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Thunder Cat 31

Old 07-06-2008, 11:44 PM
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Default Thunder Cat 31

Hello, everyone!

I have a Pro Boat Thunder Cat 31. I have barely finihsed breaking-in. It runs pretty good.

But through the stuffing tube, quite a lot of water comes in the boat, even though I throughly lubricate the shaft with a high qulaity marine grease.

I tooked out the shaft and the teflon liner to examine, and I see that there is a bit of gap between the teflon liner and the flex shaft.

The diameter of the teflon liner is a little too big than that of the shaft, so that there is a bit of gap between the shaft and the liner, and water comes easily in the boat.

Should I replace the teflon liner and the shaft (they are still kind of new. I just have finished breaking-in.)?

Even though I replce them, still is there a gap between the shaft and liner?

Your answer will be greatly appreciated. Thank you very much for your attention.
Old 07-07-2008, 02:12 PM
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Default RE: Thunder Cat 31

i dont think that the water is coming in thru the liner. water cant travel up. the prop is lower than the engine, so i cant see that. i think the water you see coming in the boat is coming thru the two vents on the hatch. spray can somtimes come up in them. a little water in the boat wont hurt it. happens to me after every run. usually, the wavyer, the more water comes in.
Old 07-08-2008, 08:53 PM
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Default RE: Thunder Cat 31

I just bought the same boat.Do the auto bailers work well? Thanks
Old 07-08-2008, 11:48 PM
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Default RE: Thunder Cat 31

I'm not a fan of auto-bailers as after a short time things get clogged up in them and they won't work unless you get the ones that you can take apart to clean.
Old 07-08-2008, 11:58 PM
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Default RE: Thunder Cat 31


ORIGINAL: Ron Olson

I'm not a fan of auto-bailers as after a short time things get clogged up in them and they won't work unless you get the ones that you can take apart to clean.
I agree....and in the event your boat ends up upside down, the autobailers will act as vents....could be disastrous if you don't have flotation in your boat.
Old 07-09-2008, 11:40 PM
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Default RE: Thunder Cat 31

Hello, gentlmen!

Thank you for your answers. I was doing camping for the last several days, and then, I came back home now, checking up this.

I almost covered up the vents on the hatch to prevent water's coming in, leaving a tiny space for air flow.

But still the same amount of the water comes in. I put my boat in my bathtub for 30 minutes, and I see that water comes in through the liner a drop by drop very slowly.

I thought water cannot come in through the liner with the same reason that "Nitornu 911" mentioned. But with the test in the bathtub, I think water comes through the liner.

Even though my boat is a new, should I replace the liner and the shaft or not?

Your help will be greatly appreciated. Thank you.
Old 07-18-2008, 05:57 PM
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Default RE: Thunder Cat 31

Can u take apart the thundercat ones?
Old 07-18-2008, 10:05 PM
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Default RE: Thunder Cat 31

here's what i did on my nitro hammer way back, i'm having problem with water coming up from stuffing tube so i drilled a small hole in the stuffing tube(look the dark spot on the pic),,it works though.

u can try it won'y hurt the boat...
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Old 07-18-2008, 11:50 PM
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Default RE: Thunder Cat 31

I've never had any trouble with autobailers, octura's are very easy to clean, just a ball held in place with a removable cotter pin. Just keep the inside of the boat clean and you shouldnt have anything cloging it up.
Old 07-22-2008, 09:58 PM
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Default RE: Thunder Cat 31

Do u have a thundercat at the time, cause i just orderd one and wanted to know how u liked it when it was stock?
Old 07-22-2008, 10:01 PM
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Default RE: Thunder Cat 31

[link=http://h1071118.hobbyshopnow.com/products/description.asp?prod=PRB2750]Thundercat 31[/link] Pretty sweet boat

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