Gen 1 Top speed

Discussion in 'VBoost Room' started by jdeitz1979, Jul 15, 2019.

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  1. Jul 15, 2019 #1

    jdeitz1979

    jdeitz1979

    jdeitz1979

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    I was wondering what people think the top speed is on a gen 1. I’ve read you can only get 143, but that number seems low since I’ve been a touch past that a couple times.

    Bone stock speeds, and slightly modified speeds are what I’m interested in. No bottle, blower, turbo etc. just the more basic mods: exhaust, cdi, wheels, carbs, filters etc
     
  2. Jul 15, 2019 #2

    maleko89

    maleko89

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    My guess is 145-155, depending on rider weight and speedometer accuracy. I used to have a gear/speed/rpm calculator but can't seem to find that.
     
  3. Jul 15, 2019 #3

    one2dmax

    one2dmax

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    I can't get my win pep to open so I could see what the dyno recorded but I believe around 150-155 but my trans calculator shows 154 theoretical with the stock size tire.
     

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  4. Jul 15, 2019 #4

    Fire-medic

    Fire-medic

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    As I recall it was 149 mph which conveniently is the top speed for a V-rated tire. That figure was from factory data, as I recall, I'll check some of my road tests to see what the magazines have. I expect that is a 'drag-limited' speed in bolt-upright position. A set of drag bars, rear sets, and a 130 lb rider should see an appreciable increase in speed, w/no other changes. Maybe the aftermarket ram air system air scoops would work there.

    Sean's chart w/the 18" wheel shows an interesting increase, maybe a bit more w/a narrower than 200 tire.
     
    Last edited: Jul 15, 2019

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