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Drag Racing CBR250R Dragster

Discussion in 'Motorcycle Racing and Track Days' started by Frankster, Mar 18, 2017.

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  1. Cindy Mendoza

    Cindy Mendoza Member

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    Also, about the junior bike.
    The rider, Jackson, used to race against the junior dragsters, however they'd still count him as a junior bike so he'd win the prizes for junior bike if you get my jist
    At summer nationals in Taupo, heaps of junior dragster parents complained about having Jackson against the dragsters, because if they collided Jackson would get seriously hurt and the parents of the dragsters could be liable, and also there was a rule change in 2013 saying jdb couldn't go against jds. So currently, Jackson has to run exhibition passes


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    Cindy Mendoza, Mar 22, 2017
    #21
  2. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    That's sad for Jackson, but I can understand parents being concerned that their kid might run into him and hurt him. Cool bike. Hopefully, a few more will come along and he can race for real! Do you know anything about the Funny Car Junior Dragster?
     
    Frankster, Mar 22, 2017
    #22
  3. Cindy Mendoza

    Cindy Mendoza Member

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    The driver is Dylan, he's 10 or 11 I'm pretty sure, I think it has has a 125 cc motor I'm not certain though. It's the only junior Funny car in NZ. the Hartley family got it imported from the us for their son Nathan, but then when Nathan got to old for it they sold it to Dylan


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    Cindy Mendoza, Mar 22, 2017
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  4. risky

    risky risky

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    welcome. takes me back to the late 60,s when i crewed on a fed red holden engined dragster called wee beastie. ex parammatta spares. took out middle eliminator at surfers paradise nationals on [i think] a 10.42 quarter.had previously run a 9.99 at calder. my how time flies.
     
    risky, Mar 22, 2017
    #24
  5. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Welcome. Love your car.
    Great to see some thought being put into different style of JDs.
     
    Murdo, Mar 22, 2017
    #25
  6. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    Thanks for that info Cindy. We'll be keeping an eye on your progress with your FED JD. As you can tell, there are a few people on here who really like what you and your dad have done. Stay safe. Frank
     
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    Frankster, Mar 23, 2017
    #26
  7. Gen

    Gen Well-Known Member

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    I can't help but wonder what a slipper clutch & paddle shifter could to for your times Cindy ?
    I just LOVE your car,,,,,,
     
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    Gen, Mar 23, 2017
    #27
  8. Cindy Mendoza

    Cindy Mendoza Member

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    Like in the first post, dad hasn't done anything to the motor, so it would probably bring it down even lower, seeing as I got it to a 9 without any tuning or extra bits and pieces


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    Cindy Mendoza, Mar 23, 2017
    #28
  9. Cindy Mendoza

    Cindy Mendoza Member

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    2e0e8335c586b85863cfbf377bdb5eeb.jpg

    Dad changed the gear ratio for the last meet of the season, which was tara challenge at the start of April. The ratio upped my MPH by 5, so my PB MPH is now 67.3! I ran a new pb overall of a 9.5 the new ratio has given my dragster more power, however it's taken away my wheel stands it's also made the gears too hard to change, so dad might chuck in a chip to make my engine cut so my gears will change easier. However I have a choice to go back to my consistent 10.1 (9.7) gear ratio, and I will get my wheelstands back, and I won't need to worry about getting used to a new ratio


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    Cindy Mendoza, May 3, 2017
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  10. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Good work Cindy. :thumb_ups:
    Has your mechanic/pit crew/dad rebuilt the carbs and got it running on all cylinders yet?
     
    Murdo, May 3, 2017
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  11. Cindy Mendoza

    Cindy Mendoza Member

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    Nah not yet, and dad is referred too as my pit bitch


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    Cindy Mendoza, May 3, 2017
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  12. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Ouch, bit harsh. :p
     
    Murdo, May 3, 2017
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  13. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Love the 'eyes' ! :Drool:
     
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    GreyImport, May 3, 2017
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  14. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    Good work on the PB Cindy. I'm interested to see what you and your Dad do next. As @Murdo said, getting the carbs right will give you some more power.
     
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    Frankster, May 3, 2017
    #34
  15. Cindy Mendoza

    Cindy Mendoza Member

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    I also forgot to mention, I learnt how to do a skid as well! I was racing against my brother, and I did a pretty powerful one. I then went up to stage, and he hates staging first, so there was no way I was staging first so then we finally both staged after a minute, the light went green and as soon as i left the line i ripped my sprocket! I was trying to change gears to get anywhere but it wasn't working I shut off the engine and I got pushed back, dad checked it out and the sprocket was completely ripped


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    Cindy Mendoza, May 4, 2017
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  16. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    Cindy, when you say it was "ripped" do you mean stripped or did you break your chain? Odd thing to happen, but I'm not sure how heavy JD's are, so interesting. Picture of the sprocket?
     
    Frankster, May 6, 2017
    #36
  17. Cindy Mendoza

    Cindy Mendoza Member

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    I mean ripped, it's ripped out of place and it's sticking out, I'm 80% sure the chains fine but the sprocket is definitely broken. Dads gonna make a stronger one for next season


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    Cindy Mendoza, May 6, 2017
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  18. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    You have a lot more rubber on the ground than what a bike does so maybe need to go up a size in chain.
     
    Murdo, May 7, 2017
    #38
  19. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    If you're using a 428 size/pitch chain and sprocket, consider going up as murdo said. 520 kits are plentiful and by far the most common size for sportsbikes.
     
    Linkin, May 7, 2017
    #39
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