Remote trimable outboard?

[NorCalZ71]

Has anyone ever made a mount th be able to adjust outboard trim via 3rd channel? I have a modded fs gt3b radio so I have 8 channels. I was thinking about building not only remote trim but possibly also motor height. If weight was not an issue would this be a good idea? I couldn't find any info on anything like this.

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[Insaniac]

I have seen this for 3.5cc nitro hulls, but I believe it was eventually outlawed for racing so nothing ever became of it...

[NorCalZ71]

I could see it being outlawed for racing. Kinda cheater settup lolz. I only sport run and for the scale look I think it would be kool.

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[marko500]

I've kcked around this idea for awhile now. Just never got around to trying to work out the details. I did have power trim tabs on a big gas offshore v-hull. Was cool to see it run and drop or raise the bow. Be interested to see what you can come up with.

Mark

[Boaterguy]

can you ssend me a tutorial on how to mod these controllers? or is it self explanitory?

[NorCalZ71]

Theres a thread on it on rctech and rccrawler.com

http://www.rctech.net/forum/radio-electronics/394162-flysky-gt3b-transmitter.html

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[Griff]

I used to race a nitro tunnel hull way back, had the outboard trim set on my transmitter, it was a rotary dial on the top right, it really did help to get the best out of the boat,
being a dial it was easy to raise or lower the trim in small amounts, the trick was to know when to leave it alone, I was always tempted to try and get that tiny bit more, then over she went lol. I have also been thinking of modding my Stiletto to allow adjustments on the fly, but haven't thought of a solution thats both works and looks neat and tidy.

Tom

[NorCalZ71]

I'm not sure how you would do it on a stiletto. I'm waiting for my hk hornet to come in. I know the hornet has a huge servo tray with 3 servo slots so I'm working on some sort of cable system in my head but it's all speculation till I get the hull in my hands... Should be here by the end of the week. I'm gonna experiment on the stock OB but I think it will eventually get a stiletto OB

[Diegoboy]

I tossed around the idea of using a heading hold gyro to keep the trim level no matter the hull attitude.

[marko500]

What about a rod coming off a high torque servo out the transom through a rubber boot seal pushing out on the outboard? As you said it's hard to figure out without the boat in your hands.


Mark

[desmobob]

I'm not sure how you would do it on a stiletto. I'm waiting for my hk hornet to come in. I know the hornet has a huge servo tray with 3 servo slots so I'm working on some sort of cable system in my head but it's all speculation till I get the hull in my hands...

In my mind, it would have to be something very strong that could resist a lot of pressure in two directions. I'm thinking screw-drive....

I tossed around the idea of using a heading hold gyro to keep the trim level no matter the hull attitude.

Most people are in the box. Diegoboy is outside it, thinking. :)


Take it easy,
desmobob

[Boaterguy]

In my mind, it would have to be something very strong that could resist a lot of pressure in two directions. I'm thinking screw-drive....



Most people are in the box. Diegoboy is outside it, thinking. :)



Take it easy,
desmobob

couldn't use a screw drive for the gyro.
I was thinking a plate that the original leg mounts to, hinged onto a second plate, like this

[desmobob]

couldn't use a screw drive for the gyro.
I was thinking a plate that the original leg mounts to, hinged onto a second plate, like this

Looks interesting, but forces from the motor would bear against the servo's drive train. I was thinking a screw drive because it wouldn't transfer any force to the servo and would be slop-free. Don't know about the gyro... I had a lot of fun one season messing around with a pair of simple piezo gyros in a couple of my RC airplanes. I'm really impressed with the better ones in my helis, especially the 3-axis type in the flybarless set-up on one bird.

I guess it's time for somebody to start experimenting with them in boats! I have a 3-axis unit with heading hold (Flymentor system) sitting in the box in the workshop... hmmm... you could rig some trim tab actuators to the roll axis, the adjustable motor trim to the pitch axis and the rudder to the yaw axis....

Take it easy,
desmobob

[Boaterguy]

hook one up to the stinger on a mono, so if the boat starts to lift, it takes more prop out of the water and as it settles it pushes the hull out.
someone should experiment with adjustable pitch props.

[srislash]

I've been wanting to do this to a cat or tunnel for years just didn't want to mess up a good cat and never got around to a tunnel.Thats how the F1 guys do it though is trimmed way up down the straight and slam it for the corner.