Help With Screeching Noise - '05 Daytona 650

Discussion in 'Technical Help' started by Lynch92, Sep 10, 2020.

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  1. Lynch92

    Lynch92 New Member

    Sep 23, 2018
    3
    3
    Norfolk, UK
    #1 Lynch92, Sep 10, 2020
    Last edited: Sep 10, 2020
    I'm hoping the following link to the video works -
    https://photos.app.goo.gl/13GpjuqFEwoTFiEYA

    So this noise presented itself a while back but much quieter and only after being ridden, not at start up. The bike has been sat for some time, and for the last 4 weeks (as I've been away) has been with my local mechanic to have other issues rectified and has been serviced and MOT'd. He has no idea what it could be and has advised me that it could take some time, be relatively costly and financially un-economical to figure out the source.

    My first thought was the fan as it sounds like something spinning, but as you can tell from the video it's coming from the rear of the engine and gets quieter as I move my phone towards the front.

    Any ideas?
    I'm not much clued up on bikes so any help would be appreciated, thanks.
     
  2. Lynch92

    Lynch92 New Member

    Sep 23, 2018
    3
    3
    Norfolk, UK
    Does anyone have any clue?

    I've been told it could be caused by the cam chain tensioner being too tight, but the noise wasn't present when I first purchased the bike, and I haven't nor has anyone else tightened the CCT while it's been in my possession.

    Searched the web high and low but cannot find anyone with a similar issue!
     
  3. stollydriver

    stollydriver Elite Member

    Apr 25, 2015
    2,034
    800
    north wales
    I had a sprag clutch on an old Daytona doing a strangely similar noise
     
  4. Lynch92

    Lynch92 New Member

    Sep 23, 2018
    3
    3
    Norfolk, UK
    Did you manage to remedy it?
     
  5. Lynch92

    Lynch92 New Member

    Sep 23, 2018
    3
    3
    Norfolk, UK
  6. Old dumb arse

    Old dumb arse Noble Member

    Mar 28, 2020
    909
    443
    KS
    I'd look into the drive chain as it slacks when off the power, and then the clutch sprag. Chain easy to check, clutch harder
     
  7. stollydriver

    stollydriver Elite Member

    Apr 25, 2015
    2,034
    800
    north wales
    I replaced the sprag assy, but as said - use the old engineer law. KISS ( Keep It Simple Stupid) you would never believe the number of machines replaced when only a fuse required.
     
    • Like Like x 1
  8. Lynch92

    Lynch92 New Member

    Sep 23, 2018
    3
    3
    Norfolk, UK
    I've had a look on a few part sites and it would seem the sprag clutch for my bike is no longer available. I've come across this post https://www.triumphrat.net/threads/02-07-s3-daytona-sprint-sprag-clutch-replacement-option.746130/ where they've recommended using an OEM Hayabusa sprag clutch assembly and swapping it over into the old Triumph housing will work. I'm not mechanically sound enough to do this myself. Any idea how much time it might take a reputable mechanic to get the job done?
     
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