150 hp starcraft inboard , question about puting 2 propellers instead of 1

Discussion in 'Props' started by Sceptre, Jun 21, 2010.

  1. Sceptre
    Joined: Mar 2008
    Posts: 35
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Toronto

    Sceptre Junior Member

    I broke my prop on my 140 starcraft inboard
    when I give full throttle the rpms dont go above 2800 and when i try to haul someone on the tube it doesnt go faster den 20km/h so i was wondering what I can do to make the boat go faster they sell thouse things you can put above the prop looks like whale tail to make the front stay on water or I was thinking of puting 2 props
     
  2. Jango
    Joined: Aug 2005
    Posts: 519
    Likes: 7, Points: 0, Legacy Rep: 63
    Location: Mid Atlantic

    Jango Senior Enthusiast

    You need to find out why the motor will not rev up? Is it an engine problem or due to load on drive system? If you're using a broken prop, get it fixed or replaced. If it has too much pitch or Dia, it will not get to max rpm. If somehow you could install Two props, it will not solve your problem

    A whale tail is used to raise the back of the boat quicker to get on plane and probably will not help much.
    If the correct prop is being used, I would make sure the motor is in tune and next look for excessive weight in the boat or damaged prop/drive system
     
    Last edited: Jun 24, 2010
  3. Sceptre
    Joined: Mar 2008
    Posts: 35
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Toronto

    Sceptre Junior Member

    hmm thanks for the adivce i think its the motor
     

  4. Fanie
    Joined: Oct 2007
    Posts: 4,603
    Likes: 174, Points: 63, Legacy Rep: 2484
    Location: Colonial "Sick Africa"

    Fanie Fanie

    It's the motor or you have gone overboard on the prop :D

    Those 'to make the boat go faster they sell thouse things you can put above the prop looks like whale tail to make the front stay on water' won't make the motor faster, they help to get quicker on the plane but with a little less at top speed.

    whale tail :D
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.