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Thread: My first bike

  1. #1
    Registered User R65LS's Avatar
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    My first bike

    I just purchased my first bike. It's an R65LS. Is there any person here who has one as well (I assume there is). I have a few trouble shooting questions. I bought the bike for $1500 with the hard case saddle bags. I think it was a steal. Was it, or not? It is an 83. All it needs is a new speedo, front brake job, and either a generator or battery (not sure which yet). Any info would be appreciated.

    R65LS

  2. #2
    Registered User widebmw's Avatar
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    Smile

    The best place to go for infromation on your bike is,
    www.airheads.org
    They have many technical articles and you can get on their online list for specific information

  3. #3
    eric2
    Guest

    former r65 owner

    Hi R65ls !

    I bought one of these rascals in 1984 while I was in the Army,
    I wished it would have had SAddlebags! It was an 82
    in henna red with only 7k miles and i paid $2000 for it.

    $1500 seems fair, depending on the mileage and condition.

    Over the next 12 years I put an additional 80K miles
    on it, here are some points about it I recall.

    Alternator output is quite low for city driving, the stop and go
    traffic combined with headlight on always will kill the battery.
    I would put a switch in to turn the light off for those situations
    or get a low draw low beam h/l.

    Rear main seal went out at 40K lubing the clutch and requiring replacement. Normal wear I guess

    Ignition coil blew up on the road, about $120 at the time. Only
    time it left me stranded.

    Alternator stator got an open in the windings, $35 to rebuild
    or $200 new. I had mine rebuilt. (this a common airhead issue)
    2 voltage regulators, one diode board.

    rear drive always leaked oil onto the brakes, never was able to resolve that. replaced it several times.

    Before learning that bi-annual brake flushing is a necessity
    I rebuilt and eventually replaced the front master cylinder, about $200.

    Carbs seemed to leak a lot, a royal PITA. I also replaced
    throttle linkage a couple times, and the vaccum diaphrams.

    Tough to start when its colder than 40 F if you don't keep the battery charged.


    I rode the little thang to Maryland, Kentucky and all over Texas. It's a nimble little bike that is very horsepower limited. top speed
    ~ 110 mph.

    I sold mine in 97 for $1600, the k100 that replaced it got
    as good gas mileage and was much quicker with better brakes
    too. My current ride is a k1200rs, and thats as much of an improvemnt over the K100 as the k100 was over the r65.

    I seemed to be prone to puttin holes in the r65s oil pan, fixed
    everytime with epoxy.

    The r65 has a lot of odd parts on it, heads are different,
    carbs, a lot of stuff won't interchange with other airheads.

    You can't bolt bigger jugs from another airhead either, the crank opening for the cylinders needs to be machined wider.

    There have been a few people who have regretted doing performance mods to this bike. I recommend keeping it stock
    unless you find a good used r90 or r100 motor to swap.

    Enjoy and learn the bike. It's a very forgiving driver!

  4. #4
    Focused kbasa's Avatar
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    Re: My first bike

    Originally posted by R65LS
    I just purchased my first bike. It's an R65LS. Is there any person here who has one as well (I assume there is). I have a few trouble shooting questions. I bought the bike for $1500 with the hard case saddle bags. I think it was a steal. Was it, or not? It is an 83. All it needs is a new speedo, front brake job, and either a generator or battery (not sure which yet). Any info would be appreciated.

    R65LS
    So how 'bout those questions? What's busted, in particular and what do you need help with?

    Dave Swider
    Marin County, CA

    Some bikes. Some with motors, some without.

  5. #5
    Alps Adventurer GlobalRider's Avatar
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    Re: My first bike

    Originally posted by R65LS
    I just purchased my first bike. It's an R65LS. Is there any person here who has one as well (I assume there is).
    I don't have the LS version, but I do have an R65 with the somewhat rare and NLA factory bikini fairing as well as dual discs out front.

    A good little bike, but a bit small for me. That said, it has taken me through some of the best riding anywhere...the Alps. The price was right and I didn't see the point to having a lot of money tied up in a bike overseas that gets used one month every year.

    Originally posted by R65LS
    All it needs is either a generator or battery (not sure which yet). Any info would be appreciated.
    Well if you can start it up, place a voltmeter across the battery terminals. With the engine at 2000 rpm or more, you should see voltage in the high 12s to mid 13s, maybe higher or lower depending on rpms and the state of your battery. You might put the high beams on to load the system. If you have an electric vest, plug that in as well. If it is overcharging, you might have boiled the water out of the battery - check the level. Anything above the mid 14s is too high.

    Get back with some numbers and we'll go from there...rotor, diode board, wiring...lets hope not.

  6. #6
    Registered User R65LS's Avatar
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    Jacksonville Beach, FL
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    Support

    Thank you for all your reply's. This seems to be a very supportive club. I will get to the testing of the battery and get back with results. I tested it two weeks ago and it came out like this...
    Bike not running-battery read 12.v
    Bike at 3,000rpm-battery read 12.5v
    That does not seem good to me. Standby for a second test.

    R65LS

  7. #7
    eric2
    Guest

    too low

    That isn't good, you should see ~13.5-14.5 volts at 3000 rpm.
    Is the alternator light on? How many miles are on it?

    When my stator failed the lamp glowed very dimly, couldn't see it during the day and barely at night.

    I would check the stator for an intermitent open and the diode board.

  8. #8
    Focused kbasa's Avatar
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    Re: too low

    Originally posted by nfgeezer
    That isn't good, you should see ~13.5-14.5 volts at 3000 rpm.
    Is the alternator light on? How many miles are on it?

    When my stator failed the lamp glowed very dimly, couldn't see it during the day and barely at night.

    I would check the stator for an intermitent open and the diode board.
    I'd bet against the diode board. When they fail, they usually result in an alternator light running at half intensity.

    I'd check the voltage regulator too.
    Dave Swider
    Marin County, CA

    Some bikes. Some with motors, some without.

  9. #9
    Alps Adventurer GlobalRider's Avatar
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    Re: Support

    Originally posted by R65LS
    I tested it two weeks ago and it came out like this...
    Bike not running-battery read 12.v
    Bike at 3,000rpm-battery read 12.5v
    That does not seem good to me.
    No it isn't.

    Could still be a dud battery. Can you charge it fully using a battery charger. It should reach 14.4 volts when fully charged and then after having been disconnected for several hours it should read 12.6 to 12.8 volts.

    Does your "Generator" indicator bulb come on before starting the engine. If yes, good. If no, replace the bulb with the right one.

    Next, a few different things can be done that are equally easy. You can bypass the voltage regulator or you can measure the resistance of the rotor.

    Voltage regulator: pull off the connector (under the gas tank and to the right of the main frame tube) and using a short wire with male spades on it, connect the D+ and DF terminals of the harness. Now start her up and measure the battery voltage.

    Rotor: disconnect the negative battery terminal. Remove the front engine cover. Lift the rotor brushes and place a dry piece of cardboard between them and the rotor slip rings. Measure the resistance between the slip rings - about 3.5 ohms, but more likely "open circuit" if it has failed.

    Diode board can be tested using a meter as well. Not always a complete test as I like to use a curve tracer with the high current module in place.

    Get back to us.

    Hey, does this look familiar - not an LS, but...
    Last edited by Global Rider; 04-17-2003 at 11:47 PM.

  10. #10
    Aphasic GS Rider RON_B's Avatar
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    Here are some R65 Links for you.

    That's a fun little bike. I've got an 82. (and maybe one of these days I'll get off my lazy butt and re-build the carbs so I can ride it again)

    Good luck with it.
    AMA Charter Life, BMWMOA, IBA, CRBMWOA, CHI-TOWN CREW

    "The traveler sees what he sees, the tourist sees what he has come to see."

    G. K. Chesterton

  11. #11
    Blocking the slow lane
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    Everyone should experience an R65 once in their life. This bike is for sale, BTW.
    Attached Images Attached Images
    Last edited by jdiaz; 04-20-2003 at 10:11 PM.
    Jon Diaz
    BMW K75/K12GT
    BMWMOA Ambassador

  12. #12
    In need of a nap. paper's Avatar
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    Unhappy

    If only it were blue....
    2005 R1200GS 1985 R80 1981 R65
    2004 Triumph Sprint ST
    2002 Kawasaki KLR 650 1993 250 Honda Helix
    BMWMOA Life Member

  13. #13
    Blocking the slow lane
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    Painting it red added 8mph to its top speed.

    Jon
    Jon Diaz
    BMW K75/K12GT
    BMWMOA Ambassador

  14. #14
    Loose Cannon flash412's Avatar
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    Re: too low

    When my stator failed the lamp glowed very dimly, couldn't see it during the day and barely at night.
    My R75/5 conversion did that once. Turned out that the big fat red wire that is supposed to go to the battery from the diode board via the regulator had come loose at the regulator. Check for loose connections at the voltage regulator. (The VR is a rectangular shaped metal can or plastic box under the tank.)

    You should also REMOVE THE GROUND STRAP AT THE TRANSMISSION OUTPUT and then remove the front engine cover and look for something loose or awry under there. While you have it open, take a pencil eraser and rub the slip rings on the alternator to remove oxidation IF they are not all shiney looking. Put the cover back on and THEN re-install the ground strap.

  15. #15
    Bikrgirl
    Guest
    Hey,

    I have a sweet little 1982 R65LS. I bought it in Fitzgerald GA for $1300. It had 13,000 miles on it. Somebody had tried to make a Harley out of it (Georgia redneck) by putting a sissybar and highway pegs on it. There was a rats' nest in the airbox. We brought it home (Warner Robins GA). cleaned it up and painted it. That was two years ago. I now have 32,000 mi on it. It took me to the national in Redmond and in Trenton. The only thing we have really had to do is replace the diaphrams on the carbs. Its not the fastest bike in the world, but it is very dependable, and a lot of fun in the North Ga mountains : )

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