50" Hydro Build

[Make-a-Wake]

Hey guys, wanted to get a BIG Hydro, and went ahead and got this big guy. Thought i'd share the "build" which should take a few weeks maybe.

Components to be used (although input is very welcome!!)

Motor - Castle 2028 780kv
ESC - Sworfish 240HV
Batts - 6 x 5000 40c 3s batts for 9s2p.
All hardware came with the Hull
1/4" one piece flex with tapered shaft of 5mm(i know.....)
Going to use a 5mm to 1/4" adapter to run a 1/4" prop

Hull is built very well in my opinion. Big sturdy stringers already installed, waterproof radio/servo box, and nice push/lock pins for Cowl.

Thanks for looking!!


Pic next to my 28" Elam for comparison

[LarrysDrifter]

Nice.Cant wait to watch the build.You gonna bring this to the Shootout this year?

[Make-a-Wake]

Thanks, when is it exactly? I tried a link to last years shootout, got a new one possibly? Wonder what this boat will do speedwise..............guess i'll find out in a few weeks!

Thanks Larry!

[LarrysDrifter]

I dont know the exact date.I pretty sure its in August though.My buddy Johnson on here knows the date.Where are you in MO?

[johnson22456]

The shootout is a week long event. The mini shootout for Rc boats was held on thursday of that week. This year it will be august 22-28. Here's the link I'm sure there will be more info later in the year.

http://www.lakeoftheozarksshootout.org/

[Make-a-Wake]

I dont know the exact date.I pretty sure its in August though.My buddy Johnson on here knows the date.Where are you in MO?

Due south of you my friend............cant seem to find any info on the "RC" part of the event. Where do you look for it on the site???

BTW..............the 78mm prop is now 66mm.............closer to the realm of reality i think.........gonna try it out. If too much, may try a 457/3..............have to bore it out just a hair though.

[johnson22456]

They took the 2010 site down after the events. They had 6 classes last year cat/hydro single, twin and unlimited, and the same for monos.

Here's a thread on midwest boat party.
http://midwestboatparty.com/forum/sh...mini-shootout&

[johnson22456]

Just found it.

http://www.lakeoftheozarksshootout.o...ishootout.html

[Make-a-Wake]

Thanks Johnson!

[Make-a-Wake]

The cockpit is extremely large, and i will easily be able to put the six 3s 5000's in there to keep weight up front, pic is of a 3s 5800 with tons of room in front of it.. Sponsons are quite straight and free of imperfections/low spots. Pic of the Stock prop in its prior 78mm size(66mm now) compared to an x645.

[LarrysDrifter]

It a big one thats for sure.If you ever come our way,we can run together.Id sure like to see this one live.Big boats are where its at.

[old guy]

I would like to know the speed of this when done

[Brushless55]

Very cool!
what hull is this?

[Make-a-Wake]

Thanks Larry, old guy and Brushless:

I ran across it on Nitrorcx looking for a brushless motor for my sons buggy. They have some really decent looking boats, especially for the price...............probably all knockoffs, but i have heard of others racing some of these hulls with good results.

My big'n is obviously a gasser...............had a "zenoah" type engine......bought it as the "kit" and said it wouldnt come with any propulsion components.........came with the muffler, gas tank, motor mounts and a few more bits.....................lazy buggers just popped the engine out.

Its built very well in my opinion............im in there modding the gas tank area for the batts and adding more epoxy to joints and such right now.

Link to the boats on RCX - http://www.nitrorcx.com/boats.html

[martno1fan]

Nice project ,ill be watching with interest as i might have a go at making one of my Comet hydros into an electric,shes 50" also.Look forward to seeing what you come up with.First ill be getting my feet wet with a large mono im going to be producing then ill give something faster a go so ill be watching with interest and taking notes lol.
Heres a cpl of pics of my Comet.
Mart

[Make-a-Wake]

Nice Hull martno!

[martno1fan]

Cheers mate,
im fairly new to fast electrics most of my previous builds have been Gas and a few nitros.Fancy trying a large electric so all my gas gear is been sold off to help fund a cpl of builds lol.Good luck with yours it looks like a nice hull.
Mart

[madgadget]

I'm going to try something very similar and will follow this with a lot of interest. Going to take me more than a few weeks but I'll be going to the shootout with or without a boat to race. I was going to convert the segad in my avatar but I'm going to try an aeromarine hull instead. Good looking hull btw. Mike

[Jeff Wohlt]

If we get good water for the run the speeds will go up over last year. I think a larger cat is the way to go..40+" with twins. 8S. They only hit about 60 mph last yr.

I may have one there or I will be building one with a local down there to put the heat on the gas boys....they won't even come close...LOL.

I would think Castle would like to be involved! Joe????

[LarrysDrifter]

Ill be bringing my 37" triple down to boogie with the fuelers.

[Make-a-Wake]

Did a little modding to the gas tank area. It now fits four 3s 5000's perfectly by removing just a few pieces of ply. The other two 5000's will go up in front of it.

Also did some epoxy reinforcing to the stringers and on some areas that didnt have much or any epoxy at all.

Added a bit a bling with some striping.............

[madgadget]

Curious as to how much the hull and hardware weigh and projected rtr wt. Should be good baseline nfo. thx Mike

[Make-a-Wake]

Any suggestions for a prop on 9s2p.................i'm a bit apprehensive of just running it right off the bat with the big 66mm..................has some pretty good pitch.

Should i start with an X series...........55-60-mm...............?????

Thanks

[madgadget]

Should i start with an X series...........55-60-mm...............?????

x 655 de tounged to start imo

[Make-a-Wake]

Thanks madgadget, all i have at the moment in the "range" are an x450, an x460, and the stock 1.4 x 78mm cut down to a 66mm. May try the x460 first.............

Still trying to accumulate all the electronics, the SF240hv should be here in the next day or two along with servo's, 8mm bullets, couplers etc................

[madgadget]

Are you going to let me know how much the hull and hardware weigh? It will go a long way to helping me decide my setup. 1p or 2p HV or LV etc. thanks,
Mike

[Make-a-Wake]

Sorry for the Late reply..............had to find a way to weigh it. Hull with only hardware weighs 11.6 pounds.............kinda suprised me. Im gonna have a 3 lb. motor and 6 pounds worth of batts in it............whew!

Motor should be in Saturday along with the SF240hv. In the meantime i went ahead and made a beefy RX pack out of an older 6 cell sub C pack. It should do the job as i will have twin Traxxas 2056 servo's.

[old guy]

I would like to know where the C/G is when you are done RTR

[TotalPackage]

I might step down to 8 s bring the rpm down a bit and try a 457 460 just a thought maybe even down to 6 s 2p and a gas prop . Never did it just sounds better for that big hull.I know we all talk about weight alot but as fast as people are running now I think u need some weight . The only advatage I see to a light hull is you can put the weight where u want it.Thats under 20 pounds so its not too heavy I dont think.

[Make-a-Wake]

Thanks guys, I'm figuring right at about 22 lbs with everything.............. a delivery attempt was made today while i was at work Another day to get the goods.......... The motor may arrive tomorrow as well................man, i wanna get some stuff in this beast.............tired of just staring at it!

I could try 8s with a 3s x 3s x 2s, never thought of that.........i have the matching 5000 40c's of each. I have to get the x460 bored out to 5mm........just takes a hair more but dont want to do it myself and get it off center, think i'll run it by a tool and die shop i have used for shaft work before and slip 'em 5 bucks.

I dont have a data logger, and those i have seen are good up to 100 amps, i want this thing to pull right in the 180a range and need to see what certain props will do instead of the old "hold full throttle and see if the speedo blows" method. 180 amps should give me about 8 horsepower on 9s. So i may start with the x460. Since no logger, i may have to go by the seat of my pants.