Hey Joel, thanks for that! We do try and it is hard to break some out of their automated sales pitch… some people’s videos just don’t make it into the videos which is a shame but if it’s not their own thoughts it’s just no good to us. Thanks again for the support 👍😃
Hey Mathew, yeah it’s super how things are similar but very different. Still not many people taking power regeneration seriously yet so the next few years are set to be interesting indeed 👍
Just found your channel thru Sailing Uma, I thought. Then I realized I had been watching several of your videos but never subscribed. You do make some awesome content. Keep up the good work!
Our Amel is 32 years old, has a MaxProp and we have a shaft alternator that produces around 7amps at 24v sailing 6 to 7 knots. We simply put the engine into reverse while sailing forward to get the blades of the prop to lock out. Then we go to neutral and turn off the engine
We had one of those on our last boat, they came as a factory option for the Najads a while back. Great prop you have there, we lived ours but sadly they are no good for hydro-generating.
We are pretty DIY for our electric motor installation (bought a HPEVS AC34 in the UK from an electric car conversion company) and planning a Bruntons Autorop Eco*star
@@SailHub our boat is at Beaumaris on Anglesey. We are now committed to moving aboard and launching in 12 months time. Our two 48v battery banks (4 x 300AH and 4 x 120AH) are installed in a watertight compartment. Motor in a frame ready to fit. Thrust bulkhead built. Currently mostly focused on deck. DIY carbon fibre stanchions and solar rails. Then mizzen mast (diy dyneema chainplates and rigging). Visitors welcome 😁
Sounds really interesting! We need to get our van sorted first and see what happens from there. It would be great to visit, cool project and I have fond memories of the area too! 👍
We at Torqeedo have really god results with the Gori propellers. We use them on the normal non overdrive position. You can take more power out of them bevor they fold back compared to other props.
Cool, thanks for letting us know! That’s really worth knowing for our next project, I would love to see the numbers too! What is it you do at torqeedo?
Application Engineer in the High Voltage / Deep Blue Range. It is hard to get numbers of hydrogeneration, because every boat is different and every prop behaves different. Most important factors are boat speed and diameter. Fast catamaran (14knots) with 17“ Gori folding props will generate 5,6kW. Slow longkeel ketch with 28“ prop will do 1,5kW at 7-8 knots. Soon we will have data from a variable pitch shaftdrive setup, I am looking forward to that.
@@Beamerboy_ sounds fab, I would love to talk further, we have quite a project that we are starting soon, I think it will interest you - www.sail-hub.com
Interesting topic for sure, I'm a bit surprised we're not a bit further forward in the developiment of hydro power for sail yachts, we get the forward motion for free after all! It might not be a factor you want to get involved in but price comparison would be interesting. Good video though, thanks!
@philipwright7186 hey Philip, good to hear from you. Yeah, hydro generating is somehow still a bit of new thing for many companies! We hope to do a ton of testing based around that subject on the boat build we’re on with. As for prices, we’re going to start putting them in the description as they change all of the time making the videos inaccurate.
Love your work - we have a Bruntons Autoprop = I have just redone the bearings as we get ready to cross some ponds..my understanding is diesel is still the cheapest per kilo watt hour - correct me if I am wrong... please can you do a series on Watt and Sea hydrogenerators - they seem controversial in that some love them - and some sailors say they are a waste of money - would love your insights..
Thank you! So, yeah I think your probably right on kw/hr prices. Things will change as sales ride though. There are some aweseome new products out now though which are insanely good at generating huge power! Like the Integrel 9kw alternator, that can also be adapted to run off a shaft drive!
Encountered any electric dingy outboard that have decent regen capabilities? Not having high hopes, but I can easily mount one on the back of my sailboat with the prop facing forward to turn the outboard into an electric hydro generator and recharge the outboard battery when under sail. You can't use your outboard when sailing anyway. Annoys me a bit, would love to have a dual-purpose outboard. I could build my own outboard or hack an off the shelf one, but already have so many other projects... Might also not be possible if outboard motors require a high sailing speed to be able to regen power compared to the low speed motors used in hydro generation. Being able to swap props depending on mode would also be useful.
Propellers - never mind sailing you are moving into power territory here 🙂. I was talking to a boat designer for power boats, particularly twin motor power boats and therefore over a certain power counter rotating props. LH and RH rotation. I ask him if you put them on the opposite sides (for forward propulsion obviously) would it make any difference? He said they potentially could steal water from each other leading to cavitation if put on the wrong sides. Funny enough he said during testing they tried just that, looking for differences in performance. He said on their particular boat it made no difference to performance what-so-ever, but they left them on the wrong sides anyway because - and get this, the wake looked prettier 🙂 Sorry but I couldn't let a sailing channel get away scot-free talking about propellers 🙂
Cool! And your right. I believe counter rotating props can cause cavitation if not far enough away from each other but their main reason is to counteract prop walk 👍 As for us mind, boats are boats! You’ve gotta love em’ all 🤙
@@SailHub My Brother-in-law had a 30 something yacht in Cowes, I had my American Power Boat in Cornwall, he hated me waving at the power boats , (truth be told I love both). All very posh in Cowes. Now surface drives - now we are talking. Lousy in reverse - bit like a sail boat really 🙂
I think Mr Brunton said that the prop needs to spin backwards for hydro generation. I don't think that's correct. The direction of rotation shouldn't change.
I would imagine he was meaning the prop needs to be span backwards to invert the blades, from there the water will spin it in the same direction but with the blades reversed. He’s certainly a switched on guy, we spoke for ages!
@@SailHub to be fair i do have a Brunton Sigma "CV" type coupling on my gearbox/shaft drive on my yacht and it is very well engineered and has been very reliable. So i do think the company, generally speaking, has integrity and credibility.
![Lp. Сердце Вселенной #1 НАЧАЛО ПУТЕШЕСТВИЯ [Новый сезон] • Майнкрафт](http://i.ytimg.com/vi/380Q7gLWGvk/mqdefault.jpg)
Amazing video 🔥🔥🔥🔥
Cheers matey 🤙
I appreciate the way you interview people, feel like you do a good job of keeping them honest
Hey Joel, thanks for that! We do try and it is hard to break some out of their automated sales pitch… some people’s videos just don’t make it into the videos which is a shame but if it’s not their own thoughts it’s just no good to us.
Thanks again for the support 👍😃
I don't own a boat, but I was fascinated by the different companies and their takes on propellers. Super interesting.
Hey Mathew, yeah it’s super how things are similar but very different. Still not many people taking power regeneration seriously yet so the next few years are set to be interesting indeed 👍
Just found your channel thru Sailing Uma, I thought.
Then I realized I had been watching several of your videos but never subscribed. You do make some awesome content. Keep up the good work!
Nice!! Cheers matey! Glad to have you on board 👍
Nice job! I appreciate you asking about power generation and looking forward to what is next big propulsion moves in the work of sailing.
Thanks! We’re right into the regen so do stay tuned 👍
Nice work, this is good made and interesting topic!
Cheers Rolf, much appreciated 👍
Great and informative video about the different props, really helpful! Big Hugs
Cheers Nuno! Great to hear from you!
Catch up soon lad👍
I hope your channel grows, great topic and well prepared and thorough interviews. Look forward to more videos coming. Thank you 🙂
Cheers! Super nice of you to say👍
Our Amel is 32 years old, has a MaxProp and we have a shaft alternator that produces around 7amps at 24v sailing 6 to 7 knots. We simply put the engine into reverse while sailing forward to get the blades of the prop to lock out. Then we go to neutral and turn off the engine
A fantastic comment! That’s great to hear and really valuable info. Thanks! 👍
Great information! Thank you for your effort
Cheers👍
Great presentation 😊
Cheers princess! 😜👍
Look @ jprop! I have it on my yacht for 23 years. No service or parts replaced
We had one of those on our last boat, they came as a factory option for the Najads a while back. Great prop you have there, we lived ours but sadly they are no good for hydro-generating.
We are pretty DIY for our electric motor installation (bought a HPEVS AC34 in the UK from an electric car conversion company) and planning a Bruntons Autorop Eco*star
Guys that’s awesome! Where are you, We would love to come visit at some point! How’s the install going?
@@SailHub our boat is at Beaumaris on Anglesey. We are now committed to moving aboard and launching in 12 months time.
Our two 48v battery banks (4 x 300AH and 4 x 120AH) are installed in a watertight compartment. Motor in a frame ready to fit. Thrust bulkhead built.
Currently mostly focused on deck. DIY carbon fibre stanchions and solar rails. Then mizzen mast (diy dyneema chainplates and rigging).
Visitors welcome 😁
Sounds really interesting! We need to get our van sorted first and see what happens from there. It would be great to visit, cool project and I have fond memories of the area too! 👍
@@SailHubabsolutely beautiful area, although the boat yard is possibly the windiest in the country 🤣
@SustainableSailing yeah, that area got hammered years back and you lost a marina in Anglesey the week after we left. That was pretty bonkers.
We at Torqeedo have really god results with the Gori propellers. We use them on the normal non overdrive position. You can take more power out of them bevor they fold back compared to other props.
Cool, thanks for letting us know! That’s really worth knowing for our next project, I would love to see the numbers too! What is it you do at torqeedo?
Application Engineer in the High Voltage / Deep Blue Range. It is hard to get numbers of hydrogeneration, because every boat is different and every prop behaves different. Most important factors are boat speed and diameter. Fast catamaran (14knots) with 17“ Gori folding props will generate 5,6kW.
Slow longkeel ketch with 28“ prop will do 1,5kW at 7-8 knots. Soon we will have data from a variable pitch shaftdrive setup, I am looking forward to that.
@@Beamerboy_ sounds fab, I would love to talk further, we have quite a project that we are starting soon, I think it will interest you - www.sail-hub.com
Interesting topic for sure, I'm a bit surprised we're not a bit further forward in the developiment of hydro power for sail yachts, we get the forward motion for free after all! It might not be a factor you want to get involved in but price comparison would be interesting. Good video though, thanks!
@philipwright7186 hey Philip, good to hear from you. Yeah, hydro generating is somehow still a bit of new thing for many companies!
We hope to do a ton of testing based around that subject on the boat build we’re on with. As for prices, we’re going to start putting them in the description as they change all of the time making the videos inaccurate.
Love your work - we have a Bruntons Autoprop = I have just redone the bearings as we get ready to cross some ponds..my understanding is diesel is still the cheapest per kilo watt hour - correct me if I am wrong... please can you do a series on Watt and Sea hydrogenerators - they seem controversial in that some love them - and some sailors say they are a waste of money - would love your insights..
Thank you!
So, yeah I think your probably right on kw/hr prices. Things will change as sales ride though. There are some aweseome new products out now though which are insanely good at generating huge power! Like the Integrel 9kw alternator, that can also be adapted to run off a shaft drive!
Discussing Sharrow propellors would have been appreciated.....☹
For sure the toroidal designs are quite interesting but we can’t talk to them if they are not there!
As per Sharrow, when I spoke with them, they're highly optimized for outboard motor applications.
Shame they aren’t so good at folding although we can’t have it all!
No "loop propellers" (like "Sharrow Propeller(TM)")?
Yeah, pretty strange not to see a toroidal prop at the show at all. Hopefully see some next year!
Encountered any electric dingy outboard that have decent regen capabilities? Not having high hopes, but I can easily mount one on the back of my sailboat with the prop facing forward to turn the outboard into an electric hydro generator and recharge the outboard battery when under sail. You can't use your outboard when sailing anyway. Annoys me a bit, would love to have a dual-purpose outboard. I could build my own outboard or hack an off the shelf one, but already have so many other projects... Might also not be possible if outboard motors require a high sailing speed to be able to regen power compared to the low speed motors used in hydro generation. Being able to swap props depending on mode would also be useful.
Definitely, it’s something that people should think about a bit more! What was the outboard?
Propellers - never mind sailing you are moving into power territory here 🙂. I was talking to a boat designer for power boats, particularly twin motor power boats and therefore over a certain power counter rotating props. LH and RH rotation. I ask him if you put them on the opposite sides (for forward propulsion obviously) would it make any difference? He said they potentially could steal water from each other leading to cavitation if put on the wrong sides. Funny enough he said during testing they tried just that, looking for differences in performance. He said on their particular boat it made no difference to performance what-so-ever, but they left them on the wrong sides anyway because - and get this, the wake looked prettier 🙂 Sorry but I couldn't let a sailing channel get away scot-free talking about propellers 🙂
Cool! And your right. I believe counter rotating props can cause cavitation if not far enough away from each other but their main reason is to counteract prop walk 👍
As for us mind, boats are boats! You’ve gotta love em’ all 🤙
@@SailHub My Brother-in-law had a 30 something yacht in Cowes, I had my American Power Boat in Cornwall, he hated me waving at the power boats , (truth be told I love both). All very posh in Cowes. Now surface drives - now we are talking. Lousy in reverse - bit like a sail boat really 🙂
@@Roskellan 😂👍
I think Mr Brunton said that the prop needs to spin backwards for hydro generation. I don't think that's correct. The direction of rotation shouldn't change.
I would imagine he was meaning the prop needs to be span backwards to invert the blades, from there the water will spin it in the same direction but with the blades reversed.
He’s certainly a switched on guy, we spoke for ages!
@@SailHub to be fair i do have a Brunton Sigma "CV" type coupling on my gearbox/shaft drive on my yacht and it is very well engineered and has been very reliable. So i do think the company, generally speaking, has integrity and credibility.
@@chrisheath623 👍
You should of called this video. Prop walk
Haha! Your right, that would have been the perfect title! Thanks! 😁
1st lol
As in first view? What a legend 👍
Ahhh, Jenni’s says you mean lol as in laughter. Mate, I’m so hip!