Outrigger Questions

[Mick J]

Just got a few questions pertaining to outriggers in general, hopefully all you rigger gurus will be able to point me in the right direction.

What function do rear sponsons perform (lift out of corners maybe ?)?

What function do rear winglets perform (or are they asthetic )?

Is there a key figure (ie percentage of sponson length etc) that rear sponsons should be length wise/depth etc?

The reason I ask is that I have just scratch built myself a new outrigger for a spare Zenoah I had laying around (sorry, not Nitro this time). It currently doesn't have rear sponsons or winglets, but it has exceeded my expectations thus far. I'm in the process of building a new tub (cause I can) and were wondering about the above stuff in general principal.

Thanks in advance

Johno h34r:

 

[Preston_Hall]

Rear sponson keep the rear from sinking into the water. Or to hold it up when the boat wants to drop. The winglets help keep the boat from hopping or coming up. You really don't need either until you get into rough water where the boat will tend to be unsettled.

Sponson theories? You will get 100 different answers.

 

[Don Ferrette]

Another thing rear sponsons do for you is help control your boat when it gets out of shape. Take a rigger with rear sponsons, set it on a table. Then lift one of the front sponsons up, you'll see the opposing rear sponson make contact with the table. That's why you'll typically find a rigger with rear shoes will be a much better heat race boat than one without. B)

 

[Paul Pachmayer]

Hey Guys,

I've had riggers with rear shoes and without and I prefer without.

Paul.

 

[EatMyShortsRacing]

Hey Guys,
I've had riggers with rear shoes and without and I prefer without. 

Paul.

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Also depends on what torsional attitude (like that description, eh?) you like your boats running. If you are brave enough and like the one sponson at a time dancing down the straights then no rear sponsons is for you. like running flat then go the rears. Rears can also help with buoyancy at the rear to help the boat get up on plane... that means easier launching or a lil bigger prop....

EMS Racing Beer? Place torsional attitude on arm.

 

[Eric Perez]

Hey Guys,
I've had riggers with rear shoes and without and I prefer without. 

Paul.

66680[/snapback]

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Also depends on what torsional attitude (like that description, eh?) you like your boats running. If you are brave enough and like the one sponson at a time dancing down the straights then no rear sponsons is for you. like running flat then go the rears. Rears can also help with buoyancy at the rear to help the boat get up on plane... that means easier launching or a lil bigger prop....

EMS Racing Beer? Place torsional attitude on arm.

66894[/snapback]

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Yea, my shoe-less rigger does the merenge in the straight-a-way...

Seriously, my rigger with rear spoons rides real smooth and no funny stuff in the corners either.