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>> Home > Tags > lipo

lipo
lipo
March'71 by Sakibian Sub-Lieutenant   Posted: 2 days ago
[Score: 8/10] 18"/500g March'71 Capable of 9mph and a runtime of 10mins Twin Propellors (3 Blade 25mm) Direct Drive to a 180 brushed motor (3 Blade) Powered by LiPoly (11.1v) 1Amp/h Batteries Controlled Through Hnadmade by arduino (30Amps) ESC - Comments: The BEST thing about this one is, she's very smooth on the run. Decent power, makes it more fun. When it turns with speed, gets down like a bike. So that's the time when it leaks a tiny amount of water. Bcz it's not waterproof on the deck. Can take 2s-3s Lipo. Bcz the motors are 3s rated only. Have a plan to change them into better Mabuchi ones.

HMS BRAVE BORDERER by canabus Fleet Admiral!   Posted: 7 days ago
Hi A few pics of my modify setup, no pics before hand. Moving weight fore or adding ballast works better than wedges. Only tested the boat by myself and I gave it a real workout. Motor 3639-1100kv, 60A ESC, 5800mah Lipo and 37mm 3blade prop. A 40mm 2blade works better and uses a bit less power. Rudder blade size 30mm across the top, 22mm across the bottom, 45 deep and the shaft 10mm from the leading edge. Sharpen the leading edge and the trialing edge flat. This catches are air in the water and send it to the surface. Canabus

Modified Heng Long smoker unit by jbkiwi Commander   Posted: 8 days ago
This is a first try at a simpler quieter smoke unit. I used the smoker box/element off the Heng Long tank/car smoker unit with a 40x40 5v fan (the fan being voltage controlled by a 5v UBEC and the lot being run by a 2s Lipo (with a y splitter for the fan UBEC and the element using JST leads. Doesn't smoke that well as I had broken then repaired the element previously, but the other one I have smokes a lot better, and has a better type of element (possibly a newer version) Some photos etc on the smoker discussion. Unit is almost silent (the noise you hear is the camera and outside noise, as the window was open)

Smoke generator by jbkiwi Commander   Posted: 8 days ago
Have just made a prototype of a fan forced smoker which seems to be working well (despite breaking the heater coil by moving it while hot, - had it apart, broke wire, screw and washer repair, not quite as hot) I bought a couple of Heng Long smokers (for R/C tanks or cars) to play with, for $10 NZ each(or 5.3 Euros to you Northerners give or take a yen) from Bangood and just bought another from Ebay. There seem to be 2 different models, as one has a long coil with a lamp wick draped over it, which is sitting in the oil reservoir, the other has a small coil inside a piece of heat resistant woven tubing (as you might find insulating toaster/heater wiring etc) which acts as a wick and that also sits in cotton wool in the reservoir, (this seems to be the better of the two) Tip - don't fill the tank right up, only enough to soak the cotton, element should be just out of the oil. The wick loads the element. The better model seems to have a black top to the tank (also maybe either brown or black tank) and the other has a brown top and dirty brown tank. As with most of this stuff you won't know till you get it what it's going to be. What I did was remove the tank and cut off the pump tube just in front of the screw lugs (see black line in photo) then fitted the tank, and a 40x40x10 5v ESC fan (voltage controlled by a UBEC set to 5v on the jumpers) into a plastic electronics utility box from Jaycar (our local electronics and hobby store). I made up a double JST lead for the 2s 1800Mah Lipo and fired it up (using baby oil). It's pretty much silent and smokes well once it gets warmed up, ( starts smoking in about 5 seconds) You could control it (on/off volume) by either a remote on/off switch or perhaps a small cheap 10A brushed ESC. I would leave the fan running and control the element to avoid burning the element. The original pump tank inlet hole seems ok as is (approx 1.5mm) but you could enlarge it very slightly to get a better flow if you could find a better oil. At the electronics store they have proper smoke machine oil for $20 NZ per litre so I may have a look at that. The reason I went for the fan idea was that I found in std pump form, if I immersed a tube from the tank in water, it sucked water back into the tank. I was hoping it would pump smoke out of my HSL exhausts at water level alongside the cooling water but it would need a very light non return valve to do this. The fan seems to pump the smoke through 2mm ID silicone tube ok, so tubing of similar ID to the OD of the tank outlets should work well. These pumps in original form work pretty well for the price, and are cheap enough to keep a few for spare elements, the only thing is they are a bit noisy but in an 'engine sounding' way, (might add to the effect on a tug or work-boat though) What you have left after this mod is a very handy little geared motor with an eccentric output wheel which could be used for winches, radar and whirly bits of any description (see pic of motor leftover and original) To avoid burnout, these should be run on no more than a 2s (around 7.5v-(suggest 8v max with fan running) The other tank is going to work a lot better than this one but I'm not making a tug, just want a bit of exhaust smoke on start-up etc to go with the 2 sound units. Very cheap to make (around $25 NZ with pump, box, fan and UBEC all through Ebay, Aliexpress and Bangood (and local electronics store) If you wanted to run an ESC to control the smoke and you have no channels left to control it proportionally, you can always try using a second receiver bound to your TX, (if your TX will allow it,) power it and a brushed ESC (wired to the element) as normal and use the throttle channel to plug in your smoke control. This should work if you want more smoke as you accelerate or if you are using only 1 stick on a 2 stick TX you could use your 'elevator' stick pushed up (or a toggle switch if available) to start/stop the smoke (through the brushed ESC setup) . This setup weighs 100g (10g more than std) The quest for lots of smoke continues Will try to upload vid later and update progress.

All hooked up, nowt happens... by canabus Fleet Admiral!   Posted: 18 days ago
Hi All If you require a brush ESC. The Hobbyking one is the only one I have found with straight forward/ reverse with NO BRAKE. Set is with links, but the they only work on Nicads and Lipo batteries. They will run on 12 volt SLA, but no less!!!! I am using them in my two Hellen fishing boats with 55 turn rock crawler motors on 2S Lipo on 60% throttle. https://hobbyking.com/en_us/hobbywing-quicrun-60a-2s-3s-wate... Canabus

All hooked up, nowt happens... by canabus Fleet Admiral!   Posted: 18 days ago
Hi All I use the Hobbyking car ESC's HK-45A, HK-60A SL and HK-100A which all use the same program card(HK PROG-CARD). I use the same setup for all my boat, only changing the battery setting for the 2s, 3S and 4S Lipo. 1 Cutoff Voltage for 3S=10.2 and 4S=13.6 2 Start Power Percent=5% 3 Advance Timing=4 4 Run Mode=2 5 Brake Force=1 6 Drag Brake Force=1 7 Neutral Range=1 8 Initial Brake Force=1 9 Reverse Force=1 It works for me. Canabus

All hooked up, nowt happens... by jbkiwi Commander   Posted: 18 days ago
Hi Steve, I have the same problem with the ESCs in my HSL. They are cheap Chinese car models and can be a bit tricky to get into reverse quickly. I have found that either waiting a few seconds in neutral before trying reverse, or going to neutral and flicking the throttle forward a few clicks and back to neutral quickly (in .5 sec) usually sorts it. I think it may be that the motor stops somewhere that the cheaper ESCs can't detect (bit like an old car starter that hits the bald spot on the ring gear and you have to jog it a bit) so you have to move it slightly for it to 'see' it (maybe the capacitors also). Brushed ESCs don't have that problem as the brushes are in constant contact, rather than relying on correct positioning in Brushless motors. You will also find that some Chinese motors are not timed/wound correctly, and you can feel weak or 'floaty' spots between certain magnets which may also cause a problem. Perhaps trying a higher or lower ESC timing by 1 step either way might help if you have that capability. If it works by just flicking the throttle method, you can just slow down as you come in and take you time finding reverse in a scale like manner (remember the PT109 movie where they went through the shed on the wharf) You can also try swapping the other pairs of wires on the motor (same direction but different pairs). If you are still not happy then it might be time as Doug said, for a better ESC with instructions. Get one which has all the programing features, (fwd, rev , timing, auto batt detection (lipos or NmH etc) starting mode- ie soft,hard, brake etc) this will give you plenty of options for adjustment. Doesn't have to be a marine one, a good known brand car/buggy one will do and if you have any heat problems you can always put a mini fan on it. Water cooled marine ESCs are really only for high amp high speed setups. My 36"HSL has 2x 30A car ESCs running 2x 28/45 2000kv water cooled motors and ESCs never get even warm. Pictured are the ESCs I am using from HK which have an output plug for a fan if needs be. The 3rd pic is the brushed ESC types (EBay, AliExpress) I am using, which have no problems with reverse transition (see vid section re Thornycroft MTB maneuvering) also the HSL vids to give you an idea of how these brushless ESCs perform even with the minor reversing problem. Hope you get it sorted.

Brushless motor(s) by canabus Fleet Admiral!   Posted: 20 days ago
Hi Charlie I have tested my 37" Perkasa with a brushless 3639-1100kv motor from Hobbyking, a 60A ESC, 3S 5800MAH Lipo battery and 37mm 3 blade CNC prop. It's dam fast !!!! https://www.youtube.com/watch?v=9fddqnbnlrQ Canabus

Kingfisher by Norstar upgrades by boaty Admiral   Posted: 22 days ago
Ron Great to hear about this. I had a Kingfisher in 1972, powered by a DC Sabre 1.49 marine diesel. The engine was mounted just aft of the windscreen and it needed a a lot of ballast . With such a small engine and the additional weight the performance was mediocre. Is this kit in production again? If it is I might build one . Maybe this time I will fit a brushless running on lipos . This will give the model the performance it deserves. Boaty😁

Modern electrics by deltaman Petty Officer   Posted: 30 days ago
Hi all, Not been araound for awhile as I have been playing with aircraft as well, I have however found time to scratch build a Fairy Huntsman which I now want to upgrade to modern electrics, a brushless motor and esc etc, should I avoid lipo's due to the heat issues or can I use them ok. The hull is 42 inches long any suggestions on motor size would be appreciated, also esc size, the boat seems a bi on the heavy side. Any thoughts would be appreciated.

New bits by Rookysailor Commander   Posted: 1 month ago
Hi Steve, The lipo situation is I always use HobbyKing https://hobbyking.com/en_us/new-items.html?___store=en_us, a good choice and very fast delivery, regarding prop and size, on my huntsman I use a three bladed prop in brass 30mm M4, and silicon wires, loads of places but I always use The Component Shop https://www.componentshop.co.uk/, hope this is of some use to you😉 cheers Peter

New bits by steve-d Commander   Posted: 1 month ago
Right, just been given some nice bits. Brushless outrunner FUSION 3535/05 1500kv ESC Top Edge 60A water cooled SC060B Plus a coupling. So now to go shopping. Which make of Lipo3 and from where? What type and size of brass prop? Where to buy silicon wires and the fancy gold terminals? Steve

Thunder Tiger Avanti by boaty Admiral   Posted: 1 month ago
Has anyone done any significant modifications to a Thunder Tiger Avanti fast electric? I have one and all I have done is to replace the nylon prop with a metal one thus there is very little increase in performance and the reason for doing this was due to the nylon prop throwing a blade after striking an underwater object. Prestwich Model Boats have a suitable replacement motor complete with a better ESC than the existing Ace one and their system can handle up to 4S Lipos instead of the stock set up of 3s . I have located a source of a 4S Lipo which length and width is same as my 3S one but the height is a little more and it will fit into the battery box. To trim it out properly I would have to add some ballast to the starboard side. Due to the electrics including the battery all being in a small watertight box at the stern there is not a great amount of scope for a lot of mods. Boaty😁

aeronaut classic by Tica Lieutenant   Posted: 1 month ago
I have the following setup in my Classic: Graupner BL Compact 260Z 1380KV with a Graupner ESC 18A FWD and REV. The shaft is replaced with a Robbe 4mm (no 1442) as the one provided is a flimsy part that will not withstand the motor set-up. Prop is a 33mm Graupner racing item. It is running on LiPo 2S but if one need a rocket it can run on 3S. Great fun to build and performs great on the water

aeronaut classic by RNinMunich Fleet Admiral!   Posted: 1 month ago
Hi Simon, I used the lacquer on the blue and white as well. It 'flattened' the paint and made it real hard and smooth 😊 The whole time consuming but satisfying process is described in incredibly boring 😉 detail in my blog- 'Jessica - Sea Scout restoration' (or was it renovation ??😲 Go easy with the lacquer on top of the varnish, not too heavy in one coat, or it may cause hairline surface cracks as it dries due to surface tension. 😡 Motor is a Propdrive 2832, 1000kV driving a 35mm 3 blade brass prop from Raboesch. Running on a 3S Lipo using a Quicrun 30A ESC and Turnigy iA6 RX. Pic attached of 'Engine Room'. Link attached to videos of the sea trials in May this year, Ostpark Lake and Biergarten, Munich. https://youtu.be/b0BWJ3duzDw https://youtu.be/zPgYicA0yGw She's 24" LoA with an all up weight of about 1.5kg. BTW: the lacquer is also supposed to be UV resistant! 😉 All the best, Doug 😎 PS Here the link to my Sea Scout Build Blog https://model-boats.com/builds/view/28209