Thanks Thanks:  0
Likes Likes:  0
Page 2 of 2 FirstFirst 12
Results 11 to 11 of 11

Thread: Dirty 30...prop that I cannot find

  1. #11
    Team Member
    Join Date
    Jun 2005
    Location
    Eastern PA
    Posts
    661
    Post Thanks / Like

    Default

    You guys got to be kidding! Lots of guys built these things and ran them for years--me, for example.

    What's a Dirty Thirty and how do you build one? Take a 44 cube power head, put a Mark 30 crank in it (it fits and works fine), then mount it on a Mark 30 tower. The tiny impeller is up to the task--mine never overheated--but finding a prop with enough pitch is a problem. (The LU has a steep gear ratio--1.86:1 as I recall.) My buddy Dingy Bob scored a 17 pitch brass racing prop and fitted a 6 spline hub to her. That was the ticket for my 9 foot dink boat, and it ran great for years. I eventually went to a conventional Mark 55/ Merc 400 tower and LU simply because used props were easier to find.

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

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. The Liars Point Their Dirty Fingers Again
    By Master Oil Racing Team in forum Boat Racing Encyclopedia
    Replies: 9
    Last Post: 05-14-2011, 04:42 PM
  2. 2 cycle/4 cycle, define dirty
    By MissKTdoodle in forum Technical Discussion
    Replies: 2
    Last Post: 09-14-2008, 07:04 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
  •