DR750 & DR800 owners thread

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

  1. Dino3310

    Dino3310 Been here awhile

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  2. bluesman

    bluesman Long timer

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    Happy Birthday Lars! :) From Belgium! :)
  3. Ladder106

    Ladder106 It's a short cut, really

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    Yep, at least it is "some sort" of a conclusion.

    I think I can find a 14T CS sprocket from an early Dr650 over here that will let me see what happens with the more "correct" gearing.

    For now, it's very rideable and I quite like the "overdrive" It gives the bike a very different feel from the 750 engine but will still wheelie off the throttle in 1st gear.

    Rob, I like you idea of punching holes next to the snorkle and will try this on an older air filter I have. It may just be the best of both worlds approach.

    Thanks for all you comments (including livestock references that have now been added to my vocabulary).
  4. robmoto

    robmoto Long timer

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    You have a way with words / livestock refrences :D.
    Hey do you know what fig jam is :ear.
    One tooth on the counter shaft sprocket on me motard made a difference of 6kph.
  5. Resi

    Resi Been here awhile

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    Mate, I've got some spare 520 / 14 teeth sprockets with matching chain guide.

    Cheers,
    Lars
  6. Ladder106

    Ladder106 It's a short cut, really

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    NO.....but the real question is.....Do I want to ask?



    Lars,I'm impressed, you seem to have almost everything for these bikes.

    Not bad.....for an OLD guy

    Yes, please put me down for one. I plan on asking you for a few items in the near future but if you could put my name on one 14T CS sprocket before everyone wants one, that would be great.
  7. Ladder106

    Ladder106 It's a short cut, really

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    I sat down yesterday and calculated out the total final ratios for all our bigs.

    It's rather interesting:

    For SR4142 with Standard 48/15 final drive:

    1.937:1 (primary) x .80:1 (5th gear) x 3.2:1 final (48/15) = 4.958 : 1

    For SR41/42 with altered 47/15 final drive

    1.937 x .80 x 3.133 = 4.854 :1

    For SR43 with Standard 47/15 final drive:

    1.848 x .80 x 3.133 = 4.631 :1
  8. Bambi

    Bambi Been here awhile

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    Hello there,
    @ Mark 618: Afaik the tank on Nave's bike is for a DR 650 and it's been made by Acerbis. Stefan Hessler said, some time ago, that he convinced Acerbis to make a new batch of 20 or so. So he still might have one or more in his shop. Just did a little search there, here you are: http://www.dr-big-shop.de/650_TankPlastic.html
    Ok, I don't know if you're looking for a cheaper, used one. But so at least you know what you're looking for ...
    Kind regards, Bambi
  9. robmoto

    robmoto Long timer

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    Ray , Frigg I,m Good Just Ask Me .
    the first word can be changed if you want :lol3.
  10. mark618

    mark618 n00b

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    Bambi, thanks for your help and going that bit further to have researched it for me. Much appreciated
  11. Bambi

    Bambi Been here awhile

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    Mark, you're welcome!
    Kind regards, Bambi
  12. Rik Le Ray

    Rik Le Ray VAT FREE FISHING

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    OK Guys i have the rear tanks in my van and now have had a price a set of Fiber glass tanks that can be fitted to the existing frame will be £800
    and a set of ally tanks will be £1800 this option will allow you to use them fully but will need the frame to be chopped etc which mark can give you plans for

    Remeber these copies will be taken from an original set from 1988 so they are going to be identical :clap
  13. spen

    spen on my arse

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    I"m hoping some one out there can help me :D I have started rebuilding my 750 and after removing the rocker cover i see the cam shaft is worn and so are the two rocker arms so i"m looking to buy a set of secondhand ones . Please PM if you have anything for sale .Cheers Spen :ear
  14. ausibatla

    ausibatla Been here awhile

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  15. Ladder106

    Ladder106 It's a short cut, really

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    Lars,

    Can you be a bit more specific about that additions or changes are necessary to wire the SR43 CDI into a SR41 wiring harness?

    Electronics is my weak point and I'm having trouble following the wiring diagram on you web site....cant tell what is different or what changes are necessary.
  16. EBMOTT

    EBMOTT Adventurer

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    hey ya'll i was wondering what is the frame difference between the dr650 and the dr800. seeing as how the dr800 was never imported in to the US. want to be able to bolt all the dr800 plastic on my 650. wondering if it willl work or how much fabricating i would have to do? thanx for your help
    cheers mott
  17. Simosez

    Simosez go ride your bike.

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    then you would only be an imposter!!

    honestly though, it would not be easy and you would only be adding weight that a piddly little 650 would stuggle to lug around.:lol3
  18. Ladder106

    Ladder106 It's a short cut, really

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    Possibly but things like distance between the botom of the tank and top of cylinder head might make things difficult.

    I think there is more relation between the pre-1995 DR650 and the Dr750/800 than there is for the post 96 models.


    Some welding to attach brackets tot he steering head to mount the front fairing bracket.

    Lost of little tabs and things to mount other body panels. It depends on your skills with welders and other tools


    The only way to know would be to mock up some 800 bodywork and see if anything fits.

    It's certainly not a bolt-up operation.



    I might just have the only DR800 in the USA. Right now, I'm starting to do a frame-up repaint and rebuild. The bodywork is off, engine is out, the frame is just a "roller" until I get the engine work done.

    You're welcome to come by and try duct-taping the 800 body work onto your bike if you want to spend the day taking your tank off etc.
  19. Resi

    Resi Been here awhile

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    Hi Ray.

    A mate from german BIG forum did the conversion on his SR42.
    When you look at the diagram, the greyed-out parts are supersede (decompressor relay and decomp. switch).
    The tricky part is to connect the '96 CDI to the old loom. On the scheme you can see which wire from the CDI has to be connected to the accordant wire on the loom.
    The only thing you have to rewire is above the three connectors!

    Cheers,
    Lars
  20. bluesman

    bluesman Long timer

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    It is totally and completely different. Even sheer size-wise it won't fit, it will be a bit of a small bike in oversized clothes :lol3