Search found 328 matches
- Sat Jan 02, 2021 10:57 pm
- Forum: Knowledge Base
- Topic: Replacing the power on relais with a battery shut off
- Replies: 17
- Views: 652
Re: Replacing the power on relais with a battery shut off
Hi Roy, lead acid batteries unfortunately have no fix correlation between voltage and remaining capacity, because the voltage is also dependent from load current. Maybe a battery shows 24 volts and ist nearly empty, when measured without current, and another battery has 20 volts and half its capacit...
- Sat Jan 02, 2021 4:58 pm
- Forum: Knowledge Base
- Topic: Replacing the power on relais with a battery shut off
- Replies: 17
- Views: 652
Re: Replacing the power on relais with a battery shut off
Well, also a warning given by a normal relay may be too late even when using simple lead acid batteries. When using LiFe cells this would be absolutely no practicable possibility. A BMS however would cause a final stop of the tank. IMHO a reliable monitoring of the battery state is the best solution...
- Fri Jan 01, 2021 12:06 pm
- Forum: Knowledge Base
- Topic: Replacing the power on relais with a battery shut off
- Replies: 17
- Views: 652
Re: Replacing the power on relais with a battery shut off
Hi Roy, I bought these components years ago from a military surplus dealer; mine come from cannibalized tanks (full scale). :mrgreen: But also other dealers (e.g. EBAY) offer such components in new state. Here 2 pics of a switching fuse and a bistable relay. The dual fuse has only 2 x 7 amps nominal...
- Fri Jan 01, 2021 12:38 am
- Forum: Knowledge Base
- Topic: Replacing the power on relais with a battery shut off
- Replies: 17
- Views: 652
Re: Replacing the power on relais with a battery shut off
In my 5 tanks I use an automatic circuit breaker as a main switch; from 30 to 60 amps nominal current, depending on tank model. These circuit breakers trip out at 150 % of the nominal current within about 10 seconds. This allows to consume up to 90 amps peak for this 10 seconds. IMHO most wiring of ...
- Wed Dec 30, 2020 10:32 pm
- Forum: Craftsman's Market
- Topic: RC Light Switches
- Replies: 9
- Views: 564
Re: RC Light Switches
Beier in Germany (the sound module manufacturer) offers a 4 channel RC switch with 15 modes. Could this be an option ? Here the description: https://www.beier-electronic.de/modellbau/produkte/rc-sm-4/rc-sm-4.php?sprache=gb If you like to control the loads with the sound module outputs there is anoth...
- Mon Dec 14, 2020 10:40 pm
- Forum: General Electronics Topics
- Topic: Lifepo4 Battery
- Replies: 8
- Views: 1194
Re: Lifepo4 Battery
Hello Christoffer, fortunately a 300 W sound system doesn't consume 300 W at any times; this is the peak current (e.g. gunfire). But yes, my 250 W sound system needs up to 3 amps, when the tank stays with motor idle. This is an average value because the volume is variable, controlled by transmitters...
- Sun Dec 13, 2020 10:40 pm
- Forum: General Electronics Topics
- Topic: Lifepo4 Battery
- Replies: 8
- Views: 1194
Re: Lifepo4 Battery
Hi Stephen, of course a BMS is a good thing to protect a LiFe battery, but I refuse to say it is the only one. Like you I think that your BMS switched off due to an 'excessive' current peak, but that limitation results exclusively in the electric data of the BMS and not in any damage which may happe...
- Sun Dec 13, 2020 11:04 am
- Forum: General Electronics Topics
- Topic: Lifepo4 Battery
- Replies: 8
- Views: 1194
Re: Lifepo4 Battery
Hi Allan, I use each 8 LiFe cells (26 V) of 36 Ah in my Jagdtiger, 40 Ah in my King Tiger with Porsche turret, 20 Ah in my King Tiger with Henschel turret and other 20 Ah in my Pz. IV. Please note that these batteries are the only power sources in my tanks, for driving, sound (up to 250 watts), RC a...
- Sat Dec 12, 2020 1:06 pm
- Forum: Jagdtiger
- Topic: JT in Germany
- Replies: 98
- Views: 12969
Re: JT in Germany
Hi Brian,
I'm not a friend of LiPos for tank models, because these types of batteries may burn, if they are not treated well. LiFes are much more safe in daily use.
I'm not a friend of LiPos for tank models, because these types of batteries may burn, if they are not treated well. LiFes are much more safe in daily use.
- Fri Dec 11, 2020 10:54 pm
- Forum: Jagdtiger
- Topic: JT in Germany
- Replies: 98
- Views: 12969
Re: JT in Germany
Hello Peter, glad to read that at the end you also have decided to use LiFes! In my opinion this is the only one power source that fits a modern vehicle; small, lightweight, powerful. :mrgreen: Due to the fact that a LiFe battery can be used at 100 % DoD without a significant lack of duty and a lead...
- Fri Nov 13, 2020 10:50 pm
- Forum: Craftsman's Market
- Topic: Rotisserie to Make Life Easier
- Replies: 8
- Views: 3564
Re: Rotisserie to Make Life Easier
Nice design, indeed! For my tanks I use customary hydraulic car jacks with a simple plywood plate for working and for storage with released drive train springs. These jacks are a little too high to drive over; therefore I move the tank upon 2 wooden beams with the jack between. Then I jack the tank ...
- Fri Nov 06, 2020 10:39 pm
- Forum: Chieftain MBT
- Topic: Totem Pole and the Sundance kid
- Replies: 26
- Views: 3433
Re: Totem Pole and the Sundance kid
Hi John,
thanks for reply. In better times the nameplates were some more informative...........
thanks for reply. In better times the nameplates were some more informative...........

- Wed Nov 04, 2020 2:36 pm
- Forum: Chieftain MBT
- Topic: Totem Pole and the Sundance kid
- Replies: 26
- Views: 3433
- Sun Oct 25, 2020 1:33 pm
- Forum: Chieftain MBT
- Topic: Totem Pole and the Sundance kid
- Replies: 26
- Views: 3433
Re: Totem Pole and the Sundance kid
Btw just a question: may anyone please tell me the nominal current consumption of the latest Spiradrive motors (nameplate)? Are there different Spiradrive motors (means electrical data, like power consumption) in use between heavy and light Armortek models or only different transmissions?
- Sun Oct 18, 2020 11:59 am
- Forum: Chieftain MBT
- Topic: Best batteries to use for chieftain
- Replies: 39
- Views: 2075
Re: Best batteries to use for chieftain
Does anyone have any measurement data wrt current draw of the motors on any model? Hi Richard, all my models have -among other shown values on my transmitter- a real time current measurement via telemetry (the other transmitted data are e.g. voltages of each LiFe cell, temps of motors and ESC and -...