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  1. #1
    McPappy Team Driver horsedog's Avatar
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    Feb 2014
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    tour spec timing/rotor/roll out

    Prepping for crc- I only have 110' track for testing- My Putnam motor is set at 18 on the endbell, it has 12.4 12.6 12.4 on the can and 1568/1572 on the rotor. On my track I am rolling around a 4.10 most days. What changes should I be looking at for this race? same timing more gear? more timing? less rotor/more timing?

    thanks

  2. #2
    McPappy Team Driver Dom Ruggiere's Avatar
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    Feb 2014
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    depending if the track gains bite... id roll it out 4.40 - 4.50... timing depends on grip...
    Dominic Ruggiere
    McPappy Racing

  3. #3
    what exactly does that mean? timing depends on grip?

  4. #4
    McPappy Team Driver Dom Ruggiere's Avatar
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    Feb 2014
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    high bite tracks can handle more timing

    low bite track less timing
    Dominic Ruggiere
    McPappy Racing

  5. #5
    McPappy Team Driver
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    Apr 2014
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    If the track is 120' straight is there any calculation to figure rollout? Or get close? Or any ft' straightaway for that matter?

  6. #6
    Administrator James35's Avatar
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    Feb 2014
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    116
    The rollout mentioned above is probably going to be about right for you. You might be even higher than 4.50 since your track is slightly bigger. General rules of thumbs: More motor windings = more rollout. A 21.5 motor for example would need a lot of rollout, like 5.50". A 3.5 motor for Open Mod would be 2.00" or less. Blinky classes tend to benefit from stronger gauss ratings on the rotor.

    I have not heard of anyone using the length of the straights in their math to help calculate the rollout.

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