NO keel! But CAN we Build it ourselves? 

So cool you came back to watch another! Thanks 👍 Yeah we were surprised too! We actually ended up keeping the phone as we missed the return date! It’s being used as a camera now and again. It’s pretty good for that, mind you we’ve never used it to scan since.

Hi Hamish! Thanks for your comments, such kind words and a lot to live up too! Here hoping we can keep you entertained!! 👍⛵️

Hi, thanks for the compliments! Just what we need to keep our spirits up! Great your enjoyed the video and super cool that you have joined us on our journey too!! Hopefully we can sort some of these dark arts out!! 🤙😀

For sure, that would have been ace. Bug with 1 hour in the slings I wasn’t confident enough to use up my only chance with foam due to the hardening time.

Woohooo brilliant! Good to know it works on Android too!! 🤟🏼 What ya gonna scan first? 😉

Nice tips! Thanks for that. So we’re getting on with it now, makers manual have been legendary and I think we have a shape!! Stoked!! Thanks again for the tips!! 👍🏼

Cheers guys, great to hear from you! For sure, must be awesome to see the bairn, and your scans are super 3D too! Ultrasound has come in so much!!

Woah! That’s an insane amount of work! I would love to see it! Could be cool to make new keels, I presume a shorter chord with less frontal area would be the ticket. Add some lead bulbs to minimise the size of the bulbs, would you go a little deeper too to allow less ballast with the same RM? Talking about RM, would you tie the keels in? Possibly increase Venturi? Ooooh the questions! Great to have someone who clearly thinks out of the box in our journey, hope to hear some of your ideas for us and also see what your up too - super interesting! -Chris

@@SailHub Current thinking is lead bulbs on timber/GRP fins and that with an extra 250-300mm draft (1450-1500) righting moment should be similar (probably a little less at low heel angles and more as heel increases) but should save around 4-500kg displacement (currently around 5000kg with ~1000kg in each keel). We have a very good Naval Architect in town so my rationale was to get him to consult on (a) feasibility and if OK, (b) provide design detail. Current Laurent Giles keels are slightly toed in, very thick chord and also low aspect but aside from the immediate drag penalty, I believe with the extended hull we're getting adverse hull/keel interference. However her achillies heel is roll induced heel which makes it unpleasant to steer when she rolls downwind, so if we can improve that it would be a worthwhile exercise. The performance gains are a no-brainer, could potentially reduce wetted surface by nearly 10%, and if done well form drag should decrease markedly as well. A little hard to financially justify as it's a ~STG20K boat and probably will continue to be. If it improved the handling though it would really help the coastal runs which are ~200nm in either direction to the next major ports, heading off with a tail wind is the way to get there. When I was boatbuilding I worked with a Aussie guy who designed and built his own yacht and had sailed it around the world. Amazing light and fast boat but he had a 2 tonne lead bulb with lifting keel. He was amazingly innovative, particularly in ways to save money and used a 4WD winch to both lift the keel and also to lift the anchor. The keel had 3m draft down and the anchor chain was stowed at the base of the keel to keep weight out of the bow. Bow waterlines were quite hollow and the 28hp Kubota could motor them upwind at 6 knots in 25 knots of wind. Not bad on a 44 footer! The lifting keel is wonderful to provide sailing efficiency and good offshore stability without limiting anchoring options. He also used to go into shallow water and dump the keel onto the bottom, then alternately lean the boat to each side to scrub the bottom.

She’s got character that’s for sure!! Stoked you’ve found something new to keep your eye on. If you missed our last video it goes into a bit more detail on our project 🤟🏼 Thanks for your comment, buzzing.

Yeah! New we’re talking! It’s an epic ride that’s for sure, we miss sailing that place soo much! Thanks for the compliments on the boat, keep an eye out for us next year, we hope to be in the UK again!!

Hey, yeah we have that, and the drawings. It’s is aluminium 20mm frame and 10 walls.

Hey! Now that sounds pretty epic! I would need to think about the next part of the process but that’s an interesting thought. Thanks

No way! That’s an epic rebuild! So cool, thanks!! 😎

Cheers lad! Much appreciated ⛵️🤙

Hey, cheers for that! Would love to see the boat that you built!! Progress is slow to be honest as the camper needs to happen first but it’s great to be finally making it all happen! The app we used is Polycam. There are a ton out there for you to try, we went for this one just because of the reviews.

Hey up Henri! Yeah, we know the guys at KM, we’ve met a few times in person and spoken a lot too. Really nice people. We have all the drawings and everything they had for the design from them and also everything form the cutting company they use too - Gaastmeer. Sadly they don’t cast their own lead and the company they use no longer have the drawings. So that’s where we are, but it was good of them to help us with what they could. As for them worrying about a couple on RU-vid, I don’t think they are bothered at all, we all know the quality of their build and I’m sure they will be more than happy with the quality of ours too, however I don’t think they would care either way to be honest.

Hey! Thanks for getting in touch! That’s super kind of you to offer to help too!! I think we’ve got it tied up at moment… but let’s see… it’s never done until it’s done!!! We may well come calling for help!

Yeah, that’s a good idea and we thought of similar but figured out 1 hour timeframe was pushing it too fine for us? The main issue I had for seen was drying the boat down. Unfortunately all of the water on the thing and from inside the lift keel mechanism too runs to the bottom which is where we needed to be… not ideal! The first 1/2 hour was taken up by this drying process and it still wasn’t great. Most likely causing reflection and why the early scans were poor. As it turns out, the guys were super kind and we could had longer and your idea would have been fab! But, could you bank on that and the Scottish weather?!

Cheers Tom! Hope you don’t mind a bit of van action too, we’ve gotta sort that so we have somewhere to live in Switzerland! Super stoked to be getting started on the boat mind!!

Hey Graham, thanks for the input, we’re looking into bulb shapes and also the reality of the beaver tail actually creating any lift. But, we’re running out of time and money too so we will see what we get. I wasn’t planning on tank testing as I know it is. Pretty successful design and I’m not sure the costs of tank testing will be warranted. I would certainly love to do it though! As for weights, we’re looking at 2t, existing hull and mast weigh around 3.5T I’m told however that is just what I’ve been told. As we’re on a farm it’s not so easy to get her weighed although there is always a method, just not sure if I need to make a cradle. Anyhow, plenty to think about! I may push for some prices for some tank testing… 👍 Cheers!

Hey Richard, Thanks for that, I really appreciate you letting us know, it makes all the difference to us! Cheers! 👍

Hi, I’m afraid the iPhones have a specific LiDAR Scanner - it’s the small circle next to the camera lenses on the 15 pro. It specifically measures light alone so I’m sorry it’s iPhone only at present. But… photogrammetry will still work for you, and it’s more accurate in our experience too 🥲

Hello there! Thanks!

Hey up! That’s fab to hear, thanks for jumping aboard! So cool to be in with all thy lot! All great people doing great things! Cheers to Sailors! 🍻⛵️🤙

Yeah, your right! We can’t win everything!! We found the scanning really interesting and the results even more so. At present we are crunching the numbers and deciding on what’s the best option but we now have options which is a step ahead for sure!!

Hi Norman, nice to hear from you! Yeah, I’m really tech averse a lot of the time so so was definitely going to be taking some manual measurements! For all the reasons you suggested, mind you it was interesting crunching the numbers and the scans, we will put something up about it when we’re through the next step. Thanks for taking the time to comment too, super nice of you, cheers Chris 👍

Cool, thanks for that! As I said in the video, I’m rubbish with computers.. so we’ve got a tech wizz working on it with us, I will mention your process to him. Thanks!!!!! 👌👍

Hi Pieter, I’m glad it was useful for you 👍

Hey Tim, I wonder how many people would actually know if they were happy with their keel bulb and would they know how it would be shaped to perform differently? I As for so many things can go wrong? I thought the same and then thought, what can go wrong that can’t be undone?

Hi Eric, great to have you join us. Thank you for the support too!

Cheers laddo! We’re getting there and will no doubt call you in for advice at some point!!!! 👍⛵️

Cheers! Mind you, I was hardly not going to do them! Mind you, we popped them into CAD alongside the scan, the results were astonishing!

Oh they will… but up until now only if they complete the full works. So far the only quotes that came back were for the wrong boat and £16k! Then there was the quote for the correct keel (if I could get the drawings). That came in at 45k! Sadly that’s out of our budget.

Quite possibly! Have you any experience with them? I would have liked to do that but we got the call to say the companies scanner was bust the day before we set off to scotland so it was a case of what we can pick up on the high street!

Hey Daniel, you know your onto it there fella! If I have the skills or money that’s what I would be doing. But I don’t 😂 so we’ve got to make do with what we have but yeah t your plan would be better 👍😀

@@SailHub Well, I'd be happy to see what I could do with your scanned model, since I have the full version of Plasticity. I'm using it for a boat project, so I wouldn't mind seeing what I might learn.... in case you wanna talk about it, lmk. That's with regard to the computer stuff: the fabrication is another thing, but having cleaner data is never a bad thing.

@danieldonaldson8634 Hi Daniel, that’s super kind of you! We actually have all of the CAD work finished at present, if we had known a month ago you would have the job!! If the data is of use to you for your own experiments I can send it through for you still but there’s no need to do anything for us (this time 😂!) Thanks so much for offering though, that is super genuine of you!! Cheers!! 👍👍

Hey Stephen, I think your right within reason. Mind you; a “standard aerofoil”, is maybe a contradiction in itself? What do you mean by this? To my knowledge lift and stall from the aerofoil can be chosen to give that little extra at your chosen speed. We’re not racing but hydro generating at low speed is a significant problem and we need all the extra help we can get! The other thing is the fore aft weight distribution, now in a hull like the G39 here that will make a huge difference if it’s not correct. If she lies with the transom submerged we will create an enormous amount of drag.

Hello wouldn’t know as this was the pro and this is all we can speak about. The best result came from the iPhone 11 with photogrammetry, now that really did shock me!

Ah ha! Thanks for that, I will look him up. Much appreciated, cheers!!!! 😀

Can you reference these episodes - what’s the YT channel name?

@@normanboyes4983 It''s about the total restoration/rebuild of "Tally Ho". The channel name is "Sampson Boat Co".

@@Arnaud58 Ah OK got yer - seen every episode - just did not click with the name (Doug) - thanks.👍

No way! That sounds brilliant! How much does it hold?! We’re nowhere near Tavistock mind bug when we get this roadboat van conversion done it could well be worth the trip!

the design is brilliant I copied it from a rusted out one I was given I melted 4 tons in to 20kg mould and set in hollow steel keel your welcome for free if of use, can send photo but I will have to find it! regards jerry.

@@jerryburrage3238 sounds interesting, we will need to melt the whole 2t in one shot, if we can manage that in it then it sounds like the best news in a long while!

Hey, yeah… it all seems like that but then… Months of trying to contact and no reply, we just had to give up. It’s a shame, they have such a great reputation for designing good boats too.

@@SailHub that’s a shame they definitely had some real cool designs, you have it handled anyway it seems 👍👍

@cnc75adventures49 for sure and they are still drawing and building more! Just not interested in the old by I guess. As for us, yeah… we’re getting on, “handled it”? Not yet, I dare not say that until it’s done! 😆

Thanks Mark! It’s folk like you that keep us going!

For sure, we did loads of scans and found that to be the case too. It didn’t cope well with the water that ran down the keel now and then and it didn’t cope well underneath which I presume will be due to lack of light, despite the light ‘bounce’ we used. It’s a super fast tool which is in general fab, but the photogrammetry was leagues ahead for us.

@@SailHub how close did it come to actual measurements?

@deltacx1059 we are still faffing with it but in general the photogrammetry was within a couple of mm in diameter and I think it was close to 5mm in length. For reference it’s length is 2.34M

Thanks for your kind words! Just the encouragement we need!! Cheers and hope to see you for the next one!

Perfecto!

Cheers Martin! Stoked to be working on the Cad just now. Well, not me so much but it’s cool watching it come together!

😂 I guess when your marital relationship spans both countries it feels like one. But, thanks for making the point. Mind you, it’s worth noting that we’re currently living in the Trossachs too.. 😉

Hey Will, yeah it really surprised me! I can’t wait to see the keel either… we’re on with the cad just now! The van build is coming on too, which is handy as we need it to live in when we start the keel moulds!

I’d you see Nessie you would be loaded mate! Oh, it took about two weeks to be able to film in the shed without the rain pounding on the roof!! Yeah, the lead shot would be great, only there’s not enough space to pour it into. Well, there is the fin but that only holds 1/4 of the required weight at present and it’s also not low enough to get the correct righting moment. Hence the need to make the bulb in the bottom.

P.s Jenni was doing a sun dance for days prior to the lift day in the hope it wasn’t raining for the scan and we lucked out! 😉

@@SailHub ...Well, bother ! Here I was thinking I was clever. If I saw Nessie they'd put me back in the looney bin. Took me ages to tunnel out last time. Can Jenni visit Belgium and do a Summer dance? I overslept last week and now it's winter setting in already. I'll be dead keen to see how you make the mould for the keel bulb. Sand cast or lost wax? Can't wait to see !

Mate! She will be dancing not too far from you for METS in Amsterdam later this year! As for the looney bin, I think we’re still in it and searching for your tunnel. Get yourself back in here, it’s way more fun! Looks like the keel is going to be a winter project, we’re just discussing our propulsion through the rivers home so it kinda has to be a winter project t as we want to launch in late spring!!