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RC Surfer

Old 11-07-2011, 11:09 PM
  #3326
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I need to buy some batteries...

Does any one know the differences between 25-50 C , 35-70 C , 45-90 C , and 65-130 C ?????

Which is best suited for the RC Surfer??

confusing[sm=drowning.gif]
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Old 11-08-2011, 12:44 AM
  #3327
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Default RE: RC Surfer

the higher the c rate the better, basically buy the highest c rate battery you can afford.

ill try to explain a little

the c relates to how many amps can be drawn from the batt at any one time. and is worked out like this.

a 5000mah batt with c rate of 25c can output a max 125amps theoretically thats 5000mah or 5amp X 25c = 125

a 1000mah batt with c rate of 25c can output a max 25amps thats 1000mah or 1 amp x 25c = 25

and so on

a 4000mah of 70c = 4 x 70 =280amp max discharge rate

basically the higher the c rate the less hard the batt has to work.

dont know your setup but ive had a meter on mine while running and peak amps was over 90.

ive read its recomended too only be using approx 60% of batteries max discharge rate and 50% is better

today i ran 2 X 3000mah 40-50c batts in parrallel, this equates to 6000mah at 40c so 240amp max discharge rate and they still got warm.

however i also use a 5000mah 25c batt without any prob it does get quite warm though.

hope this helps

later
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Old 11-08-2011, 12:50 AM
  #3328
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Default RE: RC Surfer

also check out this thread has alot of good info post 11 is about lipo

http://www.rcuniverse.com/forum/m_90...tm.htm#9069192
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Old 11-08-2011, 10:19 AM
  #3329
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kite man

make sure the brick you buy will fit in side your surfer the higher the C rating the thicker the batteries are john maui
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Old 11-08-2011, 10:21 AM
  #3330
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Kite- What Fishi said and the link are good info. Also the more C rating usually the higherquality of cell and also alittlebigger and heavier. I use 25 and 30 C 5000 mAh packs. Karl
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Old 11-08-2011, 06:05 PM
  #3331
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Kitekook,

The higher the "C" rating the faster you can charge and discharge the battery with out hurting it.

Search "C ratings and lipo batteries".
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Old 11-08-2011, 06:27 PM
  #3332
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opps, double post [:'(]
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Old 11-08-2011, 06:29 PM
  #3333
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Buy the highest 'C" ,
Make sure it fits,
and ask 'ol man Google...

Thanks every one, I knew you were the guys to ask.
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Old 11-09-2011, 05:42 PM
  #3334
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yeah my lazy ways have paid off either got water damaged reciever or servo or both. sponges just couldnt cope, oh well. back to the bathtub lol.
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Old 11-10-2011, 09:09 PM
  #3335
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Quote:
ORIGINAL: RC HAWAIIAN STYLE

kite man

make sure the brick you buy will fit in side your surfer the higher the C rating the thicker the batteries are john maui

maui john....with that potato chip board and that ultra small keel....that 5000mAh nano-tech battery fit???
which 'c' is it ?
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Old 11-11-2011, 12:45 AM
  #3336
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hey fellas


had a great lil session this arvo ..ran 8 packs problem free and dry as a bone inside.stoked to finally have a reliable board. I actually dropped back to using 3s lipos and find it way better. hitting it in the morning at burliegh again cant wait. hope yas are getting waves!!

those escs i brought.................absolute crap!!! one over heated and one died all together. I put my turnigy marine series esc  back in and it ran perfect.
you really cant beat those escs for price and performance, i wont be buying any other escs ever again lol

have another board that im doing atm pretty much the same as my other one but rounded pin tail and slightly thinner and has more nose rocker.

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Old 11-11-2011, 02:20 AM
  #3337
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burleigh gets some great waves,do you go on the point. good to hear your board is sweet. will ya ever go back to the nqd? and what were those escs that blew.

kite on a 5000mah anything over 25c should be sweet.i used to use 20c on 2s, (which i would not do again, lower volts = higher amps. volts x amps = watts). thats 125amp max discharge. and those nanos are like 25-50c but i always just go off the lowest number.

later guys, camping down south at the beach and my board is stuffed .
stay dry.
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Old 11-11-2011, 03:10 AM
  #3338
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Fish

I just surf around Sebs old spot on the beachfront. the point is a no go zone the locals can get very pissed off lol

I was running 4s 5800mah 30c with 2800kv (89amps) 35mm prop and the new turnigy escs (120amp). at first i thought maybe the cooling was blocked in my board but i checked and it was sweet. I put the old turnigy marine 120amp back in and it was flawless not even hot at all. dunno what went wrong with the new escs but ill stick to the marine series i have never had a problem with them just thought i would try something different.

To be honest i would never go back to a plastic boards ever again...to much problems with water,theres literaly not one drop of water in my board at the end of a session with the fiberglass board.i would even feel safe not even putting my reciever in a baloon its that tight.

seems like alot of work for a fiberglass board but its around about the same amount of work as a plastic board with mods.

bummer about ya board mate,maybe you shiould have a crack at a full custom i bet you would make a awsome board.
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Old 11-11-2011, 03:04 PM
  #3339
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sweet bro good to hear your custom is awesome, im up for one soon. far q nqd.

was that crap esc the aqua star. im gonna try the birdie 50 amp in a jet boat project my son n i got going on. like it says they are cheap cheap. as they dont come in a 120 i assume it was not the type you had.

was up on the goldie last week for family stuff, i kept an eye out hoping to spot you or seb.

post some pics of your board inside n out i wanna check your setup, or have you already.

cheers
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Old 11-11-2011, 05:41 PM
  #3340
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Saildoggie,
Do you want to try for this Sunday at Doheny?
Justin
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Old 11-11-2011, 06:00 PM
  #3341
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Justin, really want to but looking like I am taking the girls snowboarding at Mt. High, they both got new boards, boots and bindings, mounting Melissa's shortly. I have to go to sign the liability for their season passes.

Got a new hybrid flex shaft from Doc Curlz, really cool, solid shaft with flex just on the coupling end for about 5/8"
I will install the new shaft tube that came with the new shaft, been going through fits with bent shafts and motor hop!



Ireally want to get that speed control from you Justin, may have to wait a week, looks like a big storm coming in!
Maybe see what the weather looks like tomorrow Justin!

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Old 11-11-2011, 06:14 PM
  #3342
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Mark,

Give me a call if you have any questions on the new set up ...

Curlz
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Old 11-12-2011, 12:53 AM
  #3343
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fish

yeah it was the new aquastar 120amp. i was going to try one of the birdies,let me know how it goes.

ya should of drop me a msg mate we could of went ran a few packs, if ya ever on the goldy hit me up.

yeah i already posted pics
this arvy i changed to a 1500kv turnigy on 3s running 37mm prop ....i got a runtime of 28mins!!! stoked!.

heres few pics from today it was a bit ****ty tho.

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Old 11-12-2011, 09:59 AM
  #3344
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  Jock-   Hows the rain.  Hope you have been doing good !!!   The guys at Puka Puka would like some more of the videos if you want to sell.
    Karl
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Old 11-12-2011, 03:31 PM
  #3345
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cananzi

that ride leaves some mean spray ,do you get good speed with 1500kv motor ? john maui
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Old 11-12-2011, 03:34 PM
  #3346
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KH20


show us some pics of your new borad. john maui
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Old 11-12-2011, 05:06 PM
  #3347
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Saildoggie,

No problem on Sunday the snow should be epic go for it.

I still have the ESC and we can set it up when ever you have time.

This week was busy my mother-in-law passed away.

Justin
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Old 11-12-2011, 05:25 PM
  #3348
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Whoa, sorry to hear about your mother in law passing Justin, best you were home with family this weekend anyway.

Yes, the Surf Divas also turn Snowboard Divas this time of year, as Equipment Manager I must join them this first trip, bindings may need reposistioning on their new boards and somebody has to sign the Liability contract for their season passes!

Appears the beach weather will be improving next week, maybe do a Doheney run next weekend, installing the new flex shaft set up to test out, hope there is surf.

Want to find a blank or two to do some R&D on a custom board, love the way the NQD surfs but looking at something a bit different!

Off to the snow in the 'Morn!
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Old 11-12-2011, 07:53 PM
  #3349
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Cana would have def dropped you a line burst wss only quick visit and busy doin family stuff, l wayikewise if ya ever down this
very cool results with the 1500 bet accelleration is good too wad that on the 5800. .Did things get hot

will let yad know how the birdies go. when we get some

Laters
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Old 11-13-2011, 09:07 AM
  #3350
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kite



it fits great the boradis 1 1/2 thick , the brick is 1 1/4 john maui
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