Solid gear change

  • goobs
    goobs
    13 years ago

    G day Gents

    My recently aquired 98/99 Fatboy is a joy to ride, especially wth the advise from some of you blokes on this forum. Changing gear is not a problem except that it changes with a really solid clunk? Is that standard? Its up and down the gears. If Im going real slow and changing down, nice and smooth?

     

    Cheers

    Goobs

  • wayne.craft
    wayne.craft
    13 years ago
    Hey Goobs try changing your Primary and Gearbox oil,
    using a heavy grade Mineral oil and see what happens
    before you panic and start looking for a problem......
  • HogBag
    HogBag
    13 years ago
    I would also check the clutch adjustment, oil the cable and grease the pivot on the lever.
  • goobs
    goobs
    13 years ago

    Gday Wayne

    Do you reckon amsoil severe gear is ok?

  • wayne.craft
    wayne.craft
    13 years ago
    Look Goobs I dont get into the BRAND NAME too much,
    all oil comes from the gound... Unless its Full Synthetic.....
    Oil is manufactured the same way at every company its
    only the additives that change.
    Any 80 - 140 weight gear oil will be fine for the box,(I use Penrite 85-140 Hypoid Gear Oil)
    Take your pick for the Engine, ( Im run Mobil1 V Twin )
    AND spend some time researching with your Primary oil
    I use Valvoline Trans Fluid (Type F ?) with NO ADDITIVES
    you dont want the slippery stuff in there with your clutch......




  • goobs
    goobs
    13 years ago

    Cheers Wayne

    ILL Let you no how I get on

    Goobs

  • wayne.craft
    wayne.craft
    13 years ago

    You can Sparra, but MY PERSONAL OPINION
    is that it is too Slippery for Trans Gears and Primary...
     

    Im just about to do a full test on the new Bel Ray Syn oil, in Engine,

    and Mineral in Gearbox & Primary... See how it performs havent used it for years...

  • rider
    rider
    13 years ago

     

    goobs, Harley's gear boxes have always been just that, a Gear Box.

    Not until recently have they developed to the stage that they can be called transmissions, and even now they are not that much more refined than an old fashioned tractor gear box.

    Hey, but that's part of the attraction!

    They still got that good old fashioned crash box feel and sound to them.

    It is nice that they caught up with modern engineering technology and experience, and finally changed some of those straight cut gears out for helical cut gears to improve gear contact surface area and gear whine noise.

    Made em stronger and quieter.

     

    Can you imagine the challenges that Robert Louis Stevenson and Rudolf Diesel had when trying to make that gooy stuff that came from underground in layers of rotten, decaying dinosours and vegetation into a suitable lubricant for their,(at the time) breaking edge engineering technology?

    Straight crude oil.   Something more was required.

    As Wayne says, 

    "Oil is manufactured the same way at every company its 
    only the additives that change. "

    Basically, refined oil nowadays is only a carrier for the appropriate additives that are blended to do the job.

    (need to change the oil ?,,, because it becomes contaminated with foriegn objects and the properties of the additives are spent)

    (at this stage, going into the politics and why oil companies don't want to supply the ultimate lubricant that would last forever and not need to be replaced is not appropriate, never the less as interesting as any other industry that has the desire to continue along for as long as it can in a profitable manor)

    Anyways, Harleys gear Box is no state of the art transmission, so it needs all the help it can get lubrication wise.

    Whatever "GEAR OIL" you choose for your gear box, make sure it is the best you can buy and suits the application.

    After you're happy with that, I suggest that you try improving the qualities of that oil by increasing it's properties by increasing the "additive" content with something that will acheive what you want.

    Up to you what you research, but for a tip, after quite some years and experience with this exact issue, I add 70 ml of Nulon G70 to my Harley gear box, and as several other owners that I know have done, experience quieter operation and much smoother and quieter shifting.

    Worth it? if you give it a go I'd be surprised if you don't notice an appreciable difference.

     

  • wayne.craft
    wayne.craft
    13 years ago
    My mate runs Nulon oils in his Ironhead and no problems,
    MARKETING, Big Shiny Bottles with Stickers worth more than the oil inside DOES NOT make a good oil ......
  • goobs
    goobs
    13 years ago

    Fuck me after all this info I might try a couple of banana peels and a jar of peanut butter. Thanks for your info Rider, appreciate it.

    Cheers

    Goobs

  • goobs
    goobs
    13 years ago

    Thanks for all the info guys. I might try some banana peals and a jar of peanut butter

    Cheers

    Goobs