Thread: Johnson "70mod"

  1. #271
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    yes it makes sense what you have written.

  2. #272
    Team Member hupiveneilija's Avatar
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    Not much but anyway. https://youtu.be/UgkeT-i8aqI
    55kn

  3. #273
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    just watched todays vids.
    that boat is running very very good, sounds very good too, nice crisp 2 stroke sound.

    Soon be needing to find something to race against, hunt for a V6 on a 19ft .

  4. #274
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    can you show us a bit more about the prop you use and how you modified it from being a normal prop.
    this seems to be giving you some very good results.

  5. #275
    Team Member hupiveneilija's Avatar
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    Here.
    Attached Images Attached Images          

  6. #276
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    that looks very good.

    been alter in lots of ways, nothing like an srx now.

    what is wrong with the hub ? it is not all the way in , should be level with hub face !!!! is there a reason for this ?
    Did you have a new hub put in this prop ? was it a v6 prop re-hubbed. ?

  7. #277
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    anymore updates on how the engine is now ?
    is everything still good ?

  8. #278
    Team Member hupiveneilija's Avatar
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    Havent tried bigger carbs yet. Been playing with prop, back&forth. Made those waterholes on the block,wich i enlarged before, smaller today. Going to run it tomorrow to see of i can make temperature behave like i want.
    Waters getting warmer now, affect speeds by decreasing it.

    Btw went 85km and 30l gas. Not much i think.

  9. #279
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    85 kilometres distance = 52 miles.
    30 litres of fuel = 6.6 gallons. depends on how long it took to get there ? if it took 1 hour then thats about right.

    it works out roughly every 10hp - 1 gallon per hour, so 60hp = 6 gallons per hour, 100hp =10 gallons per hour.

    so your doing fine on the fuel side.

  10. #280
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    We old geezers grew up with that mpg estimating technique, and it's still good today.

    Jeff
    "We live at the bottom of an ocean of air." - General Marvage Slatington

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