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Thread: RC Surfer


  1. #826
    Jimi Findrix's Avatar
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    RE: RC Surfer

    Another thing guys,
    I am sure you all realise, that what works fine in the serenity of a pond WILL NOT necessarily work for me in the waves I am operating in.
    The ocean waves are beautiful but they are also VERY POWERFUL and destructive.
    Reefs and sandbars can often be just inches (Literally) under the surface. (and in some cases, even penetrating the suface in some places)
    One good dump and damage can easily be incurred.
    So I guess what I am saying is the harder you push these little rockets and the bigger the surf you try to operate in, the stronger your setup is going to need to be.
    Why do you think Maui RC Surfer was started? My guess is to create an RC Surfer that can not only Surf well in Hawaiian Juice but one that will physically survive the punishment.
    Achieving a consistently reliable setup for an RC Surfer that is being operated for 2 to 4 hours on a daily basis in real surfing conditions is challenging to say the least and is a continual process of trial and error and Damage and Repair.

    So testing in the pond is fine if you just intend to run the model in ponds. Minimum damage and minimum danger.
    Test in small waves if that is as far as you are willing to go with it. Occaisional damage and a small amount of danger.
    Test in big waves if you really want to shred some faces. Maximum damage and maximum danger.

    Oh yeah, speaking of danger, about those big fish with lots of teeth, if you have Seals at the beaches where you live, just remember, very big sharks eat seals.
    WHITEY LOVES MUNCHING ON THEM.

    So just remember to be very careful operating at the sea.

    JIMI
    Western Australia
    My work here is done !

  2. #827
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    RE: RC Surfer

    Hey ! The lipo's I'm using are for an airplane, so they are not hard packs. They may not be the best choice, from a safty point of view, but I have used them in cars, boats, and an rc jet with no problem. The batteries are Turnigy 2200mha 11.1 volts from Hobby King. They are about 1.5-2 years old and cost under 20 dollars canadian each !! They work great for me, but I have not used any other brand of lipos, so I cant say how they rate compared to a better/ more expensive brand.I tried to fit the 4000 mah lipo I have but it wouldn't fit without some battery tray mods. I might do that later. If you are using a real Kyosho surfer,you might not want to ruin it, butI'm using a cheap NQD model so it dosen't matter. I would love to see video of a shark attacking a RC surf board. That would be awesome! See ya.

  3. #828
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    RE: RC Surfer

    I'm about 3-3.5 hours ( depending on the amount of speed traps ! ) away from Tofino. I have never been there, but know many people who have. Knowing the climate around here, I'll bet the water is stinkin' cold , but apparently the surfing is fantastic. The waves look kind of nasty for the little surfers. What scale are they anyway ?

  4. #829
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    RE: RC Surfer

    Cananzi, Give me a call and if you want we can sort out a time next week to catch up and I can show you everything you need to know to get your surfer set up properly and how to maintain it.

    My number is 0402 257 118.

    Hear from you soon,

    Seb

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    RE: RC Surfer

    thanks seb!


    guys what lipo charger should I get? im totally new to brushless i have always had nitros.
    Goldcoast Rc surfers
    http://goldcoast********s-com.webs.com/
    youtube channel
    http://www.youtube.com/user/CananziRc/videos

  6. #831
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    RE: RC Surfer

    I'vegot a Graupner ULTRAMAT 16 -can be connected to acar battery or to AC-supply - up to 8A charging current - perfect!
    Thereseems to bea Graupner dealer in QLD:

    http://www.graupner.de/en/service/dealer-search.aspx

    DARKE HORSE MODEL SUPPLIES
    824 Kingston Road
    4131 LOGANLEA - QLD
    Tel.: 0061732006082
    Fax: 006738056038
    Email: jdarke1@tpg.com.au
    Homepage: www.dhmodel1@tpg.com.au

    Take care!
    Rainer

  7. #832
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    RE: RC Surfer

    Cananzi,

    Hold on to your cash and don't buy anything until we catch up. Everything you need is on eBay and half the price than in the shops. I will explain everything you need to know and buy. Call me on Monday ok.

    Seb

  8. #833
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    RE: RC Surfer

    Hello Crew,
    I have 2 x HPI AC/DC Patrick chargers (made by Muchmore) they have worked very well for my NiMH packs.
    2 x Muchmore Cell Balancers arrived in the mail yesterday.
    They dock straight into the outputs on the chargers.
    The chargers were $99 each and the balancers were $49 each, I think.
    I would recommend these to anyone but I am sure there are plenty of other great options, just shop around.

    4 x Turnigy 7.4v 4000mAh LiPo's @ $18,00 each (I can't believe the price) arrived in the mail today and I had Deans plugs soldered on this arvo.
    The first 2 are charging now, I can't wait to test the board with these little power packs sitting up the back.
    They are way lighter than the NiMH, so I am seriously wondering how the weight change is going to effect my boards performance.
    One thing is for sure, it will be different to operate in the surf than what I am currently used to.
    Hope it all works out for the better.
    JIMI
    My work here is done !

  9. #834
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    RE: RC Surfer

    Hey Surfer Dudes,
    When starting out running your models in the ocean it is probably best to look for waves like this.

    Bob took this pic last weekend at tiny "Pages" and even at this very small size it is still great fun.
    The sand is just inches under the board and the waves break treacherously close to the rocks.
    The waves actually wrap 180 degrees around the end of the groyne then run along a sand bank for 20 to 30 metres (when it's bigger) into a little bay.

    Keep on shredding everyone.

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    My work here is done !

  10. #835
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    RE: RC Surfer

      I use  "Turnigy accucell-6 " It will charge NiMH, NiCd, LiPo/ LiFe, and lead acid batteries.  I use it to charge every battery I own. It will tell you how many milliamps you put in a battery, so you know how much you drained out of it on the last run. Great for calculating run time with Lipo'sremember not to drain them all the way. It came with just about every adapter known to man, but in typical Hobbyking fashion, no instructions ! You have to download them. No big deal.  A year and a half ago, I paid 37 dollars for it new.  It will charge 2s-6s Lipo packs, 1-15 cell Nicd or Nimh or 2-20 volt lead acid . I use a AC/DC adapter so I can charge from the car, or the house.

  11. #836
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    RE: RC Surfer

    Maui RC Surfer you really are "Legends".
    Building boards from scratch, that is serious dedication.
    And...
    They surf sooooo good.

    You must be more addicted to doing this than I am.

    JIMI (West Oz)
    My work here is done !

  12. #837
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    RE: RC Surfer

    Swell has dropped down to 1 - 2 foot, there is weed everywhere after the big swell a few days ago.
    Ran 6 packs this morning in small clean beachies at "Tarcoola Beach".
    The only place we could find clean enough with decent shape.
    This was our first time there.
    Dude caught some great waves.
    Should have a few pics coming shortly.

    Hope they are good.

    Didn't use the LiPo's yet, still have to suss out the ESC settings.

    Sea Ya
    JIMI (Gero W. A.)
    My work here is done !

  13. #838
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    RE: RC Surfer

    Hi Crew,
    Here are a couple of pics Bob took this morning.
    Great fun, but only very small faces.
    JIMI
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    My work here is done !

  14. #839
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    RE: RC Surfer

     Great pictures !  I love the third one with the dude in the air. That rules !  Good point about how each of us builds his board for it's intended purpose. You are right.  I'll take choice B small waves, small damage/danger, for now . But.....getting air would be cool.

  15. #840
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    RE: RC Surfer

    Yeah Mate,
    Everyone loves the big airs.
    You will be doing big airs too.
    Just hammer straight at the wave and hit it just as the lip throws over.
    The fast forward momentum of the board combines with force of the lip coming towards you and "UP HE/SHE GOES".
    You just need a nice light offshore wind and a couple of feet of wave face.
    If you hit on a slight angle they do these amazing "Torpedo Rolls".
    You can even surf fast along a wave and as it starts to barrel drive up under the lip and the board will fly high into the air do a complete roll and land back on the wave face and keep surfing.
    There a quite a number of different types of airs you can do.
    The bigger the surf, the higher they will fly.
    It is sick fun but of course it can take its toll on gear.
    Have fun.
    JIMI
    My work here is done !

  16. #841
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    RE: RC Surfer

     Seeing how high your surfer dude was  emphasizes the need for stout equipment. I assume that a couple of bad falls from that height will point out the weakest part of your rig  pretty quick. The need for a robust rider is quite apparent. Has anyone ever lost a rc surfer to any ocean critters?

  17. #842
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    RE: RC Surfer

    Not that I know of.
    My work here is done !

  18. #843

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    RE: RC Surfer

    Hey guys
    Epoxyed lisa's arms and legs today and painted her up (short arm steamer) its a bit rough but i will see how itselfrights andwhether I wantto get a DUDE.

    Im a painter n decorator by trade so i got the idea to use a smooth surface etch on the plastic before I Epoxyputtiedthe water inlets in and put a coat of laminate over it. The smooth surface etch is amethylatedspirit based paint , Ihaven'tcome across anything ithasn'tetched to yet!Iwill let ya's know how that goes.

    I GOT THE SHAFT OUT!!! drill small holes threw the adhesive and it popped out easy.

    has anyone ever thought about putting a layer of 2oz cloth round the whole board or will that add to much weight?

    cheers brett


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    Goldcoast Rc surfers
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  19. #844
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    RE: RC Surfer

    Hey Mate,
    Your chick surfer looks so much better than the stock ones.
    I reckon flesh coloured paint on the arms and feet would look even better again.
    Just to get rid of that cheap plastic look.
    Great work.

    I have 4 chicks but I don't use 'em.
    I might paint 'em up nice like yours one day, just in case I ever run out of usable Dudes.

    As for self righting, I currently use 128g of lead (3 Spoon Sinkers) but instead of being stuck on the outside of the hull, they are placed carefully inside the compartment.
    50g taped under the motor, 50g taped to the right side wall and 28g taped to the front wall.
    This is my latest ballast arrangement.

    I have recently changed it because of the effect caused by changes I have made to the footpegs and Dudes.
    I ran it yesterday in extremely strong offshore winds and it still self righted every time.
    I prefer this approach because I can experiment easily and take them out or change them up or down a size.

    The one on the right side wall is to counterbalance the extra weight on the left side of the surfboard a bit, which I think is caused by weight of the ESC and perhaps the shape of the Dude.
    Whatever the cause is, without the side ballast, my board leans towards the left side when floating.
    So this balances it a bit better but it still has a slight lean to the forehand side of the board.
    I don't want to add any more because I know it will start to effect runtime too much and the board is surfing very well as it is.
    I have found this to be an easy way to experiment with different weights and make adjustments needed because of the other changes I have made. (Wingnuts & Carbon Fibre Dude)

    THAT IS WHY I DON'T NEED TO GLUE ANY LEAD UNDERNEATH.
    It is carefully installed inside around the motor.

    Now, when I change over to run on LiPo's, I have a feeling the balance I currently have will change and my ballast arrangement may have to be adjusted.

    I have reprogramed the ESC for 2s 7.4 and set the cutoff threshold to 3.2v/cell.
    Do you think it would be better to change to 3.0v/cell?

    I also see that my chargers will automatically cut off at 2.8v/cell if I discharge LiPo's.
    Please let me know any suggestions on what cutoff threshold is most suitable and why.
    My ESC has these options 2.8v/cell, 3.0v/cell, 3.2v/cell and 3.4v/cell
    My work here is done !

  20. #845
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    RE: RC Surfer

    Hey guys,
    Hre is a few more pics Bob Fawcett took this morning.
    And a great one of him surfing on a recent trip.
    Awesome!!!
    Not only does the guy take great photos.
    The guy surfs like a pro, and he must be a year or 2 off 50.
    His daughter charges in very heavy world class surf @ Jakes Point, Kalbarri and his son is a local boardriding legend who does massive airs like an RC Surfer.
    Go the Fawcetts.
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    My work here is done !

  21. #846
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    RE: RC Surfer

    jimi

    i think for 2 cell i use 2.8 and 3cell i use 3.0 cut off but i would ask seb, anything about elecitriones he has tested or knows becareful not to set it to low can hurt the cells. you are going to have more power so start off easy on the triger at first. jimi i am amazed how fast you have come to top of RC surfing i think you are the man, and i cant wait to see what you do next , keep up the good work


    john from maui
    BUILD IT YOUR SELF ,I DID

    owner of maui rc surfer

  22. #847
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    RE: RC Surfer

    Jimi - when I reply to your email you have been sending, it is returned back to me ?

    says cant be delivered.

    anyway, bob has great stlye, and that wave isn't to bad either !!!

    John

  23. #848
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    RE: RC Surfer

    Jimi,

    You are so lucky with the surf and weather conditions. It has been raining here solidly for many weeks and have only been able to hit the beach a few times.

    In regards to your esc setting for lipo, I used to set them to 2.8V on the 2 cell 5000mah lipos, and 3.2v with the 3 cell 5000mah lipos. It is recommended they not be run lower than 3v a cell or you will damage the cell. I did notice that when I did run the 2 cells on the 2.8v cell cut off, when they did eventually run low (you will know this as they will run at about 20% of full power) the cell reading was 3.10-3.30 a cell. Anyway, best to set it to 3V and it will cut off when one cell drops just under, it will save your lipos in the long run.

    I bought (years ago) 2 lipo chargers (they balance also, which is how i charge themevery timeanyway) for $40 each off eBay. They are great and having 2 gets me back out to the beach much more quickly when the surf is good all day. Grab an balancing cable extension so you can charge them in a lipo bag or a metal container as i do, so if there is a problem they will not burn down your house. I think too much fear is pushed onto those who first start using lipos with concern over exploding lipos. They will only blow up if you charge them on a non lipo setting such as on NiMh or NiCD for 10 hours.

    You will be glad you made the switch to Lipos, they perform so much better than NiMh batteries and you can charge them again right after using them which is very bad for NiMH batteries. Plus they are lighter and will give you the Amps your motors needs to run faster! Mine are huge and weigh 420g, but the power and run time is great. My surfer weighs over 2kg, but it goes under the wave after a pounding an pops up behind the wave, where my home made surfer will get washed up on the beach as it is sobuoyant.

    Your lucky to have someone take photos of your every session, you need to give them a video camera!!!!

    Keep the pics coming!

    Seb

  24. #849
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    RE: RC Surfer

    Hello everyone,
    No surf today, small, weedy and onshore everywhere, so early this morning Bob and I went down to the marina to see how the LiPo's go.
    I couldn't believe the extra punch.
    I just chucked it in and floored it as usual and the board just started jumpin' out of the water on 3 - 6 inch shorebreak.
    I see what you mean by "Go easy on the trigger".
    We were blown away by how fast and powerful the board is now.
    We only ran 1 pack and headed back to Bob's workshop to weigh in.
    The board with current ballast, 7.4v 4000mAh battery and Carbon Epoxy Dude weighed 1.906Kg.

    Yes, I am extremely lucky to have teamed up with Bob, although I have seen him around over the years, I only really met him recently when he heard what I was doing.
    He is as stoked to be doing this as I am.
    I gave him a little drive this morning for the first time, I think he was a bit nervous 'cause he took it pretty easy, I was telling him to go flat out, then the pack cut off so we left.
    I wish he was at every surf session, but because of his work commitments, I have been getting dozens of "Really Incredible Waves" when he is not around.
    Luckily he is keeping in touch and keen to do a lot more when he can.
    Thanks for all the encouragement and info guys.

    I have another cool pic from yesterday for ya's.
    Sea Ya.
    JIMI
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    My work here is done !

  25. #850
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    RE: RC Surfer

    Oh my God,
    I just ran 4 LiPo's in solid 3 foot waves @ "Shorebreak".
    Strong offshore winds and very low tide made for some extremely damaging powerul surf conditions.
    The LiPo's just pumped through it and the difference is unbelievable.
    The same board on NiMH would have struggled to get through the soup in the shorebreak.
    The carbon Dude is showing no signs of stress either.
    A standard Dude would probably have come home busted up.
    What a difference, I just can't believe the extra power.
    This just took everything to a new dimension.
    And Airs.....
    The Far-king thing does airs off anything and everything now.
    Absolutely Incredible.
    I LOVE LIPO.
    JIMI
    My work here is done !


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