TID TUG

Started by marky

9 updates 63 likes 28 comments
marky Opening post

TID TUG

some pictures of the plans obtained from Sarik Hobbies (santa)
Liked by Cashrc and hermank and
7 comments
  1. Colin HSilver
    Fleet Admiral
    Spot on Martin,
    Very useful on boats that sit on the bottom at low tide in shallow harbours.
    Cheers Colin.
    Liked by RodC and Len1 and
  2. RodC
    Lieutenant Commander
    Thank you for pointing me in a direction. Im really quite unfamiliar with most boat terms. Further to your help I did some research on "skeg" & found this which is also a keel extension but projecting downwards from the hull, faired a bit more than just a bearing at the base of the rudder
    Liked by Martin555 and Colin H

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marky #2 of 10

Wood pack

Due to the new gaffer where I used to work frowning on homers , I purchased the wood pack from Sarik which arrived this afternoon its really nice wood and well cut , it consists of the keel, frames and deck (photos to follow)this is a Chine hulled tug and was fortunate when clearing out my late mothers house up the loft (attic) were a few old plywood tea chests in the need of some t.l.c .
Cheers Marky👍
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2 comments

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marky #3 of 10

Static or ?

sorry its been a while, I didn't realise just how long it had been until I saw the last blog post ,due to circumstances I at this moment have a very low immune system so cant leave the house , so nows the chance to get on with the build .
I now have the decision to make whether to bite the bullet and build her as a rc ship or plump for the old worn road of static .
If I decide the rc route iI may be on quite a lot with questions .
Question 1- how do you determine the length/diameter of the prop shaft .
Question 2-the build guide says the motor. is a Como 500 with a 6:1 reduction gear ,is this the only motor I can use or are there any alternatives ?
That's all for now
all the best .
cheers Marky
Liked by TerryH and pressonreguardless and
4 comments
  1. marky
    Commodore
    Thanks Dave , having only built static previously it's a bit of a leap for me.
  2. TerryH
    Midshipman
    If your looking for a good motor then I would say look at the Torpedo 500 6.1 geared motor . best place to fit motor depends on what your building, tugs etc need there propshaft as straight as possible along the hull whereas fast types need propshaft at around a 10 degree angle
    Liked by marky

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marky #4 of 10

Motor

My brother has just given me a couple of motors (working condition) that he got out of old battery powered drills , he said one of these motors should suffice ? we hooked them up to a 6volt m/c battery and they both ran at a steady rate
any thoughts 👍
Liked by TerryH and Len1 and
3 comments
  1. flaxbybuck
    Captain
    using a motor of unknown specification may have its problems so I would be wary of it. By all means give it a try (I would) but also, be prepared for the unexpected. Don't be disappointed if it doesn't work out 😉
    Liked by RodC and Len1
  2. RodC
    Lieutenant Commander
    In North America circa 2002 use of cordless drill power train was common in larger RC aircraft as the belt reduction cud swing a large prop. The nicad drill's battery gave a 3 to 5min flight with those brushed mtrs

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marky #5 of 10

Making a start

I've decided to make a start so tonight I'm going to start taking the keel and frames out , I got the wood pack and its good quality ply only strange thing is some frames are 6mm and other frames are 3mm and have to be doubled up ,its the same for the keel 2x forward ends and 2x aft ends obviously there's method in this madness. will post some photos later or tomorrow
cheers Marky👍
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marky #6 of 10

Starter for 10

Cut the pieces out ,well nicked the wee tabs and popped them out ,the frames cut in the 6mm ply were a bit scorched so Black fingerprints everywhere 😀one of the 3mm ply sheets is numbered so its just a case of pairing them up.
Will give them a light sand some time tomorrow and then make a pattern from the cut parts and that will give me a template if I want to make another tug .
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marky #7 of 10

Glued up

Frames and keel doubled up and glued so leaving them clamped up overnight to fully cure .
Question - if you look at the picture of the keel you will notice I've marked the position of the prop shaft on and it's quite near the top edge of the keel ,can I cut a section out the keel to accommodate the motor probably between frames 7and 6 .
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marky #8 of 10

Motor ?

I popped into a wee model shop today (before hospital) alas no one knew anything about RC for boats the dealt primarily with RC Cars but the nice young man said they had a motor -esc combo that should work ,the motor was a 550 brushed motor with a 320A water proof ESC .
My question is would this motor combo do me for the tug?I
And it's pretty reasonable at £18.
Liked by dave976 and TerryH and
1 comment
  1. Colin HSilver
    Fleet Admiral
    Good evening Marky, I have a a large tug running on a 540 motor using a 12v 7ah sla battery with no issues, gives about 90 minutes running on full power while towing or up to 2.5 hours running solo.
    As the 550 is much more efficient motor it should be fine.( it's the larger tug)
    Cheers Colin.
    Liked by dave976

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marky #9 of 10

Motor.

Thanks Colin, I'll get the good lady to pop into the shop tomorrow and purchase the motor, that's me isolating again for 30 days after today's treatment .
Cheers Marky👍
Liked by dave976 and Colin H
2 comments
  1. Colin HSilver
    Fleet Admiral
    Marky I forgot to mention it runs through a 3 to 1 reduction gearbox. And has a 65mm 4 blade brass prop.
    Hope you find this helpful.
    Cheers Colin.
    Liked by dave976 and marky
  2. Len1
    Lieutenant Commander
    thanks for the tip about Technobots and also MFACOMO looks to be a good source for drive train items
    Liked by RNinMunich

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marky #10 of 10

Prop and prop shaft

That's me got my motor I now need the help of you kind ladies and gentlemen as to determine the length of the prop shaft I've taken a few photos for you to peruse ,on the drawing the centre line of the shaft is 6mm above the top of the keel, I'm proposing to cut a piece 1/2 the diameter of the motor out the keel to keep the shaft and motor as straight as possible strengthening either side , I'm just not sure whether to do this at frame 7 or 6 , in the photos There is a ruler on the drawing ,any idea what length the prop shaft should be?
There is also a picture of the drawing of the prop with a ruler next to it, what diameter should the prop be? If you take the measurement from the centre line to the top it's 30mm ,is this a 60mm prop? Last question as its a single prop should it be left or right handed ?.
Thanks in advance Marky
Liked by RNinMunich and Colin H
9 comments

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