Recent content by mhalc

The 5gm mass remains in contact with a spring tube that encloses the conical spring I will not be able to use viscous oil as this would contaminate other components in the assembled product

Thank you for your reply. I have already posted the prototype spring test data in an earlier post I have not been able to find any company that is able to measure the time that the conical spring takes to open from its solid height to its free length.

Yes and Yes

Thank you

We have made 20 prototypes See attached spec sheet from the manufacturer of the 20 prototypes Does this help you?

The mass of the spring is estimated at 0.169 gms

Thank you for your help

Thank you for your reply and the links provided. The extension time of the conical spring is critical to the application that the spring is working in. The conical spring's large OD sits in a spring tube. When the spring is released the spring enables the spring tube to rotate and move a 5 gm...

I am really sorry but I put the decimal place incorrectly in my first post. Should be 0.02 seconds = 20 milliseconds

Anything that is greater than 200ms would work.

I require a small conical spring to open from its compressed pancake height of its wire diameter to a free length of 11mm > 0.2 seconds (20 milliseconds) The large end outer diameter = 7.80mm. The small end inner diameter must be greater than or equal to 2.75mm. The conical's spring's will be...

Chet May 2014 you contributed to a post called "How fast coil springs are " I have a similar problem, I am trying to determine the coil speed of a conical telescopic spring from a fully compressed height = spring wire dia to its free length Can you help me and what data would you need from me...