Faulty Throttle Position Sensor (TP) hack (GSX-R1000 K1)

Discussion in 'Australian Motorcycles' started by fred.kroft, Oct 16, 2005.

  1. fred.kroft

    fred.kroft Guest

    Hello All,

    I had a faulty TP sensor in my 2001, GSX-R1000. Here are
    some technical notes on my findings--

    http://jsno.leal.com.au/gixxer_hacks/GSXR1000K1_TP_repair.html

    The local Suzy dealer wanted $180 for a replacement, which is
    day light robbery IMO. So, I hacked my existing sensor, and
    I'm looking at designing a replacement.

    cheers
     
    fred.kroft, Oct 16, 2005
    #1
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  2. wrote in @o13g2000cwo.googlegroups.com:
    When you think about it, someone is getting rich be selling 6 dollar parts
    for $200. Someone should burst the bubble.

    pierce
     
    R. Pierce Butler, Oct 16, 2005
    #2
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  3. fred.kroft

    sharkey Guest

    That is indeed stupidly overpriced. I'd skip the cheap Dick Smith
    pot though, because it'll fail too quickly. See if you can build
    something around a cheaper auto TPS.

    -----sharks
     
    sharkey, Oct 16, 2005
    #3
  4. fred.kroft

    fred.kroft Guest

    Ahhh no, no, no, no, no ;). The dick smith quote was just to give a
    comparsion. The Farnell quote is more like it. I'll probably get a
    good quality pot from RS Components though.

    The auto TPS isn't a bad idea ;). Thanks.

    I remember in 2002 (when I first got my gixxer) somebody mentioning
    about their gixxers fuel pump failing, and that they managed to
    source a mitsubishi part (or something like that) at a cheaper price.
    So, the above is definately possible ;).

    cheers
     
    fred.kroft, Oct 16, 2005
    #4
  5. fred.kroft

    FuTAnT Guest

    Try other bike manufacturers as well ... may be cheaper??
     
    FuTAnT, Oct 16, 2005
    #5
  6. fred.kroft

    sharkey Guest

    Okay, good! Not meaning to be rude, just pointing out that it'll
    let you down sooner or later.
    No worries ... prices through Bursons, etc, aren't that bad, and they're
    available in several standard sizes and I think they're all 5K. They're
    almost all designed to fit onto a throttle butterfly and so have 90°
    range. I think there are sealed ones available.

    You'd probably just need to make an adaptor which fit the O-ring
    'nose' of the part you show in your photos.
    The Honda XLV750 fuel pump still has the Mitsubishi logo on it!
    There's often automotive equivalents to motorcycle parts, it's
    worth checking out.

    -----sharks
     
    sharkey, Oct 16, 2005
    #6
  7. fred.kroft

    alx Guest

    Not quite as clearcut but the truth lies somewhere between, given that none
    of the offtheshelf products are sealed units etc etc.

    Numerous other reasons including design investment, inventory control, etc
    etc... I'd give a DSE pot dibs on failing first in the field. Not up to
    vibration, heat, humidity as the stock unit.




    I choose Polesoft Lockspam to fight spam, and you?
    http://www.polesoft.com/refer.html
     
    alx, Oct 17, 2005
    #7
  8. fred.kroft

    GB Guest

    How about a decent wire-wound pot. Can you still get them at DSE/Jaycar/
    Farnell/David Reid et al?

    GB
     
    GB, Oct 17, 2005
    #8
  9. I can buy milspec pots suitable for use in hostile environments for a few
    dollars. Hermetically sealed, able to withstand several Gs of force, etc.
    I say he can't possibly do any worse that the OEM pot.

    This isn't rocket science.

    pierce
     
    R. Pierce Butler, Oct 17, 2005
    #9
  10. Wire wound doesn't have the resolution needed.


    pierce
     
    R. Pierce Butler, Oct 17, 2005
    #10
  11. fred.kroft

    fred.kroft Guest

    Hi alx ;)

    I agree with Pierce. Suzy's 5k pot was nothing special.

    Me personally, I would not use a pot in this application
    (for the reasons you mentioned). I would use some sort
    of reactive transducer that has no frictional parts.

    ....but there again, bike bits are ment to wear out.
    There is always a performance versus cost tradeoff.
     
    fred.kroft, Oct 17, 2005
    #11
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