BMW R80RT/R100RT as all-weather bike

Discussion in 'UK Motorcycles' started by Nicholas Hartmann, Oct 27, 2003.

  1. [crossposted to uk.rec.motorcycles and rec.motorcycles]

    Since April of this year I have been riding my first motorized
    two-wheeler, an Aprilia Scarabeo 150 scooter. It's similar to a "real"
    motorcycle: 16" wheels, plenty of power for around town, just enough
    top speed for _short_ trips in the slow lane of the expressway
    (motorway). With the leg shield and footboard (and with added hand
    guards) it offers decent weather protection.

    The Urge to Upgrade is hitting now, and I've been considering a BMW
    R80RT or R100RT (1985-1995 vintage) as an eventual replacement.
    Reasons: it's not much larger than the Aprilia in any dimension, but
    substantially heavier (good for expressway stability); it would
    probably cost less than a new maxi-scooter (Honda Reflex/Jazz or
    Suzuki Burgman 400), which is another alternative; based on reports
    I've read, it is very reliable and sufficiently durable to outlast me;
    I finally get to drive a BMW.

    But from your collective experience, how _usable_ would an R80/100RT
    be? I spend most of my two-wheel time commuting five miles each way to
    and from the office and running errands; some day I would also like to
    tackle short-to-medium expressways drives (never more than 200 miles a
    day). Most importantly, I would like to do all this with as little
    regard for weather as possible (I live in southeastern Wisconsin, with
    an annual temperature swing from about zero to the high 90s F). How is
    the wind and weather protection of the RT? Which bits of me will
    freeze solid in winter, or get cooked in summer? Will the damn thing
    even start when the weather gets cold?

    Thank you in advance for any and all guidance.

    -- Nick
     
    Nicholas Hartmann, Oct 27, 2003
    #1
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  2. Nicholas Hartmann

    Hog Guest

    For ease of maintenance and reliability in a daily commuter go for a later
    monolever swinging arm boxer. They have many advantages mechanically
    although they are a touch more stifled for emissions.
    Think seriously on an R65 with an RS/RT or good aftermarket fairing (R80
    otherwise). It's a great little engine and with a K&N custom filter/jet kit
    returns 50mpg easily. The 100 is a great bike but runs a bit lumpy for town.
    For really cold weather fit a Hawker dry cell battery and run 5w-40w
    (semi)synth oil. It'll fire up every time but make sure the choke gaskets on
    the carbs are in good nick, they tend to get sucked in on the edge after a
    while. That oil will do for all year running or you could go 20w-50w mineral
    in hot summers.
    The RS fairing actually has better weather protection though it needs quite
    narrow bars. The cylinders keep your feet warm then you just need the heated
    grips.
     
    Hog, Oct 27, 2003
    #2
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  3. weight has *nothing* to do with stability.
    They are durable and well made, and addictive, if you like that sort of
    thing. But if you think you're buying a two-wheeled equivalent of a
    Five-series car, you aren't. They're *very* primitive in many aspects.
    It won't even get warmed up on a run like that. Buy a small scooter.
    Pretty good.
    If you find one with the optional heated grips, that's a bonus. And the
    cylinder help keep your feet toasty. In high temperatures, in summer,
    you do get a lot of heat reflected off the fairing, mind.
    Good question. Possibly not unless you invest in an aftermarket
    high-output battery.
     
    The Older Gentleman, Oct 27, 2003
    #3
  4. Nicholas Hartmann

    Gyp Guest

    In message <1g3i2rb.13r25w4v8fp5nN%>,
    Too true. I was amazed how long they take to get warm. I fitted an oil
    temp gauge to my 80RT a few years ago and after that stopped using it
    for short journeys.

    The other thought is that the charging system is pretty poor, so if it's
    used in winter about town with lights and heated grips etc, an optimate
    or similar is a good idea to ensure it keeps going (even with a big
    after market battery).

    Or any ideas on one of those twin alternator conversions?
     
    Gyp, Oct 27, 2003
    #4
  5. Nicholas Hartmann

    Hog Guest

    Is why I suggested the improved later model. You can get a high output solid
    state regulator from Motorworks which kicks the charge voltage in earlier
    and there are re-wind services. With that and a good battery should be no
    hassle.

    Don't know what you mean by twin alternator, are you thinking of the HD
    re-wind option?
     
    Hog, Oct 27, 2003
    #5
  6. Agreed about the heated grips. As an alternative to a fairing, I'd
    prefer a windshield and wider bars with GS type brushguards.

    The brushguards really help keep your hands warm and deflect drafts
    away from your sleeves. Also, in wet or icy conditions, I definitely
    prefer a more upright dualsport type riding stance.

    Rather than go for the pricey BMW heated grips, you may be better off
    going with a cheaper snowmobile heater which fits into the handlebars.

    You probably also want to buy some kind of a charger for the battery,
    plus a rainsuit, a bike cover (non-melting kind) and some kind of bag(s)
    to pack this stuff into.
     
    r_kleinschmidt, Oct 27, 2003
    #6
  7. Nicholas Hartmann

    Gyp Guest

    I have the motorworks high output regulator and it makes very little
    difference.
    HD rewind? No idea what you are on about.

    On a few bikes (mainly outfits to be honest) there are twin alternators
    fitted, running in parallel to give twice the output
     
    Gyp, Oct 27, 2003
    #7
  8. Nicholas Hartmann

    Platypus Guest

    Five miles? Pushbike.

    The RT fairing is a remarkable piece of kit. I find that the bit of me
    that gets coldest is my back, because of the way the wind curls round
    behind the fairing.

    --
    Platypus - Faster Than Champ
    VN800 Drifter, R80RT
    DIAABTCOD#2 GPOTHUF#19
    BOTAFOS#6 BOTAFOT#89 FTB#11
    BOB#1 SBS#35 ANORAK#18 TWA#15
     
    Platypus, Oct 27, 2003
    #8
  9. Nicholas Hartmann

    deadmail Guest

    If it's the same on a K, the bit of me that gets cold is my feet. The
    rest of me is warm enough, well following fitting the heated grips
    anyway.
     
    deadmail, Oct 27, 2003
    #9
  10. Nicholas Hartmann

    Platypus Guest

    Feet are much better protected on the boxer.

    --
    Platypus - Faster Than Champ
    VN800 Drifter, R80RT
    DIAABTCOD#2 GPOTHUF#19
    BOTAFOS#6 BOTAFOT#89 FTB#11
    BOB#1 SBS#35 ANORAK#18 TWA#15
     
    Platypus, Oct 28, 2003
    #10
  11. Nicholas Hartmann

    James Clark Guest

    But the K keeps the family jewels toasty.
     
    James Clark, Oct 28, 2003
    #11
  12. Nicholas Hartmann

    Hog Guest

    I suppose you have to load it up to notice? like twin spots etc.
    You can have the rotor rewound with heavy duty wire and more windings to
    boost the capacity.
    <boggle>
     
    Hog, Oct 28, 2003
    #12
  13. Nicholas Hartmann

    Gyp Guest

    No, not really. With everything off and the engine running >2,000 rpm I
    get 13.8 volts. On with the sidelights gives about 13.5 volts, on with
    the full beam brings it down to about 13. Switch on the front spot/fog
    and 12.5 is nearer the mark. Heated grips take it to well below 12.

    It's been like this since new and in that time it's had a new alternator
    and a new (high output) regulator
     
    Gyp, Oct 28, 2003
    #13
  14. Nicholas Hartmann

    GB Guest

    I would urge you to consider getting a Yamaha XT600e.

    Just rode mine out into the deserts of Australia (5000km trip)..... often
    cruising at 130km/h.

    300km per tank... never missed a beat.

    I also normally commute 5km per day in the city.

    Great bike... if you don't mind a little rain all over you.

    GB.
     
    GB, Oct 28, 2003
    #14
  15. Nicholas Hartmann

    Hog Guest

    I think Sherlock can point you in the direction of the rewind specialist.
     
    Hog, Oct 28, 2003
    #15
  16. I would urge you to consider getting a Yamaha XT600e.
    Which I do, which was the point of looking for a bike with a fairing.
    We're also a bit short on deserts around here. But thanks for the
    recommendation.

    Thanks also to everyone who chimed in on this topic. I will stick with
    what I'm riding at least until Spring, and then see how (and whether)
    I'm inclined to upgrade. Happy riding,

    -- Nick
     
    Nicholas Hartmann, Oct 28, 2003
    #16
  17. Nicholas Hartmann

    Gyp Guest

    Hello, this is England calling.

    I suspect the word you are looking for is muff.

    HTH
     
    Gyp, Oct 28, 2003
    #17
  18. Personally I'm always looking for it.
     
    Demetrius XXIV and the Gladiatores, Oct 28, 2003
    #18
  19. Early BMW R100GS brush guards work pretty well on an R65. Later
    ones don't fit exactly right on my '88, but are close enough to work
    with a little bit of bodging.

    My bike came with a set of heaters installed inside the bars and I find
    I'm quite happy with them. The bar ends were sealed with what looks
    like urethane foam. Not sure, but suspect there's more near the middle of
    the bars. They do a pretty good job, though it takes a few minutes
    to heat through the bar and grip. Once things have heated up though
    they stay warm.

    I have heard people complain about in-the-bar heaters when using
    aluminum bars, but on steel bars with some insulation, they work fine.
     
    r_kleinschmidt, Oct 29, 2003
    #19
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