Thread: Johnson "70mod"

  1. #271
    Banned
    Join Date
    Nov 2016
    Posts
    378
    Post Thanks / Like

    Default

    yes it makes sense what you have written.

  2. #272
    Team Member hupiveneilija's Avatar
    Join Date
    Oct 2014
    Location
    Finland
    Posts
    297
    Post Thanks / Like

    Default

    Not much but anyway. https://youtu.be/UgkeT-i8aqI
    55kn

  3. #273
    Banned
    Join Date
    Nov 2016
    Posts
    378
    Post Thanks / Like

    Default

    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
    Banned
    Join Date
    Nov 2016
    Posts
    378
    Post Thanks / Like

    Default

    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
    Join Date
    Oct 2014
    Location
    Finland
    Posts
    297
    Post Thanks / Like

    Default

    Here.
    Attached Images Attached Images          

  6. #276
    Banned
    Join Date
    Nov 2016
    Posts
    378
    Post Thanks / Like

    Default

    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
    Banned
    Join Date
    Nov 2016
    Posts
    378
    Post Thanks / Like

    Default

    anymore updates on how the engine is now ?
    is everything still good ?

  8. #278
    Team Member hupiveneilija's Avatar
    Join Date
    Oct 2014
    Location
    Finland
    Posts
    297
    Post Thanks / Like

    Default

    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
    Banned
    Join Date
    Nov 2016
    Posts
    378
    Post Thanks / Like

    Default

    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
    Team Member
    Join Date
    Jun 2005
    Location
    Eastern PA
    Posts
    742
    Post Thanks / Like

    Default

    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

Thread Information

Users Browsing this Thread

There are currently 10 users browsing this thread. (0 members and 10 guests)

Similar Threads

  1. "Hi Johnson" - Prop Master - Story
    By Tomtall in forum Propellers
    Replies: 6
    Last Post: 08-09-2015, 01:27 AM
  2. Dennis Johnson "Trafficade" Racing
    By Ron Hill in forum Boat Racing Encyclopedia
    Replies: 1
    Last Post: 11-05-2006, 07:26 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •