Zaps Performance
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Zaps Performance
Increasing battery power by zapping
Remote control (RC) enthusiasts are experimenting with all imaginable methods to maximize battery performance. A racecar motor draws 30A for about four minutes delivered by a 7.2V battery. This amounts to over 200W of power, a large amount from a small battery. An experimental technique that seems to enhance power is zapping the cells with a very high pulse current. This is said to increase the cell voltage slightly and generate more power.
According to experts, zapping works best with NiCd cells. NiMH cells have been tried but do not produce consistent results. Companies specializing in zapping use a very high quality NiCd cell from Japan, and the sub-C is the most popular size for this application. The factory handpicks the cells and they come with a unique label in a fully discharged state. When measuring a totally empty cell (no charge), the open circuit voltage should read between 1.11 and 1.12V. If the voltage is lower than 1.06V, then the cell is considered suspect and zapping does not enhance the performance as well as with the others.
To zap a NiCd battery, a 47,000mF capacitor is charged to 90V, after which the raw power is discharged directly across a single NiCd cell of 1.2V. After the shock treatment, the cell is cycled and then zapped once more. Experts say that once a cell is treated and used in service, zapping will no longer improve performance, nor does it regenerate a weak cell.
The voltage increase on a successfully zapped battery is between 20 and 40mV when loaded with 30A. According to experts, the voltage gain is permanent, but there is a small drop in the gained voltage with usage and time.
There are no apparent side effects from zapping, however, the battery manufacturers remain silent about this treatment. No scientific explanations are available as to why zapping improves battery performance other than the belief that it lowers the internal resistance. There is little information available regarding the longevity of the cells after the treatment. Zapping only seems to work with high-quality standard NiCd cells, and in no way should this be used on lithium-based chemistries.
Another method to improve NiCd batteries is through a recondition program. Tests performed at the Cadex laboratories reveal a permanent capacity gain of about seven percent when servicing new NiCd with recondition, a program that lowers the battery voltage to 0.4V/cell on a secondary discharge. This capacity gain is not fully understood, other than to assume that the battery improved through additional formatting. Another explanation is the presence of early memory. Since new batteries are stored with some charge, the self-discharge that occurs during storage may contribute to the buildup of crystalline formation, which recondition reverses. While NiCds once played a pivotal role for RC enthusiasts, the interest is shifting towards high-performance Li-ion.
Article comes from: http://batteryuniversity.com/learn/article/increasing_battery_power_by_zapping
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which skimboard out of these two?
im thinking about getting a bigger skimboard because i keep sinking when i try to get out to the waves. i have a zap lazer and alot of websites say that it is not meant to be a good high performance wave riding board. its a little too small also so there are a few reasons i might need one. i dont really have a lot of money to spend so i was considering was the zap wedge medium(im about 100lbs but am still gonna grow quite a bit so i dont wanna out grow it) or the zap fish b/c i heard its good for being able to ride down the line of the wave. ty for help
Bigger is better when you are talking about getting out and into some waves especialy when you are just starting out skimming into waves. The boards you mentioned are great, but if you get a wedge get it in large because it runs smaller than a normal skimboard, for reasons I don't know. the wedge tends to be about 5 inches shorter than other boards with the same size (small, medium, large). The fish is a great board and out of the two you mentioned my favorite, but taing it on the flats kinda sucks because you have the swallow tail that digs into the sand when ride it tail first. I would pony up a little doe and get something that is a size bigger than you need and something that doesnt have a fish style tail because you arn't using it exclusivly for waves, i assume you still want to ride the sand. I understand that around you they may only sell zap skimboards for high quality foam boards, and this is common, and leads me to think you live on the east coast, so do i and i see this all the time, Zap has cornered the market here, and has done so for many years before you started skimming. If you can, look into the victoria line, I like there fiberglass options a lot more than zaps', but that isn't to say i dont ride a number of zap models during the course of a week. Last night I was on a zap fish, then a large zap wedge, then a Victoria Poly and as much as i say on these messaage boards not to buy online, a skimboard is a bit of an exception. there are only so many out there, and they can be hard to locate in a store situation. most are online especialy the ones you would want if you live on the east coast. If you do buy it from a store and they are only selling zaps, check out the chizel its a mix of the pro line and the wedge, it fixes the wedges size issues and gives you a board that will work much better in waves, and it has a lower price tag than the pro models to boot. This will allow you to still ride the sand, save some cash and have a board that if you dont break,(learning to get into waves is going to put a lot of stress on the board) will last you a while. Still look around and see what you like and what you can afford , but keep in mind that it should be at least 50 inches and have a full tail, go through some skimboarding sites and see what pops out at you, but remember what you are looking for in a board, you may find a board that is so awesome you almost can't pass it up, but if its too small, has a fish tail, or isn't that right shape, it's a waste of money.
Have a blast my firend, and keep skimming, it's the only thing that gets me through the work day.... when there isn't an surf.
peace braddah
Crescent College Ad-zap Performance @ MIT
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