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Dual Titan 775 E-Maxx Project
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BTallack
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Talking Dual Titan 775 E-Maxx Project - 02.17.2011, 09:47 PM

I know that brushed motors aren't very common around these forums, nor are they very common around my stable of RC cars. I did however elect to stick to brushed motors for this project in order to make a waterproof powerhouse.

I used a pair of EVX-2 ESCs to power two Titan 775s. The result is a Torque monster with a higher top speed too.

You can see the full project details here: http://goo.gl/niY03

Pictures







-Brennan
   
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What's_nitro?
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02.17.2011, 10:40 PM

Looks like you're having fun with it...

I would recommend the use of WD-40 in the motors after each run to keep water from sitting on the bare iron components. Of course check all of the other metal chassis parts for rust once in a while, too.
   
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Klausen
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02.19.2011, 12:48 AM

Looks nice.

Isn't it possible to use only one of the esc's?
   
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BTallack
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02.19.2011, 04:37 PM

Each Motor uses four power wires (2 positive, 2 negative) as they require a fair bit more power than a single 550. I could have just used one ESC by combining the wires but I likely would have fried the ESC in a real hurry. I'd also likely lose power at full speed on a single ESC.

Basically Traxxas designed the 775 to replace two 550s.

Last edited by BTallack; 02.19.2011 at 04:38 PM.
   
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Klausen
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02.20.2011, 08:43 AM

I see, then I learned something today.
   
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BTallack
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02.20.2011, 01:55 PM

Basically, I likely could have done it, I just didn't want to risk it when I already had a spare EVX-2. No sense frying an expensive ESC if I don't have to.
   
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Shonen
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02.22.2011, 05:41 AM

I was going to ask why you used two EVX-2's until I read that you had them laying around. (Based on the ratings of the EVX-2 and Mamba Monster, you could drive both 775's with just one Monster.)

Looking good!
   
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BTallack
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02.22.2011, 02:51 PM

Quote:
Originally Posted by Shonen View Post
I was going to ask why you used two EVX-2's until I read that you had them laying around. (Based on the ratings of the EVX-2 and Mamba Monster, you could drive both 775's with just one Monster.)

Looking good!
I tend not to trust ratings on brushed speed controls. I've nearly burnt out a couple XL-5s running on 8 NiMH cells even though the specs say they can handle it.
   
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