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Model Boats Website Team
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Hi Andy Slightly more power with a brushless motor is a no go!!! Brushless motors the same size are far more powerful !!! But, the about same RPM a Turnigy L5055-700kv(500 rpm more on a 4S(14.8 volts) Lipo battery would be a good replacement. Mind you at 1600 watts( about 2 and 1/4 HP) these will used in a large boat like a 46" Vosper Crash Tender or a 46" Sea Queen!!! My move into brushless motors I have found that they are 7 to 10 times more powerful and equal to, if not better than the old IC motors!!! My Sea Hornet, Sea Commander and Huntsman run brushless motors . My Crash Tender is getting the 5055 motor, so it will be interesting to see what it will go like!!
Hi All I was told to use plumber's tap silicon grease, which I have used for 3 years and only regreased once each year. I have added oiler/grease tubes to my rudders as well. Also you can get a silicon spray like WD40, but, with the silicon spray it crawls up the shaft. With the shaft out and the tube cleaned out(pipe cleaner works well for this) a shot of silicon grease in each end of the tube(only small amount). Hold your finger over the other end and install the shaft, this stops the grease coming out as the shaft comes through. A shot of silicon spray down the oiler tube and seal silicon fuel tube sealed off at one end. Canabus
Hi Pilot I have the Precedent Huntsman 34" hull with the 3648-1450kv, 100 Amp car ESC, 2 blade 40mm 1.4 pitch CNC prop and at present only running on a 3S 5800mah Lipo. I am still working on the cabin and that windscreen. Installed the front, rear, toilet and kitchen windows and frames today. The boat is very quick in the 35-40KPHour mark, so it's not slow. Canabus
Hi Pilot If you are using 540 can size (35-36mm brushless motor) a 3639-1100kv 800watts, 3648-1450 1600watts or a XK 3674-1900 1769 watts. All run on 100Amp ESCs, but check the maximum voltage they handle. I use car ESCs with the electric fan on top because they run cooler at slow speeds and no water plumbing required. The same with the motors no cooling. Props for these motors 37mm 2 blade or 40-45 mm 2 blade. If you go for a larger motor for a larger prop, a L5055-700kv 1600watts same ESC, but, start with a 2 blade prop about 52mm. Battery a 3-6S 5800mah or more with a C rating of 40 plus. I have used the 35mm motors in 34 to 40" boats, but, for my 46" Vosper Crash Tender I am going to the 5055. To large a prop will cause over heating of the ESC, battery and Motor. A in line amp meter(Hobbyking 9598000004-0) is the one in use. It reads the maximum amps, so for run speed amps slow speed up to maximum as a hit the throttle hard will give you maximum amps. Canabus
Hi Hope you can get spare flex drive cables as Hobbyking do not sell spares !!!! Mine is sitting in bits and the boat is getting converted into inboard with a 4mm flex drive with the original motor or the upgrade motor a 2836-3700kv on 4S. Canabus
Hi What type of props are you using(size and number of blades). I see your basic problem is under powered motors and a very heavy battery. I made the big switch over three years ago from brush to brushless motors and to Lipo batteries. With the help on the forum and club members it was a learning curve, but, I would not go back. A 5800mah Lipo battery is in the weight of 450 to 570 grams and would give you a good 1/2 hour run time. A good balance charger and safety bag are the main requirements, also maximum charging for the 5800mah battery is 5.8 Amps(same as the old Nicads). Also a low voltage battery alarm. Your 600 motors can draw up to12Amps !!! Replacement same size motors for your mounts would be 35mm brushless motors, but, you will require two ESCs with a Y connector to run on the same throttle channel. Replacement brushless motors are far more powerful e.g. a Hobbyking 3639-1100kv with a 60Amp ESC on a 4S 5800mah Lipo Battery is 800watts and with two in your boat is 1600 watts!!! Your old motor would in the 100 watt each mark !! I have the same size crash tender, but, with a single brushless motor. I have all the order numbers for the motors etc. and a setup the ESCs if your require. Canabus
HI Richard I drop my prop angle to 9 and 1/2 degrees on my Precedent Huntsman 34" after removing the old IC motor. Running a 35 mm brushless motor on 3S and it's very quick!! More a speed motor than a motor cruiser. Canabus
Hi Capt Larry I have used the Turnigy and Compact Zippy ones from Hobbyking with no problems for the last three years. Note only charge them at the maximum current equal to the battery capacity, eg 5800 mah = 5.8Amps. Lower Amps is better. Canabus
Hi I use a Turnigy 180Amp watt meter and power analyzer(part No.9598000004-0) 0-60 volts , size 85 x 42 x 25mm, 82 grams. Requires your battery connectors. Use it in line with the main battery on board the boat. We used it on my mate's Spearfish and got 72.88 Amps on a brushless motor at 37 KPH. Canabus
HI AndyG009 The steep angle was to get the diesel motors into the boat. On my Precedent Huntsman I decreased the drive line angle both at the prop and motor ends. The 35mm brushless motor was less diameter than the flywheel of the IC motor. I can still fit a 45mm prop with 5mm clearance, but, using a 40mm 2 blade. I quick test on Saturday and the boat has no problems with prop torque at full speed. I made a little larger rudder, mainly a bit deeper. Rudder control is very good. Canabus
Hi All Still working on the windscreen. Ran the boat, well the hull, after moving the battery forward on the battery mount rails. Only used a 3S battery, but it sat on the water level at full speed. Turning was very good. The CG is 350mm from the stern if that help any of you setting up a Huntsman. Canabus
Hi All Started on all the side, rear and front windows. Installed all the running gear and radio. The windscreen is going to be fun to make in two pieces!!!! May drop it in the water tomorrow for a ballast test and a short run without the cabin. Canabus
Hi All The Flysky and Hobbyking Turnigy IA6 are the same beast. The plug on the back is for both trainer link and software update via special cable. The only problem is the manual does not tell you to hold down the cancel button for about 5 seconds to save your settings. Also you can get telemetry sensors for temperature, voltage and rpm from the receiver back to the transmitter. Canabus
Hi Novagsio The only place that my help you out is Westbourne model.co.uk, but, they sell to full kit. May sell the fittings kit. The original handrails from my Precedent fibreglass hull are total rubbish, but, I only got with my second hand unfinished boat the air scoops. So I plan on making the hand bow rail and windscreen. My boat is in the BUILD BLOGS on the site. Canabus
Hi Guys Well today is the day. CG of the boat at 410mm from the bow and it sits in the water on the waterline. Cruised of at a slow pace with camera man taking pics. Up to 1/3 throttle and up on the plane, nice smooth turns with the rudder. Water flying all over the place!! Up to 1/2 throttle and sitting up nice on the plane. The boat handling as smooth as butter, the spray of water from the boat is about the same as one with spray rails. Pop up to full throttle and well pass scale speed, but by this time the camera man was not keeping up to the job. Totally happy with the boat, but still requires a few bits to finish the job. Enjoy the pics and happy boating. Canabus