Maggie’s Motivational Pic Thread v2.0 - - New Rules - See Post #1

[Skeet25]

 

[Skeet25]

 

[Skeet25]

 

[Skeet25]

 

[Skeet25]

 

[FWoo45]

View attachment 8473152

1936 Olympic swimming medalists​

2,1,3

 

[Skeet25]

 

[Blue Sky Country]

JD Vance and Usha Chilukuri Vance. ❤❤❤

 

[Skeet25]

 

[Skeet25]

 

[MrSmith]

View attachment 8473266

Wonder how many blades his razor has?

Thank you,
MrSmith

 

[Skeet25]

 

[Skeet25]

 

[Skeet25]

 

[brianf]

Everybody does.

Problem is they are hit with clothes on because the outfits are cool..but none of them go to the gym.

Get one naked and it’s a pile of pale dough..ask me how I know lol

 

[Skeet25]

 

[Skeet25]

 

[Skeet25]

 

[Skeet25]

 

[Devildog]

 

[Skeet25]

 

[Skeet25]

 

[kl3309]

The downside with outboards is it takes blade area in the water to push the boat, and outboards are pretty limited in that reguard. So that's usually when you start seeing a bunch of outboards, more props to push the load.

How much efficiency do you lose by having so many (5 or 6) props so close together? I'd think that you'd get some drag from all of the vortices forming right next to each other, at least in the center.

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

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[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[JerkyFreak]

Strangely, I'm quite turned on...

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[Jefe's Dope]

 

[JerkyFreak]

If I fits, I sits.

 

[jbuck88]

How much efficiency do you lose by having so many (5 or 6) props so close together? I'd think that you'd get some drag from all of the vortices forming right next to each other, at least in the center.

So I'm going to get into some guessing. Prop tip clearance on inboard and semi-planing hulls is around 10 to 15% of the diameter of the prop. So if that holds true for planing hulls then a 18" prop needs a minimum of ~20" on center. Most outboards I know have a minimum of 25-26" on center for mounting them.

A lot of the drag on a boat comes from the running gear, not just the prop. A lot of the fast inboard boats are either made with prop pockets to tuck all of that up tighter or even out of the water. Or run surface piercing drives so that only half of the prop is in the water at any time.