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Thread: Oil analysis - new bikes

  1. #16
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    I know a guy who does fluid analysis on the wind turbines. There's an amazing amount of science in the preventative monitoring that goes into keeping those things running. It was a very interesting conversation.

    Sent from my SM-G965F using Tapatalk

  2. #17
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    Quote Originally Posted by release_the_bees View Post
    I know a guy who does fluid analysis on the wind turbines. There's an amazing amount of science in the preventative monitoring that goes into keeping those things running. It was a very interesting conversation.

    Sent from my SM-G965F using Tapatalk
    I heard that the gusty nature of New Zealand is making so many turbines shit their gear boxes that the manufacturers have reduced the warranty time on them. Not sure how true it is, but I often see broken down ones on the palmy wind farms.

  3. #18
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    Quote Originally Posted by F5 Dave View Post
    So I was thinking about this on the way home. Let's unpack it.

    First service oil change. We're measuring the running in stage.

    Ball bearings dont run in, the are all perfectly rounded to start with. Plain bearings are held away from each other with a film of oil and never actually touch. Gears are all hardened. So, then there's the clutch. By definition it is wearing several surfaces together. Also the rings bedding into the bore.

    In the old days of iron liners that was a real thing. With plated liners that still happens, but only a tickle and of course rings are different and can be quite soft against a super hard bore but once run in ride on a film of oil.

    So, what if the Chinese bike in the test had an iron liner? Would be a lot more dirty in initial stages. And clutch material could be quite different. That's what we are left measuring. Unless we are to believe they are assembling engines next to the grinding shop, I think that proclaiming one engine is better than the other because of the running in phase oil check.
    Well that's drawing a long bow, and I call bullshit on it.
    Dunno if I would go so far as to call it bullshit but you are quite right. Lots of variables not discussed.

    I have not seen gripes about a motor that shits itself from any manufacturer for a very long time. Kinda, sort of.

    The majority of bikes in Africa, Asia, India, Middle East and all points in between are Chinese commuters. They get hammered, probably rarely serviced. If they crapped out constantly I doubt they would be so popular. Cheaper, obviously, but still transport which needs to be relied on.
    Manopausal.

  4. #19
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    Well its kinda like determining the attractiveness of 7 random females by measuring the length of their hair. I mean I do like long hair on wimmin, but. . .
    I've been told. Dreaming`s free.
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  5. #20
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    Quote Originally Posted by F5 Dave View Post
    Well its kinda like determining the attractiveness of 7 random females by measuring the length of their hair. I mean I do like long hair on wimmin, but. . .
    I like hair on wimmin, full stop.
    Manopausal.

  6. #21
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    No other criteria? Easy man to please.
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  7. #22
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    Quote Originally Posted by F5 Dave View Post
    No other criteria?
    Erm, happy with 2 strokes?
    Manopausal.

  8. #23
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    Quote Originally Posted by george formby View Post
    I like hair on wimmin, full stop.
    Bring back the wide bush!
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  9. #24
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    Quote Originally Posted by george formby View Post
    Erm, happy with 2 strokes?
    Well she better be!!
    In the white room, with black curtains, at the station

  10. #25
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    RingDingDing.

    Now we're talking
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  11. #26
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    Quote Originally Posted by sugilite View Post
    I heard that the gusty nature of New Zealand is making so many turbines shit their gear boxes that the manufacturers have reduced the warranty time on them. Not sure how true it is, but I often see broken down ones on the palmy wind farms.
    Prob same worldwide on the quiet lest the green dream be shattered. Theres numerous videos of wind farms not meeting their life expectancy...

    Was a good article somewhere awhile ago explaining the massive shear forces involved. If you make measure the moment of torque from the massive leverage of them longer blades then realise your wanting to transmit thats force at 90 deg through a gearbox.... basically currently technology cant produce an oil synthetic or otherwise that is able to fully handle that load.
    Each gearbox holds from 60 to 400L of oil depending on size...

    Anyone know how much heat you bike oil can take before it affects its quality? Hate being in traffic and seeing that temp gauge go up...

  12. #27
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    Do you have an oil temperature gauge?
    I've been told. Dreaming`s free.
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    Everybody listen, voices in my head
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  13. #28
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    Quote Originally Posted by F5 Dave View Post
    Do you have an oil temperature gauge?
    On my Jeep I do. And a transmission temperature gauge. It's fascinating to see how the coolant temperature (as shown on the dashboard for almost everything) behaves very differently to the other two temperature gauges. They are loosely aligned, but operate at different actual temperatures.

  14. #29
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    Quote Originally Posted by Jeeper View Post
    On my Jeep I do. And a transmission temperature gauge. It's fascinating to see how the coolant temperature (as shown on the dashboard for almost everything) behaves very differently to the other two temperature gauges. They are loosely aligned, but operate at different actual temperatures.
    Id hazard a guess the oil temp is more stable and lags water temp?

    Cause watching how quick water temp goes up on lots of bikes Im sure its mostly heat soak in radiator rather than actual engine being that much hotter?

  15. #30
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    Quote Originally Posted by R650R View Post
    Id hazard a guess the oil temp is more stable and lags water temp?

    Cause watching how quick water temp goes up on lots of bikes Im sure its mostly heat soak in radiator rather than actual engine being that much hotter?
    Cooling on a water/liquid cooled motorcycle on a hot day ... through the inner city streets was always a worry. The fan can only do so much with the air temp over 20 deg C. It was never good for the rider either.

    At Highway speeds it was seldom an issue.
    When life throws you a curve ... Lean into it ...

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