Project My Fizzer

Discussion in 'Your 250cc Projects' started by GreyImport, Sep 24, 2012.

  1. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Any more major bike builds wont happen till my workshop is built ... doing the ZXR reminded me of how crap it is here now working 'outside' etc

    Things like the carbs and wheels will probably end up on the flyer and its now out of rego anyway ... its had its day
    The engine needs a total rebuild and third gear is stuffed also but for the time being running down the track will do while its still in 1 piece
     
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  2. Frankster

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

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    My contribution to the FZR drag bike...

    A hi-flo air filter

    FZR Drag Bike.JPG
     
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  3. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    d 1.png d2.png
     
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  4. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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  5. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Pulled the old tart out for some Jenny Craig and a few renovations and retire some no longer required bits :cool:

    fzr drag.png
     
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  6. Frankster

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

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    Need to find a way to spray engine start into it without having to take all the bits off. If I remember right, it was hard to start, but ran fine once hot. Started fine when cold with a bump start (from memory)...right?
     
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  7. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Thats about it ...... I started it today with Aerostart but it took alot ..... didnt try to bump it as I wasnt going to try pushing it up the hill..... bumping worked easily that first time at Gunnedah when cold and then started via the starter all weekend.
    When racing is looming again Ill try that here in the street (when theres 2 of us) to see if its a common occurence

    Plan is to change a few things then just drag it till the gearbox and/or engine self destructs


    house bike.png
     
    Last edited: Apr 28, 2020
  8. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Perfect fit ... easy access to the airbox for a squrt if Plan B is required :D

    tank 1.png tank 2.png tank 3.png
     
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  9. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Might I suggest that your pilot jets are blocked? :lolsign:
     
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  10. Frankster

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

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    When do you plan to make a tank skin to go over that? Maybe some kind of hinged unit for easy open and close to get to carbs?

    Should save about 4-5KG ditching the metal tank.
     
  11. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Come on mate ... its not a show and shine .... practicality and speed is the objective :crazypilot:
     
  12. Frankster

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

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  13. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    2KR tank cover?
     
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  14. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Pulled some more extraneous bits today

    Chinese fuel pump had died ..... might not have helped trying to run the bike the other day ... put the original back in

    Ditched the coils as I have these sticks on the way

    coils.png COPS.png

    Ok electrical honkys .... would Jaycar have these maybe? .... or just the bare terminals to rewire them?

    coil plugs.png

    I had a good look at the diaphragm vents also .... I dont know about there being 'filter' material in there but they sure were clogged up with junk ... might not help in the act of carburetion either

    filters 1.png

    before

    filters 2.png

    after the air gun


    filters 3.png


    Also time for some gearing experiments for the ⅛ mile

    Its had stock gearing for years so a 17 front but lets lose some teeth and get the most out of that 18500rpm :D

    13 or 15 ? hmmm :cool:

    front sprocket.png
     
    Last edited: May 8, 2020
  15. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

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    Go with 15 to start with... 13 might cause you to see the sky at take-off... and Wheelies are slow.
     
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  16. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    What is your average speed over the finish line atm ?
    And in what gear ?

    I would gear it down so you are crossing the finish line around 14,000 rpm's ( a touch below peak horsepower)
     
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  17. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Just looking at the Gearing Commander site and @ 118kmph you would be going over the line at about 15000 rpm's in 3rd gear
    With a 15T front sprocket you would be crossing the finish line @ 14550 rpm's in 4th
    And with a 13T you'd be crossing the line @ 14600 in 5th gear

    https://www.gearingcommander.com/
     
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  18. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    I would have to find my time sheets but heres a speed from one of Franks posts

    10.20 @ 110

    I think 3rd gear ...... I was hitting the limiter really easily so gear changing needs some experimenting and more test runs

    Hitting the line in 4th with some clutchless shifting would be interesting
     
  19. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

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    Nec minute... @GreyImport googles FZR250 3LN quick shifters
     
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  20. Murdo

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

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    I went from 17 down to 15 for the CBR. This gets me across the line in 4th gear around 16,000 rpm.
     
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    Last edited: May 9, 2020

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