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Resin and Glass fiber Tissue. The tissue will just hold the resin and give a good seal. Wet the area with resin first..... then lay over the tissue. The tissue does have a certain amount of stretch to it. Easy to join just tear the edges and dab on with resin using . soft brush. Very soft stippling required. The grp Tissue has NO strength to it as is NOT structural just used to get a smoother Finish when Laminating Grp Not Easy to apply but easy to sand off if you make an error.
Now that the self-adhesive vinyl lettering and hull markings are now applied and correctly positioned…😉 I can now spray the lacquer finish on the hull. The gloss black areas will have a number of coats of Halfords clear gloss lacquer and the red ‘anti-fouling’ areas finished in Halfords clear satin lacquer. I started with the gloss lacquer first, so the all the deck area and the red ‘anti-fouling’ areas were masked. As I wanted the white waterline to be sealed with the gloss finish I masked below the line. After a thorough wipe over with some panel wipe the first coat of gloss was sprayed followed by a further two coats at 30 minute intervals. Fortunately it all went on without any runs or blemishes so I left it for a week to thoroughly harden after removing the masking. The black area was then masked from the bottom of the waterline, the area cleaned with panel wipe and sprayed with three coats of Halfords clear satin lacquer. With all the masking removed the boat was them put aside and left for a week for everything to dry thoroughly and then I polished the black area with some ‘T-cut’ polish to remove any surface blemishes and bring it to a full shine. All the hull marking and lettering are now firmly fixed and sealed and I’m very pleased with the final results. The next job will be to spray the deck and superstructure with the BS631 RAF Light Grey and then the majority of the paint process will be complete 😁
Beat me to it, I have used WEP and scrap plastic, to strengthen all joints in a Plastic TID tug, Corvette and my latest build Vosper Gun boat.I used a small jam jar as issued with my toasted tea cake at Costa coffee, just cut up some scrap plastic into jar, pour in enough WEP to cover, seal jar with lid leave over night, then using a cheap brush paint inside and in your case outside joint, after cleaning surfaces first. My TID tug, has stood up to of many a knock, with no leaks so far, apart from when my Brother ran it down with his RC yacht and she turned turtle took on water and down she went , after a quick rescue and trip to park gents to use its hand drier, she was soon back sailing, joints still intact :-)
Almost certainly the culprit. Is this a plastic to plastic joint? Can you add a fillet to the inside of the hull to increase the joint area? If it is all plastic you could remove the paint up to the rubbing strake and add a thin 1mm sheet of plastic all round the hull to seal the gaps. Plenty of MEK solvent will make a strong and watertight joint. I would also scrape off the paint all round the seam and fill with MEK and some dissolved scrap plastic to fill and seal the gap. Dave
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...
[Score: 9/10] 45" Carole Single Propellor Direct Drive to a Volvo car arial motor Powered by Lead Acid (12v) 7Amp/h Batteries Controlled Through mtronics esc ESC - Comments: doubled up the plans motor from a smashed Volvo estate arial motor crew ex star wars characters funnel sealer tube
I have a large 4' Puffer purchased many years ago form Martins Models at an E Port show. Originally I tried lead but it became very heavy to carry. I modified mine by making three large sealed fibreglass containers in side the hull which were open at the base and had open portholes at the top exiting thro the hull sides. I now only need about 1lb of lead plus the 12v 12Ahr battery to ballast. Put the model in the water then add the battery and ballast, the boat sinks to the waterline. Take the battery and ballast out and the boat rises, lift with two straps and all the water drains leaving a light hull to carry. The pic shows the model in its lead ballast days.
Hi Dave, The 1/12 Bluebird is brushless (all running gear from PMB), as it's made from balsa, I've waterproofed everything with sanding sealer inside & out. To be honest I was planning on taking it to quiet stretches of the Leeds/Liverpool canal as I didn't think any scale model boat clubs would want anything to do with my boat, but I will have a look at what clubs there are locally. The 1/4.2 will be IC powered, I want it to reach a scale speed of 300mph so if I can hit 75mph in the real world with it I'll be very happy. I hope if I can keep it light enough a couple of Tiger King S27 Evo's will get me there. I've emailed PMB as they don't have any stock at the moment, to see when they are due some in, but I've not received a reply yet. Plan is to buy 1 engine initially so I can plan the layout & while I'm carrying on with the build I was going to drop it into this eBay hull to see how it performs. I have a couple of Enya 40ss motors, I'm going to try one in the Short Stuff & see how it goes. I can't cope sitting at home watching the telly, I like to keep busy😎 Cheers Wayne
Hi Hugh I do believe Brian used the Graupner water jet unit which had it.s own seals. The model was sold on some time ago so can't check. I will ask Brian when I next see him and update the post. As far as I remember water ingress was not a particular problem. Dave
Well its an original Aerokits Sea Commander and in the timescale available I would forget about stripping off the paint or sealing the inside as it is probably covered with several coats of oil based paint. Sorry I believed you had a brushless motor but yours looks like a standard 550 brushed so will require a brushed ESC, a 15/20amp mtronic should suffice but any similar ESC will be OK. Unless you are intending to run for long periods or race the boat I would leave the watercooling, it's easy to add later if required. Can you photo the inside of the cabin where the motor sits also the outside area where the ply has delaminated. Is there a prop shaft? You need to make sure the shaft and bearings are OK. Looking forward to more pics Dave
Hi aeromodeller Welcome to the site. Sounds like a good project. Delaminated wood is not good so I hope your glue and clamps will fix the problem. Is the hull painted? It is usually best to strip back to the wood and cover with cloth and resin all over plus more resin on the inside to keep the water away from the wood. With your timescale this may not be an option, but you could possibly tissue cover the hull with sanding sealer/dope then repaint. Even a coat of dope on the inside will help. You will need a brushless ESC with reverse. If the propshaft is damaged or you can feel play in the bearings it may need replacing or new bearings fitted to the proptube. The rudder will need a servo and you should be good to go. Not sure of the price of crystals but you can buy 2.4Ghz cheap combo set for about £20 and even the short range will not be a problem for a model boat. A pic will allow more specific support for the model Dave
Hi Javro. I tend to use light coats when painting but rattle cans dispense a volume of paint quite rapidly unlike an airbrush that is far more controllable. The paint system on the roofs is three coats of sanding sealer, one coat of grey primer, one initial coat of white primer and a further one over the additional details, and then two coats of gloss. At all stages the coats are flatted with wet & dry and there's usually at least a couple of days between coats and any solvent completely flashed off. The Halfords white primer was definitely the cause as it was dispensing more solvent than pigment and that, I believe, is what caused the underlying layers to split. Perhaps I'll look to getting a decent airbrush before I tackle another project. All part of the learning curve as they say !