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>> Home > Tags > batteries

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batteries
KD Perkasa by cormorant Commander   Posted: 1 day ago
I acquired this boat part built some months ago through Dave M. I have not put too much scale in detail but I am quite pleased with the overall finish. It is powered by two brushless 1250KV out runners and in the first sea trials I used 12v lead acid batteries. (That video was posted a few weeks ago - mdlbt.com/26793). This video shows its second sea trial after I was persuaded to use lipos. The difference in performance is very pleasing. Thank you Dave M for your help and advice during the build.

Dr. Ing. Sander by Inkoust Lieutenant   Posted: 7 days ago
The German model of fire boats. Hull with plankováním-wood, fiberglass superstructure. Drive 2 pieces motru 400 with gear ratio 1: 3, used customized truck from washer pump and powered by the 400 system. Complete illuminated flagpole, lights, cabin space and marker lights. Lifting the fire escape personally manufactured servo. Two functional water cannons. Batteries 2 pcs NiCd 3000 mA

SMIT NEDERLAND by Inkoust Lieutenant   Posted: 11 days ago
Construction of laminate hull, superstructure and accessories are made of ABS and laminate. 2 pcs drive motors 600, 2 pieces of lead acid batteries 6V 10A. Scale Processing of fully functional rudder, mast complete lighting, headlights and hooting

Sad News by figtree7nts Fleet Admiral!   Posted: 13 days ago
I had San Pedro in the bath a day ago, Just doing a seaworthiness test! I think she was in the water for about 5hrs, needles to say she took on about 4oz of water! I didn't realize until a day later when I picked her up to put her back in the water. I saw a water stain didn't pay to much attention to it. I went to turn on her running system. As you can imagine I had a look of dread, when I saw all that water and no pump to pump it out of the engine room... I took the batteries out, they suffered no damage. The electronics was pulled out and dried! I left the superstructure off so the engine room can dry. It will be a few weeks of drying, before I can try to access where the leak is coming from.😡😡😡 But I think it's all the weight she carries. 21lbs is quite a bit to carry! Oh, well I'll figure it out later...😭😭😭

Sydney Star by Inkoust Lieutenant   Posted: 13 days ago
Kit from Graupner, fitted 2pc motor 400 for transverse drive and 1pc 500 main drive. Pb batteries are 6V 10A osvělení cabins and containers underneath. Dýmení from the chimney. I apologize for the language I am from Czech Republic and I use the Google translation.

guilded lilly by scout13 Petty Officer   Posted: 16 days ago
[Score: 10/10] 44" guilded lilly Twin Propellors (3 Blade 50mm) Direct Drive to a 555 (3 Blade) Powered by Lead Acid (12v) 6Amp/h Batteries Controlled Through mtronics 15amp ESC - Comments: The hull was saved from a skip at Burbberys in Castleford by a friend the table and chairs come out of the front cabin when she sails and two 6volt batteries are sloted in the boiler is an old saxa salt tub with a sterident tube for a funnel this hides the speed controler etc

Ballast for Puffer by randhbarker Sub-Lieutenant   Posted: 17 days ago
I need to get a lot of weight into my Clyde puffer (approx 15ILBS) I have used a couple of old 12v lead batteries either side in the middle,have got a fair bit of room to play with at Bow end. Access to the stern is very limited and I need to get about 4ILBS in there as the prop is half out of the water. Any suggestions out there.

First post... by Midlife306 Chief Petty Officer   Posted: 19 days ago
Hi Dave, That looks like a really nice piece of water! I have a massive appreciation for the work, skills & dedication involved in building & running accurate scale models. My fascination is with fast boats, K7 in particular & although the design is over 60 years old now, it's still a bit of a hooligan. It just didn't occur to me that someone with a boat like mine would be welcome amongst the scale community, at first scan through list of clubs there isn't anything on my doorstep, I'll have to increase my radius. My skill levels are limited but as they say every day is a school day & I'm picking up new knowledge & skills as I go along. The concern for me between IC & Brushless is on one hand add fuel & run for hours vs add batteries & run for minutes. 240+ amp esc's can cost the same as a half decent 30cc IC engine but to be honest for me the sound of electric motors is far more preferable to IC. I guess I need to take on as much advice as possible before I start splashing the cash. I'm certainly not pigheaded enough to ignore advice given, that's for sure. I've seen a video on YouTube of a guy building an aeroplane fuselage without a mold, by creating a blue foam plug & fibreglassing over it, once the fibreglass has been smoothed & filled it is split to remove the foam core, he ended up with a large lightweight fuselage that only needed minor bracing to make it strong enough to fly. This idea really appealed to me so I went out today and bought a load of blue foam, I'll have a go at building the sponsons first & see how I get on... Cheers Wayne

MTB743 by solo1274 Chief Petty Officer   Posted: 19 days ago
[Score: 8/10] 43"/1900g MTB743 Capable of 7mph and a runtime of 35mins Direct Drive to a COMBO 380 (3 Blade) Powered by LiPoly (11.1v) 11Amp/h Batteries Controlled Through ACTION ELECTRONICS (5Amps) ESC - Comments: This is a Failmile 'D' MTB. This version and number were operated by the 65th Canadian MTB flotilla in the English Channel. I made the model as this version as my Uncle was one of the crew. This model hull is built from scratch in the in the same was the real boats were using double diagonal planking. The propulsion is with 4 props paired using a dual ESC by Action Electronics and 2 11.1v LIPO batteries. These MTB were powered with 4 Packard 4M-2500 Engines with a hull speed of 34.5kts. Armament:- 4 x 18" torpedo's, 2 x 6pdr Mkv11 guns, Twin 20mm Oerlikon gun, 2 x twin Vickers Machine guns on powered mounts, as well as other smaller machine guns on the bridge. For more info goto the Manitoba Maritime Museum

Damen Stan 4207 by RHBaker Captain   Posted: 25 days ago
Although we have had several signs of spring, the local outdoor pool is still closed. Our club was requested to attend a local boat show, using our portable pool, so took the opportunity to test the vessel as she is now almost complete. In an earlier post described that if the later additions could be contained within 2 lbs the model should be close to the correct waterline. This was determined by using weights balanced at the stern. So far, have added about 1 ½ lbs, but mainly around the mid section. From the attached pictures it can be seen that the bow is slightly low and the stern high. This suggests that by moving weight within the hull the correct balance can be obtained. If 16 oz is placed at the stern both bow and stern become correct. Am loath to just add ballast, prefer to rebalance and retain the current weight. Fortunately within the hull there is space towards the stern that can accommodate a heavy component. Had been reluctant to commit to either a stick or stack style NIMH battery, so decided to make one up using two plastic C type battery holders and individual C cells. See picture. The electrical system is 7. 2 volts, the cells were divided into 4 and a two cell trays. The heavier of these was disconnected and moved 8” sternwards. It is too early to finalize the weight distribution as have to build the R.I.B. and it's launch/retrieval system. Think that moving this 12 oz sternwards though the vessel should be close to the correct waterline.Hope to be able to check that shortly. From the stern picture a list to starboard is evident. This is easy to correct by moving the batteries slightly in the opposite direction. Although the pool is quite small, was able to test all the other functions. Scale speed was realistic and during a sharp turn little heeling is apparent. Everything else, bow thruster, fire hydrant, lights, radar scanner, fin and rudders work satisfactorily.

cabin cruiser by aeromodeller Petty Officer   Posted: 26 days ago
Thank you Dave for your help, one last question why size battery should I get , not keen on lipo,s as dont know what knowledge the lady has about batteries and lipo,s need very careful handling ,so was thinking of nimh. Peter

MISS GEICO POWER BOAT 29" by agoodboater Sub-Lieutenant   Posted: 1 month ago
for sale R C Miss Geico 29" brushless power boat twin hull complete set up with Spektrum DX2 radio control, very fast !! this is all brand new i bought this over a year ago and never used, so in near mint condition, change of circumstances forces sale ***NOW SOLD*****

Novice Build: Vintage Model Works 46" RAF Crash Tender by andyhynes Petty Officer   Posted: 1 month ago
I built mine a couple of years ago. The wood is good quality and the metal fittings dont take much cleaning up. My fireboat runs of a brushless motor running of lipos batteries and performs well. I used auto paints regards the finish. and very pleased with it. It performs a good as my 49" Perkasa which runs of two brushless motors with the lipos wired in series.

Sweet ❤️ ❤️❤️ Heart by Grandpa Lieutenant   Posted: 1 month ago
You have seen it being built. Now it is done. A Nor-Star Kingfisher kit but with some scratch building too. Because of the motor being longer than how the kit was originally designed, the second bulkhead was altered. I am running it with two 2400 Ni-MH 7.2 batteries, a Futoba servo, on a 2.4 GHz Spektrum.

Model Riva Sportsboat by JohnM Apprentice   Posted: 2 months ago
4ft model Riva Aquarama sports boat for sale, as featured in 'Model Boat' Sept. 2011. Mahogany build. Immaculate. Radio controlled. Twin electric motors. All batteries, controls etc. Hardly used due to bereavement. Based in Coventry UK. £300.