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>> Home > Boat Building Blogs > Push-tug San Pedro
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Push-tug San Pedro Print Booklet
Author: figtree7nts   Posts: 43   Photos: 67   Subscribers: 1   Views: 6888   Responses: 70   |   Most recent posts shown first   (Show oldest first)

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Repairing the Suspected Seam! - Posted: 16th Mar 2017
I have found a piece of plastic that came from the transom!
it's the right size for the stern area which I believe is leaking!
The seam looks as if it's separating, so maybe I'll reinforce the seam!
As you can see from the picture on the right.
The seam is slowly starting to separate.😡😭
What a shame I haven't even taken it to the pond yet!

Attached Photos - Click To View Large
Suspected Seam - Posted: 16th Mar 2017
Ok, I have found a suspected leaky seam, But i'm not sure if this is where the water is coming in from yet!
I do know this seam is below the waterline! going to have to seal it some how!
What procedure should I use any advice is welcomed...

Attached Photos - Click To View Large

Response by figtree7nts on the 17th Mar 2017
Good Morning Dave,

Thank You, I looked and found what I need!👍
Great advice, I won't make the angel myself.
am going to look into purchasing ready made angles.
As for the chisel I'm thinking 1/4", What do you think?
Response by Dave M on the 17th Mar 2017
Hi Ed
I suggested 1/4" as this will cover the whole area to be scraped. You could use a craft knife but a chisel is less likely to cut into the plastic.
Response by figtree7nts on the 17th Mar 2017
Hi Dave,

I found an 1/2" chisel at the local Dollar Store!
Next step will be to draw a chisel line around the hull.
Seems like there's a lot of work ahead of me!
But, for now will work on a clock the wife brought home from the thrift shop...
Also under the weather, The grandchildren were by, left me with a cold.😭
Sad News - Posted: 15th Mar 2017
I had San Pedro in the bath a day ago, Just doing a seaworthiness test!
I think she was in the water for about 5hrs, needles to say she took on about 4oz of water!
I didn't realize until a day later when I picked her up to put her back in the water. I saw a water stain didn't pay to much attention to it. I went to turn on her running system. As you can imagine I had a look of dread, when I saw all that water and no pump to pump it out of the engine room...
I took the batteries out, they suffered no damage.
The electronics was pulled out and dried!
I left the superstructure off so the engine room can dry.
It will be a few weeks of drying, before I can try to access where the leak is coming from.😡😡😡
But I think it's all the weight she carries. 21lbs is quite a bit to carry!
Oh, well I'll figure it out later...😭😭😭
Response by Tall Paul on the 16th Mar 2017
Hi Ed,

You mentioned water ingress, I carry to boating pond a number of bits and tools, one of which is a > 100 ml Syringe ... There is one on Amazon with a tube to reach into difficult to access areas.

The advice about glue for plastic to pastic seems helpful, I had similar problem of trying to obtain water proof join of plastic and wood.

Best of luck, Paul.
Response by figtree7nts on the 16th Mar 2017
Hi Mark,
The rudder tubes are well above the water line!
But I'll check them out.
And the prop shafts were greest properly But i will recheck!
I think I'm going to have to look at all the seams!
Thanks for the advice, 👍

Hi Dave,
The glue i used was Zap-a-Gap, also so Z-Poxy for the wood structure! I'm going to go over the hull and see if I can trace the leak!
I suspect a seam that's on the bottom of the hull.
That's where I felt the leak when I picked up the hull.
But who know exactly where the water is coming from.

I'll keep you posted, Thanks for your input really appreciate it 👍


PS. I'm looking into the UHU Plus Acrylit!
Response by figtree7nts on the 16th Mar 2017
Hi Paul,

Thanks, Yes every one's advice is well welcomed.
I also like your advice about the Syringe with the little hose attached to it!
I think I'll look for the seam that's leaking.
I'll fix that and also buy a water pump for good measure....

Arrival of new Crew - Posted: 11th Mar 2017
OK, I've received my three crewmen from C.M.B. after about a week of time. They are finally here and glued in place! I think I'll order five or six more just to put around the boat! Three crewmen just doesn't do it.

Attached Photos - Click To View Large

Response by Dave M on the 14th Mar 2017
Hi Ed
Do you remember which section of the figures you found yours? There are rather a lot to search through.
Response by Dave M on the 14th Mar 2017
Hi Ed
Just looked at the CMB site and found
They appear to be the same as your figures. The link works, it's possible that your link is for the USA.
Figures are very realistic.
Response by figtree7nts on the 14th Mar 2017
Hi Dave,

Thanks Dave,
your link works like my link works I'm not sure why I get such a long link!
I'm going to reprogram my Icon for C.M.B. also if any one ask I'll give them the shortened version of the C.M.B. figures at the website URL....
I have a funny feeling I get the long URL because I'm in the US. has to be I don't know!
Crew just ordered - Posted: 2nd Mar 2017
OK, every boat should have a Crew, So I just ordered three crew members to start...
Life Rings - Posted: 31st Jan 2017
Well along with having glued my superstructure together.
I was able to glue in place, all the life rings I had from a previous build.

Attached Photos - Click To View Large
Caldercraft Professional Glue - Posted: 29th Jan 2017
I never glued the superstructure of the San Pedro together.
I was waiting to see if I could find a thick glue.
This I found in the Cornwall Model Boats website, It took about a week and a half to get to me. Now all I have to do is glue the San Pedro superstructure together.
First lets experiment and see how the glue works. Well I took a piece of 1/8" ply one drop of glue did it. It was glued instantly instead of the ply just absorbing the glue. the glue was thick enough were it glued the pieces together, Success...
I also tried it on plastic, with great success also...

Attached Photos - Click To View Large

Response by jarvo on the 30th Jan 2017
Hi Ed, Happy new year, have a look in your local builders merchant or walmart type place, thick cyno is common to a lot of sellers, would save you postage to, same as pva, buy the stuff from a woodworking store

Response by figtree7nts on the 30th Jan 2017
Hi Mark,

It only cost me £2.02 to post from Cornwall Model Boats.
That's not much considering, if I were to go to my local hobby shop it would cost me about £6.00 just to go. and I would have to travel one hour in one direction. So I actually don't mind waiting or paying a little bit of post for my supplies. and it just takes about a week and a half turn around time. I have looked in my local Walmart but didn't find the right stuff. I had been waiting over two months to find the right glue and I did just that.
The wait time paid off, Patients is a virtue!👍
Response by jarvo on the 30th Jan 2017
Hi Ed, didn't realise you were so far out, like you said £2 for the right stuff is ok

San Pedro Push Boat - Posted: 19th Dec 2016
I'm waiting patiently until the spring thaw, To put my San Pedro in the water.
Time to start building her Barge, but that's another blog.

Attached Photos - Click To View Large

Response by jarvo on the 23rd Dec 2016
No worries Ed, my truck is big enough to carry my Amsterdam with 2 smaller boats and the Transmitter box, spare batteries etc, like i said it folds up so very usefull

Response by figtree7nts on the 24th Dec 2016
Hi Mark

The one you have what are it's dimensions, See my tug Serenity is 36" x 7.1/2" and the San Pedro is 30" x 12"
Is it big enough for them? also where did you get it from?
Response by jarvo on the 24th Dec 2016
Hi Ed, my truck is 36" x 18" with a 10" gap over the rear and front rails, my 40" Amsterdam and my 56" Maersk Logger fit with the stearn sticking out. I bought it from ebay, look for folding garden truck. If not available from the states, try ebay uk and contact some of the sellers for the shipping price
San Pedro Pus Boat - Engine Room Fittings - Posted: 17th Nov 2016
I tried different Mixers unfortunately they were the wrong kind of mixers, after doing some research I now know I need an Action Electronics Mixer!
it's a costly component I must say, I guess I'll be getting it by next spring just in time to do a Maiden Voyage.

Attached Photos - Click To View Large

Response by figtree7nts on the 19th Dec 2016
Hi Tomarack,

I have the V-Tail Mixer and the W-Tail Mixer they are from Mtroniks! I tried them out but, all they did was make both motors go forwards or Backwards, I don't see were or how you can program the mixer for Bidirectional control.
Maybe I have the wrong Mixer! what do you think?

I also saw your video on the River Tug.
Response by tomarack on the 20th Dec 2016
sorely I can not put the wiring diagram here, so please look at my album on Rajce , where I placed the wiring diagram!!!

I do not think you got the wrong V-tail mixer, you just need it put to wiring and properly involve.
Therefore, I do not use internal mix at transmitter, and even and cannot program it ( therefore, I chose a simple mixer - it performed only simple mixing of signals, in my case Ail and Throttle , no damned programming!!)
  when connecting of engines because you have to program the transmitter to function properly. (Thr forward - backward) and canal -1 ("Ailerons" - adjust the direction of rotation so that when tilting the control stick left, right engine had more speed than the left engine, and vice versa)
I have on Lulonga the rudder separately on channel 4 (on my model has a lousy efficiency), but it can be connected via a Y cable to output Ail, where one branch goes to the servo, the second branch to the V-tail mixer, or you can engage Mix, which lead the canal 1 Ail, a slave can 4 - Rudder - wants this just to try.
Of course you can try a mix of programming of the transmitter, but I wanted first and foremost a simple electrical connection that works.
Then, if you know how that works, then it is easier to try and programming of the transmitter. This I then used my second model, Thames sailing barge Capricorn

At the end of this album I gave examples of wiring and mixes too. I made a simple table, and then tried what and how it works. But it is a control model sailboats. For your model table would look different. It depends on what type of transmitter you have.
wishing success ! Tom
Response by figtree7nts on the 20th Dec 2016
Hi Tomarack

I now have a copy of your diagram, I will work on setting up my San Pedro with the mixer again.
I will let you know if I'm successful.

San Pedro Push Boat - Engine Room Fittings - Posted: 7th Nov 2016
OK, I've finished the engine room.
each motor is independently powered and has it's own ESC.
I have positioned the Receiver above the waterline, so their is less possibility of RF interference.
unfortunately my engine room turned out like spaghetti's, but everything works OK.

Attached Photos - Click To View Large

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