My First Boat?

[Rumdog]

All 3 will cost about the same to run. All use 4s. 2x2s packs. They are good handling boats. For me, I'd go with the PB Mystic or the Impulse.

[chaddlee1978]

battery packs

what is the biggest size lipo battery that I can put in the mystic and impulse 31? What is the top speed of both right out of the box. And what makes you choose mystic and impulse 31 over motley crew and geico?

[Rumdog]

Not sure on exact top speed. The mystic may have a tad more straight line speed being a cat. The impulse will do a little better in chop. The mystic comes with an offset rudder that will make it handle better than the geico with inline. Plus, no corny lizard in a bikini. The crew is a good boat as well, but most have issues with fit and finish.

[Bullwink]

I have run my Impulse with 2 - 4S 5000 Mah Gens Ace Hardcase Lipos (Big Suckers). The Impulse has a very cool battery holder (A plate on top that tightens down with a wingnut) I had to take the plate out to run the big Gens Ace batts. At the Winter Warmups I raced the Impulse with 2 4S 4400 MAH Hyperions with the battery holder plate on them I have only had it a couple of weeks but I love it.

[chaddlee1978]

I thank ya'll for your help. I been watching and watching videos like crazy and all these four boats are pretty fast. I do like the way the catamarans look. I love watching the boats throw the wake behind them. I have also been trying to understand what all these terms mean when ya'll mention them such as prop, and prop shaft and etc..I need to learn more on batteries too and what the numbers on them stand for such as "C" and stuff. Hey, how come these boats do not have a fastener on the lid to keep it from coming off instead of using tape to tape it on. It seems like the tape would come off as soon as it gets water on it. I just curious.

[sailr]

The "C" rating of a battery is pretty simple. For example, a 5000mAh battery is actually 5 AMP capacity. If the battery has a "C" rating of 20 (20 x 5), that means the battery can supply 100 AMPS continuous. If it is 30C, it can produce 150 AMPS and so on. The higher C ratings also produce more initial "punch" out of the hole.

So... If you have a motor/prop combo that's gonna need to draw 100 AMPS continuous, the LEAST battery you can get by with is a 20C pack. However, it is MUCH wiser to go for a 30C and I'd recommend 40C because that gives you a "buffer" that will prevent your battery from puffing up or prematurely failure.

Hope that helps.

[sailr]

Some boats do have some sort of fastener to hold the hatch on. HOWEVER...and this is a MUST with electrics.... you must also tape the hatch to prevent water from getting inside the boat which can inevitably blow your speed controller, cause the receiver to quit, andd most likely the servo will fail also. The water doesn't hurt the motors and generally won't hurt the batteries either.

The BEST tape is the hockey tape sold on the OSE website:

http://offshoreelectrics.com/proddetail.php?prod=hatch-tape

It sticks like mad but won't leave a sticky residue on your boat.

[chaddlee1978]

I learning. I thank ya'll for the help. It does make sense too about the tape. I have some more questions about chargers. I kind of confused on something. If my charger will only charge up to 10 amp and there is a battery that is 5000 mah, but can charge up to 3c what does this mean and is the charger up for it? I know the higher the number the "C" is as far as charge rate the quicker you can charge the battery but getting confused about what my charger can charge based on these ratings. Sorry for so many questions. I am leaning on the mystic 29.

[srislash]

Do you mean the battery can be charged at 3c?The charger is only 10 amps which is 2c if it will do that.There are high amp chargers but they are $$.Is your charger capable of charging more than one battery at a time?

[chaddlee1978]

My charger will be able to charge two batteries at a time

[chaddlee1978]

My charger will be able to charge two batteries at a time. Yeah.. will it beable to charge up to 3c charge rate?

[srislash]

I doubt it.It would do a 1c rate.Like I said,charging at the higher rates is $$$.And is useful if you are at the lake/race.Myself,I charge at 1c and have batteries.Charge at home and just take batteries.

[chaddlee1978]

I thank ya. Yeah, i will start out with two batteries and I will probably need an adaptor so I can charge my batteries at the lake using my vehicle battery or should I buy a smaller battery to do this?

[srislash]

Most chargers run off 12 volts .You should have red and black inputs on the charger and you would use pin/banana connectors to alligator clips to go to the battery in the vehicle.Your charger probably came with these. What kind of charger is it?

[chaddlee1978]

I have not gotten one yet. I was researching on some chargers. I just saw a video on the hitec x2 multi charger.