Waterproof Servos

[Ron Olson]

I've never has a problem with waterproofing spray like Corrosion X or Aero-Plate when they made it. My old Speedmaster 21 had the radio box full of water, drained it out then retaped it then ran the boat again a few minutes later.

 

[Tim leyde]

I have run nothing but micro s for throttle. Not a big deal. However I will be going to 225 for throttle this year.

 

[Tim leyde]

Kev, there is plenty of room to make a new shelf for the servos of your choice in that new vision.

 

[Kevin Krogness]

Will see, I did find a extra 85mg I have no use for!!!

 

[Tim leyde]

Kev, text Mr your address. I'll mail ya a servo tray I have some templated out already to suit a 645, 225 and a 85

 

[Ron Olson]

I've run 81's and 82's on my nitro boats but I had some of the 81's before they pumped out the bad ones. I'm starting to use the 225's in my gas burners for throttle duties. When I go ot the Toledo Show there are plenty of dealers in the swap meet area selling them cheap so I stock up on those and 645's.

 

[Tim leyde]

85MG have worked great for throttling my 20 size boats, hydro and tunnels.

 

[David Bryant]

mircos for third channel only, just never had much luck on ob throttles with 'em. No problem getting 1 full size steering, a 225 throttle & a micro third channel servos

so you're saying a micro isn't strong, or robust enough, for throttle control? Or is it that outboard engines require more torque for throttle control?

I'm using Airtronics 94813 (metal gear, 54oz torque/.16s @6V) micro servo's for throttle control on two different outriggers (.45 and .67 size):

http://www.airtronics.net/index.php/airtronics-94813-micro-18g-digital-metal-gear-servo.html

 

[Kevin Krogness]

I believe just micros on outboards is what Robin is talking about. If for some reason a lot of force was put on the outboard and the steering servo doesn't absorb or linkage on the steering breaks,,, the micro on the throttle will probably get trashed..

Robin is usin a inbetween servo the 225 for steering in his 21 rigger I believe so I would imagine he is using micros for throttle on the riggers.

I plan on trying a extra 85mg I have for throttle on my outboard or Maybe the one you just pointed out!!!

Other than that it's all micros on throttle for this guy!!!

 

[Kevin Krogness]

I think Rod was using the servo from hobbyking that's under 10$ for steering on his 12 rigger, and believe it was a micro. Can't remember what one though. Thought about trying them out also...

 

[dave roach]

I use the 85mg for thottle and third channel and the 645 for steering on my 3.5 tunnels with no problems.

Dave

 

[moparbarn]

mircos for third channel only, just never had much luck on ob throttles with 'em. No problem getting 1 full size steering, a 225 throttle & a micro third channel servos

so you're saying a micro isn't strong, or robust enough, for throttle control? Or is it that outboard engines require more torque for throttle control?

I'm using Airtronics 94813 (metal gear, 54oz torque/.16s @6V) micro servo's for throttle control on two different outriggers (.45 and .67 size):

http://www.airtronics.net/index.php/airtronics-94813-micro-18g-digital-metal-gear-servo.html

no david, they have the guts to operate the throttle just fine. i just haven't had ANY micro last for more than a season or 2 on ob throttle duty. not sure why, lite cable, heavy cable on a variety of k&b's & cmb's on ALL sorts of tunnels. they work great & last forever in my .21 riggers & monos. 225's are a little more than what is ABSOLUTELY needed. but since i use them for steering in the ib's, all the more reason to be consistent with equipment & needed spares. race, the added reliability is a plus, also. sux to drive 10 hrs. to chuckytown & have issues , been there, done that. 225's for my ob throttle

 

[Ron Olson]

That's what I'm wondering. Is the additional drag from the throttle cable as opposed to 2-56 or 4-40 rod making it so that you need a stronger servo?

With today's micro and nano-servo's putting out as much or more than the standard servo's of yore, is it the small size and tiny gears stripping out easier? We're looking at some awfully small teeth on the gears no matter what their torque ratings are.

Are you willing to give up a little weight to install a smaller, weaker servo? If weight seems to be an issue over reliability then there are other places to put the boat on a diet. That couple of gram loss might be what you wished that you had while your boat is going WOT towards the shore with no control!

 

[moparbarn]

That's what I'm wondering. Is the additional drag from the throttle cable as opposed to 2-56 or 4-40 rod making it so that you need a stronger servo?

With today's micro and nano-servo's putting out as much or more than the standard servo's of yore, is it the small size and tiny gears stripping out easier? We're looking at some awfully small teeth on the gears no matter what their torque ratings are.

Are you willing to give up a little weight to install a smaller, weaker servo? If weight seems to be an issue over reliability then there are other places to put the boat on a diet. That couple of gram loss might be what you wished that you had while your boat is going WOT towards the shore with no control!

you are CORRECT, ron!! the weight is nothing, reliability is EVERYTHING

. i don't think it's torque, i agree with your thoughts about tiny gears. with the entire engine assembly bouncing around on the transon, i believe A LOT more shock load is transferred to the servos on an ob, than on an ib.

 

[Tim leyde]

That's what I'm wondering. Is the additional drag from the throttle cable as opposed to 2-56 or 4-40 rod making it so that you need a stronger servo?

With today's micro and nano-servo's putting out as much or more than the standard servo's of yore, is it the small size and tiny gears stripping out easier? We're looking at some awfully small teeth on the gears no matter what their torque ratings are.

Are you willing to give up a little weight to install a smaller, weaker servo? If weight seems to be an issue over reliability then there are other places to put the boat on a diet. That couple of gram loss might be what you wished that you had while your boat is going WOT towards the shore with no control!

you are CORRECT, ron!! the weight is nothing, reliability is EVERYTHING

. i don't think it's torque, i agree with your thoughts about tiny gears. with the entire engine assembly bouncing around on the transon, i believe A LOT more shock load is transferred to the servos on an ob, than on an ib.

Absolutely

 

[Kevin Krogness]

Www.getflexseal.com just watched the commercial. Kept a boat afloat with holes drilled in the bottom!!!

 

[Ron Olson]

Kevin, you haven't tried that stuff then. My father-in-law buys a lot of that stuff that's sold on TV, he gave my wife some. She used it on something in the house which is no place that you'd want to try it at as the fumes are awful!

 

[moparbarn]

that stuff actually works, kevin & ron. my brother-in-law built a wooden bird bath & sealed it with flexseal. it has lasted all year with no leaks. pressure treated 2x4's, miter cut corners, stacked slightly offset to taper out & up, with an exterior plywood base. 2 coats inside, let it cure for about a month to try to be sure it wouldn't affect the water quality. that was back in april, like i said - no leaks. i was surprised, most of the "as seen on tv" stuff is crap.

 

[David Bryant]

That's what I'm wondering. Is the additional drag from the throttle cable as opposed to 2-56 or 4-40 rod making it so that you need a stronger servo?

With today's micro and nano-servo's putting out as much or more than the standard servo's of yore, is it the small size and tiny gears stripping out easier? We're looking at some awfully small teeth on the gears no matter what their torque ratings are.

Are you willing to give up a little weight to install a smaller, weaker servo? If weight seems to be an issue over reliability then there are other places to put the boat on a diet. That couple of gram loss might be what you wished that you had while your boat is going WOT towards the shore with no control!

you are CORRECT, ron!! the weight is nothing, reliability is EVERYTHING

. i don't think it's torque, i agree with your thoughts about tiny gears. with the entire engine assembly bouncing around on the transon, i believe A LOT more shock load is transferred to the servos on an ob, than on an ib.

Absolutely

yeah, this (small teeth on gears) definitely makes sense for the hanging outboard engine load.

I'm concerned whether to use a micro servo (Airtronics 94813: metal gear, 54oz torque/.16s @6V) for throttle control on .45, .67, or .80 size outriggers?

 

[Ron Olson]

I wouldn't worry about use in a 'rigger as you can feel, it really doesn't take much to move the throttle arm.