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Thread: Modifying LAMS Motorcycles

  1. #16
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    Quote Originally Posted by FJRider View Post
    To confirm any gains ... put it on the dyno before and after ... doing that may confirm if the the HP claims of the manufacturer were correct or not. Often they are not.
    There is a YouTube clip where the official Trump accessory full system(Vance and Hines?) is fitted to a 900cc Triumph twin for a gain of one solitary BHP on a recently calibrated dyno. That one BHP cost about $3,000.

    BIKE magazine tested after market cans some years back, some produced less horses than the stock cans.
    There is a grey blur, and a green blur. I try to stay on the grey one. - Joey Dunlop

  2. #17
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    Quote Originally Posted by FJRider View Post
    Do the sums and figure it out yourself. ie: actual weight saved and the actual (if any) HP gained and see if it fits in the approved formula result.

    To confirm any gains ... put it on the dyno before and after ... doing that may confirm if the the HP claims of the manufacturer were correct or not. Often they are not.

    By your own words .. "more than likely" means not absolute. And to get a definite noticeable (possible) increase in power to the back wheel ... improvements to jetting are usually required to gain anything.

    Most don't bother to re-jet and and are quite happy with the new sound of the exhaust (but still claim they notice a performance gain). Usually the actual (only ??) reason they want to "Upgrade" the exhaust system is "The better sound" ...
    Are you being deliberately dense?

  3. #18
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    Quote Originally Posted by layton View Post
    Anyhow i am going to start a convo with a block of wood.



    Sent from my SM-G950F using Tapatalk

  4. #19
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    Quote Originally Posted by Mike.Gayner View Post
    Are you being deliberately dense?
    See post #16 in this thread. Perhaps it's you that needs to change their thinking.

    The listed HP on most motorcycles are true only if the tolerances on the entire engine are within design specifications ... as listed pre-production.

    With mass production ... this seldom occurs. Some are down 3-4 HP before they get out of the factory.

    If you want your motorcycle at full factory spec's and tolerances ... get it "Blueprinted" ...

    In the old days of Mini 7's race car engines ... THAT was the only (officially sanctioned) way to get the allowable maximum horsepower.
    Sweat wipes off. Road-rash doesn't.

  5. #20
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    Quote Originally Posted by layton View Post
    Anyhow i am going to start a convo with a block of wood.
    Talking to yourself again ...
    Sweat wipes off. Road-rash doesn't.

  6. #21
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    10th June 2006 - 18:35
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    Some NZ dude on ADVrider was talking about how his insurance wouldn't insure a LAMS bike if it has been 'modified'.

    'Accessories' were allowed.

    Example, a windscreen clipon can be removed without impacting the bikes overall operation - accessory
    a new seat, however, if removed would render the bike unusable - modification

    fuck knows if it's true but I guess it pays to check with insurance right?

    edit -
    https://advrider.com/f/threads/lams-...-mods.1377857/


    "For the purposes of insuring a LAMS motorcycle, a modification is deemed to be a change to any parts that were originally supplied as part of the motorcycle by the manufacturer. If you have added something to the bike that has not involved the removal or modification of a part of the original motorcycle, then we deem it an accessory and this will not stop us from offering you Full Cover."

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