2010 extension (Page 4 of 5)

Sorry chaps what I meant to say was that the hole distance should be approximately 14285714285.714285714285714285714 times the atomic radii of titanium (empirical derivation of course with a value of approximately 140pm.

Less of the bum please its just so common although I may be a bit of an arse

The cool thing with Jeff is that he spend LOTS of time testing the extensions in tough Maui conditions and let others do it too. Already over a year ago we had the ti version out in 1.5 mast and it went through some serious rinse cycles and probably have gone through many more since before production. ANd I think the Jeffs experience with variably quality on the old one is a driving force between the new carbon extnension too  - just look at that 3mm wall thickness tube.

My own best extension so far is a 45cm Liberty from 2001 which I still use a lot and a short first generation Kelapro which is a real work of art. But the new HSM carbon really has me intrigued.

The Kelapro in the end just to expensive to produce, they tell me. Think a PRODUCTION cost a bit above what the most expensive extensions cost at retail...

If we are to have a new skinny extension why not redesign the UJ cup / pin as well so there is no need for the tube to widen out if this is thought to be a waek point. Or has this already been do ?

This is a real question not arsing about today.

Ola, you thought the Liberty 45 was good? I think Jeff needs to hand over the testing to me then... The Liberty was good until the base looked like an egg... Yup, mine hasn't cracked even though the steel reinforcement inside the carbon tube has bent into an egg shaped form. btw, you can bring home one Ti for me too?

Mine is still round (or round:ish) but for sure it get egg shaped when you tension the downhaul so its a bit tricky to fit the cup. But in the big scheme of things, I'll rather take an extension that sometimes take the form of an egg than one that breaks like an egg. The main thing with the Liberty I have is that it has taken lots of abuse (big wave swimming at 40+ extension) and still holds up. I think it's just a really well made piece of tubing. A few extra layers of carbon around the bottom would take care of the egging, but I never got around to reinforce it (I did do that operation to an old alu nolimitz extension I have as a spare and it completely made the egging go away).

Contact med by email if you want me to bring home an extension.

It was in there, but you missed it...

The base was my buddies, actually a month or so out of warranty but with little use apparent upon inspection, he DID send it in asking for warranty coverage and Chinook DID honor his request.

Not as good as never breaking, but worthy of merit and keeping Chinook on the short list of parts worth having...

Wow, this thread went nuts last week! Sorry I was a little unavailable.
A lot of good input. 2cm spread. I do not think the 2cm would be much weaker. I just like the every other spread of 5cm better.
316 stainless and Alu are not too bad. Also the only place they touch is where the axel treads into the cast part. The area on the outer edge is lined with Nylon shim so no electric touch is happening there. I will suggest rinsing in fresh water after using when possible.
The only reason the base is "wide" at the bottom is that it was designed for US cup first. Euro opin has come a LONG way in the last 5 years (mostly due to Chinook), but I simply do not trust it as much as the bulky US cup. I have swum after my board using Pin system way more than US cup and I probably have 100/1 days on the US system. That is not a comfortable ratio. I DO think the sand on Maui is particularly hard on Euro pin systems.

Hi christo,

"attach my rig to the board before downhauling" never seen this..

greetings uwe

I work at the rentals at HiTech in Maui and we use those Streamlined alu extensions Christo linked. They are holding up quite well. Sand does get inside, once in a while you need to shake it off.
Way too heavy for my taste, though.

I also have a Liberty extension which I don't use very often, but so far so good. My favorite extension is an old "unreliable wall thickness" HSM carbon that broke on a high setting. I cut it down and now I use it at 15cm for my 4.7. Even though I know one day it will break (what doesn't?), I've been using it for years now and I love the weight (or lack of there of) of it.
It gives me a special pleasure to know that I'm the one with the lightest extension in Maui...

I weighted some. HSM Carbon cup 30cm - 350g. Chinook carbon cup 38cm - 470g. Chinook bases cup/pin both 380g. Quick release system cup 470g. Chinook alu 38cm cup/pin 600/690g. So US CUP is at least 100g lighter.