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I found two pics of my Sea Hornet engine mount. The second pic shows the cutout of the keel and the simple home made L bracket for the engine mount. The one in the Hobbyking drive line kit I did not like, but, the engine bolting to the motor is great. No top bearing, but, I have not had a problem with it. Added tap silicon grease on installation.
Dave M is right about lowering the prop angle and motors. My Aerokits Sea Hornet has only 10mm clearance to the top of the prop and I cutout part of the keel to lower the motor. I installed a 1900kv 28mm brushless motor, 30mm 1.4 pitch 2 blade brass prop with a 2650mah 3S behind the last frame with the rudder servo parallel to the transom. Added a small bit of lead under the front passenger seat to move the CG forward. Very quick little rocket at full throttle.
Hi Sonar I have used both in boats and with no watercooling. No problems with both types. The in runners are good for replacing brush motors as the 35mm brushless motor are the same bolt holes as the 540 brush motors. My first brushless was a Trackstar 17T 2400kv into an old rc car, 90watts to 550 watts, turn it into an insane rocket. The main brushless motors we use in the boating club are Hobbyking 3639 750 and 1100kv, 3648 1450kv and the outrunner D3548 1100kv with a 2 blade 40-50mm props. ESC's are the car 60 and 100 amp which handle 2S to 4S Lipo batteries.
Hi All We tested one today using PVC conduct covered with pool noodles which is a high density foam. We used hair elastic bands to hold the recovery boat to the device which also handles different width boats. The other end is faired out to help capture the other boat also if only a push is required. The forward sections can be un pinned for transport. The test today worked well on the unrequired to be rescued tug. The PVC tubes are sealed in the T sections and the removal sections forward of the joint pins.
Hi I have 3 working, 2 building, 2 restoration projects,1 maybe(I cutout the frames and keel) and plans of the Sea Queen, Sea Rover and would like to rebuild the Sea Hornet, but, 25% larger!! How many will never get built in the 64 dollar question!!!!!
Hi Robbob A serious cut of frame 2 and CF2 would be required. I cut out a section of frame 2, but, not CF2 at this point as I had no wheel house pics. I have download yours, thank you. Sorry about the pics, but, I thought as I live in Tasmania they would be the right way up for you living in Britain.(HA. HA!!). The later kits did not have the full plan with them, but, the original builder still had the plans and frame outlines which he traced out before starting the boat. I borrowed the plans, etc. and have a paper and PDF copy. I have the roof held down by double 10mm magnets, also the roof hatch is a working one. Canabus
Hi Robbob I bought one built without running gear two weeks ago, but with a new set of Decals and new life buoys which I will make the locating bits as the old one's where only glued on. Half the bulb lights do not work so I have removed the wheelhouse roof. The grab hooks(which I have made), the drive line brushes required replacing so I replaced the shaft as well. Installed a Hobbyking 3648-1450kv with a 2 blade 40mm prop. I do not think my boat will be as nice as yours, but, I have seen a few bits on yours I can make, like an opening wheelhouse hatch
Hi I use the Turnigy 45/60/100Amp car ESC's with the programming card. If you decrease the brake force, drag brake and initial brake to the minimum these ESC's work well. Decrease the reverse to 25%. Start to about 10%.
Hi I have a Aerokits Sea Commander with a 35mm brushless motor 3639-1100kv Turnigy 800 watts, 3S Lipo battery 5800mah 25C Turnigy, 60 Amp car ESC and using a 2 blade 40mm prop. Good turn of speed without going silly.
Hi Simon We use the Hobbyking 35mm brushless 3639-1100kv motor(no water cooling), 60 Amp car ESC (HK-60A SL) with the program card ,Zippy Compact 3300.3S.25C and prop 2 blade 40mm. I am using this setup in my Sea Commander, but, I use a 5800mah battery as it is a little bit bigger boat. I also have the little Sea Hornet with a 28mm brushless motor. I have the Sea Rover, Sea Hornet, Swordsman and Sea Queen plans on PDF. Canabus
Hi Rob Nice to see you into Aerokits boats. I have built a Sea Hornet on the original plans. Runs a brushless motor on 11.1 volt Lipo battery. Very fast little beast. I have a Sea Commander with a 3648/4 1100kv brushless motor on a 11.1volt Lipo battery. The old girl is faster on this setup than an IC motor with reverse and no starting problems.
Hi Andy The Plan and article of SUZIE-Q are available on E Bay(vintage-plans-905) from Canada. http://stores.ebay.com/Vintage-Plans-905/MODEL-BOAT-PLANS-/_i.html?_fsub=1042242014&_sid=873810934&_trksid=p4634.c0.m322 If you order two or more same postage price!!!!!! The Vivacity and Lorriane are available also!!!! I saved by rescanning a couple of Aerokits plans which are from the same time. Forty year plus paper is a bit problem.
Hi mtbman Welcome to the world of model boats. As I am retired I go into the shed for a hour and exit 3 or 4 hours later. Time fly's when you are have fun and I think it improves you health and makes the brain work. Build the MTB, we have seen too many PT109's!!!! Can-a-bus 🙏
Hi Derek The best 700 revs at 19000 rpm and has a 5mm shaft. power is about750watts. So a 3639-1100kv(800watts) 16280 rpm on 4S Lipo battery or a 3648-1450kv(1600 watts) on 4S 21460rpm. Both require a 60 Amp ESC. The mount holes on these are 25mm apart, I cannot find the mount hole size for the 700's.
Hi Mister Bee Reading brushless motors e.g. 3639-1100kv It's diameter is 36mm and 39mm long. Battery handling 2S to4S(7.4 to 14.8 volts). Power 8oo watts so required ESC 60 Amps. What the specs do not say is the water prop size, but, only aircraft prop sizes. For this size motor a 2 blade 40mm is a good start. The 1100kv is the revs per volt, so 3S(11.1 volts) 12210 rpm and on 4s(14.8 volts)16280 rpm. Another couple of motors are the D3548/4-1100kv(910watts),the 3025-1500kv(1300watts) and the 3648-1450kv (1600watts). These will use the same ESC and Lipo battery(5800mah 40-60C).
HI pmdent The 3639 and 3648 motors we run no water cooling and for ESC's we use Hobbyking car 60-100Amp. These have an electric fan on top and have reverse as well. You require a program card, but, they are easy to set up. I can give you the set up I use on my cars and boats. I have found 25% reverse power is a good safe setting.
HI pmdent I finished building a Sea Hornet from the original plans and had them scanned as PDF file(also made up the frames). I deceased the prop shaft angle and used a 32mm prop 2 blade with a brushless 28mm 1900kv 750 watt motor on 3S(11.1volts) 2650mah Lipo battery. It will hit about 40mph on a calm day!!!! The IC motor used back in the day were not as beastly as these brushless motors. 750watts = about 1 HP. You crash tender is more suited to a 35mm 3639-1100kv on 3s 5800mah Lipo battery with a prop size 40-50mm 2 blade or 37mm 3 blade. I have this setup on my camera boat and works well. P.S. Would you be interest in a swap of plans. I have the Sea Hornet, Swordsman and Sea Rover as PDF files. With the PDF files you can change the boat size by going from 100% to 125% and the Sea Rover goes from 29 and 1/2 to 35 and 1/4.
HI Jarvo I have the 90 degrees part right but the 45 degrees is only about 10 degrees because of no room in the stern of my 25 and 1/4 inch Aerokits Sea Hornet. My next has the room because it is 37 and 1/2 inch.
HI Steve I have the Hobbyking Turnigy IA-6 six channel which supports up to 20 models(I have 8 receivers at present). The receiver has two aerials so I have one going across the hull and the other going the length of the hull. Programming is on-board via the LCD screen. The bind lead is loop around one of the servo leads. I also have a cheaper Hobbyking 6 channel HK-T6A V2 which requires programming on a computer (uses XP system only). I would buy another one of these again.
HI All We found that sitting the deck on first(hull upside down) and marking out both sides of the hull frames onto the underside of the deck. Mask up this area and coat the rest with thin layer of glue or fibre glass resin will waterproof the under deck. This will stop the deck delaminating in years to come!!!!! I like the idea of installing the spray rails before installing the deck. I also install the motor and drive line before installing the sides. Also if adding floors cut these to fit before installing the sides. I did this on my Sea Hornet which I built last year(see modelboats forum Sea Hornet 2015).
HI AlanP I have the original plans of the Aerokits Swordsman(33 and 1/4 inch) it shows 5 pairs of spray rails on the hull bottom 3/32 inch square and another pair (1/8 by 1/4 inch) on the joint between the sides and the bottom.
[Score: 6/10] 33"/1500g Blue Vee Direct Drive to a 3639-1100kv (2 Blade X Type) Powered by LiPoly (11.1v) 6Amp/h Batteries Controlled Through Hobbyking 60A car ESC - Comments: 40 year old fibreglass hull finally finished. Using it for testing motors and props.