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problems with ts2 tunel hull, please help...

Old 03-20-2006, 08:00 PM
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RcCarFreak
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Default problems with ts2 tunel hull, please help...

hey, my ts2 tunnel hull bounces alot in the water, mostly in turns, but in straight aways also unless i hit high speeds, anyone know why, and has a solution???
Old 03-20-2006, 09:55 PM
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Ron Olson
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Default RE: problems with ts2 tunel hull, please help...

A lot of Jerry Dunlap's designs do this, a byproduct of the hull needing to ride on a cushion of air at speed. Part of the cause can come from having the engine height a little off also as you should get a little porpoising at low speeds but it should go away once over half throttle. If the boat was set up according to the included setup board, it should be close to where it needs to be.
Bouncing in the corners could mean that the engine is just a little high so try lowering it down a little bit at a time.
Old 03-20-2006, 10:11 PM
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Default RE: problems with ts2 tunel hull, please help...

im going to try that tomorrow, thanks ron.




tony
Old 03-20-2006, 10:14 PM
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Default RE: problems with ts2 tunel hull, please help...

and i couldnt use the setup board becuase my outboard is different, im not using a the o.s xm o/b, im using the thunder tiger outboard, the mount holes are way off. the setup boards are for k&b, and o.s outboards.




tony
Old 03-20-2006, 10:19 PM
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Default RE: problems with ts2 tunel hull, please help...

OK, the basics are about the same for any make of engine. Start with the centerline of the propshaft about 1/8" above the bottom of the sponsons and go from there. I'm sure that once Mark gets to work and gets bored there, he will give you some extra pointers.
Old 03-20-2006, 10:21 PM
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Default RE: problems with ts2 tunel hull, please help...

ok, thanks.
Old 03-20-2006, 10:46 PM
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Default RE: problems with ts2 tunel hull, please help...

ORIGINAL: Ron Olson
I'm sure that once Mark gets to work and gets bored there, he will give you some extra pointers.
At work and bored I am.... The setup board (white starting stand) will work with any motor / lower combo. It's not just for OS or K&B. It's all the same. Tony, what you are refering to is the transom mounting holes needed for either the K&B or O.S. motors. Last talk I had with JD is that he is working on a slanted mount to be used for the TT motors on the TS2. As for bouncing at slower speeds, that is common on most if not all tunnels. As Ron stated, tunnels need to ride on a cushion of air. My 29" WOF Mac/Lawless bounces until about 2/3 throttle. From what I've read, most motors will require a bit of negative thrust line on the TS2. This may be due to how the chin on the cowl was molded. It has a slight upward slant to it, causing unwanted lift. I've yet to get my TS2 K&B SS in water. Trying to figure out how to install a remote 3rd channel needle.
Old 03-21-2006, 10:26 AM
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Default RE: problems with ts2 tunel hull, please help...

mark, at full throttle in a straight line it does not bounce at all, but if i turn at full throttle ( doesnt even have to be that sharp of a turn) it bounce alot, to a point where the only thing that stays in the water is the prop.
Old 03-21-2006, 12:48 PM
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Default RE: problems with ts2 tunel hull, please help...

What is happening is that one sponson is lifting just enough to free up the prop in the corners causing it to hop. Without all kinds of stuff like power trim like their big brothers, the settings on an R/C version are compromises.
Old 03-21-2006, 12:57 PM
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Default RE: problems with ts2 tunel hull, please help...

so what do i do? just let it keep hopping?
Old 03-21-2006, 01:15 PM
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Default RE: problems with ts2 tunel hull, please help...

Keep tweaking it to get the best performance. Once you find the happy medium, mark it somehow so you won't have any trouble finding where things were in case you try other adjustments or pull the engine off for any reason.
Old 03-21-2006, 01:17 PM
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Default RE: problems with ts2 tunel hull, please help...

ok, thanks, good thing is that there's a lake right infront of my house, about 150 ft away from my house, saves me alot of time, im going to start tweaking it today...


tony
Old 03-21-2006, 01:22 PM
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Default RE: problems with ts2 tunel hull, please help...

Just keep in mind to make the adjustments in SMALL amounts. It's surprising how tiny changes can make BIG differences.
Old 03-21-2006, 06:21 PM
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Default RE: problems with ts2 tunel hull, please help...

Tony, what prop are you using? You might want to lower the motor ever so slightly to stop the cornering bounce.

150' away for a pond. Lucky you [:'(] I have to drive 2 hours for a legal pond [:@]
Old 03-21-2006, 06:24 PM
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Default RE: problems with ts2 tunel hull, please help...

ob nut, im using the Octura X440 and X640 prop. i got it to stop bouncing, but now the engine lags, im new to rc tunnels, and im about to give it up... i should of just bought a rtr....
Old 03-21-2006, 07:04 PM
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Default RE: problems with ts2 tunel hull, please help...

Welcome to the world of nitro boating. Going to a larger prop means that you may have to richen the carb a tad plus sometimes an adjustment in engine height on outboards. Weather conditions can play a part in not just day-to-day running but sometimes runs just hours apart.
Old 03-21-2006, 08:50 PM
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Default RE: problems with ts2 tunel hull, please help...

Both props are good props for the boat/motor. Might want to try a x437/3, x438, x1440. All can be altered in many fashions. A cutback x1440 is great. Heard talk of the m440 is also a hot prop. As Ron pointed out, weather changes can give us boaters headaches. What worked one hour ago might not work now. An RTR will give you the same if not more problems. If there is a chance you might race, the TS2 is a better option than RTR also.
Old 03-22-2006, 03:16 PM
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Default RE: problems with ts2 tunel hull, please help...

ok, thanks.... im going to start to buy props and see which one works better for my setup.

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