ETC... thats what i have... two of them

It looks like you are using plastic tubing to cool the motor-does that work well? I don't bother cooling mine but I only run 6 cells.Nice job so far-the compartments are cramped on the Predator especially once the deck is on.I built a little platform over the stuffing tube to mount the receiver.[8D]

well, the only way to know is to find out! BTW, its clear PVC flexible stuff (from an aquarium cleaner), and it lets a lot of water through it. as far as cooling is concerned, I will probably also end up running 6 cells and the motor's previous boat didn't have any cooling for it (it has an internal fan though)

about that ford bashing... with the price of fuel these days, I think I might as well stick to Honda

back on topic... I experimented with some fiberglassing today (first time), but since I only had epoxy, I used an old undershirt for the material. I think it turned out fine, I might add some pink insulation foam to it for a bit more stiffness - OH, forgot to mention, this is going to be the canopy...
I also attached the other sponson and put in all of the electronics, now all I have to do is make a rudder and linkage, primer and paint, then test it on the water!

First
On
Race
Day

Which is what we are interested in!

Ryan

Hehe, mine weighed 2.2kg, and still won a race with a stock 540 brushed, 15 mph. Hopefully with something brushless and some liPo's, it will be a bit quicker and lighter lol.

Hmm... I haven't really been worrying about weight with this project, but I did do a weigh in out of curiosity...

so far with everything except the rudder and steering linkage, the boat ways in at 1pound, 15ounces (about 870g)
The ballance is right behind the sponsons, and the boat feels and looks very nice now that both sponsons are on and aligned. Then only thing that I am a bit worried about is the floatation of the hull. I can't realy envision how its small displacement will keep some 2 pounds afloat. Am I just overreacting or does it realy have any flotation issues? for those that have built the boat, where would be the normal waterline for it?

Now I am making a rudder - I just want to know what dimensions work well (I am also running a standard servo, will it be enough torque? its futaba S3003)

Water line on the hull has no effect to performance. When on plane the water line will always be similar. A boat that sits deeper in the water does not mean it will be slower.

Rudder - Around 2-1/2-3" x 1" will work well.
40 oz in or greater will be more than enough. A standard servo is a bit large but will work.

Don't worry so much about weight.

Ryan

Ok, thank you!

my first boat (airboat) was too big and heavy for my motor and electronics and couldn't get on plane to well so that is why I am concerned about weight. I guess that water props are more effective at propelling things in water than air props

I think I will lay down the servo and run a flexible bike brake linkage wire to the rudder. Its going to be a short connection so there should'nt be too much added weight (yeah, I know you told me not to worry about it... its kinda a mental thing... must stop! [&:])

this morning i broke 110 mph i have a heavily modified predator with a single 800 size motor and two 5000mah lipo final speed was 112 on the gps. man that thing freaken suprised me this morning i had been tinkering around with some hydrofoil-like turning fins i guess i got it just right cause the entire front end was floating above the water.

Interesting

What motor
What ESC
What LiPo's
Which prop

Ryan

Failure
On
Race
Day

Just kidding...but once apon a time a long long time ago Ford may have dominated...I do not know.

Bahaha. at least the new guy has a sence of humor.
strike one for the new guy.

Wow similar speed to mine. i got 112.1. Except i was running dual 380's and it has vector steering[:-]. I hear thats the best way to get past the 100 mark. My hydro with zip zap motors is now in the low 70's but i think it has more potential. Maybe 80mph by this weekend.

BTW: i was wondering what car it was in?(no way it was a ford, it would fall apart at 75)lol

OOO you must mean scale speed

he said GPS said 112...lol
thats not scale speed thats actual.

thats after he multiplyed it

I do not think the plastic tubing will conduct the heat between the water in the pipe and the motor (I use the aquarium tubing also for my plumbing to my motor coolers)
Try using aluminum pipe around the motor it will work better

PS just do not put Cadillac on your boat cause it will spend more time in the repair shop than on the water

Wow we are all rippin on all the car companies. I must admit, i have had the best luck with pontiac
PS: i drive a chevy and its a peice of ****

pontiac is very good surprisingly. my sister is ordered the new G8... i saw one last week.. it was red.. well hell it saw me too just about drove into me taking a bend
David. the one boat that failsl on me does not even have a cadillac logo on the side of it.
my car is very reliable and dependable. More so then you PT loser. which is newer BTW compared to my older lac.

man you almost got hit by a g8 . are you sure you dont have a bulls eyes on that car . i seen a cople weeks ago you had a ding in your door .

Yea...the Pontiac G8 replaced the GTO. The G8 is a very powerful and nice looking car. Sorry for the highjack.

i have two lacs

Excellent skills there slippery, you have just waxed the recent record set by the Germans for a 2S powered boat.
http://www.rumrunnerracing.com/fefor...ad.php?t=26373
A bit more adjustment and you just might take Joerg's record.
Keep your hand on it

NOW FOR THE IMPORTANT STUFF

ISIRC10
How your boat coming along ??

well, glad to hear you ask... I haven't gotten anything done on it because of soccer tryouts for the school team. for the past week there were sessions from 8-12 and 4-6 every day and you had to go to all of them... I usualy came back tired (we ran an average of 6 miles a day) and just plopped down on the couch and ate...

all that time didn't go in vain, because I made the JV team, but now it will be even harder to find time to work on the boat. I'll have to finish it up in the next few weeks because of school, but as the soccer season progresses, there should be less lengthy practices. [8D]

Well, Ive found some time to work on the boat, reconfigured the cooling system a bit, had some fun bending tubing (I actually learned a lot!)

I stabilized the stuffing tube a bit, mostly for looks. Decided to ditch the glass-shirt cowl, went with a plain ply and balsa one instead. The rudder was by far the hardest to make, it is fairly close to a true wedge, that took a lot of elbow greese (a plain ol file is all I have to shape metal)

next I need to make a stand for the boat and glue the top deck on. then its preping and painting. I have decided to say goodbye to the honda stickers and will use leftovers from my T4. Team Associated should realy start making boats!

but before all of that, I have to connect the rudder linkage.