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The value of a good tune up

This is a discussion on The value of a good tune up within the Technical forums, part of the Caferacer.net Forums category; I'm using a 18x130/90 Shinko tire on the rear mounted on a Henry Abel mag rim. I agree on the 125mph max speed mark......

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  1. #11
    Senior Member bmartin's Avatar
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    I'm using a 18x130/90 Shinko tire on the rear mounted on a Henry Abel mag rim. I agree on the 125mph max speed mark...
    Bob - Palmyra NY
    2 - 69 CB750, 1 Turbo
    1 - 71 CB750

  2. #12
    Senior Member mlinder's Avatar
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    quote:Originally posted by bmartin

    I'm using a 18x130/90 Shinko tire on the rear mounted on a Henry Abel mag rim. I agree on the 125mph max speed mark...
    16x46 with a 130/90 is around 135mph at 9 grand.
    http://quiterandom.hubpages.com/hub/...sic-motorcycle How to buy a used bike
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    It's like a Machiavellian 4-volume trilogy based on Hamlet senza misura with an ego-maniacal downs syndrome kid reading from a Rube Goldeberg-esque kindle.

  3. #13
    Senior Member TrialsRider's Avatar
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    are you aiming for a record?
    41 HP. Honda RS125 146.77 mph.




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  5. #14
    Senior Member bmartin's Avatar
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    135 - If that's an accurate number - Maybe that's why my glasses got ripped off my face... BTW - 18" rear wheel not 16"...

    TrialRider - Nice buggy you got there. I'm planning on running this bike and another cb750 w/turbo at Loring next Aug. Records - who knows - I'm just going to do it for the heck of it. I'm under no illusion of breaking any real records. The last record I saw for a semi-stock CB750 was 137.## mph - but that record is like 10 years old. So who really knows what a/any record might be for a 750cc CB750. May be Geeto will chime in and say what that might be.

    Bob - Palmyra NY
    2 - 69 CB750, 1 Turbo
    1 - 71 CB750

  6. #15
    Senior Member mlinder's Avatar
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    I didnt say 16" rear wheel, I said 16x46 final gearing.

    I've had a k0 at around 130, maybe a little more. Geared properly, though. About 9500rpm in 4th. I liked being able to cruise between 80 and 90mph at about 5200rpm. 90mph puts you are about 6krpm with 16x46. Find out your front sproket, please.
    http://quiterandom.hubpages.com/hub/...sic-motorcycle How to buy a used bike
    http://quiterandom.hubpages.com/hub/...the-Cafe-Racer How to build a cafe racer

    It's like a Machiavellian 4-volume trilogy based on Hamlet senza misura with an ego-maniacal downs syndrome kid reading from a Rube Goldeberg-esque kindle.

  7. #16
    Senior Member bmartin's Avatar
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    Gotcha - I'll check it out tonight and let you know. I do believe I'm seeing 90 at 6K myself - so I must have 16X46 gears but I'll double check.
    Bob - Palmyra NY
    2 - 69 CB750, 1 Turbo
    1 - 71 CB750

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