my water sliders and builds

[sundog]

Wataslyd, didn't mean to hijack your thread! Rumdog, LOL, I can see there's no convincing you. No worries, just a difference of opinion. Begood, Sdg.

[Rumdog]

I don't agree with your version of common sense, I guess. Consider the fact that your propwash is moving circularly, not just aerating the water. Its hitting 3 surfaces on the blade.

You wont convince me, since you're not correct.

[sundog]

Ha! OK, well let's do this again. Look up a picture of a stator in a jet drive engine. See how it is like little rudders in a circle? It's purpose is to redirect the circular water 'cone' to an inline force directly aft. Now imagine an inline rudder is doing the same thing - more of that force is directed where it will do the most good - aft. This negates any 'force pushing itself backwards' that's why I mentioned the sailboat scenario. If that fan had been on the dock and not the deck it wouldhave done some good. Prop being attached to said boat - same idea. Add to that the lower drag of the rudder being in frothy water and it adds up to more speed. We were talking more speed, weren't we? I'm not contesting adverse handling or whatever, just potential for top speed. If that doesn't makes sense, I'm just not a good teacher.

[drwayne]

Clean prop cone shows a good propeller at work .. but once that water leaves the prop it is static with water beneath the hull, just aerated.. the rudder will see no more water than if offset .. the volume of prop cone = same water as in free water.
rudder inline divides the force from the cone.. and this aids in steering... offest to R are hard to turn L at high speed.
But inline Vs offset and one is faster.... evidence not argument fellas...

[sundog]

Thank you Wayne. What I was hoping for was someone who has made the comparisons (same boat/setup, both rudders) to pitch in here about which was faster. But I suppose we'd get similar redundant references to handling characteristics, etc. thrown in to muck up the debate. Yes, evidence, not arguments I agree. Time to call in the jury on this one.

[wataslyd]

hello all it came and the parts i had orderd for the spartan


i have some questions for this hull ,anyone build one before ,

got the motor mounted and found a sweet spot for 6s??

[wataslyd]

hello all ,i have a question about this vs1,this hull is rough and alot of overlapage ,is this hull safe to do some smoothing and reshapeing ,and i did the new set of water pickups for the spartan ,

[wataslyd]

hello all

[jevmax]

Saying the prop wash hitting the rudder slows the boat down reminds me of a cartoon of a sailboat - its sails inflated by fan sitting on the deck. Does it move forward?, or will it move forward faster with the fan facing rearwards! I can understand an offset rudder countering a tendency to prop walk, but an inline 'slowing the boat' down just doesn't make sense to me. After doing a search on inline vs offset, it appears the jury is still out on this. I'm still convinced an inline is faster, steering factors notwithstanding.

What has "convinced" you that an inline rudder is faster?

[sundog]

What has "convinced" you that an inline rudder is faster?

Well, that was last week. After your analogy of the 4" wide rudder (how fast would it go) on that other thread, I'm not quite as sure now!

[Steven Vaccaro]

Hundreds of people have modded the stock Ms.Geico from a inline setup to an offset rudder for a reason. Im not missing anything here. I've owned and built boats with inline setups and offset. Needless to say, for me much more have been offset for a reason as well. Inline is mostly used for convienience. Single drive cats with minimal transom surface use them mostly. Start a new thread. Or just do a forum search.Also, you're rudder, especially with an inline setup will rarely be perfectly straight. You'll need some rudder trim to help it go straight.

the Geico is a poor example.. People changed to offset not for more speed, but to stop the bounce.. Offsetting did neither.

[wataslyd]

hi all i have a question i have the exact speed control as in the miss geico
its rated at 45 amps. i have a few motors but there all 60-65 amps what are
the concerns and cautions. also i read that this speed control has a Max input
of 21volts .but it reads in the package 5s Max.and kv is like what it takes to run??

[newbie4life]

As far as the steering debate that seems to be taking place here. anyone ever tried to put the steering system from a villain (or something like it) on a catamaran hull? I have a villain ex that i have exceeded the limits of and i am thinking about swapping the guts out to a cat hull. yes i'm wanting to swap both drives.