DR750 & DR800 owners thread

Discussion in 'Thumpers' started by MCmad, Jul 14, 2008.

  1. Bambi

    Bambi Been here awhile

    Joined:
    May 14, 2009
    Oddometer:
    746
    Location:
    Linz upon Rhine, Germany
    Hi Rob,
    no, that has nothing to do with relationship ... Stefan is compairing the number of habitants in a square-km in German regions and in Australia. Although I think, if you take a look at Sidney or Canberra it might be similiar to towns like Berlin or Frankfurt in Germany. But if you go out to the country-side, I think Germany is still crowded in it's loneliest regions compaired to the little number of people living in the Australian outback.
    Hope, I explained it in an understandable way ...
    Kind regards, Bambi
  2. Simon M

    Simon M Adventurer

    Joined:
    Jan 23, 2010
    Oddometer:
    87
    Location:
    Perth, Western Australia
    Hey, welcome back everyone. It's been a bit quiet here for a while and I was starting to get withdrawal symptoms. Good to see everyone out and about again, and safe after the silly season.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p></o:p>
    <o:p> </o:p>
    I’m a bit envious of you guys out riding. The weather here isn’t conducive to going bush at the moment. This week’s forecast is, 38, 39, 40, 40, 42, 40, 37 degrees C :hair, so I’m staying inside apart from the odd splash in the pool.<o:p></o:p>
    <o:p> </o:p>
    Off to but an air conditioner now.<o:p></o:p>
    <o:p> </o:p>
    PS. I’m another tank patter.<o:p></o:p>
  3. Simosez

    Simosez Been here awhile

    Joined:
    Oct 13, 2010
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    524
    Location:
    eternally sunny lithgow
    i'm a tank slapper:rofl
  4. Ladder106

    Ladder106 It's a short cut, really

    Joined:
    Jan 31, 2005
    Oddometer:
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    Davis, CA
    Can you guys give me an idea of the fuel consumption of a well tuned SR41 (750) DR?

    I put the carbs from the SR42 on my bike (the ones with the removable pilot jets). The bike runs great after replacing all the O-rings and slide guides but is using more fuel. I used to go 400 to 420 k before using "reserve"....Now it's down to 370 k.

    Milage is 38 miles/gallon .... or .... about 16 kilometers per liter.

    With the old standard SR41 carbs I was averaging 42 to 45 miles per gallon ... or ... 18 to 19 k/l.

    In comparing the carb specs in the service manual, I noted the SR42 carbs have a richer needle jet (O-5 rather than O-4) but use the same needles.

    To compensate I moved the needle clip up one notch (to lower the needle) today. Only rode around the neighborhood since I was running out of time. The bike ran fine without any hint of lean conditions. I'll give it a better ride tomorrow. Unmodded airbox, clean standard filter, standard exhaust.

    I'd just like to know what figures are "normal" or common for the Big
  5. Resi

    Resi Been here awhile

    Joined:
    Jul 5, 2011
    Oddometer:
    211
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    Nassau Area
    Ray,

    my smurfie takes between 6.5l/100km up to 10l/km, acc. 15.4 km/l respectively 10 km/l.

    Final ratio 15/50, actually Metzeler Unicross tires, nearly offroad use only.

    Oranje one is at approx. 8 l/100km (12.5km/l).

    Final ratio 14/48, onroad use only.

    Green SR43 is at 6.5l/100km, onroad cruisin' ;)

    You have to break an egg to make an omelette. :1drink

    Cheers,

    LarS
  6. ztaj

    ztaj jatz

    Joined:
    Jul 22, 2008
    Oddometer:
    1,118
    Location:
    Nelson-ish New Zealand
    Australia....land of nothing :D

    [​IMG]

    Hello all :norton

    Ladder I was getting about 17 k/l when the Big (sr41) was running, a little less when "pressing on" :evil The best I ever did was 512k's from a tank, Mrs Z had to ride home and get some fuel in a container for me though :D
  7. Megamoto

    Megamoto Yes, I do look like this.

    Joined:
    Dec 5, 2005
    Oddometer:
    3,241
    Location:
    You know...I think I've been here before.
    Daisy gets 50 Mpg. SR43A, K&N, stock carbs, Laser Produro. (If that helps................)
  8. MCmad

    MCmad Banned

    Joined:
    Jun 29, 2008
    Oddometer:
    7,842
    For those of us less educated this makes all those numbers easier http://www.convert-me.com/en/convert/fuel

    Seems most reasonable sized road/adv bikes get between 18- 19km per litre (in my experience on the road somewhere near the speed limit) sometimes I dip into the 17s and occasionally see 20, whether that be a 750/800single or KTM, Aprilia or Harley twins, Thats about 50- 55mpg if your of British descendants :D

    Back in the 800 days :cry
    [​IMG]
  9. bluesman

    bluesman Long timer

    Joined:
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    3,438
    Location:
    Hoegaarden, Belgium
    Mine is 5.5 liter per 100 cruising at 120 kmph, 6 liter in any kind of mixed riding. 5 liter per 100 cruising non-stop of 90 kmph limit. My wife, luggage and german motorway at 130 kmph = 6 liters per 100
  10. robmoto

    robmoto Long timer

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    Feb 15, 2009
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    3,969
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    Kyle, since those pic,s I have added braceing from both sides of the rear frame the back handle bolts to a centre point at the back centre of the guard, using one of the bolts that mount the small rear tailight.
    It is now very solid and don,t vibrate at low revs.
    it is now very good.
  11. robmoto

    robmoto Long timer

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    Location:
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    800 motard with pumpers and 2 150mm long foam filters cruising at 100kph is spot on at 20klm,s per litre'
    Orange 750 with pumpers the side cut out of the standard air cleaner and small foam cleaner added to the top of the air box fully loaded with all the camping gear etc on hwy sitting at 4500rpm with no headwind only once was 22.1klm,s per litre.
    Blue 750 with standard air box and using the air filter cage with no paper but foam filter insert 16.6klm,s per litre and making the motor work.
    Yellow 750 with no air box and foam twin air , air filter with 14/50 teeth gearing flogging the guts out of it on off full throttle stuff in the scrub and some road work sitting on 5000 rpm at a guess 12 to 14 I think. :lol3 but don,t know exactly who cares when your having fun :lol3.
  12. bluesman

    bluesman Long timer

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    Damn. So you made me think about TM pumpers again. Damn.
  13. robmoto

    robmoto Long timer

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  14. the_sad_punk

    the_sad_punk Been here awhile

    Joined:
    Feb 25, 2010
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    Location:
    Eire
    Just thought id share my finding after having fitted a 12.7mm bore master cylinder to my HE 4 pot caliper.
    Previously had a 15.8mm bandit mc on which was not a good match to this caliper, no travel and no power.

    [​IMG]

    [​IMG]
    Its off a new ninja 250.

    Perfect for on road action, lovely and progressive building strongly with enough feel to stop on a sixpence! Acceptable on gravel as the initial bite isint too harsh at all but obviously not for anyone doing anything approaching serious offroading.
    I even did a wee little rolling stoppie (in the wet!) thanks to anakee2 grip:eek1 As good as id want in brakes on any bike and mucho recommended for the tarmac fellas out there.
  15. Ladder106

    Ladder106 It's a short cut, really

    Joined:
    Jan 31, 2005
    Oddometer:
    5,393
    Location:
    Davis, CA
    Thanks for the conversion page.

    Thanks to all for their responses. It gives me an idea of what's "normal"

    I knew there would be a "range". My point was that with the carb rebuilds, I was looking for improved efficiency. Having it get worse told me something had changed. I know I altered it from stock. Hopefully dropping the needles a bit will help. I'll run a tank or two through it and see what happens

    I'd like to see 19 to 20 km/litre but am not going to sacrifice engine safety or performance to get there. 400 to 420 km before hitting "reserve" works very nicely for my normal day rides and I'd like to get that back.
  16. Bambi

    Bambi Been here awhile

    Joined:
    May 14, 2009
    Oddometer:
    746
    Location:
    Linz upon Rhine, Germany
    Hello sad punk,
    is that brake-lever width-adjustable?
    Thanks-a-lot for sharing!
    Kind regards, Bambi
  17. ausibatla

    ausibatla Been here awhile

    Joined:
    Mar 6, 2009
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    458
    Location:
    Waroona, West. Australia
    I finally put the new decals I had made up on my helmet. Thought some of you might like to see them. Especially the Aussie Big decal. Might be of interest to the aussies.
    Sorry they're so big.


    [​IMG]


    [​IMG]


    [​IMG]


    [​IMG]


    [​IMG]


    [​IMG]


    Cheers.
    :clap:clap:clap
  18. robmoto

    robmoto Long timer

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    Ray SR/42 in the manual say they run 117.5 mains , standard mains for SR/41 750 are 120 just thought I would remention this if you are going back to 750 needle jets.
    Allso that methonol fuel which is coming here in july my state NSW gives poorer econimy, I use 98 0ctane and that will be available as allways , they are doing away with 91 octane unleaded.
  19. Ladder106

    Ladder106 It's a short cut, really

    Joined:
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    Davis, CA
    Rob,

    I left the mains alone thinking that if the 800 runs OK with slightly smaller mains and slightly richer needle jets, then the 750 would be OK with those numbers also.

    Maybe I'm wrong.

    Had the bike out for a 20 mile run yesterday and the fueling is just fine.

    All I did was drop the needles one notch. I'll run a few tankfuls through the bike and recalc the mileage again. The needles do show a bit of "shiny" wear (no notches or anything) so they may be worn to a bit richer state than standard. The needles and needle jets are the two parts that I did NOT replace on my carb rebuild. Right now, I'm thinking I could even go a touch leaner on the needles......we'll see.
  20. Ladder106

    Ladder106 It's a short cut, really

    Joined:
    Jan 31, 2005
    Oddometer:
    5,393
    Location:
    Davis, CA
    So I'm changing the oil on the 750 this afternoon.

    Open the oil filter case, remove filter and out falls this.

    It's silver and magnetic so steel something. It's thin and quite hard...cant bend it with fingers or tweezers...haven't tried pliers.

    Photos taken with a 6mm alllen screw for reference.

    [​IMG]

    [​IMG]

    [​IMG]

    Should I stop riding? My inclination is to keep going. I wish I could identify the bit but can not. A Bit of hard facing from a gear in the gearbox? A bit of bearing ball retainer (God I hope not).

    No other debris found in the oil that was drained. Nothing in the oil drain pan. Nothing in the screen under the cover on the bottom of the engine.

    Any and all advice gratefully accepted and considered.

    Sorry to be to needy lately. The States is a lonely place for a Big.