Has anyone discussed the reason for friction fit over a threaded fit on the vapcap? It just makes more sense but I'm sure the engineering of a friction fit is better? Any thoughts? It just seems like this would be more durable and less maintenance, eliminating o-rings at first thought. #duravap!
I've had the same question and then I've asked George from Dynavap about it .
Here his responce " The tips are held in place with the orings in a friction manner. Threads are more complex to assemble and can be crossed and damaged. "
At that time I was not able to comprehend fully his answer.
But by now ,after gaining some experience with filing,grinding,cutting and machining titanium
I can understand fully what he meant back then.
Titanium is maybe one the worst metals for threading ( like aluminium is ,in the same manner).
Two threaded parts made of Titanium ,they will soon lose their ability to be
joined and stay tight together.
Titanium is really prone to
galling and threads on titanium won't last long enough,
especially if the other threaded part is also made from Titanium.
If in case of crossing /misaligning the threads ,the two parts are good enough for the garbage then.
More than that, the heat conductance is also an issue of course ,as was well stated from
@ClearBlueLou .
Cheers.
