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Proboat Impule 31 goes to the bottom.

Proboat Impule 31 goes to the bottom.

Old 06-20-2014, 07:48 PM
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Default Proboat Impule 31 goes to the bottom. (UPDATE!)

Today, after cycling and charging the stale NiMH batteries for my friends Impulse 31 V2, I took it for a test run (with permission). He just bought it from a private seller, open box, but never ran. It was going pretty slow by my expectations, probably 25-30 mph. It suddenly hopped some chop, rolled over, and sank. The only thing I was able to recover, was the upper cowl, which was floating, with the latch in the locked position.

I am 100% sure it was latched, and I double checked the inner watertight cover by pressing down on it, feeling for pressure/vaccum before I latched the top cover.

Regardless, it's supposed to have foam in the bow, to prevent full sinking isn't it?

Did the factory leave out the foam? I am pissed. Now I owe my friend a $400 boat.

BTW It's in 25-30 feet of muddy, weedy, murky water.

Last edited by cygnusx1; 09-23-2014 at 01:54 PM.
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Old 06-21-2014, 05:52 AM
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Your friend should have checked it over before going from the box right to the water for sure when its used. I always had more foam then what they come, there could have not been enough, or even there.
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Old 06-21-2014, 12:51 PM
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Yeah it was packed like a new boat when he got it, I don't think it was ever run. I think the factory must have left out the foam.
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Old 06-21-2014, 12:56 PM
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It is your friend that is out 400 bucks, not you.
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Old 06-21-2014, 02:23 PM
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Me and my sons have set rules, we stick too like concrete. We rarely, very rarely, drive each others rc's, he nor I NEVER EVER drive someone elses rc, ever. Even when some guy asks, "Do you want to drive my 70mph Rustler?" Hmmmm thanks, but no thanks. Sorry to hear it went down, sucks big.
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Old 06-21-2014, 04:35 PM
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Cool sunken treasur

I would get a strong magnet and try to find it. good hunting
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Old 06-21-2014, 08:39 PM
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Spent two hours with magnets, and hooks with three guys off a boat today. No luck. We are splitting the cost for a new boat.
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Old 06-22-2014, 05:44 PM
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If a RTR boat comes with any floatation at all it never seems to be enough. Never assume anything. A $2.00 pool noodle cut up and fitted in a boat will save them. One length of one is usually enough to keep one of my big gas boats from visiting Davy Jones' Locker. Make sure that it's secure also as if it pops out the boat will still sink.
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Old 07-23-2014, 06:18 PM
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This happened to me when I was a kid . Me and my dad just bought a 55 or 60 inch gas powered Scarab by Dumas. We took out in the ocean (shallow thank god.) took it for a few laps and the boat flipped over and sunk my dad thought it was such a big boat it wouldn't flip. We spent two days driving around his boat looking for it. We found it and I swam a good 20-25 feet under to get it lol. The motor (Zenoah) was fine actually
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Old 07-24-2014, 09:55 AM
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Crazy that it would flip like that especially with NiMH. I'd be out there with a long fishing net and pole.
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Old 08-16-2014, 07:03 PM
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Old 08-19-2014, 12:03 AM
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Anyone know a part number for the little rubber grommet at the base of the antenna. The one on my boat crumbled when I pushed the antenna tube into the hole as the rubber was dried out. Can't find any info in the manual. Even better would be an upgraded seal for the antenna hole.
Would there be any negative affect to turning the batteries on their sides in the tray, the battery cables come out the top of the batteries and push the Tupperware lid off if laid down flat.
Last boat was a Viper, so its been a while.
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Old 09-14-2014, 03:26 PM
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I don't get it.. I read on a daily about guys shinking there boats. The real question is why are you guys not using a hatch tape of some kind? Don't get me wrong I stuff more foam than factory. But I never. Had a boat shink or even start to skink. Iv had boats upside down for 10 plus minutes, get them back and they are bone dry inside. . . I just don't understand.
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Old 09-18-2014, 09:48 AM
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I test all my builds in shallow water before adding electrics. I would hate to loose a boat to the lake.
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Old 09-22-2014, 06:50 PM
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Proboat impulse with stock foam will NOT float with heavy dual NiCd batteries when its full of water. We proved this.

Last edited by cygnusx1; 01-09-2015 at 02:54 PM.
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