www.severnesails.com//booms/severne-lockjaw

Here is the video i put together for the new Severne Lockjaw boom head




a seriously sweet boom head (i have been using one for the last 9 months) full of some real technological advancement

The boom uses grip and contact instead of ridiculous amounts of point loading tension to do its job.

Its is is dedicated rdm or sdm - so no silly mast adaptors required

The handle is super smooth and the ergonomics of attaching the boom are unrivalled.

Its standard on Enigma, Metal and blueline booms

lots more cool stuff on the VERY fancy new website

www.severnesails.com/

Reflex Films said...
a seriously sweet boom head (i have been using one for the last 9 months) full of some real technological advancement

of course you wouldn't be one bit bias

I think i,ve missed something. I didn,t see anything new????
Been using booms for at lease 4 yrs that don,t need an adapter to go from STD to RMD and no point loading. They do look nice though

I dont know what is so revolutionary about the boom head

this one also uses grip and contact, has a pivoting attatchment to stop point loading and comes with an adapter so you dont need to swap boom heads in the the cross over size sails that use sdm or rdm masts.

Looks good Matt. Makes too many weird noises for me though.

Looks like the current clamp system they use which is rubbish it just clamps the back and front . My inigma boom moves more in the clamp than my cheap prolimit .

Troppo said...

Its actually a Chinook head developed in conjuction with Aeron as far as I'm aware. You will see them on a lot of brands booms. Probably because they work really well.

Autima, Aeron you know what I meant

Does yours squeak and groan a bit though?

- the ergonomics and geometry of the rope to sleeve action are just so nice - its just super easy to pop on to the mast and attach - takes about 3 seconds to pop on

I struggle when i go back to the old generic heads now - and the loads that the current standard generic designs run just seem super excessive by comparison - especially on SDM masts - which i have actually seen broken by riders running firm tensions and transferring point loads onto the mast wall

i welcome the skepticism
- yes -i agree its definitely more evolutionary refinement than revolution - if you are curious at all check one out in a shop over summer and you will get some insight into how well finished, engineered, ergonomic and mast friendly these are.

The head also easily swivels 90 degrees into low profile travel mode - which is pretty spiffy!

Reflex Films said...



The head also easily swivels 90 degrees into low profile travel mode - which is pretty spiffy!

So does the Chinook head.

l like the built in flashlight at 1.25min.

Revolutionary is the north boom with the iFront boom end which allows movement and even that has been out for while...

So real revolution is get rid of the dam rope

Mark _australia said...

FlickySpinny said...

Mark _australia said...

Barn - you have bent a M6 bolt thru a boom head before? When it runs through a block of FRP so it is supported along most of its length (same as Chinook/Autima/Severne system above) ????

Without fk'ing the rest of said boom?

I could also have misunderstood, but I wouldn't put it past him.

I'm not exactly kind on my kit, but Barn is in a different league. I've seen him sail whilst trying to learn to Air Funnel. He smashed himself and his kit a couple of hundred times that day and still kept coming back for more. Have also seen video of a stalled forward from zero altitude... and the massive failure that preceded that (post the vid Barn - I can't find it). If anyone can bend that bolt, Barn can. Nutter.

I am sure Barn makes Evil Kneivel look lame.
The Crusty Demons like amateurs.
In all seriousness he is waaayyyy better than me.

BUT regardless, there is a point where putting a fatter bolt in a plastic bit is worthless as so many things can fail before the bolt.
We don't use a class12.9 8mm sockethead capscrew thru a watch strap for example. That would be dumb.

I still say a 6mm stainless bolt thru the hingey bit is more than enough, and 8mm is just marketing spin as everything else is Chinook/Autima/Simmer/KA clone with different coloued bits and they wanted to set it apart a bit.
Barn may disagree, after he is done kicking Chuck Norris' arse he can come back and let us all know.

They have a point, I have replace many a bent bolt in my booms

jsnfok said...

Mark _australia said...

FlickySpinny said...

Mark _australia said...

Barn - you have bent a M6 bolt thru a boom head before? When it runs through a block of FRP so it is supported along most of its length (same as Chinook/Autima/Severne system above) ????

Without fk'ing the rest of said boom?

I could also have misunderstood, but I wouldn't put it past him.

I'm not exactly kind on my kit, but Barn is in a different league. I've seen him sail whilst trying to learn to Air Funnel. He smashed himself and his kit a couple of hundred times that day and still kept coming back for more. Have also seen video of a stalled forward from zero altitude... and the massive failure that preceded that (post the vid Barn - I can't find it). If anyone can bend that bolt, Barn can. Nutter.

I am sure Barn makes Evil Kneivel look lame.
The Crusty Demons like amateurs.
In all seriousness he is waaayyyy better than me.

BUT regardless, there is a point where putting a fatter bolt in a plastic bit is worthless as so many things can fail before the bolt.
We don't use a class12.9 8mm sockethead capscrew thru a watch strap for example. That would be dumb.

I still say a 6mm stainless bolt thru the hingey bit is more than enough, and 8mm is just marketing spin as everything else is Chinook/Autima/Simmer/KA clone with different coloued bits and they wanted to set it apart a bit.
Barn may disagree, after he is done kicking Chuck Norris' arse he can come back and let us all know.

They have a point, I have replace many a bent bolt in my booms

Yup I've bent mine and I'm only 80kg. Its was a pretty horrific catapult though. Also bent my dakine harness bar at the same time.

Another bolt-bender here...also don't understand all the noise about the boom head in the vid - looks pretty, but basically the same as other boom heads. I was expecting some electronic self-tightening gadget, or adjustable height on-the-fly type setup.

Does it have an integrated stubby holder in it anywhere ?

Or iphone5 socket ?

robbo1111 said...




Dont know how good these Streamlined ones were but they were definitely revolutionary.

What about the old Peter Cabrinha double-head boom - anyone remember them?

These are really light, strong and super stiff, but the webbing gradually slips. Every three or four sails you need to re-tighten it and this is pretty fiddly and annoying. I'll give it 7/10.

This new Severne design, however, is a complete revolution! I can't believe nobody has thought of this before - windsurfing will never be the same again!