which one do you use ?
which one should i look at getting ?
which one are more available ? ( new and 2ndhand )
Which one is cheaper base + extension ?


i already have a euro pin but will need a new extension or
i like the idea of the US cup , as they have push pin on each side to lock
But look like the plastic cup can break

what the different with Tendon and one bolt rubber?
and how tight should the tendon be?

www.surfsailaustralia.com.au/showProduct/Windsurfing/Mast+Bases/394976/Surf+Sail+Australia+Quick+Release+2+Bolt+Rubber+Euro+Pin+Mast+Base

www.surfsailaustralia.com.au/showProduct/Windsurfing/Mast+Bases/c051p/Chinook+Twist-On+%22One+Bolt%22+Tendon+Mast+Base+Euro+Pin

www.surfsailaustralia.com.au/showProduct/Windsurfing/Mast+Bases/399155/Surf+Sail+Australia+Twist+On+One+Bolt+Rubber+Euro+Pin

http://www.surfsailaustralia.com.au/showProduct/Windsurfing/Mast+Bases/2000/Streamlined+Twist-On+Uni+With+Base+Cup

If you go the euro pin then the only one to get is the chinook that's machined out of a single piece of stainless, other brands bond/screw in two pieces of metal that rust out and break.

If you go the tendon then be sure to replace it every year including the bolts, as the tendon can crack and you never see it.

Personally I use the two bolt cup with a boge joint, very rarely breaks. I've had the pins break off but every time only one pin breaks so everything is together and you only discover it de-rigging.
The plastic cup doesn't break.
The only time I've broken one was when my base was loose and the constant bashing forward and backward in the mast track caused the rubber to fail catastrophically. This would happen on any base.



http://www.surfsailaustralia.com.au/showProduct/Windsurfing/Mast+Bases/394984/Surf+Sail+Australia+Quick+Release+2+Bolt+Rubber+Mast+Base

nebbian said...
Personally I use the two bolt cup with a boge joint, very rarely breaks. I've had the pins break off but every time only one pin breaks so everything is together and you only discover it de-rigging.
The plastic cup doesn't break.

Same here, I have only ever used the twin pin and they have never failed! Been using them for over 10 years in surf and doing lots of jumps and punishing the crap out of them. I too have had one of the nibs break off but only ever realised when I de-rigged. Easy enough to get a replacement spring clip for < $10 but you will get a few years out of each one. Also the plastic cup does tend to get loose over time, but never had one break on me ever...my old spare one has a lot of play in it from wear, but it just refuses to break!

Either way stick with Chinook, tried and proven and extremely durable IMO!

Europin forever! Especially if you plan on using RDM.

And I think tendon (straight rubber) rather than Boge (the hourglass shaped one) as the tendon failsafe is a bit of downhaul rope, which is surely a damn sight stronger than the nylon strap on a Boge joint

I researched this a bit before buying gear and some people have said that the euro-pin system can sometimes jam up with sand.
I opted for the US cup but I have found it a bit fiddly to get undone especially if in the water. Other sailors I observe seem to get their euro-pins undone much easier.
The biggest issue however is that I discovered the minimum setting on a Chinook skinny US cup extension is 10 CM, this has caused a problem getting certain sails to fit certain masts.

Cup instead of pin will never purchase pin type again in my life (had them come apart)

NOTE FOR THE CUP TYPE The female part of the extension is prone to bending out of shape and that's why they become difficult to introduce..

Cup, tendon, Chinook. I have seen 2 x Euro pins shear off level with the base.

ikw777 said...

Cup, tendon, Chinook. I have seen 2 x Euro pins shear off level with the base.

i thought there from 1 piece of steal
or are the bolted or welded to the plate ?

i have noitce there are alot more pin for sail 2ndhand

ikw777 said...

Cup, tendon, Chinook. I have seen 2 x Euro pins shear off level with the base.

That is normal ones there the pin is bolted to the cup bit that the tendon goes in.
On Chinook, the pin and top cup are machined from one piece of billet. Thus the recommendations of Chinook euro-pin over othe rbrands.

Mobydisc said...

d1 said...

Europin forever! Especially if you plan on using RDM.

Why is that? I use a Chinook RDM extension with the twin pin and cup and it works fine.

Try zero extension with your setup.

Windxtasy said...

To those of you who like the cup style, how do you get the bolts undone without having to find a stick or screwdriver to depress the bolts? I can never do it with just my fingers.
Chinook europin for me.

Fingers.

Have you ever seen a cup mast extension been bent ?
or crack cup

Every one saying the pin can sheer off . But can you repair the cup

I can see that you can buy replacement pin .


But really worried if it sheer off and the mast hit my foot or worst , my board

^^^Your putting too much thought into it, They will both do the same job. Just remember this is the most worked part of your kit with rubber bending millions of times and metal grinding on metal. People hang onto these things way too long 5-10 years later I'm sure is past its life span....And they wounder why they break. Both have weak spots, The pin on the Euro and there is nothing more then a bolt attaching the Us cup to the boge. I have read that the boge offers a bit more shock absorbtion then the tendon but with the US cup you can't get zero on your extension.

.....Just get the best one you can based on available coin. Unless you're going to be sailing Hookipa or Margaret river everyday I would not be too concerned.

The boge unmasked, I'm sure it has just as much chance of breaking as the euro-pin?



Just to throw a spanner in the works, Made by chinook and no boge or tendon...Must be the best universal in the world?

Windxtasy said...

To those of you who like the cup style, how do you get the bolts undone without having to find a stick or screwdriver to depress the bolts? I can never do it with just my fingers.
Chinook europin for me.

Fingers for me too.

jh2703 said...
Just to throw a spanner in the works, Made by chinook and no boge or tendon...Must be the best universal in the world?

As Aus301 pointed out, this is not the first 2-axis UJ out there. They were popular in the early 1990's and were sold as "race UJ's", because their profile was lower than the tendon-based units, thus enabling the "gap to be closed" even tighter. I had a similar US-cup-based one, but I think it was F2-branded. It had a number of problems. Unlike tendon-based units, it offers no resistance, so it enabled the boom and mast to strike the board much harder, leading to a lot of destruction. Also, the backlash of the mechanical joint combined with the play of the US-cup made it really sloppy and unpleasant to sail. On top of that, just as Aus301 said, it suffered from unpredictable stickiness due to partial "gimbal lock", because it relies on rotation to align the axes in certain cases.

I'd also like to qualify exactly why I support Europin over US-cup - Europin wears down a lot less and has less play as a result, it allows for zero extension on RDM, it is easier to attach and detach, and it is mechanically much more elegant. I've been using the solid Chinook unit for the last season (thanks to Mark's recommendation on another thread), but only used NeilPryde Europins before. Those usually failed when replacing the tendon (plastic threads stripped), but never at the pin, and never on the water. Must say, I've been steadily losing all my Pryde...