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  1. #1
    Moderator 21XDC's Avatar
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    250 OX66 flywheel vs: 250-300 HPDI flywheel

    I was told these have the same flywheels. I bought a said 300 hpdi model and it is 1/4 inch bigger in diameter and will not fit. Was I mislead? They look the same, until you put a tape on them or try and install it.

    Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html

  2. Member
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    #2

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (21XDC)

    Yeah sorry Mike. The HPDI flywheel is bigger. Whoever told you probably just didn't know.

  3. Moderator 21XDC's Avatar
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    #3

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (Mat_HT)

    I was mis lead again...

    Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html

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    #4

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (21XDC)

    Those HT boys will get u straight, Mike.........

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    #5

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (21XDC)

    Yeah, them HT boys might not balance their lightened flywheels, but hey, at least they know enough and are kind enough to tell you that you got the wrong one.

  6. #6

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (FishnPicker)

    What???

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    #7

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (Wayne Worthy)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Wayne Worthy &raquo;</td></tr><tr><td class="quote">What???</td></tr></table>

    X2???

  8. Michigan Bass Club Moderator CGWright's Avatar
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    #8

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (Darth VMAX)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Darth VMAX &raquo;</td></tr><tr><td class="quote">

    X2??? </td></tr></table>

    X3?? Not sure WTH that's all about, but I'll wait.



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  9. Member
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    #9

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (CGWright)

    Just a reference to a thread a couple of months ago.

    http://www.bbcboards.net/zerothread?id=583384

  10. #10

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (FishnPicker)

    can appreciate that there are some smart people in NASCAR (I'm a big fan) but..........2 stroke and race cars are a bit different. Many others, including myself have been lightening flywheels for decades (it's not a new thing). The process we use was developed on Formula One and Two engines that turn 10,000 rpms with hours of racing with no problems. I have never seen an engine not idle or have any adverse effects from a lightened flywheel. I promise you if you document the on plane time, mid-range aceleration, and top end, you will see a difference!!! In most cases the topend is not as significant as the hole shot and mid range!
    As far as balancing....we do not have a 10K balancing machine........but the process we use to machine the wheel only removes material from areas that do not effect the balance of the wheel If we did, it would shake every bolt and nut our of the engine
    Mike, sorry for your recent purchase


  11. Michigan Bass Club Moderator CGWright's Avatar
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    #11

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (Wayne Worthy)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Wayne Worthy &raquo;</td></tr><tr><td class="quote">
    As far as balancing....we do not have a 10K balancing machine........but the process we use to machine the wheel only removes material from areas that do not effect the balance of the wheel If we did, it would shake every bolt and nut our of the engine
    </td></tr></table>

    I can attest to the effectiveness, Wayne. It works perfectly on mine!




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    #12

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (CGWright)

    A 15lb reduction in rotating mass = a 45lb reduction in static mass in acceleration of a vehicle.

    That is why car racers get light weight rims, it is one easy way to increase acceleration coming off a corner!!!

    It's FIZZICKS!!!

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    #13

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (bilge rat)

    The difference is not a linear function of reduced weight, but an algorythm of the square of weights before & after weight removal. Location of the weight also matters. The further from center(axis), the slower the acceleration.

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    #14

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (John Jackson)

    Moment of inertia?

  15. Member utfisherman's Avatar
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    #15

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (John Jackson)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by John Jackson &raquo;</td></tr><tr><td class="quote">The difference is not a linear function of reduced weight, but an algorythm of the square of weights before & after weight removal. Location of the weight also matters. The further from center(axis), the slower the acceleration. </td></tr></table>

    John, you use such flowery branched language! Now Newton's laws and Einstein's formulas all make sense to me!
    Larry McClure
    Founder, Reel Men of God
    http://www.reelmenofgod.com

  16. Member
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    #16

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (utfisherman)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by utfisherman &raquo;</td></tr><tr><td class="quote">

    John, you use such flowery branched language! Now Newton's laws and Einstein's formulas all make sense to me! </td></tr></table>
    Unfortunately, I have to take issue with some of Einstein's formulas. They are not all correct.
    But his genius was his ability to create them from nothing, and be dang close.

    But to keep things in perspective, the most important thing about Flowery Branch is I'm 5 minutes from Lanier, a tremendous spotted bass fishery.

  17. Member utfisherman's Avatar
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    #17

    Re: 250 OX66 flywheel vs: 250-300 HPDI flywheel (John Jackson)

    Lanier is a great lake. I've also spent some time on Oconee. Had a hilarious night there with my wife catching big largemouth after dark under the people eating lobster on the deck at the Ritz Carlton. One guy kept getting up and looking over the rail to see what all the splashing was about. His tux and lobster bib were cute!
    Larry McClure
    Founder, Reel Men of God
    http://www.reelmenofgod.com

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