Propeller setup for a tugboat
#1
Junior Member
Thread Starter
Join Date: Oct 2015
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
Propeller setup for a tugboat
Hi, i'm kinda new to the hobby (1 year top), i have really good ideas and have small experience with mechanical systems but i really need you guys
i want to make contra-rotating system for a 40'' tugboat but i'm having a few problem to figure how to properly scale it down, does any one of you have a picture or video of the internal mechanism? it'd help me a lot
my other option is to make an adjustable-pitch propeller but i have the same problem, i have a few clues of how it works but i've never seen the inside mechanism only a few vids showing how it work in the outside (no fun )
i want to make contra-rotating system for a 40'' tugboat but i'm having a few problem to figure how to properly scale it down, does any one of you have a picture or video of the internal mechanism? it'd help me a lot
my other option is to make an adjustable-pitch propeller but i have the same problem, i have a few clues of how it works but i've never seen the inside mechanism only a few vids showing how it work in the outside (no fun )
#2
Join Date: Jul 2007
Location: Blackpool Lancs, UNITED KINGDOM
Posts: 1,432
Likes: 0
Received 32 Likes
on
32 Posts
A tug with counter rotating props, one each side, is not uncommon. Contra rotating on the same shaft is not. It is torpedo rather than tug territory. Is it a particular tug you have in mind?
#3
Junior Member
Join Date: Sep 2015
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
1 lefthand pitch and one righthand pitch prop for a 40 inch boat require 2 x 3" inch or 3 1/2" inch props 2 motors fed from the same battery ? just change wiring to get left hand rotation motors don't need anything fancy couple of 12v battery drill motors , old gmc drills make good use of what you can scrounge my next tug is the ocean tundra 48" contra rotating in korts nozzle if you have some time spare , facebook ( Bridgetown model boat group ) there you will see images of my tug I built 45 year ago its only a single prop 4" inch , I built that prop 45 year ago ,,, also there are 2 new built props left hand and right hand 5 blade destin for the ocean tundra ( the motor in the flying duck , is a cut down vw windscreen wiper motor the frame around the armature is brass fabricated ,,, 50 year ago I canablise anything , there was nothing around
chas
chas