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>> Home > Tags > spray

spray can
spray paint
spray rails
Flytec HQ2011-1 by Mids-Phil Petty Officer   Posted: 7 days ago
[Score: 4/10] 18" Flytec HQ2011-1 Capable of 10mph and a runtime of 15mins Twin Propellors (2 Blade S Type) Geared Powered by NiMH (9.6v) 1Amp/h Batteries - Comments: I was feeling bored and saw this cheap Chinese toy boat advertised on t'internet. As I say it was cheap but it did have something of a passing resemblance to an Aquarama.... so I ordered one and when it arrived it really didn't look too bad. The down side was the radio gear was 27MHz and comprised just two forward and reverse switches to give forward, back and turn functions, but with no variable speed control. But then I wasn't expecting much anyway. So opening it up the innards were a doddle to remove and were replaced with a 2.4GHz receiver, esc, servo and rudder assembly. Thought about trying to fit water cooling but there really was no signifficant heat generated so it didn't seem worth it Photos seen elsewhere show the boat to plough pretty inelegantly through the water so spray rails and a couple of strakes were fitted to the hull to hopefully improve things in that regard. Anyway it's all back together now with everything working just fine, but I haven't had a chance to put it in the water yet (well it's been in the bath to make sure it floats but that's all) Looking forward to taking it out when the opportunity arises. In the meantime it's looking good on the shelf in the summerhouse and I am looking for the next project. I have to say that I have no illusions about my own abilities and I am totally in awe of the builds seen here. Nobody told me this would be addictive!

Sea Queen - strakes by BOATSHED Fleet Admiral!   Posted: 11 days ago
Have you got any pictures of these triangular spray rails?

Sea Queen - strakes by onetenor Fleet Admiral!   Posted: 12 days ago
I found when fitting spray rails to use triangular stock like trailing edge section for aircraft wings. It looks neat and bends more easily than square stock.Fitted thin edge up the right angled face forming the deflecting face. Filled and sanded it blends well into the hull. Maybe not true scale but looks nice. It comes in many sizes and suppliers.SLEC is one for starters and Hobbies is another. Balsa Cabin another. Just loads if you use uncle Google.👍

Sea Queen - strakes by DodgyGeezer Commander   Posted: 13 days ago
The principle is simple. Fluid flowing over a surface tends to stick to it (Google Coanda Effect). It's worse at the low Reynolds numbers that models work at. The result is that water displaced by the boat at speed tends to flow up the sides of the hull, sticking to them, and can even pour onto the deck. This slows the boat down and can swamp it. If you have a sharp chine, you can force the water to move away from the hull at the discontinuity, because it can't easily flow around a sharp angle. Ideally, you can deflect it downwards and get some lift, helping the boat onto the plane. So a lot of models have small rails along the chine, shaped to deflect the water downwards a bit. This is what many of the Aerokits models have. Deep Vee design relies on these a lot - the bottom of the hull has a series of parallel spray rails so that as the boat rises in the water the spray is deflected downwards by each rail in turn and an ever-smaller part of the hull bottom is wetted - reducing drag a lot. But the Sea Queen is not a Deep Vee, and doesn't need more that the one set of rails along the chine. Deep Vee spray rails can also help to cushion the shock when a boat drops back into the water after leaving it - but that's more useful in full-size practice rather than models....

Sea Queen - strakes by vk6tnc Seaman   Posted: 13 days ago
I am about to start a Seaqueen build, as a complete novice, can anyone expand on the spray rail concept please?

Keel by Joe727 Fleet Admiral!   Posted: 14 days ago
Printed out the frames /ribs drawings and outlined each in orange so I could easily see the correct lines. Cut those out and pasted to some plywood. The plywood is Baltic Birch 1/4" -5 ply, very nice quality that I get from a local woodworking supply store. It's a bit nicer than from the local warehouse hardware lumber yard, but that would work also. Used some spray rubber cement, sprayed only the paper back and stuck on the plywood. Spraying just one surface allows quick removal of the paper once cut. I don't have a bandsaw of scroll saw, so I use a sabresaw/hand jigsaw mounted upside down on a surface that secures to my drill press. Works pretty good. My shop is so tiny that I just don't have a space for larger tools. Maybe someday. Keel board was glued up, will show more tomorrow on that. Joe

IRC 88 stock maritime (robbe sirius) by Smaragd Lieutenant   Posted: 21 days ago
refitted Robbe Sirius IRC 88 (by stock maritime) completely new electronics and fittings, resprayed in 2k polyurethane topcoat

DMI 'Pirat" by Smaragd Lieutenant   Posted: 25 days ago
[Score: 7/10] 22"/1000g DMI 'Pirat" - Comments: Classic modell, in the 70's sold under the name DMI pirat. a full wooden sailboat without RC controls. the keel was extended to improve stability. In the 90's the wooden strips from the hull were so dried out, that I had to fill it complete with epoxy and sprayed the uniform 'baby blue'color. After a long period in the attic , it saw daylight again and the sails needed to be replaced. Now it is a static model with sailing capacities.

IRC 88 robbe sirius by Smaragd Lieutenant   Posted: 25 days ago
here is my Robbe Sirius, the Stock maritime tuned version. I traded an iphone 5c for this model. it was in a used state without any working electronics. Completely removed all electronics, stickers and rigg and started with sanding. resprayed the hull in oyster 'pearl metalic' and started building up with new fittings , electronics etc Sails like a beauty !

Holy SMOKE !! Video, Tin Can Madness by RNinMunich Fleet Admiral!   Posted: 28 days ago
Hi Joe, When you click on the Media File icon have you ever noticed the [Download] button in the top left corner of the media window!!?? 😲 Click on that and you are given the choice to Open or Download the file 😉 BTW: to answer your question above - No scale railway at all! I intend to use the loco smokers in RC conversions of 1/350 scale plastic navy ships, such as; HMSs Ark Royal, Colossus, King George Fifth, Prince of Wales, Exeter, and KMSs Bismarck and Graf Zeppelin. As well as RMS Titanic and my 1/128 HMS Belfast and Graf Spee. Two more perhaps for my Southampton tug. Have used them in the dim and distant past for my 1/72 scale RN destroyer. Built a little RC pulse decoder using CMOS chips followed by a transistor driver to switch a relay supplying the smoker coil. See pics of self etched decoder board. The other three outputs are for various lighting effects and destroyer 'Whoop whoop' siren. 30 years old now and still going 😊 The smokers work pretty well just using the capillary action of the thin glass feeder tubes. So no wick to come into contact with a a hot wire coil 😊 They were mounted on a bridge across the cap of a large spray can which I used as the oil tank. Exhaust used the chimney effect of a 10mm alu tube running up the funnel. I'm also still pondering how to turn the usual white steam/smoke black! Cheers, Doug 😎

Fitting the rubbing strakes. by RNinMunich Fleet Admiral!   Posted: 1 month ago
Nice one 'Cyril' 👍 Used much the same technique for the spray rail repairs and replacements on my PTB 109 restoration. Works a treat don' it. Pics show the before an' after. Following the build with great interest, as I also did the Fire Boat Rob. Great stuff. Keep it up. Cheers Doug 😎

Propshaft Lubrication by TheBlacksmith Chief Petty Officer   Posted: 1 month ago
You can still get greases that are applied in liquid form but they now tend to be in spray form. I personally do not use silicon oil or grease, it is fine until you need to repaint your boat, it forms a film that is almost impossible to remove, even cellulose thinners has no effect and any paint applied fish eyes and separates, there are dedicated removers but we tried one on a contaminated bike frame which had been blasted, with poor results we had to treat it several times and had to reblast it, we discovered silicone grease had been used in the bottom bracket. Keep silicone away from any surface you may need to paint.

Paint for Thames River Police Boat. by robbob Fleet Admiral!   Posted: 1 month ago
Hi Haverlock. That's not a bad idea, and they're only in Wapping so a visit isn't out of the question either (I'm in North West London). I've just sprayed the hull with grey primer, so it's time to make a decision 🤔 Good suggestion👍 Thanks. Rob.

Crack in seam Repaired! by figtree7nts Fleet Admiral!   Posted: 2 months ago
Captain's Log: Cracked seam Update! She has been sitting in the Domesticated Test Tank. For 20.0 hours and she is dry as a bone!😁😁😁 Eureka, Tug Brooklyn is now repaired! Now all I have to do. Is Spray her bottom! And just a few electrical repairs. And she'll be ready for her spring Maiden Voyage! Long awaited but, patients is a virtue!👍

Hull sprayed by Dick Sub-Lieutenant   Posted: 2 months ago
My son has finished filling sanding priming then spraying in 2 pack. See photo smashing job, over the moon.l