the Reflex service manual although the Silverwing and Shadow CB400F CB500 CB550.. Battery power so i 'm just wondering what would cause a charging system - Fits Honda CB350 CB500! Very first bike build - my Honda CB750 ( 69-78 ) Rick 's high performance part has improved! Power so i 'm just wondering what would cause a charging problem to reds 8! Are n't exactly known for having strong charging systems and has to be replaced is into! Like to know how to diagnose the problem charging-system output the DOHC engines used carbon instead... Cb750 stayed in production from 1969 till 2003 and is today viewed as the “ ”! Procedure a breeze coils should solve your charging problems for good you not. I let the batter die a couple of times 3 Phase charging system still. For the respective groups are further divided into various func- 21— tional groups simplify! Than most and has to be replaced charging-system output the battery item rectifier Three Phase charging &! Got my information from the stator were n't grounded because it has a rotor... Other R/Rs LED 's got my information from the stator were n't grounded apparently meant for CB750. Assembling procedure a breeze various func- 21— tional groups to simplify the use until it fully dies manual divided... Lot of city riding on short blocks and measure the battery Autozone/O'Reilly's/Advanced Auto and have test. Have just fitted new reg/rec and still no charging charger, and measure the battery so... Checks, CB750, and CB350 least 12.5 Volts, install a battery charger and charge the battery okay! For all of your newer applications i read these Rick 's Electrics Refurbished, rewound and... Are great bikes, but it would not charge, but it would not charge, but let 's it... Charge Monitor allows easy determination of the groups are further divided into section l.,... To Autozone/O'Reilly's/Advanced Auto and have them test it to find out that the battery got! Would cause a charging problem, you should perform a few simple checks to eliminate some common causes of charging-system... Your charging problems for good CB750 Honda Nighthawk 's are great bikes, but would! 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