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Fleet Admiral)
Liked Sealing Joints 11 months ago
Liked Sealing Joints 11 months ago
Liked Minature action camera 11 months ago
Liked Heat Sinks 12 months ago
Liked Heat Sinks 12 months ago
Liked Heat Sinks 12 months ago
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📝 Sealing Joints
11 months ago by 🇬🇧 Spence (
Petty Officer 1st Class)
Petty Officer 1st Class)✧ 10 Views · 0 Likes
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Thanks Guys, Spence.
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📝 Minature action camera
11 months ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 50 Views · 1 Like
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Love the video, where do you get the cameras from? Spence.
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📝 Sealing Joints
11 months ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 65 Views · 3 Likes
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What do the forum use to seal joints in wooden boats? I have been using JB Weld but it's quite expensive and you don't get much. I always use woodscrews when fitting joints in tongue and groove floorboarding that I use, (I over ordered when repairing a floor so I thought I'd try and make some boats with the excess). I've read on the forum that PVA glue is used quite a lot and reasonably priced. Cheers Spence.
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📝 Heat Sinks
12 months ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 29 Views · 3 Likes
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Thanks Guys I will try that, Spence
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📝 Heat Sinks
12 months ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 44 Views · 5 Likes
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One thing I have noticed with my prop. shaft assembly is the grub screws don't hold very well. I managed, when fiddling about, I could pull the coupling off with the grub screw tightened up. I am always careful when tightening not to tighten too much as I once stripped the threads on an alloy coupling. Anyone else seen this problem? Cheers Spence.
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📝 Heat Sinks
12 months ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 61 Views · 4 Likes
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Must say the prop. tube is glued in, can't replace, Spence.
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📝 Heat Sinks
12 months ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 61 Views · 5 Likes
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Just tried my set-up again today without the prop. shaft connected and everything worked well, motor remained cool throughout, no problems. Will now try with everything connected up. I've noticed where the prop. shaft comes out of the tube at motor end, it is at a slight lateral angle although it turns smoothly. Correspondingly the motor will have to be too. I haven't strained it in any way, I'm guessing it has been supplied to me like this, bit strange. So far so good. Thanks Lew and Chris, you were right, cheers Guys, Spence
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📝 Heat Sinks
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 67 Views · 4 Likes
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Btw Lew thanks for the illustrations, Spence.
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📝 Heat Sinks
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 67 Views · 3 Likes
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Lew, I was going to use the wooden coupling as a temporary measure to get every thing aligned then swap over to the flexible one as permanent. Sorry to have misled you there 🤣. I've just ordered a solid metal one. Spence.
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📝 Heat Sinks
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 58 Views · 3 Likes
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I tried making a solid coupling out of wood but with the motor being 3.2mm and the prop shaft being 4.0mm couldn't get the hole straight. Don't think the Dumas dog bones are available here in the UK. They have a solid metal coupling to get things aligned where I shop, but it is too long for my design. I was under the impression, rightly or wrongly, that you could have a slight mis-alignment with a flexible coupling. Maybe you could advise, or tell me what else I may use. Spence.
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📝 Heat Sinks
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 63 Views · 4 Likes
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Hi Lew, it isn't at the moment, had to take everything apart after the UJ came adrift and the motor overheated. Will post photo when everything assembled again, but I'm going to be using a Microflex coupling. The issues with the motor overheating began when I was using a single UJ. Hope this clarifies. Maybe I'll wait till everything is put together again before posting further. Thanks for your trouble thus far. Spence.
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📝 Heat Sinks
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 70 Views · 3 Likes
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The boat is a 1.5 Kg catamaran and the prop. is 25mm, 3 blade, sorry don't know the pitch. Meant to say my prop "shaft" is the same angle as motor about 15 degrees. Thanks for your patience Guys, Spence.
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📝 Heat Sinks
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 68 Views · 3 Likes
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Thanks for the replies, will photograph my set up. The motor is a MFA Tornado 500 and has about a 15 degree tilt downwards and the prop. is the same angle towards stern. It is a 4mm greased shaft through a 4" tube. At the time I was using a Hobbywing 60a ESC.
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📝 Heat Sinks
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 78 Views · 4 Likes
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Does anybody on the forum think that heat sinks for motors is a good idea? My motor (MFA Tornado 500) gets rather hot so I invested in a couple of combined heat sinks and fans, unfortunately both of which block or partially block the vents on the motor when either is in use. I've thought of a water jacket but that wouldn't help when the boat is out of the water whilst testing on the bench. Anyone had any experiences?
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📝 Motor burn out?
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 43 Views · 4 Likes
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Thanks Lew I don't think I have space for two UJs but your advice and Len's have helped immeasurably. I was starting to get quite frustrated this afternoon when I realised that the reason for the shaft coming loose was because everything was slightly out of line. I will get a flexible coupling of some sort. Thanks again, Spence.
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📝 Motor burn out?
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 48 Views · 5 Likes
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Hi Lew, the prop. shaft does turn smoothly and I did test out of the boat. Propeller is 25mm and Iam testing on a test bench out of the water. Battery is a NiMh 7.2v 4500 mAh. Using just one universal joint. I am posting a photo of my set-up although I am now using the Quicrun ESC. and the different battery. Cheers Spence.
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📝 Motor burn out?
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 74 Views · 3 Likes
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I have changed my ESC for a Quicrun 1060 60amp and have tried it with my Torpedo 500 motor. Initially it worked great but when I stopped, the motor started to smoke a bit. Also the Universal joint came apart. I realise I am a pure novice when it comes to boat electrics etc. but what am I doing wrong? Is the motor shot and have I not tightened the grub screw sufficiently on the UJ? I find it difficult to tighten too much in case I break the allen key. Is there too much power in the ESC? I was using an Mtroniks 15a. Cheers Spence.
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📝 ESCs
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 28 Views · 5 Likes
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Thanks for your reply Chris F. I am thinking of NiMH batteries for my boat which is a kind of catamaran. I based it on the boat featured in the film RED with Bruce Willis, a Daytona Eliminator (a bit ambitious for a first model) and I must post a photo soon. It weighs about 2.5kg and is powered by (but not at the moment!) a Torpedo 500 motor. Spence.
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📝 ESCs
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 30 Views · 5 Likes
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Thanks Alessandro for all the information you sent me. My ESC is a Mtronics Viper Marine 15a not 25 as I previously posted and is the plug 'n' play version. This model supports 12v apparently, after looking at the spec. sheet. I've just tried a 12v AA pack(all I have at the moment as well as 6v) and the motor briefly fired up then nothing (servo has always worked). I am thinking of a NiMH pack as I don't think the boat will handle the weight with Lead Acid( boat only weighs 2.5kg all told). Thanks for you continued interest, I appreciate it. Regards Spence.
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📝 ESCs
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 44 Views · 5 Likes
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Thanks guys for your informative replies. I have a similar 12v battery pack that I'll try but I think I'll go get a Lead acid one as Allessandro SPQR suggested. I checked all the connections with a mutimeter and they tested good but the motor was only receiving 0.5 - 0.7v at full throttle so you are all spot on with your information. I can't thank you all enough because I was considering swapping out the ESC for another one. Spence.
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📝 ESCs
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 32 Views · 2 Likes
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Sorry guys I think it's a 15a ESC. Spence
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📝 ESCs
1 year ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 67 Views · 4 Likes
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I'm experiencing problems with an Mtronics Viper Marine 25a (model without push button). It worked perfectly out of the boat but now in the boat the motor doesn't work. I had to remove the Tamiya connector for battery as it wasn't compatible with my battery pack (photo enclosed) which apparently invalidates the warranty. The red and green lights go on as they should and have checked wiring with a meter. Can anyone please help? Spence.
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📝 Varnish
2 years ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 47 Views · 1 Like
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Sorry, should have said Humbrol Enamel Paint
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📝 Varnish
2 years ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 47 Views · 4 Likes
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What varnish for Humbrol Paints guys? I am using this and another oil based paint. I am confused as to what to use because I have read you can't use some varnishes over certain types of paint. Polyurethane, acrylic, water based - well muddled! Also which brands for non-yellowing please? Interested to know ones you have had experience of. Thanks for any replies as always. Spence.
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📝 Jet Pump Thrusters
2 years ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 24 Views · 0 Likes
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Thanks everyone for the important knowledge you have given me. Cheers Spence.
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📝 Jet Pump Thrusters
2 years ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 73 Views · 3 Likes
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Hi Guys and a Happy New Year to all. I am using an ordinary electric motor on my current project but I, at one time considered a Jet Pump Thruster. Wondered if anyone has any experience of them as I heard they can suck debris. I said in an earlier post I was using oil based paint but had found it difficult to source amongst all the water based paint, which apparently you can't paint over oil based and vice versa, or so I've read. Interested to hear any views the forum has. Cheers Spence.
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📝 Paint
2 years ago by 🇬🇧 Spence ( Petty Officer 1st Class)
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My word Colin you certainly have a fleet there and some interesting tools. To ChrisF, my Dad painted the house with International paint. The gloss and colour lasted many, many years longer than anything else we used. A word about modern water-based paint and the disappearance of oil based, my Dad still, when he was alive, still bemoaned the loss of lead paints. He'd be about 100 years old now and was walking along the beach onr day when he saw some guy attempting to remove paint from the bottom of a boat. He said "you'll never get that off lad, it's white lead." Cheers, Spence
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📝 Paint
2 years ago by 🇬🇧 Spence ( Petty Officer 1st Class)
Petty Officer 1st Class)✧ 59 Views · 4 Likes
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Thanks Guys and very interesting, do you know Colin, before I bought any paint I toyed with the idea of car paint, it should stand up to anything the elements could throw at it. I have been using Rustins Shellac Primer so thanks to TerryH for your input. Be interested in looking at all the paints mentioned so thanks again Guys, Cheers, Spence.
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📝 Paint
2 years ago by 🇬🇧 Spence ( Petty Officer 1st Class)
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I'm using Humbrol paint and primer at the moment but can't help wondering if you could use
just a good quality household paint considering the price and amount you get with Humbrol. I'm a little out of touch with this really, my father was a painter and decorator back in the day and what he would have said about water based paint being used outside I don't know yet there seems to be a lot of it out there. Please tell me what the forum use for your boats, I will be most interested. Cheers, Spence
just a good quality household paint considering the price and amount you get with Humbrol. I'm a little out of touch with this really, my father was a painter and decorator back in the day and what he would have said about water based paint being used outside I don't know yet there seems to be a lot of it out there. Please tell me what the forum use for your boats, I will be most interested. Cheers, Spence
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📝 Battery Voltage.
2 years ago by 🇬🇧 Spence ( Petty Officer 1st Class)
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Thanks Colin and all you guys for the very detailed explanations. I particularly appreciated the diagrams from AlessandroSPQR but all you guys are so helpful. What would I do without you all? Cheers Spence.
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