>My winter tents and my summer tents both have carbon fibre >poles. Used properly they work great, even in very severe >storms.
Yes, but as far as I have seen you sleeve all of your poles into the tent body which is much different than having an exposed single pole attached only to the peak of the shelter. Also, your tents don't rely on bent CF in rounded corners as many dome tents do. I would think your design would maximize the properties of CF while minimizing the risk of breakage. I just don't see this translating well into an unsleeved single pole pyramid situation.
>Actually, repair of a snapped CF pole can be much easier >to do than repair of a bent Al pole. You can sleeve a >snapped CF pole very easily; you can't sleeve a bent Al >pole due to the flattening out. Been there, done both.
No argument there, but what I was referring to as far as failure is that the failure of CF is catastrophic and instantaneous, whereas with Al, it is that long tail of ductility which allows for deformation without breakage. I have had a couple of situations with dome tents in the White Mountains of Hew Hampshire where severe winds bent Al poles, but I could see the failure begin and add guys to mitigate the damage. With CF, it would have given no warning and failed straightaway. I would submit that the failure mode of CF does not lend itself well to winter storms where shelter collapse without warning can be such an issue...not that any failure is good in that situation, but I just see Al as more predictable.
That said, I certainly recognize your expertise, Roger, being a tentmaker and one who has made his OWN CF poles. And maybe it is your correct use of the material that has given you such good success. Many others on this site have struggled with CF...see this thread specifically about Fibraplex: