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220 posts · Page 11 of 19
chumbucket
Master Seaman
1 / 3
Creepy
This is Creepy,a springer tug that is 5 yrs old now.He pushes #1200lb pumpkins for the pumpkin regatta along with saving many of the PMPBA club members boats from certain sinking or floating away.I never go to any of the club floats without him.He runs a Harbor freight 550 motor running a Target Hobby 320amp ESC,on a 5000mah 2s lipo battery.The plans can be downloaded free off the internet and takes about a week to build for the experienced builder,Great for the new boat builders to do because its an easy build tug.Simple door skins,some balsa,1/2a running gear from Dumas,1.5 brass prop,2x2 rudder from aluminum,cheap 2channel radio,ESC from Target Hobby.
1 comment
  • jarvoLieutenant
    Thank god we dont have 1200 pound pumpkins floating around our lake!!!! just goes to show what these small tugs can do

    Mark
Ronald
Fleet Admiral
1 / 4
Michael (formerly Carol Moran)
My grandson Michael helped me build this kit last winter. We had fun researching existing tug boats of the era, and upgrading some of the details. After the bath tub test, I changed from direct drive to a 3:1 ratio motor to keep it running at a scale speed.
Liked by hightide and figtree7nts
1 comment
  • figtree7ntsAdmiral
    Great job, on the Tug Michael AKA Carol Moran.
    I see the grandson is an aspiring model builder again great job.
EricMB
Chief Petty Officer 1st Class
1 / 3
Toby Tug (previously a Seaport Workboat)
Here's the photos of the cord coming through the middle of the crane, connected to the sail winch on the bottom end. The bracket to get it to go round 90 degrees had to be modified as it started jamming with no weight on the hook, now a piece of bent tube cut in half as a channel.
Liked by daveevans and shavings
3 comments
  • EricMBChief Petty Officer 1st Class
    Nope, an Estate Agent! (As well as bring the son of an engineer... %uD83D%uDE0E)
  • figtree7ntsAdmiral
    That explains your abilities! My abilities are what can I glue next!
EricMB
Chief Petty Officer 1st Class
Toby Tug (previously a seaport workboat)
Crane story part 3! Now that the jib raised and lowered, I had to tackle rotating the turret. I canibilsed a radar setup I'd made (again from helicopter parts after a crash!) to rotate the turret. Video of the radar motor in operation shown.
Liked by John2
EricMB
Chief Petty Officer 1st Class
1 / 4
Toby Tug (previously a Seaport Workboat)
Crane story continued.. once the swash plate was connected via servo arms to the jib, I had to develop an arm to control them from a servo - pics attached. Once the bracket was attached to the servo, it allowed the jib to move up and down, whilst the turret rotated. I then had to work out how to rotate the turret! More photos to follow..
Liked by cenbeth
4 comments
  • EricMBChief Petty Officer 1st Class
    As the turret is mounted on a hollow tube, this allows the cord to run through the middle of the crane, over the jib and down to the hook, and on the other end, attached to a sail winch so that the hook can be raised and lowered. Will add pics in a sec.
  • JulioPetty Officer 1st Class
    Nice job...
EricMB
Chief Petty Officer 1st Class
1 / 4
Toby Tug (previously a Seaport Workboat)
So, the crane story. Here are pics of the crane in it's original guise - essentially the jib raised and lowered and the turret rotated. I decided to add extensions to the jib internally, and then use servo arms to send them through the deck (inside the turret) such that a servo could raise and lower them from below deck. The issue was trying to get a mechanism that would allow the arm to raise/lower, whilst being able to rotate from inboard to outboard! Solution - a helicopter swash plate from a crashed Blade! The connection joints had to be moved around the swash plate (refixed with superglue) to make it symetrical. More photos to follow..
Liked by chugalone100 and cenbeth
2 comments
  • figtree7ntsAdmiral
    Question how do you control the line going up and down?
  • EricMBChief Petty Officer 1st Class
    Sorry, didn't realise I hadn't answered this question! I used a sail winch mounted under the deck, with the line going through the central tube that the crane is mounted on. I had to add a piece of curved plastic to allow it to go round 90 degrees (half a piece of the inside of a ball point pen!) but it works well.
EricMB
Chief Petty Officer 1st Class
Toby Tug (previously a Seaport Workboat)
Here's a video of the crane in operation on the lake
Liked by John2 and figtree7nts
5 comments
  • jarvoLieutenant
    So you stayed with the standard prop as well??
  • EricMBChief Petty Officer 1st Class
    Yup, three blade plastic prop on the two part prop shaft. I modified the prop shaft with an additional oil filler tube for lubrication tho.. Kept it quieter!
EricMB
Chief Petty Officer 1st Class
Toby Tug (previously a Seaport Workboat)
Here's a video of the inner workings of the crane - video of operation on the water to follow...
Liked by John2
2 comments
  • figtree7ntsAdmiral
    Did you purchase the crane like (RC) or did you make it (RC)? if you made it (RC) great (RC) engineering!
  • EricMBChief Petty Officer 1st Class
    I didn't know you could buy a crane like this! No, it was mechanised from scratch. Lots of head scratching.. I'll post some photos in a bit.
EricMB
Chief Petty Officer 1st Class
Toby Tug (previously a Seaport Workboat)
Here's a heavily modified Seaport Workboat - Toby. Videos to follow - the crane now works in three axis, and it has sound courtesy of a Technobots sound module. The searchlight works, as do the radar, running lights and nav lights.
3 comments
  • figtree7ntsAdmiral
    Ok, belay my last! nice video oops on the other Tug!
  • DougAble Seaman
    A very nice modification, I saw you both at the TUG DAY at Bournville MBC yesterday.

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