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Hi guys, I'm looking to start a new boat in the next few weeks. I'm thinking the mmp titus or the watersnake. The titus 49.5 inches, the watersnake is 54.92 inches. I am trying to decide on a power system, I am not really after very high speeds with this boat around 50mph will be enough. Thinking twin t180 esc + sirius 1600kv 1717 motor on 5s2p and also sometimes 6s2p, so in total 4 batteries in the boat. Will the titus be a LOT easier to push than the watersnake? I like the idea of the big snake but not if I need to step up to a much more serious power system (hv240a esc, 56 series motors, etc). Looking for 45-60mph so let me know what you think. Thanks for your help.
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These are both large hulls, the Watersnake in particular. What exactly are your expectations for the model - speed, run time, etc? You say around 50 mph, then you say 45 to 60 - a big difference in boats this large.
Twins have been done with success in monos, but I doubt that your choice of motors will not work well in the Watersnake - it is just too large, heavy and 'wet'. I really think that a large single will be a far better choice for you in either hull. Right now Castle 2028s are selling for not much more than $200, and they are much more motor than two of the little Sirius spinners. You can run 10S1P if you keep the prop size in check, although run time will be limited - with either the twin or the single setup. It takes the same amount of energy to go a certain speed. It doesn't matter if it's two 5S packs or one 10S pack, the amperage will be the same so the run time will be the same too.
You might consider running 8S2P with the 2028, this is a proven option. The Castle spins a larger, more efficient prop on 8S than it does on 10S and you have more options in prop choice to give lower speeds with more run time. Do what you want of course, but if I wanted a budget build the above is what I'd do.
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Thanks Fluid.
I see he is running the 1717 motor with the x452 prop and 6s2p 4000mah pack. The boat seems to run pretty good. You're right the 2028 motor is cheap now, keithbradley has the beast motor for 190 and they appear similar.
If have my heart set on twins after seeing some of the builds right now on the forum. Something very cool about a mono that launches like a cat running C/R props. If I just HAD to have a twin what would be a nice setup that allows for 50mph? 45-60 is a range, a wide one but allows room for many different theories of how to make it there and I'm interested in new ideas. Thanks again.Comment
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twin 1717's.. They will push either hull with no problem..Comment
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Ya gotta love promotional videos. Yes, the boat runs great - if you believe it has what is claimed to be inside. What you don't see is an uninterrupted run, meaning probably several different runs were filmed. You don't know what the run time was, you don't know if the ESC thermaled, you don't know what the motor, ESC and pack temperatures were, you don't know if the packs puffed or if the ESC blew....bottom line you simply cannot take many on-line videos at face value unless you know and trust the people who shot them.
The 54" hull is huge, and while I would trust twin Castle 1717s to power it I am just not certain about those Sirius knockoffs. IME many knockoffs just don't work for high amp use, meaning thrown windings or magnets, one runs fine another runs hot, they run fine for five runs then crap out, etc. This is especially critical for twins since if one motor spins faster than the other you'll have handling problems; this can be caused by bum ESCs too. I have seen several modelers struggle with this problem, it isn't fun.
I am just trying to help you avoid disappointment in your build, unlike some others who read a lot of posts and will just say "do it, it will work" - without the experience to back it up. Heck, it's not their money, so why not encourage someone they'll never meet? There is nothing worse than to imagine building a great running boat, spending lots of time rigging it - only to be hit in the face when it fails to perform like you want because of a poor choice of components. We see it all the time here - often the project boat is sold soon after the build because it just didn't work out. Better to spend a bit more upfront and not have to buy cheaper parts twice. But if your heart is set on twins and you cannot afford better motors - like I said in my post above, do what you want and good luck.
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Jay, have you ran a Sirius 1717 in a boat? I have. And I've ran the Castles. Have you? What's great, is that these motors are every bit as powerful as a Neu 1527, and for a fraction of the price.Comment
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I like both hulls and thinking for setup 10s 1p-2p with Proteus 524 3Y or a leo 5698/4D 835kv or 56110/2Y 780kv.
Watersnake may run better on rough water but titus is more ''electric'' friendly.Comment
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Ugh this will be a difficult albeit fun decision lol. I have seen a lot of these big monos running 2028 twin motors, twin beast/proteus motors, this should be an absurd setup when complete. I feel like the cats take big power at this scale better but i don't know rarely run mono hulls.
@jrk-Why is the titus more electric friendly?
Thanks rumdog and Fluid I appreciate you cueing me in on some of this stuff it would suck if I stand back proud on the maiden run only to watch a boat squiggle around because of poor power choices. Its hard making the choice of high voltage vs. low voltage high amp setups. I run my 56" boat on 11s1p 5692 motors everything runs extremely cool and its fun but is very fast and given my driving ability shoulda built something slower lol.Comment
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iridebikes247 cause it is smaller mass.
I like them both but titus needs less power to move.Comment
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Gotcha, wasn't sure if there was something else that made it easier. Will be interesting/fun building an FE mono.Comment
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Here is a watersnake on a MHZ mystic 185. The watersnake is extremely light weighing in at less than 6 pounds. The quality of the build is next to none. the video that mike posted of the boat running with a single 1717 is true. I know the guy and was quite impressed with the setup myself. the water snake will take less power to get moving then almost any other mono that is close in size. this one here will be powered with a scorpion 5035 760 kV on 10s
MY DF-41 TOOK MORE POWER TO MOVE
1400543112396.jpg1400542943685.jpg1400542929523.jpg1400542901837.jpgmy youtube videos http://www.youtube.com/user/chris81983?feature=mheeComment
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In the required speed range there is not that much difference in the boats power requirement.
I drove my Watersnake the first runs ~62mph and the current with 10S was not significant higher than with 45"-Monos. Driving alone and cruising around is no problem.
The difference is showing up if you want to drive racestyle (acceleration-Current is higher because of her size) with others or push to higher speeds.
But nothing beats the look of this stylish Diva.WR T-Mono 108.95mphComment
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Yeah totally agree with you on power requirements along with the watersnake being the nicest looking mono I have ever had. Ladislav machan / MMP probably builds one of the nicest boats along with Hanspeter / Hpr. Laduslav also made the mystic 185 in the pictures above.
Sent from my XT1080 using Tapatalkmy youtube videos http://www.youtube.com/user/chris81983?feature=mheeComment
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Jip, i was really impressed by the quality of the hull.
She is also really good in the straights in rough water. COrnering is not that good, but there are many oval-monos on the market so who cares
Upped a video made last year, second run, little bit testing.
Back to the titus vs. snake: Both are beauties, staying in the range of 50s the chose is personal taste
I would choose the smaller one for higher restricted power (basically: cell count) to have more options in the long term for the setup and playing around.
Building a big mono extremly light is on the hand cool, on the other hand it drives not that elegant in rougher conditions.WR T-Mono 108.95mphComment
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Thank you for replies ralf. Chris is my friend that I run boats with and he ended up buying the watersnake before me lol.
I think I will add the titus to the fleet in time but have an interesting cat project in the works!
that mgm400 is really something btw, incredible controller I imagine.Comment
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