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>> Home > Tags > battery

battery
battery life
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advise required by teejay Lieutenant   Posted: 11 hours ago
Hi all and thanks to Ron and Doug I have not forgotten about the TGY-i6 set and have looked at the suggestions from Ron. I looked at a lot of stuff it can be a bit of mine field, I have fond this at Cornwall models Servo, Batteries, Charger & 15A ESC This pack provides the radio control unit and all items necessary to complete an RC boat kit. Certain models may need a motor Contents: 2-Channel transmitter Reflex Pro 3.1 2.4GHZ 5-Channel receiver, CS-3 steering servo (3kg/cm force) Transmitter batteries, 7.2v/2100mAh drive battery 15Amp Marine Electronic Speed Controller Plug charger Multi-lingual instructions Part No: CMBRCP15 I think this may be the way for me to go as it seem to have all the things I need to learn about in the one package, I know I may have to up grade some parts but for the first timer I think it would do your opinions would be much appreciated

advise required by teejay Lieutenant   Posted: 1 day ago
Hi all and thanks to Ron and Doug I have not forgotten about the TGY-i6 set and have looked at the suggestions from Ron. I looked at a lot of stuff it can be a bit of mine field, I have fond this at Cornwall models Servo, Batteries, Charger & 15A ESC This pack provides the radio control unit and all items necessary to complete an RC boat kit. Certain models may need a motor Contents: 2-Channel transmitter Reflex Pro 3.1 2.4GHZ 5-Channel receiver, CS-3 steering servo (3kg/cm force) Transmitter batteries, 7.2v/2100mAh drive battery 15Amp Marine Electronic Speed Controller Plug charger Multi-lingual instructions Part No: CMBRCP15 I think this may be the way for me to go as it seem to have all the things I need to learn about in the one package, I know I may have to up grade some parts but for the first timer I think it would do your opinions would be much appreciated

wheelhouse amd bridge by AlanP Fleet Admiral!   Posted: 1 day ago
I don't have any photo's of the building of this, so I will try to explain. I cut all the pieces for the wheelhouse out of 1mm plasticard, the pieces were then fitted together with masking tape to make sure that they all fitted neatly together. The windows were then cut out of Perspex and their positions marked and put aside. The floor of the wheelhouse was planked along with the rear wall, the five side pieces were then wooded (for want of a better word) light oak for the frames with teak for the infills, the windows were checked to make sure they still fitted. The whole lot was fitted together with masking tape and glue run down the seams with a small brush. After drying the outside of the wheelhouse was wooded 😁 over lapping the windows by a couple of thou, the windows were glued in place with canopy glue. Aft of the wheelhouse are the battery boxes, these were made out of plasticard with doors made out of wood, kiss buttons used for the door knobs. Two sliding doors were made out of wood, small plastic channel for the runners. The bridge was made using the same principal as the boat deck.

Krick Police Launch by MouldBuilder Lieutenant   Posted: 1 day ago
I have just started to build the Police Launch that I have had for a while. Work commitments have left me with little time lately but hopefully I can get a good run on this one for a while. I hope to finish it by late July which just leaves me enough time to send it to Hungary so that I can test it. The kit is said to be good for a beginner. This would be good as many years ago I built a Patrol Torpedo Boat which took me five years. I am currently restoring this one as well but I think that will take most of this year to complete.😁 I have started by buying the speed controller. The motor is a 400 brushed. Probably not going to be too difficult to keep up with this one. The kit itself is not too bad considering the price, but I do feel that the ABS vacuum formed hull could be of a slightly better quality. Also I am finding the ply wood to be rather brittle. Does anybody have an idea for a good filler to use to fill the chips which will take to acrylic paint. I have prepared the hull and added the propeller shaft and rudder holes. Care taken here to avoid splits in the plastic. Cellotape on both sides before drilling helps.🤓 I have assembled the internal parts which hold the motor, battery and rudder and also fitted the prop shaft.😲 I will start on the deck and superstructure next. An additional note about the kit. The instructions are reasonable but they are in black and white which is not helpful considering they are photograph based with text. I found a PDF on the web which is in full colour. Why don`t Krick supply this. Surely not that expensive.🤔

Sea Scout 'Jessica' Sea Trial - at last! by canabus Fleet Admiral!   Posted: 2 days ago
Hi All Looking at the boat and the specs, a few things jump out at me. The battery is far to big and heavy for the boat(a 3S 2000-2650 mah). The motor no guts( a Prop Drive V2 2836-1800kv). The prop 2 blade 30-32mm. Hope this helps, sorry to upset your setup. Canabus

Sea Scout 'Jessica' Sea Trial - at last! by RNinMunich Fleet Admiral!   Posted: 2 days ago
Part 1. Ideal conditions; nearly 30°C, cool Bier at hand😜 Sea Scout built by Dad in the early sixties with a Taycol Target and 6V lead acid wet cells (very wet😡). Renovated and dragged into the 21st century over the last several months 😉 See Build Blog 'Sea Scout 'Jessica'' for details! Motor: Propdrive 2830, 1000kV, 30mm 3 blade Raboesch prop. Quicrun 16BL30 (30A) ESC with BEC. Tested with 3 battery types, all started with 99% measured capacity- 1. NiMh 4.2Ah 7.2V, nom. 408gm. Result: Speed sedate (OK 😉scale river cruising!) No planing. Max current: 3.6A End status V / capacity left: At end of short run ca 3 mins. 7.78V 99%. 2. 2S LiPo 4.0Ah 7.4V nom. 257gm. Result: Speed still sedate but due to lower batt weight at least the forefoot came out of the wet stuff! Max current: 4.1A End status V / capacity left: At end of short run ca 3 mins. 8.25V 93%. 3. 3S LiPo 4.0Ah 11.1V nom. 315gm. Result: Now we're getting somewhere!!😁 Good speed, manoeuvrability and planing 😊 Max current: 7.5A End status: 11.95V 74% after several long runs, ca 20 mins total. Estimated (extrapolated) endurance on a 4Ah LiPo around one hour - mostly 'full bore' - 'Pedal to the metal man' 😊 See also: https://youtu.be/oMUlSOaAREM The competition! https://youtu.be/zPgYicA0yGw Final run. (Beer was getting warm😁) Cap'ns log entry: Boat dead-weight w/o battery: 1.8kg. Spray rails to be added!😲 Slight list to port to be trimmed. Rudder servo to be reversed!!😲 Keel protection to be added: some scratches and flaking from stony sloping shore 🤔 Summary: much as expected👍 Forget anything less than 3S. Anyone want to buy a batch (4) of new 2S 4Ah 45C Lipos? 'One careful owner'! Happy boating people, Cheers Doug 😎 PS Many thanks to Camera girl Gisela 👍 Recorded in 1080p HD.

H.M.S BRAVE BORDERER by RHBaker Fleet Admiral!   Posted: 3 days ago
Looks like everything is set for the first open water test. Sun is shining, ice has gone and water smooth. Intention is to start the open water test program with a repeat of the pool test, except this time with everything wired correctly; the load cell positioned so the “pull” is more horizontal and ballast available to hold the propellers underwater if necessary. Hope these improvements help reading stability. To modify the “pull” arrangements, wrapped a light cord around the propeller shaft struts and fed the loose end above the transom shelf and out over the stern. The load cell was hooked into this and then tied to a fixed grating on the pond side. Started by measuring the electrical requirements for each of the three motors and the propeller bollard pull, using the 2 S battery. Found the bollard pull was up slightly at almost 3 lbs per propeller. Probably because they were now held at a greater depth in the water. Also blew several 20A fuses, so fitted 30, which seem to work. A series of runs showed adequate performance with plenty of spray, although the bow did not lift much onto the plane. The forefoot did raise almost above the water surface. Then tried a 3S battery. Although this was much heavier, the performance improved dramatically. The bollard pull was up to almost 18 lbs per shaft. The bow still did not lift much to a plane, although the forefoot was almost clear of the water at full speed. The battery was located just back from the bow, so it is suspected that it held the bow down. The impact of the transom flap down angle could also hold the bow down, but have decided to leave as is for the time being and avoid the temptation of making too many adjustment at once. Whilst it is still too early to draw definite conclusions, it seems as if a 3S battery will be required. The model sustained some slight damage due to the test arrangements, so will repair that and also fit the 2 bladed Hi Speed propellers. Will then repeat the program and report. Should be able to draw some definite conclusions then on the best power train. Neither of the batteries used, neither the 2 S nor the 3S are ones I would choose for this model. As a result the capacities and weights are not ideal. That must also be remembered in future deliberations.

Brushless Equivalents by canabus Fleet Admiral!   Posted: 4 days ago
Hi Andy I work on the motor case around the same size as the prop diameter, the rpm and power of the old motor. Add a few more rpm as we like to go faster. Matching the revs from the old motor e.g. 20,000. Kv of the brushless motor times the Lipo Battery cell number(4S= 14.8 volts) e.g. 1450kv times 14.8= 21460 rpm. So an OS40FSR was 1.6HP @ 20,000. Replacement 3648-1450kv = 21460rpm(no load). Power 750 watts = 1HP and the 3648-1450kv is 1600watts. As for brushless to brush motors you can match the rpm, but, the brushless are far more powerful than the brush motors. As for a conversion chart it would be a big task and some of the gear is not available in all countries. Canabus

NAXOS - Fishing Boat by hecrowell Sub-Lieutenant   Posted: 4 days ago
After a time away due to illness and other family issues, I am back to the build of the NAXOS. By accident, I think that I have obtained a suitable power plant for her - it is the motor out of a cordless drill which I can no longer get a battery pack for. Aparently, it runs on 6V to 60V. Wondering if it will require water coolong or not. If so, how does one arrange a "water scoop" for the cooling tube and where is the discharge sent to? Maybe a port in the transom..... As you can see, it has a pinion gear on the shaft and I don't know if I should leave it on and incorporate a prop speed reduction gear or remove it (with heat) and go "direct drive" coupling to the prop shaft. I have a plan for the ESC with BEC and as I love building electronic devices likely will go with "home brew". I am a boat building novice so constructive input appreciated. Have located a source for wood construction material, so hopefully will have something to show next time.

brushless motor by Mataroa Fleet Admiral!   Posted: 4 days ago
Hi canabus would you let me know how ur trials go with brushless motor and with 100AMP esc and Lipo battery. then i get the same for my boat .many thanks for the help .cliff

brushless motor by canabus Fleet Admiral!   Posted: 5 days ago
Hi Cliff I am installing a Hobbyking Turnigy L5055-700(1600 Watts) with a 100Amp ESC and a 4S 5800mah 60C Lipo battery. Plan to start with a 2 blade 52mm CNC prop. Canabus

Dremel Battery Pack! by figtree7nts Fleet Admiral!   Posted: 5 days ago
Good luck on the sea trails!👍 Can't wait to see the video.... Yes, will definitely mind my fingers!

Dremel Battery Pack! by RNinMunich Fleet Admiral!   Posted: 5 days ago
Here in Old Munich as well, washed out my Sea Scout trial planned for today😭 Looks like being and rainy and thundery week. Got everything packed in the rucksack ready to go if it brightens up; now let me see ... selection of drive batteries to test, in LiPo bag - check, Capacity / cell tester - check, TX and spare batts - check, Camcorder (batt fully charged) - check, Drying cloth - check, Basic tool set & Mini-multimeter- check, Bath towel if I have to swim again - 😡 Inflatable rescue kayak - !? Essential provisions (just a wee dram Officer) 😋 - check, Foam block boat stand - check, OH!! THE BOAT!! 😲 Might stick the PTB in the car as well, just to try it before I start on the reno and upgrade / conversion to PT109. In for a penny .....! Happy Dremelling Ed, mind yer fingers! Cheers Doug 😎

Dremel Battery Pack! by figtree7nts Fleet Admiral!   Posted: 5 days ago
I just received my replacement Dremel Battery Pack! It charged in 1 1/2 hrs. Now, I can continue my build of the Brooklyn! Oh, we're having another rainy day here in New England!

S 100 Schnellboot RC build by boaty Commander   Posted: 6 days ago
I have a liking for Italeri kits myself. Built the Vosper MTB in 2011 then the PT 109 a few years later. They really perform well either with single or triple props. Both of mine have 480 brushed motors, single props, and 2s Lipo 2200mAh. Ideal for small ponds where you can maintain scale speeds and if easy on the throttle you can have a decent endurance before the battery goes flat. Boaty😁