What does adjusting the angle of the rudder do?

[AusJam]

Can someone shed some light on the what the different angles do on the rudder of a nitro Aquajet, I don't mean the left/right turning either, it's the tilting forward and back via the 2 screws.

[namba98]

tilting the bottom of the rudder forward will cause the nose go down when given a right or left command and the opposite when the rudder is tilted back

dave b

[AusJam]

So which way do you recommend, is there a position to suit the conditions on the water?

[namba98]

So which way do you recommend, is there a position to suit the conditions on the water?

It all depends on your boat and the water conditions...it is always best to start out with the rudder in the nuetral position

Dave

[97TRAKIN]

tilting the bottom of the rudder forward will cause the nose go down when given a right or left command and the opposite when the rudder is tilted back

dave b

I thought it was the opposite of what you're saying above.

Rudder tilted back for nose down, forward for nose up.

[namba98]

bottom of the rudder forward causes the nose to go down

bottom of the rudder aft nose goes up

maybe that will help

[97TRAKIN]

bottom of the rudder forward causes the nose to go down

bottom of the rudder aft nose goes up

maybe that will help

I got what you're saying. I just thought it was the opposite :rolleyes: .

[97TRAKIN]

Follow this tread on JRCBD. http://p086.ezboard.com/fjimsrcboatdockjimsrcboatdock.showMessage?topicID= 21535.topic

[Burkey1000]

It has the most effect in the turns, I also curve the bottom of my rudder so the bottom leading edge tapers up slightly to the back of blade and i sharpen the bottom of it too. Hope that made sense to ya its early :D

[97TRAKIN]

It has the most effect in the turns, I also curve the bottom of my rudder so the bottom leading edge tapers up slightly to the back of blade and i sharpen the bottom of it too. Hope that made sense to ya its early :D

I got ya. I too sharpen the bottom of my rudder blades to take lift out of them. Tapering the leading edge up to wards the back of the blade makes sence in thereory. I may have to give it a try, should take a LOT more lift out.

[TRIKDYA]

I got ya. I too sharpen the bottom of my rudder blades to take lift out of them. Tapering the leading edge up to wards the back of the blade makes sence in thereory. I may have to give it a try, should take a LOT more lift out.

happen to have pics of one of your rudders?

[97TRAKIN]

happen to have pics of one of your rudders?
Yes I do. Here are some of the rudder and the boat under way. I'll get a close up later.
http://i38.photobucket.com/albums/e108/97TRAKIN/RCboating/short002.jpg
http://i38.photobucket.com/albums/e108/97TRAKIN/RCboating/boat012.jpg
http://i38.photobucket.com/albums/e108/97TRAKIN/RCboating/f44019.jpg
http://i38.photobucket.com/albums/e108/97TRAKIN/RCboating/flow003.jpg

[Burkey1000]

i also like to keep the rudder behind the prop, this helps more stable running, better turns both left and right and also keeps the rudder out of the prop wash. Try and keep the leading edge of the rudder blade just behing the back of prop. ;)

[97TRAKIN]

i also like to keep the rudder behind the prop, this helps more stable running, better turns both left and right and also keeps the rudder out of the prop wash. Try and keep the leading edge of the rudder blade just behing the back of prop. ;)

How far do you offset? I like to hang it in line with the starboard engine rail which is about 2.5" from center on a standerd 5" spaced engine rail set up.

[Burkey1000]

2.5 is correct 2.75 at most but the first is the most common use. also keep bottm of rudder around 1 inch to 1-1/4 inches below the bottom of the prop and no deeper. this should give an alround good setup. :)