SigmaDrive - good investment for some (?)

[Justin_NSA]

Just when I think I want to cancel my Sail magazine subscription they print something interesting to me. This new constant velocity coupling has some nice advantages over traditional setups. I imagine those who motor a lot would see the most benefit. It's pricey, but if you are facing a new coupling replacement, it doesn't hurt so much. Watch the video. See what you think

Bruntons SigmaDrive - Stops Noise and Vibrations

SigmaDrive is a constant velocity joint which allows the propeller shaft to rotate without transmitting the engines movements and vibrations

www.ab-marine.com

 

[rgranger]

That is very cool! Even though it is pricey, it seems to lend itself to the DIY crowd... which would counter some of the cost of having a shaft professionally installed and aligned.

I have also been looking at this innovation by OceanVolt...

Sail drive - Oceanvolt

OCEANVOLT sail drive motors Oceanvolt offers a range of sail drive motors to provide propulsion and hydro generation for vessels ranging from 15 to 80 feet. Sail Drive (SD) Synchronous permanent magnet electric motor. Sail Drive with 1.93:1 reduction. Lightweight: weighs as little as 42.5kg...

oceanvolt.com

Monohulls

Sailing monohulls is about experiencing the ocean in its purest form—effortless gliding through the waves, powered by the wind.

oceanvolt.com

I guess if I had deeper pockets...

 

[Justin_NSA]

That is very cool! Even though it is pricey, it seems to lend itself to the DIY crowd... which would counter some of the cost of having a shaft professionally installed and aligned.

I have also been looking at this innovation by OceanVolt...

Sail drive - Oceanvolt

OCEANVOLT sail drive motors Oceanvolt offers a range of sail drive motors to provide propulsion and hydro generation for vessels ranging from 15 to 80 feet. Sail Drive (SD) Synchronous permanent magnet electric motor. Sail Drive with 1.93:1 reduction. Lightweight: weighs as little as 42.5kg...

oceanvolt.com

Monohulls

Sailing monohulls is about experiencing the ocean in its purest form—effortless gliding through the waves, powered by the wind.

oceanvolt.com

I guess if I had deeper pockets...

there's always a catch

 

[Tally Ho]

That is very cool! Even though it is pricey, it seems to lend itself to the DIY crowd... which would counter some of the cost of having a shaft professionally installed and aligned.

I have also been looking at this innovation by OceanVolt...

Sail drive - Oceanvolt

OCEANVOLT sail drive motors Oceanvolt offers a range of sail drive motors to provide propulsion and hydro generation for vessels ranging from 15 to 80 feet. Sail Drive (SD) Synchronous permanent magnet electric motor. Sail Drive with 1.93:1 reduction. Lightweight: weighs as little as 42.5kg...

oceanvolt.com

Monohulls

Sailing monohulls is about experiencing the ocean in its purest form—effortless gliding through the waves, powered by the wind.

oceanvolt.com

I guess if I had deeper pockets...

I think that this the unit Sailing Uma just installed on their boat.

they have been working with a home-made electric system and a traditional shaft, but they just installed an electric sail drive.


Greg

 

[rgranger]

I think that this the unit Sailing Uma just installed on their boat.

they have been working with a home-made electric system and a traditional shaft, but they just installed an electric sail drive.


Greg

Very Cool.... I'm interested in how it works out for them. Someday... if I ever buy a bigger boat and have to repower... I'll definitely consider this route.

 

[SG]

Just when I think I want to cancel my Sail magazine subscription they print something interesting to me. This new constant velocity coupling has some nice advantages over traditional setups. I imagine those who motor a lot would see the most benefit. It's pricey, but if you are facing a new coupling replacement, it doesn't hurt so much. Watch the video. See what you think

Bruntons SigmaDrive - Stops Noise and Vibrations

SigmaDrive is a constant velocity joint which allows the propeller shaft to rotate without transmitting the engines movements and vibrations

www.ab-marine.com

AquaDrive has been around for a long time. It's similar. Made in the US, I believe (Marblehead, MA) by Hansen Marine.
We've had one on our J/Boat that came with the boat in 1998.

Welcome to Aquadrive

 

[senang]

“AquaDrive has been around for a long time. It's similar.” I beg to differ. Your drawing clearly shows the thrust bearing attached to the structure of the hull. The Sigma drive IS the thrust bearing and the flexible coupling in one unit. No attachments to the hull!