rusty bucket

Well, I'm trying to finnish up my latest airboat and I have come to another stumbling block. I have the servo hooked up to one rudder horn at the hinge line. Do you connect the two together with two horns using a zee bend, clevis, ball link or just how. Where do you mount the hardware? Rear trailing edge? I can't seem to get the max throw my servo will allow when hooked to both rudders. Hope someone could explain. Right now my little brain can't figure it out. Also do you maintain the same distance apart at the trailing edge as is at the hinge line.Any help would be appreciated.

Thanks
Rustybucket

nickd

There are probably many ways to do it but I used clevis links to connect the two rudders together at the trailing edge, I never really experimented. The rudders will never get the full throw, but the angle you should get (45 degrees ish) will make the boat turn amazingly, (u turns like nothing)

Tammo

Hey Rusty,

Maybe this will help a bit.


The pins need to be placed near the edges of the rudders.
The servohorn needs to be more near the others side. So closer to the hinges of the rudder.

Hope you can do something with it.

rusty bucket

Thanks Tammo,
The ole addage of one picture being worth a thousand words is so true.

Thanks again
Rustybucket

ISIRC10

If you still need clarification, A top view should help...
...nice pic, Tammo...
[8D]

DONS BOAT WORKS

My Feedback: (3)

A picture is worth a 1000 words.
Don M.

TERBObob

My Feedback: (21)

The first pic is something that I would question in doing .
metal to metal creates RF which WILL cause your radio gear to glitch .
Use plastics/nylon where ever possible when trying to use metal

Tammo

First: Who said the pins were metal?
Second: I have done it this way and the pins were metal. No prolems, at all with the RC.

rusty bucket

Well, I appreciate all the help everyone has given me during my second airboat build. It is a nitro powered .46 that is 26x12 with a 10x7 prop to start with. Don't know what it weigh's right now. I have it finnished and all I am waiting on is a battery. Hope everyone will forgive my not being able to post a picture. I'm on a dialup service here in the country and boy is it slow. Unreal and the only option for me is a satillite. A little to expensive for right now. Phone line's we have came over with Columbus and the phone company won't upgrade them. No cable tv either. So right now I'm stuck with 26k. Thursday and Friday was so slow I got flustered and gave up. I read some time ago where someone posted here that they thought no one had dialup these day's. Ha ha sept me. Anyway maybe Ill catch a good day or night and I will be able to post a picture. Thanks for all the help.

Rustybucket.

TERBObob

My Feedback: (21)

WOW ... attitude anyone ?????[sm=72_72.gif]

Well , let me re-iterate .... MOST all pins ARE metal !
Next , unless you pull the pins and keep them well greased , the chances of getting interference is NOT something I would risk ! FTR - yes , I have already experienced this happening . BTDT - been there , done that . ( wanna know from WHO's hardware ? anyone ??? [sm=stupid.gif] synonyms for their name - air / water )

To see if this is risky ,,, simply ask ANYONE who flies , if they would chance metal to metal rubbing or rotating against one another .
Now , "could" it be done ? Sure , anything is possible if you try hard enough , .[sm=teeth_smile.gif][sm=49_49.gif] but when you have very readily available nylon , why chance it ? ( also depends on HOW close your Rx / antenna is , to the object creating RF . )

rusty bucket

Hey TERBObob,
I have this terrible roll over problem with my boat. 26x12 at the water line. Balance at 30% is roughly 7-3/4". She sits low in back on the water. Center of the prop shaft is 6-1/4 off the deck and running a ten inch prop. Gets on plane real fast and could be a fast boat if I could control it with the rudder. No problem with blow over, just when I attempt a turn. Then I have to be nearly at idle to keep from overturning. Dual rudders at 3-1/2 inches apart and sized at 6x3 inches. Using a 46 Evo for power. Side's are angled but I think my problem may be that the bottom is not curved at the chine area. She fly's on grass and I sure would like to get tuned up. The weight is 4-1/2 pounds. Do you think rounding the chine more would help. I hope I'm calling the angle at the water by the right name. On throtle up the stern raise's up and the bow flattens out good with no water slap. Any suggestion's will be appreciated. Just would like other opinion's before I get started on trying to make a fix.

Thanks
Rustybucket

Oh, by the way it has a slight taper stern to bow from 12 inches to 11 inches.

Thanks again

Mr_Byte

I dunno if this would be a fix for the rollover problem, but I've seen boats with the rudders notched at the top:
____
|.....|
|.....|__
|.........|
|.........|
|______|

(Had to put the periods in to get the spacing right. ASCII pics are a lost artform...)

Like this. I asked the LHS owner why it was notched and he said the guy that built it did it to prevent rollovers in turns. YMMV.

Jeff

noahdear

My Feedback: (2)

Sorry, wrong thread. Message deleted.

cheers,
Tony

crispyspa

Turbo wrote:
oxygen / H20 ??? Atmosphere / liquid? Ummmmm....There are so many definitions of "Air and water" and just as many synonyms for each. Tell us the answer.

retaobcr

Don's Boat Works picture is exactly like i did mine and works great. I used braided wire the planes use with 1/8" o.d. plastic tubing for strenght on the long runs of braided wire but i don't cover when it get within 3" for its attachment.

shaunmichaeljohnson

well air is a mix of laods of crap like nitrogen, oxygen, carbon dioxide etc etc.
so crap/H2O hehehehe

jasperrc

Horizon?