Low & Slow's Ninja 250 project

Discussion in 'Street and Performance Bikes' started by low&slow, Jan 1, 2012.

  1. phoebeisis

    phoebeisis Well-Known Member

    L&S Make a best guess- or best memory
    What would you get in dead stock form on a tank like the one you just got 103mpg?
    You dropped about 1000 rpms with the 15/41 new sprockets?
     
  2. alvaro84

    alvaro84 Homura-chan's selfishness

    400cc? Like one half of the new F800 engine? Maybe :D
    With instant and trip average FE feedback. I could really use that :)
     
  3. low&slow

    low&slow Well-Known Member

    Thanks ! :Banane21:

    Charlie, My baseline testing of the stock bike produced tanks from a low 0f 59 mpg to a high of 70 mpg. I thought the Ninja 250 would do better but after researching it I found the average rider gets low 50's with many in the 40's . I guess the 14K redline is just too tempting.
    So a very good stock Ninja 250 tank would about 70mPg. My aero mods raised this into the 70-80mpg range and with the addition the taller gearing got it up to the 100s. I need to back up this tankfill with some more good runs.

    I let Alan and Craig know. Alan will be changing his front end streamlining so he will be running the full Vetter package. In competition if you stand still you get left behind.
    all the best , L&S
     
  4. alvaro84

    alvaro84 Homura-chan's selfishness

    It seems the little Ninja has a good amount of headroom for taller gears - and it may be similar with our Ciliegia (both are 250 twins).

    With Teresa it's different, the speeds I prefer couldn't work with any taller ratio. On the other hand, sometimes I tried to shift into a non-existent 6th gear at 90-100km/h (56-62 mph), that "6th" could be the perfect freeway gear.
     
  5. phoebeisis

    phoebeisis Well-Known Member

    Wow-at least 50% better at "real speeds"

    I seem to remember those runs Motorcyclist or Cycle World did in the early 80's-
    they rode slowly and only one of them broke 100 mpg-and the speeds were something like 30 mph I think. Might have been a Honda 125 that got the best mpg??
    I think they only changed sprockets-no aero mods-maybe they changed jets also

    In 1980 I had a Puch moped that would get an honest 100 mpg.It weighed maybe 150 lbs and would do MAYBE 30 mph- had a .8 gallon tank-2 stroke ring dinger.Pretty sure it didn't have a separate oil tank-I had to premix it-which I didn't- just put oil in tank and let it mix itself!! Wish I still had that bike!
    Charlie
     
  6. low&slow

    low&slow Well-Known Member

    Here are some fresh pictures. I posted these in the Member Gallery .
    [​IMG]
    [​IMG]
     
  7. low&slow

    low&slow Well-Known Member

    This is very cool, thanks Sean !!!
    [​IMG]
     
  8. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Lookin' good!! :D:thumbs_up:
     
  9. herm

    herm Well-Known Member

    Does your head go under the windshield when you are riding?
     
  10. FXSTi

    FXSTi Well-Known Member

    Herm, I think that would be dangerous. He wouldn't be able to see.

    Kirk
     
  11. low&slow

    low&slow Well-Known Member

    Hi Herm, No, The windscreen is opaque , riding position is as in the pictures. The streamlining allows a comfortable , sitting up position without the need for tucking in.
    all the best, L&S
     
  12. PaleMelanesian

    PaleMelanesian Beat the System Staff Member

    Any plans to streamline your helmet?
     
  13. low&slow

    low&slow Well-Known Member

    Definitely something to work on for the future. Vetter's streamlining uses a " head socket " that smoothes the airflow around the helmet. When competing I try to use something like wearing a backpack to help plug the gap between my shoulders the front of the tailsection. Every little bit helps.
     
  14. low&slow

    low&slow Well-Known Member

    I rode the little Ninja to Carmel yesterday to visit Craig and Alan. They have finished with a fiberglass nose section for the Ninja streamliner kit and it is a work of art!
    When I arrived in Carmel, we met for lunch and it was great to see all our streamlined bikes plus Craig's 2 sons' Alcan faired bikes in the parking lot.
    I got to see the new nose, front framework , new windscreen, and the vinyl wrap that Craig is considering for future kits. We talked a lot about our favorite topic and took tons of pictures. It was a great day! The only down side was my fuel usage for the trip....74.54 mpg. I guess I enjoyed myself a bit too much. Pictures to follow.
     
  15. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Isn't it nice to be able to say you wasted fuel at > 74mpg?? :D:thumbs_up:
     
  16. low&slow

    low&slow Well-Known Member

    Good point! Singing the blues for getting 74 mpg? Turn up the violin music! :biglol:
     
  17. phoebeisis

    phoebeisis Well-Known Member

    74 mpg- pitiful!!
    Ha,ha.
    Not even 1.5 ounces per mile
     
  18. low&slow

    low&slow Well-Known Member

    Here some pictures from the Vetter visit
    [​IMG]
    the bikes: Vetter Helix, L&S NInja, Alan Smith Ninja w/ Vetter tail


    [​IMG]
    New Vetter Ninja kit nose vs Alan's Ninja

    [​IMG]
    Craig, me and Alan

    After further reflection, it appears I went off my 65 mph discipline too much on the Carmel trip and that knocked my FE down. This next tank I will try to do a better job.
     
  19. herm

    herm Well-Known Member

    do you guys use pulse and glide techniques?
     
  20. FXSTi

    FXSTi Well-Known Member

    I know that Vetter discourages P&G during his challenges. I think that he said you wouldn't do it in front of a police cruiser, so it isn't viable for his contests.

    Kirk
     

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