Tweet
I tried tried tried, cant get over 68 mph lol, what bats should I be using I'm running what was recommended (5000 mah 3 s x 4) got the boat to settle down and turning sharp, but cant hit 70
-
Zelos 36 stock 68 mph -
This again??... I can without a doubt hands down no questions asked guarantee the Revo packs smoke them. If you buy Maxamps you might as wel buy Vantage packs... Yeah I said it, Vantage packs, you know the ones at your local shop with no name on em. Might work great in a traxxas stampede but a boat pulling 100amps or more x2 will eat them alive. No pack to date EVER has dumped more than 70c on discharge without putting on a light show.I have run more than 10 different lipo manufacturers over the years and still run different lipos, but if I didn't notice that the Maxamp pack out performed the others by a considerable amount then why would I order another one? The 9000mah packs are SMCs and I don't think the dual motors are gonna drain more than those 60C 9A batteries can pump out without hurting them. As far as a 5A-6.5A battery goes, I know that I'll be pushing the crap out of them in the Zelos Twin, so I know for a fact that the 150C rating of the dual core packs will make a difference. After runs in my other boat, the 5A 50C battery is HOT when I pop the cover off and the 6.5A 150C battery is just warm and not even close to hot. I worry about toasting the 50C pack and don't even think twice about doing any sort of damage to my Maxamp 150C pack.
Did you test the dual core 150C batteries? I think most people that have anything bad to say about Maxamps is going off comparisons they did years ago and have never even run one of these new generation packs. I've tested them against my SMCs and my Venom packs and they hold a higher voltage for MUCH longer! I don't want to get into a pissing match about it, but these dual core packs are flat out the *!***!***!***!**. You want the best battery on the market, then get one of their dual core packs. I can't say anything about the older versions, but if you say you've tested one of these and can't tell the difference, then your full of *!***!***!***!**. They are expensive, but if you want the best, then it's gonna cost ya. The dual core packs are the true 150C rated packs. If you are comparing any of their other packs, then I can't argue with ya because I haven't ran them. I've been running RCs for 28+ years and can tell the difference between a good quality and crap pack. I would honestly think someone had something against the company if they tried one of these 150C packs and said they couldn't tell the difference or that they have no idea what they are talking about. Are they worth twice as much as the other packs, well that depends on the person, but they are BY A LONG SHOT the best batteries I have ran in my helis, cars or boats. They don't even get nearly as hot as those 7,200 SMC packs. Just warm and not what I would consider hot. I don't work for or have anything to do with Maxamps, but in my experience they are worth it and blew the other packs out of the water :) Maybe their older 100C and 120C packs weren't what these 150C packs are, but why do I care being that I don't own one of their cheaper packs. If you did test one of their new 150C packs and considered it weak, then you got a bad pack or something, but I am sure you didn't test one of these packs, so how can you comment on it? Not being a dick, but I am sick of people commenting on something they haven't ever run. These 150C 6500 packs are freakin' beast and every person I know that runs them or has tried them feels the same way. Maybe the other cheap companies caught up with the old Maxamp batteries, but these new generation dual core packs are beast! I'd rather just move on with the fun stuff and not argue about something I see as a fact, at least for the time being until the cheap companies catch up again. Maybe for a while Maxamps got greedy and started using the same cells as everyone else? I don't have any idea, but things change and these newer 150C packs are in fact better than the cheap ones. They are better and to me they are worth it. If we were running something that is pulling 80-100 amps, then maybe they are a waste, but the Zelos Twin is asking for it's batteries to pump out probably 160-180amps. If you get a chance, run one of these new generation Maxamps dual core packs and you'll see what I'm talking about. My Blackjack 24 kinda hops out of the water with either of my two SMC 7200s or my Venow 5000, but the boat does a freakin' backflip with the Maxamps. If you want me to make a video to prove this to you, I easily can do so. I have no reason to lie about my experience and could care less if anyone buys a single Maxamps battery and am just explaining the facts about their performance that I have seen.
I'm mistaken, my brother did run the 100C Maxamps packs 2 years ago and there wasn't a big difference between his Maxamps and the cheap ones. I can say that his Maxamps lasted TWICE as long as his cheapo packs and he in fact still runs them. His cheapo packs eventually puffed after one summer of use. If you have to buy 2 packs to equal the service life of the Maxamp battery, then do they really cost that much if any more than the cheap ones?
After burning up 4,900mah out of my Maxamps dual core 150C 6,500mah packs, they feel like the SMC 7,200mah 3S packs after only going through 3,000mah and that isn't even half of their capacity! I can't tell much of a difference if their performance until I get really close to that 4,900mah number. I don't go much past 5,000mah with the SMC packs because they start to slack off on the voltage by then and I think that maybe the ESC already hit where cutoff is slowing it down or that it's at least close to doing so. I like the SMCs because I at least have something to run while the Maxamp is charging which doesn't take long because they are rated to be charged at 5C. The SMC 2C charge rate seems like forever compared to charging a battery at 5C. I like the SMCs and have ordered 2 more, so I'm not knocking on their performance. They just don't hang with what I consider a top of the line battery.
Anyone that tries to make me think that the 150C packs aren't better than ANY other pack out there is just wasting their time. You can say they aren't worth it, but that is relative to your income or if you even care that they perform better. Do they perform 2X better than the cheap ones? No, but in my experience they last twice as long, have the best warranty you'll find for a lipo, have killer customer support and do in fact out perform the others. In this application I feel that they are worth it because a cheaper pack is going to fall on it's face pretty quickly if your beating on this boat. I think running 4 of these 150C packs in the Zelos would be overkill and you won't really see the difference when 4 batteries are pulling the load instead of 2.
The other pumps are listed here:
The blue ones on that list are $27 and flow 24gph, but from what I can tell, they are a magnetic coupled impeller and would rather run a direct drive. They spin the impeller like maybe you have seen in a lab or on TV spinning inside a glass beaker. I'm worried that they won't push the PSI needed. I'm willing to try one for the $27 cost. Maybe I am wrong about the drive, but what else would a magnetic coupler be? The screen on the front of them can be remove to expose the input fitting.
http://www.ebay.com/itm/Submersible-...-/331085260375Comment
-
Darin, maybe you can help me out here, so here is what I am running on stock...SMC 5000 mah 50c constant 3s x 4 Batteries...447's de-tongued props,.... OSE. upgraded flex shafts,... struts are little over 1.5 millimeter down from level,.... small air damn 2" from front center tip,... sanded ride pads to almost white ...reversed the motors to spin outwards, for more stern lift ver's lowering the struts. and besides the obvious sharpen rudder and balance/sharpen props.
anyone help me out here
Zelos 36 stock 68 mphComment
-
What is your voltage under load of those batteries? Outside air temp? Pack Temps? Where is your timing set? What is the RPM of the motors under load?
All useful in helping you "over the phone"...
Honestly, I believe that 90% of the issue is expectations and what other GPS runners have claimed. But, second to that would be that people think their batteries are better than they actually are.
If you have a way to record RPMs under full-throttle and under load, that would speak volumes.Darin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
-
Also I would say water density will probably affect speed not to a great extent but Im sure it will affect it slightlyComment
-
water is over 85 degrees, also Darin what do I need to record that? would like to do that and timming is set to stock ....haven't changed itZelos 36 stock 68 mphComment
-
Darin can you list the meters I need and where to get them please.
Zelos 36 stock 68 mphComment
-
Don't need water temp. I was interested in what the battery temp initially is. Colder batteries suppress more Voltage under load than warmer batteries.
Of everything mentioned, if you could simply provide the RPM under load (using an EagleTree Data Logger or something like that), then it would become pretty evident if the batteries are holding you back.
Still, with those tiny stock motors, 68mph is PRETTY DARNED STOUT!Darin E. Jordan - Renton, WA
"Self-proclaimed skill-less leader in the hobby."Comment
-
thanks Darin, I think 68 rtr is great as well, I looked at Eagle Tree and don't quiet understand it, as in hooking it up. Would like to try the timing 1st since mine is stock, any link to get such gear?Zelos 36 stock 68 mphComment
-
Timing is set at the optimal setting for a delta wound motor. People have raised the timing to get over 70, but they end up smoking the motors, especially with props larger than stock. Its a trade off, if you raise the timing, you need to prop down, even smaller than stock. Most of the voltage at the motor will be converted to heat instead of power, and your batteries will be stressed beyond their limit.
The motors only make 500 watts each. Close to 70 swinging props much larger than what the motors were even intended to swing, and still not having burned one up, is very impressive, IMO. If you want more RPM, swap out to 4 pole Y wound motors. Then you would get more RPM and be able to run 17* of timing.
Your limitation right now is the motors, IMO.Rafael Lopez
Product Developer-Pro Boat
My Facebook https://www.facebook.com/profile.php?id=100010183246751Comment
Comment