Trying the jet reverse bucket mods, engine sounds and radio, (wanted to see if you could still hear the radio over the motor.) Still needs a deflector fitted above the jet.
Hi Jb,
It look like the bucket will have to be a very close fit to the top of the thruster when using in reverse
And as you say a small deflector so that it clears the bucket in the forward mode.
Hi Martin, I've made a small plate to go above the jet which should divert the water away from the bucket pushrod, just have to glue it on and test it (possibly tomorrow). Most jet boats tend to have the same problem with back feed out the top as it's pretty much impossible to seal, because the nozzle has to move from side to side. Most of the Hamilton production jet boats had a large platform over the jet unit which stopped water splashing up the transom (see pics of some early Hamilton jet boats).
The lens on my small vid cam is stuffed and I really need to invest in a GO Pro or similar (when I win Lotto)😁 I Have a few other cheapies, but this was the best, until I somehow scratched the lens, and then tried to polish it☹️. Works a bit better at longer range on sunny days. May be able to get it repaired as it is just the domed protective lens over the main tiny lens.
Couldn't do much more on the boat, (waiting for stuff from China) so took my latest plane (finished early this year and never tested) down to the big playing fields for some high speed taxi runs. on the last run, it actually took off accidentally, (but very smoothly) before I was ready and ended up putting it back down quickly but bending a landing gear strut. I consider it very successful as I now know it will fly, and my wing construction around the electric retract was strong enough to bend the 4mm landing gear wire. Same thing happened with another own design, plane but I was in a position to keep going after it leapt off the ground unexpectedly, and I found it flew perfectly! At least today provided something positive which is always good. This is one I made from some photographs of a one off prototype. Had my doubts if the wing design was correct, but it seems ok.
You might be interested in these vids from INCAT Australia,- amazing ship. It uses the Finnish Wartsila companys' waterjets.
Had a large moment of enthusiasm yesterday and fitted the jet unit and associated bits. Then it was time to wet its bum for a test. First off, the jet wouldn't suck water without pushing the stern down slightly, (as I expected due to the boats' light weight.) I added 300g to the stern and she was away😊 Happiness filled I were😁!. Reversing bucket works very well (even though it's a bit of a blob on the transom). You really need one if you don't want to go forward forever, trying not to 'sail yourself into a corner'.
I Need to waterproof the pushrod holes in the transom but the bellows I bought are too stiff and compress too much, so I'll have to come up with another method, (probably some deflectors for a start. Only a problem when in reverse with a bit of throttle on. Plenty of power with the 2s I was using, but motor is rated 12-24v so it would scream, -even with a 3s. I'll start with 2s and see how it goes. Might have an initial blast on the lake this week if all goes well, although I'd like to finish the deck bits first.
Just waiting for some Voltage regs to come so I can complete the electrical side with the fancy bits.. The mechanical and electrical sides are as good as done, Grahams timer is working perfectly, with the water pump and air pumps hooked up (going to install a VReg on each one plus the smoker).
Managed to connect up the motor once all the drive bearings were in.. first video is with a 7.2v battery (which was actually nearly flat!) and then in the second video with a fully charged 11.1v lipo!
Might get the Atlantic RIB to plane yet..
AND NOW FOR SOMETHING COMPLETELY DIFFERENT,-SEALEGS
Not something you see every day! Saw a 'Sealegs' boat coming in from over the horizon and it eventually came straight onto and up the beach past the Orewa surf club. It then proceeded about 300m down the main road (holding up the traffic) to the petrol station to fill up, then went back and down the beach, into the water and away. Guy broke a number of rules doing this but looked like one of those 'don't give a stuff' people, His wife and tiny kid (the only one with a life jacket) were sitting in the back all the time.
The Sealegs is an NZ designed and built (built in Albany- Auckland) boat sold (and copied) all round the world. Really amazing piece of kit. Drive is hydraulic, and driven by a small self start diesel motor in its' own compartment. If I ever won Lotto I'd certainly be looking at one😁 They have a special drive on trailer as well.
Not my lake in the thumbnail, don't know where that came from😐
Hi Doug, see comments on the other vid😁. Most of the people who own these live on beaches with riparian access, so they can drive straight to the water from their front yards. Someone had parked one on a sand bank on the shore of the estuary a few weeks back and gone somewhere (visiting perhaps) and it looked hard case sitting there on its' wheels in the mangroves. They can also squat, and sit on the hull while on land with the wheels down slightly to level them. Pretty clever machine but rather expensive.!
JB
I spent a day in one several years ago photographing an Etchells yacht race series in Australia. The versatility was brilliant, especially being able to pull up in the river at the end of the day and get photos that otherwise would have been lost.
While I'm at it I have put up this video of my tug. I had been having problems with this and I completely replaced everything inside. Turns out the rudder servo was dodgy and the motor, a geared 500 was far too poky. It now performs beautifully and very quietly. Obviously it's an old Graupner Bugsier but refurbished by me to look a bit more like a British tug. The motor is a low noise 500 with direct drive mounted on a rubber sheet - the only noise is a whine from the esc.
Here we have two terrific RC models of the Motor Vessel CUMBRAE built by two Buxton Model Boat Club Members - No1 is Blue belonging to Roger and the second belongs to Paul..
The original vessel was built by George Brown & Co in 1936 for Clyde Pilotage Authority, Glasgow.
Made a few adjustments, including alloy braces for the motor pylon (was a bit flexible and I think it was twisting slightly under power. Rudder linkages still need tightening up (crappy HK clevises,-probably will fit ball links) but it was a bit better this time (apart from a high speed excursion into the rushes at the end,-no damage, got in the shadow and brain couldn't calculate time, angle and distance😁) Battery was down to 7.5v/cell after all this (4000mAh 3s) so not a bad run time. Only had full throttle for about 3 secs total, -too hairy!😁 Put in expo and dual rates but that didn't do much (too much rudder slop to be accurate). Back to the mod shop.
Hi JB - the ones we have are at the most 2mm - cut one on the laser last week for a stencil for beehives - was not talking about the the thick nylon type boards ,
Hi. This is my 2nd scratch built boat since lock down began. The first was the H S L 103 finished 6/7 weeks ago. Still waiting to be tested outside of workshop. This one is built on a fibre glass hull,and has a length of 44 inches and a beam of 16. My power plant is twin out runner motors purple power. 600kv, running through twin 70 amp ESC and with 4 cell 5000 amp lipos feeding them. All accommodation is made using 6 mm three ply. And every fitting you see on the boat was scratch built by me. Lighting system is 12 v grain of wheat .props are three bladed brass 45 mm by prop shop
A test post on behalf of redpmg.
The engines are built by a mate of his.
"The boats are built by a 90+ year old gent by the name of Alan Raubenheimer, who used to make Rose Pop Pop Boats - used to advertise in MB etc.
Now into his 90s he has finally given up production."
Here goes🤞
Doug
It woiks 😊; just ignore the 'Invalid file' notice and click the blue magnifying glass and then the download button.
Run with Windows Media Player.
When it opens Press F11 for full screen or drag a corner with the cursor to enlarge.
Resolution is not too good I'm afraid🤔
Despite the music the action takes place in SA not Hawaii!😉
Hi Doug, I finally figured out how to open this - it was well worth persevering with, this has a real feel good factor especially with the music and I like his R/C, and a steam outboard engine - brilliant.
Super tug and steering wonder. Bought as a kit and made from wood and plastic.
There was no instructions, and without them a nightmare.eventually getting them put the basics into perspective, eventually building the boat.i changed the motor to a 480 and made my own propshaft on the lathe, also a brass rudder, which is operated by mini servo.The esc is a 10 amp m.troniks which works great small but powerful, turns in its own length to port and starboard either astern or forwards
AL KUBAR 2 Is a " Tug Boat " - 1:24 scale model of a harbour tug operating in the United Arab Emirates. This large tug is 40in long by 14in beam. Uses twin electric motors and displaces approx. 45lbs.
Owner Dave Moxam travels from Sheffield most week ends is a member of the Buxton Model Boat Club.
It look like the bucket will have to be a very close fit to the top of the thruster when using in reverse
And as you say a small deflector so that it clears the bucket in the forward mode.
Shame about the misty video.
Martin555.
The lens on my small vid cam is stuffed and I really need to invest in a GO Pro or similar (when I win Lotto)😁 I Have a few other cheapies, but this was the best, until I somehow scratched the lens, and then tried to polish it☹️. Works a bit better at longer range on sunny days. May be able to get it repaired as it is just the domed protective lens over the main tiny lens.
Couldn't do much more on the boat, (waiting for stuff from China) so took my latest plane (finished early this year and never tested) down to the big playing fields for some high speed taxi runs. on the last run, it actually took off accidentally, (but very smoothly) before I was ready and ended up putting it back down quickly but bending a landing gear strut. I consider it very successful as I now know it will fly, and my wing construction around the electric retract was strong enough to bend the 4mm landing gear wire. Same thing happened with another own design, plane but I was in a position to keep going after it leapt off the ground unexpectedly, and I found it flew perfectly! At least today provided something positive which is always good. This is one I made from some photographs of a one off prototype. Had my doubts if the wing design was correct, but it seems ok.
You might be interested in these vids from INCAT Australia,- amazing ship. It uses the Finnish Wartsila companys' waterjets.
JB