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Thread: Anyone know if a Turnigy 35A ESC is enough?

  1. #1
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    Default Anyone know if a Turnigy 35A ESC is enough?

    I bought one of these boats, Widowmaker, on eBay pretty much new, but the ESC had burned and been removed for $90. The stock ESC says it's 30 amp and I don't want to spend to much on it so I was wondering if any one had any idea if this would be ok for this boat on 2S.
    http://www.hobbycity.com/hobbycity/s...idProduct=7377

    Thanks
    Rafael

  2. #2
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    Default

    So you were the one who outbid me on that boat..lol
    Should work fine. I run the pro boat 2900kv and the seaking 35amp esc in my Aquacraft Rio and it works great. 36mm prop on 2 and 3s. That proboat esc will burn, does not have burst abilities like the seaking. Go get it!!

  3. #3
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    Hahaha! Are you referring to the one from hobbmart?

    Thanks for the input. I figured it would be enough and thought problem was with the stock ESC. Just thought I would ask before I bought it and found out the hard way that it couldn't keep
    up.

  4. #4
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    Yeah, the one from hobbemart! I have been trying to get one for over a month but do not want to spend more than 75 bucks for the hull. I am sure I will get one eventually..lol I want to put my the seaking in it with my grim 36x55. Then I will convert my Rio to the rescue rig.

  5. #5
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    What size sea king are you planning on putting in one?

    Honestly I bid on it thinking I would get outbid, like I always do when biding on Hobymart stuff. I didn't even check the auction till Tuesday and it ended on Sunday :P. Then I read the reviews on this forum and others and was completely bummed out about winning it. Saw videos of it and it skips along the water like crazy! But I figured for now WTH, I'll just keep it and mess with it a bit and try to tame it to where its drivable.

    To start, I might even throw my spare Mamba Max in it without water cooling and see how hot the ESC gets. Considering it has 3 caps and its 100A continues rated it might do ok on 2S in this boat. By what I hear the motor in the Widowmaker is pretty efficient anyways. Worst case it will just thermal and shut down. If it works but is a tad to warm, I'll rig up a way to water cool it and save $50 on a lesser ESC.

  6. #6
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    I have the 35amp that I plan on using in it. Got it for $34 from value hobby, great buy for the money. Also have a 60amp seaking but that's probably going in my supervee R soon so I can upgrade the motor.

    I hear you can tame them down quite a bit with some strut adjustment. It does look like a fun boat for wave jumping if you ask me!! Good luck with it and let me know how you like it.

  7. #7
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    Hmm, wave jumping does sound fun!

    Thanks, and I sure will let you know.

  8. #8
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    Default Seaking ESC

    Hi Jackblack26

    I have a Shockwave 26 I converted to brushless using the Widowmaker motor this summer. As I needed to buy a brushless ESC I bought the Seaking 35A ESC, thinking it would be better than the ProBoat stock 30A ESC which a lot of people have had problems with burning up.

    The 35A ESC ran fine with 6-cell NiCd and 8 cell NiMh packs and 2S lipo, using the Proboat plastic prop and an Octura replacement Y534 I got after the original prop broke. However when I got an Eagle Tree logger I found that the motor was actually drawing much more than 35A - up to 50A or so. The ESC has a "burst" rating much higher than 35A which was actually OK for my pond - I can't run for more than 10s at full speed anyway - but I decided to upgrade to the Seaking 60A ESC instead for peace of mind when I upgraded to a Y535 metal prop. However I do hear that the 35A ESC is conservatively rated and puts up with some abuse, so a good buy for <$30.

    -yellowbird

  9. #9
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    Thanks for the input, Yellowbird. For now I have decided to stay with the Mamba Max speed control in there. I ran 3 5000mah 2S packs back, to back, to back today with no water cooling to the ESC and I could hold my hand to the heatsink with out it burning my thumb, so it had to be under 100*. I forgot my temp gun. The boat is so small and light that I don't believe I will need a cooled ESC unless I upgrade to a bigger prop. The boat is already a handful as it is, so I think it will stay as it is and just get a metal version of the stock prop. I did break the stock prop and I threw in the one from my Apache. Don't know if it was a different one but I did notice a bit of change in speed. It seemed faster for some reason and it was kicking up more water. I'll post a video of it running in my other thread.

  10. #10
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    Default Mamba cooling

    Hi JackBlack26

    Just a thought, you could try adding a water cooling plate to your Mamba ESC for a bit more protection? OSE has these for ~$6

    http://www.offshoreelectrics.com/pro...prod=ose-80678
    http://www.offshoreelectrics.com/pro...prod=ose-80674

    which you may be able to shrinkwrap or tie wrap on top of the existing heatsink for extra cooling.

    - yellowbird

  11. #11
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    Haha, I was going to be ghetto and just JB weld some tubing along the sides of each end, length wise, on the green heat sink

    But seriously, I was going to take the ESC apart and see if I can get the stock heat sink off. If I can I'll put one of those over the FETs, attach it with heat transfer epoxy from Radio Shack, and shrink wrap it. Thanks

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