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Liked Motor Type and esc selection 5 months ago
Liked Joysway Focus 3 7 months ago
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Australia
Recent Posts
📝 Electronic Speed Circuit (ESC) with Battery Eliminator Circuit
2 months ago by 🇦🇺 BobbyN (
Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 52 Views · 5 Likes
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Hi All
Thought I would make a contribution to this topic. Attached are two basic circuit diagrams that our Association uses. The first one shows a single battery powering a single screw boat using an ESC with a BEC. The secong diagram shows a twin screw boat powered by two batteries in parallel. We use channel 4 because we have an upgrade to the flysky i6 which creates a twin throttle.
Hope this contributes.
Thought I would make a contribution to this topic. Attached are two basic circuit diagrams that our Association uses. The first one shows a single battery powering a single screw boat using an ESC with a BEC. The secong diagram shows a twin screw boat powered by two batteries in parallel. We use channel 4 because we have an upgrade to the flysky i6 which creates a twin throttle.
Hope this contributes.
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MouldBuilder
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📝 Krick "Paula IV". On how to glue the Hull to the Deck ABS.
2 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 47 Views · 3 Likes
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Bruce
I can only speak for MEK which I blend myself with some dissolved ABS. I have used this mix for a number of years. You only get about 2 mins until it grips maybe even less time depending on the weather. However, it takes a few hours, at least, to achieve good strength. The result is that the join is truly welded and in many cases one of the components fails before the actual join.
I can only speak for MEK which I blend myself with some dissolved ABS. I have used this mix for a number of years. You only get about 2 mins until it grips maybe even less time depending on the weather. However, it takes a few hours, at least, to achieve good strength. The result is that the join is truly welded and in many cases one of the components fails before the actual join.
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📝 Styrene glues???? on Styrene boats
2 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 41 Views · 6 Likes
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Hi
I prepare my own glue using MEK with some ABS dissolved in it. It is a bit messy to prepare but it securely welds the two pieces of plastic together. I have used this for many years, prior to that I used Acribond 120 which gave good but was very thin and relied on the two parts fitting together very well. MEK with ABS dissolved makes the glue thicker and fills any small gaps.
I prepare my own glue using MEK with some ABS dissolved in it. It is a bit messy to prepare but it securely welds the two pieces of plastic together. I have used this for many years, prior to that I used Acribond 120 which gave good but was very thin and relied on the two parts fitting together very well. MEK with ABS dissolved makes the glue thicker and fills any small gaps.
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📝 LEDs
2 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 39 Views · 2 Likes
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You will need a resistor in series with the LED. The size of the resistor will depend on the current rating of the LED. Just use Ohms Law to work out the size of the resistor. In my experience you certainly do not have to be exact with the resistance value but if you go too low th LED will eventually fail.
Bob
Bob
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Colin H
📝 Servos going crazy
2 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 59 Views · 3 Likes
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We, a few fellow modellers, had an issue like the one you described. We bought some ferrite rings and looped the the servo wire through the ferrite ring 3 times. This stopped the interference in our case. You end up with a short servo lead however.
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📝 Has anyone any experience of using a Dremel scroll saw?
4 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 74 Views · 2 Likes
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I have had this tool for 6 years and it has been excellent. It is great to be able to remove the saw from the bench. However, just check where you will be attaching it to the bench as it may not fit. It needs a table top for the clamps to work and may not fit where you have drawers or if the frame of bench is too close to the edge of the table top. Unlikely to be an issue but worth checking.
A Few years ago I had issues with getting the dremmel blades and could not use my saw for a while, I now ensure I have plenty of spares. I use the saw mainly for HIPs and it does a great job.
A Few years ago I had issues with getting the dremmel blades and could not use my saw for a while, I now ensure I have plenty of spares. I use the saw mainly for HIPs and it does a great job.
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📝 Motor Type and esc selection
5 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 23 Views · 2 Likes
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Lew
Thanks for the feedback, the battery part of the wiring diagram should be only be taken as a guide. The battery comfiguration can vary. I have up to three batteries in parrallel as I would prefer to use batteries instead of lead for ballast. Certainly on many of my boats I only use a single battery to run twin screws. I should have indicated the battery side of the diagram is only a guide when posting.
Thanks for the feedback, the battery part of the wiring diagram should be only be taken as a guide. The battery comfiguration can vary. I have up to three batteries in parrallel as I would prefer to use batteries instead of lead for ballast. Certainly on many of my boats I only use a single battery to run twin screws. I should have indicated the battery side of the diagram is only a guide when posting.
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📝 Motor Type and esc selection
5 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 30 Views · 5 Likes
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The attached wiring diagrams are used within our Association for single and twin screw boats. Hopefully they will be helpful if used with Lew's diagram
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📝 Motor Type and esc selection
6 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 56 Views · 2 Likes
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Duck
Sorry, the readings were taken in a test tank. The boat is pushing against one end of the tank with both motors running full speed. The 2.5 A is total current from the battery. The actual reading when the boat is on the pond will be less than this as the boat will be moving. In the test tank it is trying to accelerate and so will be drawing additional power. By way of information the readings wre taken on a 72 scale WW2 Captain Class frigate. We have had much the same readings on a 72 scale Modified Black Swan class.
Hope this helps
Cheers
Bob
Sorry, the readings were taken in a test tank. The boat is pushing against one end of the tank with both motors running full speed. The 2.5 A is total current from the battery. The actual reading when the boat is on the pond will be less than this as the boat will be moving. In the test tank it is trying to accelerate and so will be drawing additional power. By way of information the readings wre taken on a 72 scale WW2 Captain Class frigate. We have had much the same readings on a 72 scale Modified Black Swan class.
Hope this helps
Cheers
Bob
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Duck
📝 Motor Type and esc selection
6 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 60 Views · 5 Likes
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Duck
We tend to use a 4mm shaft with a threaded end to take a prop with the small motor (31ZY) I have seen props from 20 to 50 mm used. These work fine. We usually get them from the one boat parts supplier in Australia (Float a Boat) and the brand are Robash (excuse the spelling if req'd) In all situations I have not seen any issues. I should explain that we are a scale model association and so speed is not all that critial. Also we have some members who carefully bend/twist the prop blades and can adjust the speed.
We have tested the motors under load in a boat fitted with twin 35mm props and the currents draw was around 2.5A. We run for an hour on sailing days and a 5 AH Lithium Iron Battery is, I estimate from recharging, about two thirds spent over this time.
Hope this is of some help.
Cheers
Bob
We tend to use a 4mm shaft with a threaded end to take a prop with the small motor (31ZY) I have seen props from 20 to 50 mm used. These work fine. We usually get them from the one boat parts supplier in Australia (Float a Boat) and the brand are Robash (excuse the spelling if req'd) In all situations I have not seen any issues. I should explain that we are a scale model association and so speed is not all that critial. Also we have some members who carefully bend/twist the prop blades and can adjust the speed.
We have tested the motors under load in a boat fitted with twin 35mm props and the currents draw was around 2.5A. We run for an hour on sailing days and a 5 AH Lithium Iron Battery is, I estimate from recharging, about two thirds spent over this time.
Hope this is of some help.
Cheers
Bob
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📝 Motor Type and esc selection
6 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 79 Views · 5 Likes
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In our model boat Association we use 31ZY permanent magnet DC motors 12v 3500 RPM (or you may run it with 6V) which we have found to be very reliable for smaller boats. About 50 of these motors have been motors successfully fitted into members boats with no issues. For larger boats we use an XD-3420 12V (3500 RPM version) again about 35 of these are running in boats within our Association without a problem. For Speed controllers we use the Hobbywing 1060 and we have over 100 of these EScs running with no issue. Albeit we did have one fail when a new member wired it up incorrectly. All items are available through Aliexpress, although other suppliers may have them as well. Hope this is of some help. The items I have indicated are supplied by our Association for members to buy and we have been doing this for over four years now.
Cheers
Bob
Cheers
Bob
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📝 Dragon Force 65 waterproofing
7 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 70 Views · 6 Likes
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The other replies are right on the money with seling the deck eyes etc. The only other thing I can suggest is to ensure the hatch is sealed with PVC tape. I have never had any leaks in my DF 65 after sealing the deck eyes and ensuring the hatch is also sealed. I did a series of videos on perparing the Focus 3 and the approach is exactly the same with any Joysway boat. Here is the link to the channel, hope it helps.
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📝 Twin motors
7 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 91 Views · 2 Likes
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You could look at this previous thread below it may help. I use a dual throttle upgrade for a flysky I6 to control two motors it is absolutely fantastic
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Scratchbuilder
📝 Joysway Focus 3
7 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 32 Views · 1 Like
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Roy
I have been using vaseline on my Focus 2 and 3 for almost a year now and it has not as yet affected the rubber at all. Before this I used vaseline on my DF65 and again no issues. Perhaps the rubber used is more like "o" ring rubber.
But thanks for the reply I will keep an eye on it, luckily if the rubber does become porous, I understand replacements are available.
I have been using vaseline on my Focus 2 and 3 for almost a year now and it has not as yet affected the rubber at all. Before this I used vaseline on my DF65 and again no issues. Perhaps the rubber used is more like "o" ring rubber.
But thanks for the reply I will keep an eye on it, luckily if the rubber does become porous, I understand replacements are available.
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📝 Joysway Focus 3
8 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 68 Views · 6 Likes
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I purchased a Joysway Focus 2 RTR Yacht about 9 Months ago. I upgraded to a Focus 3 about 5 months ago and made a series of videos on how I prepared and rigged my boat. Both boats have been excellent and after preparation both have no leaks at all. Here is the link to the first of three videos.
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📝 Steering competition
8 months ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 42 Views · 2 Likes
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Jerry
We have a steering course in our program and I have attached the relevant sailing instructions. It has proven to be very successful for us. I could provide a copy of the score sheet if you wish.
Regards
Bob
We have a steering course in our program and I have attached the relevant sailing instructions. It has proven to be very successful for us. I could provide a copy of the score sheet if you wish.
Regards
Bob
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Jerry1
📝 Josway Focus 2/3
1 year ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 26 Views · 0 Likes
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Thanks for the help. I will try the DF 95 bearings, the DF 65 definitely do not fit. However, the local supplier is out of stock.
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📝 Josway Focus 2/3
1 year ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 31 Views · 0 Likes
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I have tried a set of DF 65 bearings and they definitely do not fit so it could only be the DF 95 bearings or the Focus has its won unique size. I suppose they could also be a bearing used in their power boat range. It is frustrating that Josway have not replied to email enquiry.
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📝 Josway Focus 2/3
1 year ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 44 Views · 0 Likes
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Eduard
Thanks for the suggestion, I have since got hold of some DF65 bearings and they DO NOT fit. I am working on the principle that Josway would have tried to minimise the number of different parts so will get some DF 65 bearings.
Thanks for the suggestion, I have since got hold of some DF65 bearings and they DO NOT fit. I am working on the principle that Josway would have tried to minimise the number of different parts so will get some DF 65 bearings.
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📝 Josway Focus 2/3
1 year ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 75 Views · 0 Likes
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Hi
I am hoping that one of our members can help out. If you sail either a Josway DF 65, 95 or Focus there are two bearings top and bottom of the vang. You can buy spares for both the 65 and 95 but the supplier in Australia has advised they are not available for the focus. Does anyone know of a spare or if the 95 bearings will fit.
I am hoping that one of our members can help out. If you sail either a Josway DF 65, 95 or Focus there are two bearings top and bottom of the vang. You can buy spares for both the 65 and 95 but the supplier in Australia has advised they are not available for the focus. Does anyone know of a spare or if the 95 bearings will fit.
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📝 Dual independent speed control set up
1 year ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 67 Views · 0 Likes
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Derek
The throttles are 3d printed. The set I posted a photo of is about 6 years old and still going strong, albeit the paint on the handles could do with a touch up.
I have found the system to be excellent. A number of people in our Association prefer to us the left and right gimbals because they have had considerable experience using them to control port and starboard motors, but a number of our members now use the dual throttle and swear by it. They are just a replacement gimbal, so 4 screws and then plug in is all that is needed.
If you want one my grand daughter used to sell them on Ebay, she is just finishing her HSC so has been fully committed and I uderstand has taken down the add. Unsure if she has any left but if you like I will chase for you, just give me your email.
The throttles are 3d printed. The set I posted a photo of is about 6 years old and still going strong, albeit the paint on the handles could do with a touch up.
I have found the system to be excellent. A number of people in our Association prefer to us the left and right gimbals because they have had considerable experience using them to control port and starboard motors, but a number of our members now use the dual throttle and swear by it. They are just a replacement gimbal, so 4 screws and then plug in is all that is needed.
If you want one my grand daughter used to sell them on Ebay, she is just finishing her HSC so has been fully committed and I uderstand has taken down the add. Unsure if she has any left but if you like I will chase for you, just give me your email.
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📝 Dual independent speed control set up
1 year ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 75 Views · 0 Likes
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Hi
Here is a simple wiring diagram for twin throttles that I use. Also I use an upgraded twin throttle gimbal for control hence it runs on channel 3 and 4.
Here is a simple wiring diagram for twin throttles that I use. Also I use an upgraded twin throttle gimbal for control hence it runs on channel 3 and 4.
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📝 Modified Black Swan Hull
2 years ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 49 Views · 0 Likes
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Brilliant thanks heaps
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📝 Modified Black Swan Hull
2 years ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 54 Views · 0 Likes
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Does anyone know of manufacturer of a Modified Black Swan Class Sloop hull in 72 scale.
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📝 RN Island Class Patrol Vessel
2 years ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 45 Views · 1 Like
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Doug
Thanks for the info, however, through an Australian Navy contact I was able get some info from an officer who served on exchange in HMS Orkney and they are "slip tank stowage" for the outboard fuel.
Appreciate the help.
Regards
Bob
Thanks for the info, however, through an Australian Navy contact I was able get some info from an officer who served on exchange in HMS Orkney and they are "slip tank stowage" for the outboard fuel.
Appreciate the help.
Regards
Bob
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dave976
📝 RN Island Class Patrol Vessel
2 years ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 55 Views · 0 Likes
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Thanks much appreciated. I have some photos after they were transferred to the Bangladeshi navy and they still have the same equipment/fitting.
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📝 RN Island Class Patrol Vessel
2 years ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 81 Views · 0 Likes
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I need some please to idenify the fitting or equipment circled in the photos. It is off an Island Class fisheries patrol boat. I can make out the general shape but unsure of exactly what it is and its purpose.
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📝 Suppliers of Boat Electronics
2 years ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 92 Views · 1 Like
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Hi Our model boat association has been using Hobbywing 1060 speedcontrollers for a few years. Altogether we have used over 40 of them in last 3 years and have not had an issue at all. Like Ian, We also use Aliexpress. A bit slow as far as postage is concerned but the price is usually excellent.
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IanTurk
📝 Glue for ABS - Krick Paula Work Boat
2 years ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 79 Views · 2 Likes
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I use MEK with some ABS dissovled in it. It melts both parts and fuses them together. It has proven excellent with 3D parts.
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jbkiwi
📝 MV VELARDE
2 years ago by 🇦🇺 BobbyN ( Petty Officer 2nd Class)
Petty Officer 2nd Class)✧ 54 Views · 0 Likes
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In Australia Southern Cross Models do a 72 Scale Velarde hull.
Recently a building buddy and I have got a hull each and we have just started. Southern Cross do a set of plans in 72 scale which are quite good. The link for Southern Cross models is
Recently a building buddy and I have got a hull each and we have just started. Southern Cross do a set of plans in 72 scale which are quite good. The link for Southern Cross models is
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