I had the same issues with the Ncx in combination with my SDM blue mast. My solution was to completely release the tension of all the battens, screw it back till the screw is flaw with the batten. Then pull down the downhaul so the 4th window is half way loose leach. The outhaul need a bit tension. After that screws the battens till you find a bit tension. After that my rotation was pretty easy. My issue was that the battens had to many tension during rigging, that gives the problem that the sail wasn't fit in the right way.
Yesterday I tried again to assemble a sail on the mast of the sdm. I watched the Video of Karo van Allen where she collects NCX. And she says that she works well on sdm. And he talks about it in the comments, too. I tried again to make sure. It didn't work out for me. I had to pull very hard on the mast. That you were going for a dream until the middle. According to the nickname, I pulled it as it is written on the sail. It didn't work well anyway. I kicked with my foot to switch. And the sail became flat and pulled badly. It works perfectly on the RDM mast. And pulls well and switches.
Try to use a shorter extension and see the results...I tell u why a suspect the extension..For me the extra lenght of the etension the goes inside the mast makes it stiffer and so will not bend the way it should..or will start bending upper in the mast, causing. So just think of two masts, one inside the other...harder to bend...
Hi, thx for your comment. I understand what you mean but not sure if that will have an affect. The SDM extension was set at 22 and the RDM at 4 - in that way the RDM should be far more rigid inside the mast, that was not my experience. Anyway, I do only use RDM now and the sails works very well :)
Try to use a shorter extension and see the results...I tell u why I suspect the extension..For me the extra length of the extension that goes inside the mast makes it stiffer and so will not bend the way it should..or it will start bending upper in the mast, causing all kind of issues. So just think of two masts, one inside the other...harder to bend...
My NCX´s are from 2019 and 2020, I have also had from 2015 and 2021. The sails are tighter with higher skin tension and more pressure batten/luff through the years, so yes SDM may go ok enough on earlier models. Severne says both RDM/SDM shall fit. But, I remember well that the rotation and need for much more downhaul always was a issue, also on the 2015. So my conclusion are RDM, and for me and my sails it’s a huge difference, the sails perform more or less perfect both when freerace on fin and freeridefoiling, will never use a SDM again that’s for sure.
@@Just-Windsurf Yes, I won't use it on sdm anymore either. I wanted to try it on Turbo 8.1. But I think it's better to use a sdm mast on big sails. The Severn website advises so. What do you think about this?
@@Kuper133 Turbo 8.1 have 2 SDM cams, then SDM mast will be needed but I have never tried on RDM (rig and try to test?). It´s possible to change the Turbos to RDM cams. I use RDM mast in all my sailrange from 3.7 to 7.5. If sails require 490 mast or longer then SDM are probably the best fit.
I'm probably boring you already with my questions, but I just like to figure everything out. And you're a professional, that's why I'm consulting with you.🙂
Hi, thx for the comment. Sorry for late reply, I have been out windsurfing, today 3 hours with 7.0 on RDM460 and the other day foiling with 7.5 on RDM460. It's a huge difference in performance of the sail/rig, I will say as good as it shall be. I can't agree on that more outhaul will solve rotation issues, I have tried that as well by normal trimming of the outhaul, but to pull a heavy load on the outhaul will only flatten the profile in the sail and not pull the battens away from the mast (that may only be done by trimming the downhaul, but in this case the sail will be totally overpulled to achieve a rotation). A good 'rule' is that it's not a good idea to try compensate to little downhaul with more outhaul. Anyway, I now rig on RDM and apply a normal/setting on both downhaul and outhaul, that gives the sail the profile it shall have for a good performance, that is the fact I'm showing in the video.
Thx for the comment. Sorry, but on a no-cam sail, shorter battens will make no difference? The battens makes the profile and skin-tension have to be set, to do so the battens have to be all the way in the batten-pocket/sleeve. If compared with a freeride sail the batten-sleeve have a bigger distance to the mastluff, it's a major difference to ensure easy rotation/performance. So, my experience, by using RDM the NCX can be used as designed. If over-downhauling i.e. a 7.0 it will become to a very bad 6.0-6.5, no one want to do that but It's quite a common mistake, and I think it's mainly caused by lack of knowledge.
@@Just-Windsurf Hi Stig, it makes sense what you mention in your comment. I don't know the sales from Severne plus I'm only used to sail with camber sales. I only have one without (Speedster 6.7). Only using that when the wind is so hard that it will always rotate :-).
Not enough downhaul. Downhaul the sail until it rotates and you will see that it is also a lot faster and has better acceleration. It doesn’t matter if it doesn’t look allright on land. It’s how it sails on the water. Hang loose!
Hi, thx for the comment. Please see my answer regarding outhaul. I have tried downhaul (on SDM) to achieve rotation, the sail will then be way over downhauled and downsized, and the worst are that the sail are in so much pressure in the lower part that it can suddenly separate. To over downhaul make a 7.0 into a crappy 6.0. I now rig on RDM and for the first time ever the performance are good, not only the rotation but overall performance. Of course if you have your NCX on SDM and you are happy with it that’s good, but you see the difference when on RDM and I hope you understand why I choose RDM. Yesterday I was on the water with 7.5 for 4 hours, both foil and fin, it’s such a big difference to sail with a proper rigged 7.5.
@@Just-Windsurf I’ve used the NCX on SDM and downhauled until the batten is half way on the mast. No way the sail “separates”. The NCX is closer to a race sail than to a wave sail. So it is used a size bigger than you would expect if you’re used to a wave sail. You can use it under downhauled on rdm, but in that case you would probably be happier on the freeride sail that is closer to a wave sail (Gator?). Just go to a shop/severne distributor and ask them to show the downhaul setting for the sdm mast instead of blaming them on youtube that their product isn’t right. It’s a perfect sail on SDM.
@@poehaaa4642 It’s nice to hear it works for you and it’s good with different opinions/experiences 👍 Well I have been in contact with Severne and the distributor, they are helpful and they also pointed me in the direction to use RDM. This is not like I rigged the sails one time and then gave up, I have tried any trim possible the last 3 years and with 3 Severne 460 SDM masts and several sails. My 2021 NCX 7.0 did separate in the lower panel 😢 that may of course have been a fault from production, but that sail was also rigged in the shop to try to find a match downhaul versus rotation. As I read it from you, you find a good match when batten is half way on the mast. Sorry but that really don’t work with my sails, not on land and definitely not in performance on the water. Anyway, this video are mainly for those having rotation issues, and I’m fully aware of that rigging can be a highly “personal” matter.
Severne has finally realised that their NCXs works better on RDM (see their site now, they recommend those finally, sic) I have been an advocate for RDM on “slalomish” sails for ages, and I am happy the industry (or some of them) are coming to embrace it (if only for freerace/freeride discipline that is), I know of many people that had rotation problems with their NCXs on SDM so you are not alone there, as for me I have used several NCXs but only once on SDM, and indeed it was much sturdier/hard to rotate, in fact I right away changed it for my much loved RDM, must say that I prefer RDM solely for their easier compact handling and not for any higher performance in top ends etc, you see for as much as I like going fast, I am not a pro nor I take part in amateur races or whatsoever, just wanna rig easier and faster, that’s it, to each his own of course, peace 🤙🏻💙🤙🏻
I had the same issues with the Ncx in combination with my SDM blue mast.
My solution was to completely release the tension of all the battens, screw it back till the screw is flaw with the batten. Then pull down the downhaul so the 4th window is half way loose leach. The outhaul need a bit tension. After that screws the battens till you find a bit tension. After that my rotation was pretty easy.
My issue was that the battens had to many tension during rigging, that gives the problem that the sail wasn't fit in the right way.
Yesterday I tried again to assemble a sail on the mast of the sdm. I watched the Video of Karo van Allen where she collects NCX. And she says that she works well on sdm. And he talks about it in the comments, too. I tried again to make sure. It didn't work out for me. I had to pull very hard on the mast. That you were going for a dream until the middle. According to the nickname, I pulled it as it is written on the sail. It didn't work well anyway. I kicked with my foot to switch. And the sail became flat and pulled badly. It works perfectly on the RDM mast. And pulls well and switches.
Unscrew thé batten, then carefuly scre them again until enough tension but not too much
Try to use a shorter extension and see the results...I tell u why a suspect the extension..For me the extra lenght of the etension the goes inside the mast makes it stiffer and so will not bend the way it should..or will start bending upper in the mast, causing. So just think of two masts, one inside the other...harder to bend...
Hi, thx for your comment. I understand what you mean but not sure if that will have an affect. The SDM extension was set at 22 and the RDM at 4 - in that way the RDM should be far more rigid inside the mast, that was not my experience. Anyway, I do only use RDM now and the sails works very well :)
After flipping the sail, only pull/pump with your back hand! :-)
Thx for your comment. SDM mast are sold. I still can pump when I want, but now I don’t need to waist my energy at each flip 😁
Hey. Have you tried rigging a 7.0 sail on a 430 RDM mast with a 34 extension?
Hi. No sorry I have not tried 430 on a “460” sail. Maybe I will try one time later.
Try to use a shorter extension and see the results...I tell u why I suspect the extension..For me the extra length of the extension that goes inside the mast makes it stiffer and so will not bend the way it should..or it will start bending upper in the mast, causing all kind of issues. So just think of two masts, one inside the other...harder to bend...
I have a 2022 NSX. maybe the sdm mast is suitable for earlier models?
My NCX´s are from 2019 and 2020, I have also had from 2015 and 2021. The sails are tighter with higher skin tension and more pressure batten/luff through the years, so yes SDM may go ok enough on earlier models. Severne says both RDM/SDM shall fit. But, I remember well that the rotation and need for much more downhaul always was a issue, also on the 2015. So my conclusion are RDM, and for me and my sails it’s a huge difference, the sails perform more or less perfect both when freerace on fin and freeridefoiling, will never use a SDM again that’s for sure.
@@Just-Windsurf Yes, I won't use it on sdm anymore either. I wanted to try it on Turbo 8.1. But I think it's better to use a sdm mast on big sails. The Severn website advises so. What do you think about this?
@@Kuper133 Turbo 8.1 have 2 SDM cams, then SDM mast will be needed but I have never tried on RDM (rig and try to test?). It´s possible to change the Turbos to RDM cams. I use RDM mast in all my sailrange from 3.7 to 7.5. If sails require 490 mast or longer then SDM are probably the best fit.
@@Just-Windsurf On Turbo 8.1, the mast is also 460
I'm probably boring you already with my questions, but I just like to figure everything out. And you're a professional, that's why I'm consulting with you.🙂
Not enough outhaul.
Hi, thx for the comment. Sorry for late reply, I have been out windsurfing, today 3 hours with 7.0 on RDM460 and the other day foiling with 7.5 on RDM460. It's a huge difference in performance of the sail/rig, I will say as good as it shall be. I can't agree on that more outhaul will solve rotation issues, I have tried that as well by normal trimming of the outhaul, but to pull a heavy load on the outhaul will only flatten the profile in the sail and not pull the battens away from the mast (that may only be done by trimming the downhaul, but in this case the sail will be totally overpulled to achieve a rotation). A good 'rule' is that it's not a good idea to try compensate to little downhaul with more outhaul.
Anyway, I now rig on RDM and apply a normal/setting on both downhaul and outhaul, that gives the sail the profile it shall have for a good performance, that is the fact I'm showing in the video.
Just out haul one more 🤣
🤣 I think you mean it ironic 🤣 If not see the other 'outhaul' comment below 👍
Maybe you can shorten your batten a bit?
Thx for the comment. Sorry, but on a no-cam sail, shorter battens will make no difference? The battens makes the profile and skin-tension have to be set, to do so the battens have to be all the way in the batten-pocket/sleeve. If compared with a freeride sail the batten-sleeve have a bigger distance to the mastluff, it's a major difference to ensure easy rotation/performance. So, my experience, by using RDM the NCX can be used as designed. If over-downhauling i.e. a 7.0 it will become to a very bad 6.0-6.5, no one want to do that but It's quite a common mistake, and I think it's mainly caused by lack of knowledge.
@@Just-Windsurf Hi Stig, it makes sense what you mention in your comment. I don't know the sales from Severne plus I'm only used to sail with camber sales. I only have one without (Speedster 6.7). Only using that when the wind is so hard that it will always rotate :-).
Not enough downhaul. Downhaul the sail until it rotates and you will see that it is also a lot faster and has better acceleration. It doesn’t matter if it doesn’t look allright on land. It’s how it sails on the water. Hang loose!
Hi, thx for the comment. Please see my answer regarding outhaul. I have tried downhaul (on SDM) to achieve rotation, the sail will then be way over downhauled and downsized, and the worst are that the sail are in so much pressure in the lower part that it can suddenly separate. To over downhaul make a 7.0 into a crappy 6.0. I now rig on RDM and for the first time ever the performance are good, not only the rotation but overall performance. Of course if you have your NCX on SDM and you are happy with it that’s good, but you see the difference when on RDM and I hope you understand why I choose RDM. Yesterday I was on the water with 7.5 for 4 hours, both foil and fin, it’s such a big difference to sail with a proper rigged 7.5.
@@Just-Windsurf I’ve used the NCX on SDM and downhauled until the batten is half way on the mast. No way the sail “separates”. The NCX is closer to a race sail than to a wave sail. So it is used a size bigger than you would expect if you’re used to a wave sail. You can use it under downhauled on rdm, but in that case you would probably be happier on the freeride sail that is closer to a wave sail (Gator?). Just go to a shop/severne distributor and ask them to show the downhaul setting for the sdm mast instead of blaming them on youtube that their product isn’t right. It’s a perfect sail on SDM.
@@poehaaa4642 It’s nice to hear it works for you and it’s good with different opinions/experiences 👍 Well I have been in contact with Severne and the distributor, they are helpful and they also pointed me in the direction to use RDM. This is not like I rigged the sails one time and then gave up, I have tried any trim possible the last 3 years and with 3 Severne 460 SDM masts and several sails. My 2021 NCX 7.0 did separate in the lower panel 😢 that may of course have been a fault from production, but that sail was also rigged in the shop to try to find a match downhaul versus rotation. As I read it from you, you find a good match when batten is half way on the mast. Sorry but that really don’t work with my sails, not on land and definitely not in performance on the water. Anyway, this video are mainly for those having rotation issues, and I’m fully aware of that rigging can be a highly “personal” matter.
Severne has finally realised that their NCXs works better on RDM (see their site now, they recommend those finally, sic) I have been an advocate for RDM on “slalomish” sails for ages, and I am happy the industry (or some of them) are coming to embrace it (if only for freerace/freeride discipline that is), I know of many people that had rotation problems with their NCXs on SDM so you are not alone there, as for me I have used several NCXs but only once on SDM, and indeed it was much sturdier/hard to rotate, in fact I right away changed it for my much loved RDM, must say that I prefer RDM solely for their easier compact handling and not for any higher performance in top ends etc, you see for as much as I like going fast, I am not a pro nor I take part in amateur races or whatsoever, just wanna rig easier and faster, that’s it, to each his own of course, peace 🤙🏻💙🤙🏻