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This is a discussion on Pinheads within the Vintage Motorcycle Racing forums, part of the Caferacer.net Forums category; Originally Posted by bfd 2 pounds of weight can matter but have you ever weighed yourself before and after a dump? I have and have ...

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  1. #31
    Senior Member raven's Avatar
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    Quote Originally Posted by bfd View Post
    2 pounds of weight can matter but have you ever weighed yourself before and after a dump? I have and have never seen that much savings.
    Its demoralizing when you gain weight. Scales are assholes.
    drgonzo likes this.
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  2. #32
    Senior Member o1marc's Avatar
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    Lets talk real numbers. What does a race prepped CB125 weigh? I see numbers around 293 for a stock one, so lets say you took 50lbs off of that. We are at 243, add a lightweight rider that weighs 140lbs, no lets take an average rider that weighs 160lbs and we are at 300lbs. What kind of horsepower does a race prepped CB125 make. I see stock was around 15hp, lets say you doubled that to 30hp. You are now lugging 10lbs per horsepower. If you lose 2 lbs you have just gained .06 of a single horsepower, race winning free horsepower there, yup. There are just too many variables to say that any rider has an advantage by being 2lbs lighter. On bigger bikes the difference would probably not be measurable.
    Last edited by o1marc; 04-20-2016 at 02:32 PM.
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  3. #33
    Senior Member drgonzo's Avatar
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    Quote Originally Posted by o1marc View Post
    Lets talk real numbers. What does a race prepped CB125 weigh? I see numbers around 293 for a stock one, so lets say you took 50lbs off of that. We are at 243, add a lightweight rider that weighs 140lbs, no lets take an average rider that weighs 160lbs and we are at 300lbs. What kind of horsepower does a race prepped CB125 make. I see stock was around 15hp, lets say you doubled that to 30hp. You are now lugging 10lbs per horsepower. If you lose 2 lbs you have just gained .06 of a single horsepower, race winning free horsepower there, yup. There are just too many variables to say that any rider has an advantage by being 2lbs lighter. On bigger bikes the difference would probably not be measurable.
    243 + 160 =403. Just saying.

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  5. #34
    Senior Member o1marc's Avatar
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    Quote Originally Posted by drgonzo View Post
    243 + 160 =403. Just saying.
    That makes the issue more in my favor. Now we are talking 403lbs and 30hp is 18.76lbs/hp. Lose 2lbs and you've gained .033hp. Now tell me you're winning because of 1/3 of a horsepower, really?. And that's if you are making 30hp (I doubt it) and if you took 50lbs off the bike which I doubt, but might be possible.
    On a 100hp bike that weights 400lbs there's a bigger advantage. you're lugging 5.6lbs per HP gaining a whole 1.1HP. Is a 100hp bike being beaten by a 101hp bike.I doubt it?
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  6. #35
    Senior Member drgonzo's Avatar
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    It helps.

  7. #36
    Senior Member o1marc's Avatar
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    Quote Originally Posted by drgonzo View Post
    It helps.
    It helps to learn how to ride and not worry about the last pound that makes no difference. Sure it all helps, but you need to be more diligent to gain more than a 1 or 2lb difference, I can't call it an advantage. On my race car i used a more expensive body to start because there was a 50lb advantage. Ultimately it didn't make me lighter on the track because we had a minimum weight that I was at. The difference was I saved 50lbs off the top of the roof and was able to distribute more weight where I wanted it. With all that the other car won as often as I did and I saw no real advantage to the weight difference.
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    I carry a gun because I'm too young to die, too old to take an ass whooping, and a cop is too heavy.

  8. #37
    Senior Member TrialsRider's Avatar
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    I weigh in at 140 with full riding gear on and I'll be choosing the bike with the extra weight of a full fairing, If speed is the challenge I'm planning to carry just enough fuel to finish the race and whoop ye all

    full of sh*t or empty won't make any difference, if I have to go real bad I'll be in more of a hurry to get to the finish line.
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  9. #38
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    Sorry, Dirk.
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  10. #39
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    Five hundred pounds of lightweight gear.

    Every pound counts.

  11. #40
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    pfft.....
    latered

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