DL650 alternator

Discussion in 'Land of the Rising Sun: ADV Bikes from Japan' started by darkstar, May 2, 2005.

  1. darkstar

    darkstar think more; use less.

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    What is the power output of the wee-strom alternator? I've read a lot of comments about its relative weakness especially when considering electric accessories? I've added heated grips to my DL650 (boy are they nice), is that all the juice I have to work with? Forgive my ignorance (to be honest I don't even know where the alternator is on the bike), but it seems to me that upgrading the alternator shouldn't be a big deal. In the 4x4 world its done all the time. Are high power aftermarket alternators really rare in the motorcycle world? I've even read that it was a deal breaker for someone considering purchasing a DL650.

    Thanks,
    Darkstar
    #1
  2. Bueller

    Bueller Cashin?

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    400 watts is the total output. It isn't easily upgradeable like a car because the "alternator" actually consists of seperate components in different locations on the bike.

    Regardless, the Strom has enough spare current to run heated grips and a heated jacket, but not much more. However, having said that, I was running two heated jackets on my strom yesterday without issue, but both jackets were turned up only about 1/2 way.
    #2
  3. darkstar

    darkstar think more; use less.

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    Thanks for the 411. Good to know that I still have a few extra watts to work with.
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  4. cap

    cap Vice of Reason

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    FYI, the DL650 and the DL1000 have "stators" rather than alternators.

    Their is some info circulating that claims that the DL's have about an extra 75 watts of capacity over the basic requirements to run the engine, lights, and displays. This information is posted on the Powerlet Products site... I have no idea if this information is accurate.

    However, some users have the ability to measure their charge voltage while running. And one such user on the Vstrom forum claimed that using heated grips and heated jacket combined to drop their charge voltage below 11 volts. If the charge voltage drops that low, then the system doesn't have enough capacity for the load.

    I think it is clear that the DL's charging systems have marginal capacity. Interestingly enough, the use of a headlight modulator can improve the situation. By reducing the duty cycle of the voltage applied to the headlight circuit, a headlight modulator can save capacity. Some users save power by using only one headlight.

    Cap
    #4
  5. Global Rider

    Global Rider Alps Adventurer

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    Isn't a stator a part of every alternator? Its the stationary set of windings (there are three of them - ie:3 phase) attached to the housing and the rotor is either a set of windings or a magnet that rotates.

    I think they're called "alternators" because they produce "alternating" current and voltage.
    #5
  6. Lobby

    Lobby Viel Spass, Vato!

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    Bump to an old thread, cause I have the same question.

    Does anybody know of alternator upgrades?

    Thanks!
    #6
  7. PeterW

    PeterW Long timer

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    If you got clever with the voltage regulator unit you MIGHT coax a bit more out.

    Most bikes (including the DL's) use a really old design with a three phase diode rectifier and SCR's that short the output when the voltage gets too high. That dumps a lot of heat into the VR assembly and isn't particularly efficient

    Of course - it wastes least energy at full load :), but a syncronous rectifier/ regulator using MOSFET's instead of cheap diodes and SCR's should get you another 5-10% - it may even gain you more. ( The power loss due to the voltage drop across the diodes goes from ~1V to near 0).

    That may not sound like much - but if 75W spare is correct, 10% overall is another 40W and 50% more power you get to decide what to do with,

    Component costs are higher, but frankly what we are charged for the current regulators is obscene - the components are dirt cheap.

    Unfortunately for the rest of you, I live in a part of the world where heated grips and heated clothing is the least of my problems.

    Try www.edn.com as a starting point. Note that most of these designs are intended for >100kHz operation, but the idea does work at much lower frequencies as well. Normally cutting losses by doing this just isn't worth the effort - it may be on a bike.

    Pete
    #7
  8. BlueStreak

    BlueStreak Adventurer

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    These folks are supposed to be working on an upgraded replacement stator.
    https://www.electrosport.com/
    #8
  9. Texspeleo

    Texspeleo Opportunivore

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    This is an untested theory, but it stands to reason that if you installed an HID headlight kit, you could lower the draw, improve the quality of the light output, and have greater reliability than that of incandescent bulbs. The extra 40W (HID replacement kits generally claim 35W X 2 bulbs vs. 55W X 2 OEM bulbs) could make a pretty big difference for heated clothing, coffee warmer, toaster, microwave, whatever. An HID conversion is on my 'someday' list.
    #9
  10. Texspeleo

    Texspeleo Opportunivore

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    And damn, were the grip heaters nice this morning (snowing in Colorado Springs right now).
    #10
  11. PeterW

    PeterW Long timer

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    It'll work but .... the problem is that the regulator unit has to disipate anything that doesn't get dumped into the fuel pump, ECU, ignition and lights. So if you install HID's and save 60W of lighting - when you turn the heated jackets off, that little sucker is going to get warmer. The DL isn't bad, at least it's VR is sitting in the breeze. (Unlike the old BMW F650's - after I my first regulator blew the replacement had a 12V PC CPU fan stuck on top of it until I sold it.).
    "What's that noise ?" -
    "That's the turbocharger winding up"...

    Same problem wit a better stator, you may start frying regulators.

    Pete
    #11
  12. Albie

    Albie Kool Aid poisoner

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    Actually, the Strom isn't as bad as most bikes. Another way to get some more available power is to switch to LED tail/brake lights.
    #12
  13. Texspeleo

    Texspeleo Opportunivore

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    Know of any good one for the strom? I like Dual Stars for the KLR, but the 1157 LED replacement bulbs seem pretty lame.
    #13
  14. BuellDualSport

    BuellDualSport Banned

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    Hyper Lite has a V specific set of Rear LED that are supposed to be plug and play.

    The 07 Wee has about 110 w of extra power available.

    A set of Fog Motolights with 35 W bulbs, leaves about 40 w available. This should run a jacket or grips, but not other lights, without depleting the battery.

    The "other" site suggests a Volt Meter as part of the Farkles for a V.

    YRMV

    Ride Em


    :clap
    #14
  15. Lobby

    Lobby Viel Spass, Vato!

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    Really? :ear

    :evil
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  16. rxcoop

    rxcoop persnickety curmedgeon

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    anybody got any idea how i could run with just one headlite on low beam, then activate both on high beam ? at least this way i 'should' have extra zap in stop 'n go traffic....right[​IMG]
    #16
  17. BuellDualSport

    BuellDualSport Banned

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    Really


    "There have been no reports so far about changes to the alternator and ~100 watts free has always been the norm since the introduction of the 650."




    Ride Em


    :deal

    <!-- /content --><!-- signature -->
    #17
  18. gregbenner

    gregbenner Long timer

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    I have a sidecar mounted on my 05 DL1000.

    The SC has a tail light/turn signal and a front runninglight/turn signal. The running lights are always on. Don't kne the watts

    Also have a Hella driving light hich is always on, its 55 watts.

    No problems so far, over 4.000 miles on the rig.

    I'm in process of adding several farkles, including a voltmeter.

    Both the bike and SC have powerlet plugs for heated clothing (not used yet), the new farkles will include cruise control and heated grips.

    My local indy shop, which is very good, has told me they can get the "alternator" rewound for more output. They are a no BS shop, usually correct when they have an opinion.

    I'm going to South America (bike trip) and when I return should be able to find the limits of the stock output, and likely whether or not a rewind will work.

    I'll post as I figure it out.

    greg
    #18
  19. Texspeleo

    Texspeleo Opportunivore

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    A greater number of winds on the stator seems to be how wattage is increased from what I read (and from some very vague recollections from a college education spent drinking 15 years ago). I've seen a high output stator for the DR650 around, but haven't yet looked on the microfiche to see if the part numbers cross reference or not. One of these days I'll put together a list....
    #19
  20. Texspeleo

    Texspeleo Opportunivore

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    #20