Balaenoptera Musculus. Upgrades?

[seehuusen]

Hi Mason,

Cheers, I understand why you'd need a large pod with your setup... I never thought of that, so thanks for pointing it out
I'm not sure adding a pod to the back of the boat is a bad thing.
I believe, you can have positive effects by having a longer distance between the bow and the prop (in this case extended a bit behind the bow).
What it does is to make the boat act like a slightly larger boat (handling wise).

The suggested strudder (I heard that somewhere, stinger + rudder = strudder... LOL) would only need a pod of less than 20mm I'd say...
Could someone point me to a howto on how these drives are assembled? I find it a bit confusing with the different sizes, and some are the same diameter, but different names??
e.g. 1/8, 3/16, 4mm (which is also .150?) and 1/4 (although that just seems ridiculous in size?!?)

The part I don't understand is, how do I put my own "kit" together?
What diameters am I looking for?
I'm sure this is not as hard as it feels right now, but I've never seen it assembled, or dis-assembled...

Any help on this would be greatly appreciated :)

Cheers
Martin

[masonis1]

I have a 3/18 shaft in think, Shawn correct me... But I have the flex bent to come out the rear of the hull level. Do you have the hull yet

[masonis1]

Tht combo has a lip on the stinger tht you will need to build a small stand. Look for something tht doesn't need a stand, that would be easier for you I think.

[seehuusen]

thanks HEAPS mate :) really appreciated!

I get a 90mm rudder and a 50mm drive from your pictures, which basically means, I'll grab this combo, with the lot in it :)

http://www.ebay.com.au/itm/150926492...#ht_1485wt_906

That way I don't miss out on some little bit that I didn't think of
The drive, and the different components are still a bit unknown to me... I've never run anything with a flex shaft, teflon liners and outer stuffing tubes?..
BUT if someone would be kind enough to give me a guide as to what I need, that would be VERY appreciated :D

cheers guys!
/Martin

[masonis1]

So it's a 'Balaenoptera Musculus stripped down to bare hull, fill all the holes, I used paper towels and super glue, turns really hard and tight, then seal the hull, add supports. Make or get a motor mount, pretty easy I made mine, sheet metal and bent it and drille holes. Epoxy that in, I did it wrong and drilled and bolted it..., mount the motor with a good COG. Then you can epoxy a servo in or make a mount like mine. I'm going to try making a platform for a battery, esc, and receiver all up off the botom.

[masonis1]

ImageUploadedByTapatalk1351725936.084170.jpg
ImageUploadedByTapatalk1351725972.326954.jpg
ImageUploadedByTapatalk1351726005.932787.jpg
ImageUploadedByTapatalk1351726029.774280.jpg
Here they are

[masonis1]

I ran a 5300mah 3s, but that will last a long time. I think a 3000mah would last a good 6-8 minutes

[seehuusen]

Just making a list of the gear I need to purchase, got the boat in the mail already :D
Thanks for the stiffening tips, I'll add a couple of stringers into the bottom of the hull, that aught to keep it stiff enough

I hear that these are very light, and some of their riding abilities, or lack thereof, is because of that... What size batteries do you guys run? Someone mentioned lead as well?

I'll post some pictures and measurements of the rudder, prop, stinger, etc tonight

Really appreciated Mason! :)

[masonis1]

Sounds like you have it planned out, this boat can handle speed it seems like. For sure add transom bracing to stiffin it up and I would even stiffen up the sides in between joints. Mine are a little flexible.

[masonis1]

I'll post some pictures and measurements of the rudder, prop, stinger, etc tonight

[seehuusen]

cheers for your input guys :D

Mason, that's right you got donations, I did read that in your thread now that you mention it
Would you kindly take a measurement off the items? That way, I have a ballpark figure for what hardware I might need to buy

SRISlash, it is my understanding as well... Not to always drive on half throttle, I've found this out the hard way in my Jet boat...
Often you run that on a lot lower throttle, to match the speed of the current in the creek your running it... 2 ESCs later, both 80amps, I ended up getting the 5h|ts, and bought a good quality 120amp ESC, as you have to drive this boat on half throttle, now it all holds up great :D (120 amps for a 2848 3900KV motor!!! the new Jet boat I'm building is getting a slightly longer motor and 150 amp ESC!!)

Motorwise, I'm now thinking

On 2S - safe setup/ On 3S - wild setup
SeaKing 3660SL 3180kv Brushless Inrunner
(http://www.hobbyking.com/hobbyking/s...erCooled_.html)

On 3S - medium setup / On 4S - Wild setup
S3665-1800 Brushless Inrunner (1800kv) - I'll also need a water cooling jacket, ~$5-$10
(http://www.hobbyking.com/hobbyking/s...r_1800kv_.html)

Looking at prices for batteries, and the difference between the two setups, I'm sort of leaning towards the Seaking
I can buy 4000-odd mA 2S batteries, with 65-130C discharge for just over $30 at HK... The 4S setup is way more than that, and on my 5amp charger would take longer...
ALL of my batteries are 3S, so I'd still be able to test out the wild setup, definitely with a smaller prop though

Cheers
Martin

[masonis1]

I have a rudder and stinger from a guy that donated it to me for my build, I hade to make a stand for the mount. Mine was for a cat I think so get something that would go against the transom flat without a stand.

[srislash]

I woul t go that low. It's fun having the extra power when you want, just don't get too hard on it. I'm probably hitting 45-50 when I ease to full throttle.

It is hard on the ESC to only go partial throttle all the time.Just sayin'.

[seehuusen]

what do you reckon about the rudder/ stinger drive I suggested?

[masonis1]

Try that but 4s is heavier