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Thanks Chris... yeah independent paddle control is very useful for navigating into 'dock'. Your "Loch Ranza" looks pretty good too. These Graupner kits are hard to come by. I like paddle steamers as a project, and picked up a part built 'city of Bath' from my local club. Hull & decks complete otherwise I have to build powertrain / superstructure. Planned in for later in the year.
Thanks for the compliments! It's been a good project, just adding the final touches a couple of days ago. One bonus about paddle steamers is they don't usually take on water as the paddle shafts are above the water line👍
[Score: 7/10] 42"/8000g PS Iona Capable of 4mph and a runtime of 60mins Chain to a Heng Long Powered by NiMH (7.2v) 3Amp/h Batteries Controlled Through Viper 15 ESC - Comments: It has paddles not propellors! Scratch-built from plan. 2 paddle motors provide independent operation, hence can turn 360 degrees on the spot. Built from wood, brass, 3D printed parts.
So how does it sail? very slowly! Iona is prone to the wind and will slip sideways on a windy day and also keel over on very windy days so one paddle comes out of the water. On a calm day it is a very manoeuvrable craft and looks good. I have a few refinements to add to the boat so it gets finished and looks like a working tug.
A bit of a miscellany here - the funnel fittings or mounts at the top are 3D printed and the 'rope' is some sort of elastic string used in jewellery making. This... 1) keeps it straight which is difficult with regular string or wire, 2) doesn't get damaged when you catch it with a stray arm, tool, etc. Brass steam fittings turned on my lathe. The forward hatch was built in case extra ballast was needed, but has had a beneficial side effect. No ballast was needed and the hatch is filled with foam, so I can wedge in a mini tripod and mount a camera up front. Only briefly tested but looks promising The windlass is a kit from mobile marine models. Easy to construct and looks the part. Tow hook 3D printed.
Fairly standard stuff, the steering. Rudder is made from brass and held to the stainless shaft with glue / pins. There's a chain drive from the servo to the tiller arm, both sides. Servo is accessed from the stern hatch lifting off, and the rear grid (3D printed) also lifts off. Despite having individual drive to each paddle, the rudder is quite useful for steering, although with paddles driven in opposite directions, Iona will turn on the spot. Nice🤓
I decided to build the paddles on my 3D printer, working off the plan rather than building in brass as this should be much quicker... should be! Feeling confident I designed ver 1 & printed it out... and scratched my head a lot to see how this was going to fit together. So ver 2 was much better and almost looked like it would work. Ver 3... same etc. Ver 4 👍 This would assemble looking like paddles. I decided against feathering paddles having talked to a few paddle steamer builders - it seemed more complicated, used slightly more battery power and in 1:36 scale would make little difference to performance. Having built one now I would probably make a few changes but it looks and performs ok. The assembled paddle is attached to a 4mm stainless steel drive shaft with brass bushes. I have recently added some pins to ensure they don't come loose on the lake.🤓
So to power the tug I needed some sort of motor gearbox arrangement, and I wanted 2 of them so I could drive the paddles independently, using 2 ESCs / batteries. The answer came in the form of 1:16 scale model tank motors/gearboxes. I managed to find a couple on a well known selling platform... someone was upgrading their tank to metal gears and had 2 for sale. The gearing got the speed of the output shaft down to almost sensible, so I just needed to reduce it and connect the output to the paddle shafts... using Meccano gears & chains of course. This works well and allows scale speed running of the paddles up to much faster than scale speed!(if it's windy) Oh, just to mention the motor frames were mounted with grommets to blocks of wood to provide some suspension, and be removable if necessary.🤓
Well I said in blog 1 this was a mixed media ship... I forgot to mention the concrete. The bathtub test showed that the ship sailed ON the water rather than in it, so some serious ballast weight needed to be added. As I don't have any spare lead, and buying the amount needed would be expensive, I discovered an old bag of cement in the shed. Excellent! I roughly calculated how much to use to infill the base of the tug - about 1 inch depth distributed bows to stern, up to the level of the frames, so I could fit a wooden floor to mount the motors / electronics onto. Luckily this came out about right, and the paddles would sit in the water correctly🤓
Building the paddle boxes was remarkably easy, once the 1mm ply had been steamed for bending. I decided to build the boxes first and make sure the paddles fitted inside later, the idea being that all this would come apart for maintenance should it be necessary. (it usually is!). There are few models to be found on the internet to use as reference and hardly any images of the original tug. And to confuse matters, PS Iona also existed as a passenger ship, as well as tug, and looked a bit different. The superstructure is really simple and quick to build, with some more planking! Am liking planking small areas now. The funnels came from some scrap plastic tubing in the garage... just the right diameter too, a lucky find. These will screwed in place from below once I have the other funnel parts made. I plan to run the tug on batteries rather than steam, as I am a relative novice to model boat building. The whole deck will be fitted with 1mm ply as a base before... more planking! Before all this is glued in place, I thought it best to water test the ship first and see how much ballast I am likely to need.
So... here is a compressed build blog of my paddle tug Iona... and I'm playing catch-up as the vessel is 95% complete and has been sailed already, but there may be some interest in what I've done. Iona was scratch-built off plan and has turned out to be the cheapest build so far out of 3 I've made, mainly because I was able to source materials from the leftovers box! It's a 'mixed-media' boat 😜using traditional methods of plank on frame hull, with paddles made on my 3D printer, and other parts turned on the lathe. So starting with the hull, frames were drawn out, transferred to some scrap 9mm ply and cut out on my bandsaw, along with the keel. These were assembled on a build board with some right angle brackets / measuring tools and test fitted before being stuck in place with epoxy. This was quite difficult as the shape of the hull is critical and comes right at the start of the build. I did remake 1 frame to correct alignment. The deck stringers need to bend in 2 directions, so some steaming with a carpet steam cleaner attached to some tubes worked and the wood clamped in place to dry. Outboard sponsons (?) were fitted to make a frame for the paddle boxes to fit on. Then a large sheet of ply forms the bottom of the hull, and the only job left to complete was the (tedious) planking. This was my 1st plank on frame ship... and it took ages. I think it came out reasonably OK but I'm not a perfectionist and I know if I'd spent more time it could be better... but I didn't! Next blog will feature building the paddle boxes and superstructure.🤓
[Score: 9/10] 39" Fairmount Glacier Capable of 4mph and a runtime of 60mins Twin Propellors (3 Blade) Direct Drive to a 2 x M500 Mtronix (3 Blade) Powered by Lead Acid (12v) 7Amp/h Batteries Controlled Through JP Marine (20Amps) ESC - Comments: A Billings kit, the Fairmount Glacier (or Alpine - comes with 5 naming options) is a sturdy boat... 2 props in Kort nozzles, extras I've fitted...37 lights, bow thruster, working fire monitors, radar, & horn. Runs on 2 x 12v 7AH batteries, so runs for a while! Colour scheme makes it visible on the lake too!
thank Dave - there are HUGE access covers both at the front and rear of the tug, so not too worried about aligning motors & prop shaft. the only cramped space as you will eventually see is when fitting a bow thruster.... but more of that in due course ( the blog is catching up with th build!) Space inside the 1st tug was OK till the deck was sealed in place, then it was really tight!
I have to admit I'm a bit of a novice and tend to work on my own a lot, although I have looked at build videos on YouTube. I often wonder about the best time to paint the various bits as it seems some will be difficult to do later. So I painted the guard rail uprights and glued them in... then clamped the painted guard rails (proper names?) then started adding the hull sides, glued, clamped, and pinned where necessary. Size comparison picture with tug Annabelle (Billings Banckert) Fairmount is 1:75 scale, Banckert is 1:48
The bottom of the hull comes mainly as 4 large pieces of ply - 2 which fit flat on to the frames, and the 2 rear pieces have a nice S curve to make things interesting. Relatively easy to glue with plenty of clamps. The bow structure all slotted together with a little added effort from some screw up large clamps!
Billings Kit - my 2nd boat build. This time I thought I'd challenge my skills and build a plank on frame boat rather than using an ABS hull. Fairmount Alpine is a 75M Ocean going tug used for heavy duty work. The model is 1:75 scale, so around 1metre long. As I started this some time ago (before I joined this website) I'll put some regular posts up to catch up to where I am now... still not finished! Kit comes with all timber laser cut, brass fittings, instructions etc. Extra purchases of course are the motors / ESCs / and other electronics. This model is large enough to accommodate a few ancillaries such as lighting / bow thruster etc. Although laser cut, some of the joints needed trimming, and I had to use some of my bigger clamps!
[Score: 5/10] 29" PT109 Twin Propellors (2 Blade S Type 35mm) Direct Drive to a M500 (2 Blade S Type) Powered by NiMH (7.2v) 3Amp/h Batteries Controlled Through HM50 ESC - Comments: EBay purchase... 20 yr old Lindberg kit of an Elco 80ft PT boat, a bit battered with no motor/ESC or RC - only tested in the bath at the moment! PT109 was the craft JFK commanded / got rammed by a Japanese destroyer!
[Score: 7/10] 26"/4000g Annabelle Capable of 3mph and a runtime of 30mins Single Propellor (3 Blade 35mm) Direct Drive to a 540 (3 Blade) Powered by NiMH (8.4v) 3Amp/h Batteries - Comments: My 1st tug boat -relatively small! Billings kit - ABS hull, wooden superstructure and decks, kit included hull and deck fittings in brass / plastic, propshafts, rudders and propellers. Good manual