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 11 
 on: November 17, 2014, 04:42:32 PM 
Started by DontMindMoving - Last post by Herbert West
but how does NIMH work ?

Like all rechargeable batteries, NiMH batteries can be plugged into a charger, which plugs into wall power, which recharges the batteries such that they can once again power your battery-powered things.

How can it be when my Demolisher use AA batteries ?

When you install a pack, you don't use the stock battery tray - you put a connector in your blaster and on the pack, and then mount the pack wherever it fits. Battery packs use the same connectors to connect to their charger. You can find plenty of guides on soldering and installing battery packs online. Google is your friend.

Toruk recommended NiMH sub-C, which is a common size of cell used in battery packs which is a bit smaller than a C cell (hence the name).

It sounds like you don't have much background knowledge in electronics, in which case you either need to do a lot of reading before you start working on your blaster (but don't be discouraged - electronic mods are fun!), or you'd be better off just using those aforementioned consumer rechargeable AAs.


 12 
 on: November 17, 2014, 04:02:20 PM 
Started by DontMindMoving - Last post by DontMindMoving
It was the first time I used the swarmfire. I was with my little sisters and I didnt realize it wasn't "normal" to shoot that much  Cheesy
Ok, so I should buy two sets of NIMH -- but how does NIMH work ? I don't understand.
And torukmakto4, you said that a set of NIMH C for my swarmfire could work also for my Demolisher, but how can it be when my Demolisher use AA batteries ?

 13 
 on: November 17, 2014, 03:42:51 PM 
Started by DontMindMoving - Last post by Herbert West
Well, yeah, I was basically firing continuously during those minutes.

Most HvZ players don't fire anywhere near that much during a game - we'd run out of ammo! If you really want to fire many hundreds of darts per game, and can carry enough ammo, you'll want to use rechargeable batteries, and probably to carry at least one extra set of fully charged batteries.

Battery packs can provide better performance and endurance than loose cells because they do not incur parasitic resistance at the cell terminal contacts. However, if you don't want to modify your blasters and don't mind stockish performance, consumer-grade NiMH rechargeable batteries (i.e. the rechargeable batteries that they sell in pharmacies) could serve you well enough - you'll just need several sets to swap during long games.

 14 
 on: November 17, 2014, 03:41:45 PM 
Started by DontMindMoving - Last post by DontMindMoving
Thanks for your answer but I have absolutely zero knowledge about all of this.
I'm pretty satisfied with my Swarmfire ROF, but only during the first 20 minutes, when it's well charged. Anyway, yeah I'm not gonna try to go to a higher voltage -- I just want those 20 minutes to be longer. So I'm thinking about switching to a "7.2/8.4V sub-C NiMH pack" but I don't understand how does it work. It's that what you're talking about :
http://www.amazon.fr/mod%C3%A9lisme-Conrad-Powerpack-connecteur-Traxxas/dp/B005FWX6LI  ?

Again, thank you !

 15 
 on: November 17, 2014, 02:37:18 PM 
Started by DontMindMoving - Last post by torukmakto4
If you are killing alkaline batteries that fast, you REALLY, REALLY need a proper rechargeable setup (as in a battery PACK) with more capacity. If you are satisfied with your Swarmfire ROF, just switch to a 7.2/8.4V sub-C NiMH pack (often used in RC cars). These go up to 5500mAh; or you can use a 2S or higher voltage LiPo but be sure to do your research and avoid overdischarge or mishandling. Go to a higher voltage if you want more ROF (14.4V/4S lipo = 400RPM and 6S = 500-650) The same pack you get for your swarmfire can most likely power your Demolisher, 7.2 or 8.4V will be a lower-end velocity upgrade. Don't run stock demmo motors on higher than 10.8V or 3S lipo which is what I would recommend if you want performance.

The Li-ion 14500 route is most certainly NOT for you. Versus alkaline and NiMH cells of the same size, those 3.7V cells have around 1/4 the capacity, and running a higher voltage will increase current draw and exacerbate the problem.

As you have discovered, disposable cells are not a good way to go. If you keep running them, you will soon have spent as much money as you could have spent on a pack and charger, not to mention that alkalines perform terribly.

Li/FeS2 primaries (the Energizer L91 etc. "1.5V" lithiums) may last longer and perform more consistently but are expensive and not even in the same universe as a rechargeable rig as to performance.

How much shooting do you do? It must be a lot. Most people get a whole hvz game or two out of a set of primaries in a stock gun.

 16 
 on: November 17, 2014, 02:35:15 PM 
Started by DontMindMoving - Last post by DontMindMoving
Thanks for your answer.

Well, yeah, I was basically firing continuously during those minutes. I didn't know this could totally kill the batteries ! Do you know how much time a lithium battery can add compared to the alcaline, so that I could be prepared next time ?

 17 
 on: November 17, 2014, 12:53:40 PM 
Started by DontMindMoving - Last post by Herbert West
I've known nearly-drained NiMH batteries to recover a bit of voltage when left to sit, but I've never heard of this sort of behavior with alkalines.

How much were you using your blasters during the aformentionned 20 to 40 min and 2 to 3 hours? (If you were firing continuously, pausing only to reload, then it isn't a surprise that you depleted your batteries quickly.)

Have you done anything to modify your blasters? Have you tried again with fresh new batteries, and had the same problem?

 18 
 on: November 17, 2014, 10:41:18 AM 
Started by DontMindMoving - Last post by DontMindMoving
Hi !

I'm very new to this and the Swarmfire is one of my first NERF gun.
Here's the problem : it doesn't last long enough. I just had the time to use it 20 minutes that it quickly became more and more slow. After 40 minutes, it didn't work anymore. After some time, it's working again, but not for very long and not very fast.
I have kind of the same problem with the Demolisher, even if it's not that bad : after 2 hours, it's not very powerful anymore, and it's stop working after 3 hours -- even if like the Swarmfire it can start again for a few minutes if I wait.

So I have two questions :
1) Does this issues seem normal to you, knowing that I use Energizer E91 AA 1,5v for the Demolisher and Rayovac 814 LR14 1,5v for the Swarmfire ?
2) What batteries do you use? I think I'm gonna use lithium battery instead of alkaline, but I'm not sure it will be enough. I've read that some NERF players use 3,7v batteries, and since I'm a new user of NERF, I'm a bit afraid to go already that way, but will it make my Swamrfire last longer ? What is, in general, the endurance of a NERF gun (I'm talking about his full power) ?

Thank you very much, and sorrry for my english, I'm french.

 19 
 on: November 16, 2014, 01:55:15 PM 
Started by mightlife - Last post by mightlife
Hi folks,
Today, a few of us spent a couple of hours running around in the park; despite small numbers, it was a success!
So it's happening again next week.

Time: 13:30–16:30, 23 November,
Location: Parc Ciutadella, Barcelona, Catalunya/ Spain

Facebook group - https://www.facebook.com/groups/284232001772268/
Facebook event - https://www.facebook.com/events/561870240581402/

If anyone else is around then, please do stop by the FB page and say hello!

Braaains!

 20 
 on: November 16, 2014, 01:43:38 PM 
Started by Juan Cuadra - Last post by mightlife
Hola,
Puedes añadir una partida en Parc Ciutadella, Barcelona al lista de 'Partidas activas'.

Tipo: partida corta (una tarde)
Fecha: 23/11/14
Local: Parc Ciutadella, Barcelona (ciudad)
FB: https://www.facebook.com/groups/284232001772268/

Moltes gracies!

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