Blaster sprockets gearing

Discussion in 'Suspension' started by Chico, Jul 3, 2019.

  1. Chico

    Chico New Member

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    Was wondering what gear ratio other people use ? I’m not to familiar with the sprockets I’m still a little confused but my blaster has a front 15t and rear 38t could someone give me insight on how it’s geared right now ? I’m looking to buy a new chain and sprockets and don’t know if I should keep what I have or change it up
     
  2. Awk08

    Awk08 Administrator Staff Member Technician

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    15/38 is a huge increase from the stock 13/40
    higher front and lower rear tooth count both lead to higher top speeds, but loss of quickness getting to that top speed.
    I tried 14/40 on my built engine once and found myself constantly changing gears in the trails where before I could
    go thru a turn, stay in the same gear and just get back on it with the stock gearing.
    on a stock-ish engine I'd stay with 13/40 for trail riding, maybe 14/40 for more open area riding.
     
    Kenny38 likes this.
  3. Slydog

    Slydog Active Member Technician

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    13/38 is a good choice.
     
  4. bruleblaster88

    bruleblaster88 New Member

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    I'm rigging up 2 blasters for sand / hillclimbing was wonder what gearing would be best for running skat trac superlites sand tire
     
  5. Slydog

    Slydog Active Member Technician

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    I have no experience with those sand tires .
    What kind of engine work has been done?
    Bigbore?porting? Stock?
    That will have some say in gearing also.
     
  6. bruleblaster88

    bruleblaster88 New Member

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    The one bike is +3 crank 240 big bore drag Port 41 mm carb no air box
    Other bike 28 mm carb plus 4 timing no air box and power pros exhaust

    Both blasters have plus 6 swing arms lightweight hubs and one has a j&j drag axle
     

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