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Thread: The DR650 thread

  1. #706
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    2nd March 2004 - 13:00
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    Quote Originally Posted by pete376403 View Post
    Why? The GSXR600 pulls to maybe 15000rpm, so it's logical to assume the muffler can flow enough air to allow this - 0.6 x 15000 = 9000 litres/min give or take. The DR is fractionally bigger at .65 litres, but the revs are way down, maybe 7500 so the DR only requires 4875 (call it 5000) litres/min flow.
    But the DR flows in 650 cc pulses not 175cc pulses.

    The 01-02 1000 cans are best but the 600 can works ok.

    The newer cans are quite a bit longer.

  2. #707
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    3rd February 2004 - 08:11
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    Yeahbut, at any sort of revs the 600 would be ridden at, there would be no discernable pulse in the exhaust stream, it would be to all intents a continuous flow (and quite a bit of it), unlike the chuf chut chuf of the dr.
    I've done this with my GS1100 (Suzuki not BMW) put a CBR600 muffler on it -it's worked just fine, even up to red line (which is a fast idle for the CBR)
    it's not a bad thing till you throw a KLR into the mix.
    those cheap ass bitches can do anything with ductape.
    (PostalDave on ADVrider)

  3. #708
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    Quote Originally Posted by pete376403 View Post
    Yeahbut, at any sort of revs the 600 would be ridden at, there would be no discernable pulse in the exhaust stream, it would be to all intents a continuous flow (and quite a bit of it), unlike the chuf chut chuf of the dr.
    I've done this with my GS1100 (Suzuki not BMW) put a CBR600 muffler on it -it's worked just fine, even up to red line (which is a fast idle for the CBR)
    Exactly. The GSXR pulses are smaller and smoother. The DR pulses are once every 4 stroke cycle. Far more effective back-pressure.

    The GSXR600 pipe flows like my SuperTrapp IDS with 8 discs. The 1000 pipe flows the same as 10 discs. Thats about a 500rpm shift in "sweet spot" for revs.

    The 600 is fine. The 1000 is finer and also lighter (stainless internals vs titanium).

    The 600 can is down about 8% power on the 1000 too - I dropped 2hp changing to the 600 from a 10 disc SuperTrapp.

    I liked my 600 can and if the mid pipe didn't have any holes in it, it'd still be on the bike.

  4. #709
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    4th August 2006 - 12:37
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    Jeez, I am glad I don't know a fraction of what you guys know about bikes. If I did, I reckon I would never be happy with my ride!

  5. #710
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    Quote Originally Posted by Woodman View Post
    which meeting?? .
    Rabbit Island Beach races, 3rd Jan 2011.

    Be there, or be a blouse wearing purse carrying pee-squatting nancy boy.
    Cheers,
    Colin

    Quote Originally Posted by Steve McQueen
    All racers I know aren't in it for the money. They race because it's something inside of them... They're not courting death. They're courting being alive.

  6. #711
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    Quote Originally Posted by warewolf View Post
    Rabbit Island Beach races, 3rd Jan 2011.

    Be there, or be a blouse wearing purse carrying pee-squatting nancy boy.
    Rright your on..... And I'm gonna put a cross of masking tape on my headlight to show that I really mean business.
    I mentioned vegetables once, but I think I got away with it...........

  7. #712
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    Quote Originally Posted by wysper View Post
    Jeez, I am glad I don't know a fraction of what you guys know about bikes. If I did, I reckon I would never be happy with my ride!
    you just rape it till you need more of something

  8. #713
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    Quote Originally Posted by carver View Post
    you just rape it till you need more of something
    today I took the DR around a 'MX' track
    the front forks dont handle the jumps, and the rear light is starting to fall apart

  9. #714
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    I highly recommend not to go two up on a dr650............your butt will love you for it.......

    not much room at all...passenger pegs are way to high....very uncomfortable....
    lucky we only had about 160 odd kms to go....

    JMJ
    I FEEL THE NEED, THE NEED FOR SPEED
    my ride picshttp://picasaweb.google.com/sueycarter
    other ride pics http://picasaweb.google.com/113645336286831595353

  10. #715
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    Quote Originally Posted by carver View Post
    today I took the DR around a 'MX' track
    the front forks dont handle the jumps, and the rear light is starting to fall apart
    i use to take my old one out to Patetonga, fucken loved it

    shocks didnt like it much but it was like an armchair over the rutts and stutters
    'Good things come to those who wait'
    Bollocks, get of your arse and go get it

  11. #716
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    Quote Originally Posted by dino3310 View Post
    i use to take my old one out to Patetonga, fucken loved it

    shocks didnt like it much but it was like an armchair over the rutts and stutters
    fuck yeah, but ya cant push em very hard

  12. #717
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    Quote Originally Posted by carver View Post
    fuck yeah, but ya cant push em very hard
    No matter what you do to the suspension the bike still weighs a fair bit.

  13. #718
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    Quote Originally Posted by NordieBoy View Post
    No matter what you do to the suspension the bike still weighs a fair bit.
    The germans could push those old BMW's pretty hard in the early 1940s, and they were a tank

  14. #719
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    Quote Originally Posted by junkmanjoe View Post
    I highly recommend not to go two up on a dr650............your butt will love you for it.......
    not much room at all...passenger pegs are way to high....very uncomfortable....
    lucky we only had about 160 odd kms to go....

    JMJ
    lucky ya mate had a DR and not a XR mate
    'Good things come to those who wait'
    Bollocks, get of your arse and go get it

  15. #720
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    Quote Originally Posted by carver View Post
    The germans could push those old BMW's pretty hard in the early 1940s, and they were a tank
    So were the riders. At the ISDE they were all over 6'4"

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