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Sharp curve - 6/9/2009 12:00 PM   
carlosam


 

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Someone has found it has problem with hovercraft rudder in the water to do much better the curve to the right and have difficulty to make the left.

If I to reduce the width of the rudder and to increase the length will be going to improve?
 


 


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RE: Sharp curve - 6/10/2009 10:47 AM   
Rowboat



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Status: offline 		I don't know exactly what your problem is . But I would say just try a diferent rudder size and see what happens.
 Have you anny pics to show us.?

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RE: Sharp curve - 6/10/2009 12:59 PM   
carlosam


 

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quote:

ORIGINAL: Rowboat

I don't know exactly what your problem is . But I would say just try a diferent rudder size and see what happens.
 Have you anny pics to show us.?



My boat goes straight.
The problem is that it is much better to bend to the right and a great difficulty for the curves to the left.
The black version is current and the white is that I want to install.



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RE: Sharp curve - 6/10/2009 1:54 PM   
Mr Cajun Gator


 

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Status: offline 		If what you have now is not working then what will it hurt to try something else. Looks like the second rudder will work better


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RE: Sharp curve - 9/30/2009 6:46 PM   
mrfixitwhite


 

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Status: offline 		if you really mean 'Hovercraft' then you'd do much better with air rudders behind your thrust fan-unless your meaning an airboat then water rudders are fine
if you have a water rudder -kind of defeats the purpose of hovering on air so you can drive on land or water.
do you have any pics of your craft?

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RE: Sharp curve - 10/1/2009 6:48 AM   
nick_75au



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Status: offline 		Is the steering servo attached with 1 rod to the rudder, when the servo pulls its usually a positive "connection". The rod can flex when pushed by the servo giving less throw to the rudder and causing the problem you describe. If you run 2 rods it makes a "pull pull" system and will be more direct action on the rudder.

The 1st rudder will exaggerate the problem as it is less "balanced" IE % of blade behind the pivot point is higher, requires greater force from the servo. Ideal is 25% forward and 75 % aft of the pivot.

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RE: Sharp curve - 10/19/2009 3:26 AM   
rickburnout666



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Status: offline 		I always found air rudders work best on an airboat, directly behind the prop or one either side, plus they dont go snagging submerged obsticles,weeds. etc. the only time you might need water rudders is when you have strong cross winds, that catch the air rudders, and can cause blow overs, been there, done that, got the T-shirt. What engine/motor will you be using ? Nitro,Gas,Electric Brushed or brushless? and what size is the craft?
(hello Mr Cajun Gator & mrfixitwhite i have returned)

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