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Thread: GPR250 (project)

  1. #46
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    Nice one mate. you finished it yet?

  2. #47
    apriliaforum Junkie -CON-'s Avatar
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    I did and was riding it but something happened to the spark, there is no spark, so the bike seating in the garage for now, trying to figure out what to do with it. No one have a flywheel extractor tool Ducati style in here, if I order one from UK it'll be here next year, so I'm stuck for now.

    I was gonna post a video doing a power wheelies in 2nd sometimes in 3rd gear on youtube but was waiting because I was still tuning the carburetor.

    The fastest I went was 120 km/h, it got there fast I don't wanna push it, a lot off people say the bike not made for that kind of speed/power. It's got short gearing, planing to get some different sprockets to widen it up a bit. But yeah the bike was riding nice but was vibrating a little bit when down shifted but overall was OK till this spark disappeared. I am thinking to convert it to fuel injection rather than buying a new ignition system from UK, this is the only place I can get it from, and I hate screwing with the carb. Every time I had to change the settings I had to take the gas tank off and than the carb out and apart, fuel all over the place, disgusting! And with management I can just adopt any available ignition so anyway that's why I rather have the EFI

  3. #48
    apriliaforum expert DanHam's Avatar
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    nice, go for the fuel injection
    2004 Aprilia RS50 - Sold
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    1992 Honda VFR 400 R Sold
    2004 Ford Focus TDCI Sport Sold
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  4. #49
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    I would love to see fuel injection on that motor!

    Maybe you could use a single TB from a 600cc or 750 with a powercommander and of course Fuel pump...

    They do make Dirt bikes now with Fuel injection so I would be curious to see what kind of setup they use and maybe you could rob parts here and there.

    But plan on spending some loot cakes!


  5. #50
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    Well I'm planing to get MegaSquirt full DIY system, that should do.

    http://www.diyautotune.com/catalog/m...bled-p-28.html

  6. #51
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    OK here is the video of my bike it's a bit shity but it's all I got for now. And the bike is not fine tuned yet still too lean high rpm and too reach on low. I dont know if you will notice at the end of the video there is a man running after me, so I had to get a hell out of there !

    Anyway hope you like it , and dont forget to rate it !

    http://www.youtube.com/watch?v=nSue87IhF3s

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  7. #52
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    nice mate

  8. #53
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    Quote Originally Posted by -CON- View Post
    OK here is the video of my bike it's a bit shity but it's all I got for now. And the bike is not fine tuned yet still too lean and too reach on low. I dont know if you will notice at the end of the video there is a man running after me, so I had to get a hell out of there !

    Anyway hope you like it , and dont forget to rate it !

    http://www.youtube.com/watch?v=nSue87IhF3s

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  9. #54
    apriliaforum expert DanHam's Avatar
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    lookin' good
    2004 Aprilia RS50 - Sold
    2006 Honda CBR125 - Sold
    2000 Ford Fiesta Zetec S Sold
    1992 Honda VFR 400 R Sold
    2004 Ford Focus TDCI Sport Sold
    2001 Ford Fiesta Zetec S 1.7 Sold

    Current
    2003 Suzuki GSX R 600
    2005 Skoda Fabia VRS

  10. #55
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    Quote Originally Posted by -CON- View Post
    OK here is the video of my bike it's a bit shity but it's all I got for now. And the bike is not fine tuned yet still too lean high rpm and too reach on low. I dont know if you will notice at the end of the video there is a man running after me, so I had to get a hell out of there !

    Anyway hope you like it , and dont forget to rate it !

    http://www.youtube.com/watch?v=nSue87IhF3s

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    Impresive!

  11. #56
    apriliaforum expert DanHam's Avatar
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    haha your mate took some convincing to get his ass out of there from that bloke
    2004 Aprilia RS50 - Sold
    2006 Honda CBR125 - Sold
    2000 Ford Fiesta Zetec S Sold
    1992 Honda VFR 400 R Sold
    2004 Ford Focus TDCI Sport Sold
    2001 Ford Fiesta Zetec S 1.7 Sold

    Current
    2003 Suzuki GSX R 600
    2005 Skoda Fabia VRS

  12. #57
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    Yeah he didn't see the guy behind the tree!

    Thanks guys glad you like the bike! But now I'm thinking I should of just went with yz125 it would be just as fast I think .

  13. #58
    apriliaforum expert DanHam's Avatar
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    conversion number 2 coming then?
    2004 Aprilia RS50 - Sold
    2006 Honda CBR125 - Sold
    2000 Ford Fiesta Zetec S Sold
    1992 Honda VFR 400 R Sold
    2004 Ford Focus TDCI Sport Sold
    2001 Ford Fiesta Zetec S 1.7 Sold

    Current
    2003 Suzuki GSX R 600
    2005 Skoda Fabia VRS

  14. #59
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    Tell you what, straight swap? your bike for mine then you can do the conversion on mine

  15. #60
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    No I was just saying that it would of be good enough to have 125cc racing engine, YZ, RM, KX or CR. But I like the way it is a lot stronger probably, besides I think optimum piston size for petrol is 300cc that's what F1 uses, some one on here said it was 125cc well I think that's BS.

    Maybe I will start something different in the future, I'll probably sell this setup as a kit for Derbi or new Aprilia everything it will need to be just bolt it on. But for now I'll be just enjoing as it is. I still wanna play with the sprockets, I gotta reach 120 miles/h on it, the gears are so short on it.

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