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Speed controller question

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Speed controller question

Postby Boss subfixer » Tue Jul 28, 2009 9:51 pm

I decided a while back that I was not too happy with the performance of the USS Crockett I have so I want to totally repower it. It has a single 6 volt Dumas motor that fed into a gear set to drive the two shafts and is controlled by a Dumas mechanical speed controller. As I said performance was dismal. I have acquired two 12 volt Dumas motors that are mounted to a belt drive set up giving them a 3 to 1 ratio and I want to (if I can) use an electronic speed controller. Now for the tricky part. I have a few ESCs on hand and these are the only ones I am considering. The wife is laid off so hobby cash is as scarce as hens teeth at the moment. The big questions I have about them is will they take 12 volts and do you think they will handle the amperage from the two motors. I'm not sure what the total amperage is just yet and was hoping to call on the years of experience here. Here is what I have for information along with the esc description. I did try looking up the Novaks and the Traxxas on the company web sites but I don't think they are made any longer. Any help would be appreciated and thanks.

Novak Rooster, 100 amp, voltage input 6 or 7 cells. I'm pretty sure the amperage is good just not sure of the voltage.
Novak Hammer pro, 80 amp. Again voltage and does anyone know if it's reversible.
Futaba MC210 CB, this one has a 30 amp fuse so it's a voltage and amperage question
Dynamite power pulse. I have no info on this one.
Traxxas XL 1. again no information.
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Postby Rogue Sub » Tue Jul 28, 2009 10:07 pm

Don Ive got one that can take it. email me. We can trade for something or I will just give it to you.
Last edited by Rogue Sub on Wed Jul 29, 2009 5:54 am, edited 2 times in total.
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Postby Art Broder » Tue Jul 28, 2009 10:17 pm

Traxxas XL-1 is rated for 6 or 7 cell battery packs. (7.2 or 8.4V) I would think it would burn out on 12V.
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Postby tsenecal » Tue Jul 28, 2009 10:26 pm

Don,

I am certain that the futaba is rated for 7.2 volts as well
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Postby Skip Asay » Tue Jul 28, 2009 11:06 pm

Don, it looks like you're SOL. After a Google search, it seems the only ESC that's rated for 12 volts is the Novak Hammer Pro but this one doesn't have reverse.

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Postby subdude » Tue Jul 28, 2009 11:26 pm

Skip,

I must respectfully disagree. Might I suggest you check out the MTroniks line. I've been using their Viper Marine in everything for the past 3 or 4 years.

6 to 12 volts, up to 40 amps, waterproof, full reverse, etc.

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Postby Skip Asay » Tue Jul 28, 2009 11:31 pm

Jim - Read his post again. He is stuck with the choices listed.

"I have a few ESCs on hand and these are the only ones I am considering."

And those were the only ones I was referring to. So there. 8)

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Postby Carcharadon » Wed Jul 29, 2009 5:40 am

I had to make my own ESC. I couldn't find anything that could handle the power. Some of these ESCs are advertised or rated for hi amps but I would burn em up. It runs on 12 and 24v (DVVT). It is rated at a real 40 amps 100 v.

When the sub dives it’s running on 24 v drawing 18 + amps.

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Postby subdude » Wed Jul 29, 2009 7:38 am

Doggone it Skip, how come you've always gotta be right :roll:

:D :D :D :D

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Postby Bigdave » Wed Jul 29, 2009 8:28 am

Hey Jim my friend, :D
If I have learned two things in my life they are.
1-Water will always find its way in. :roll:
2-Never answer a post Skip is involved in. :lol: :lol:

O, and three-Never spit into the wind!!

All three are a loosing proposition!! :? :lol: :lol: BD.

BTW-See you soon guys!!
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Postby Boss subfixer » Wed Jul 29, 2009 9:34 am

Thanks for the fast replies guys I knew I could count on you. I suspected as much from my choices but thought I would ask anyway. I have other boats those will work in.
Jim I have an MTronics viper 10 in my Sturgeon and your right they work great.
Carcharodon what can I say but YIKES. That's way over my head! I'm just a simple John Deere hat wearing mechanic if you know what I mean.
BD there is one more thing you should never do into the wind. :wink:
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Postby Al Nuci » Wed Jul 29, 2009 10:17 am

Hey Jim, Don't feel so bad, and they say these test aren't made to be tricky :D
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