Lift Peg (Spring) Source?

[SenorZ]

I called. They guy said, "Is this for a robot project? Yeah, we're not going to be able to get them for at least a week." [Los Angeles area center in Santa Fe Springs]

[BenDSterling]

I just spoke with McMaster [Atlanta Distribution Center] and they guy on the phone said that this spring is currently the most popular item on their site right now (haha go FIRST). He also said that the majority of the phone calls he has answered today have been asking for this spring. He was genuinely confused on why this spring was so popular.

He said that, if anything, it will probably be longer than expected. So we might be out of luck.

[dkavanagh]

When I checked on Saturday, it was a 1 week wait and we placed an order. I'll let you know if that happens. We'll use a dowel till then.

[dtengineering]

Century Spring product number C-333 is very similar in diameter (O.D. And wire) and just happens to be 9" long. You'd still have to cut the ends off, but there should be a tonne of these around.

https://www.amazon.ca/Century-Spring.../dp/B000BD6BUE

And I warned the woman I spoke to at Essentra Components to expect a surge of orders. FIRST can have that effect...

Jason

[RoboTigers1796]

Originally Posted by dtengineering

Century Spring product number C-333 is very similar in diameter (O.D. And wire) and just happens to be 9" long. You'd still have to cut the ends off, but there should be a tonne of these around.

https://www.amazon.ca/Century-Spring.../dp/B000BD6BUE

And I warned the woman I spoke to at Essentra Components to expect a surge of orders. FIRST can have that effect...

Jason

Thanks! I just grabbed one until the mcmaster one shows up. (american link for the lazy -https://www.amazon.com/CENTURY-SPRING-C-333-Extension-Spring/dp/B000BD6BUE)

[sanddrag]

Century Spring 5518 looks like it may be usable. Anyone agree or disagree?

[JamesBrown]

Originally Posted by sanddrag

Century Spring 5518 looks like it may be usable. Anyone agree or disagree?

Century Spring E-41


I think you want Century Spring E-41, the rate constant matches on that one.

Disclaimer, I am an EE, and I know nothing about springs.

Originally Posted by dtengineering

And I warned the woman I spoke to at Essentra Components to expect a surge of orders. FIRST can have that effect...

Jason

Current lead time from Essentra is 8 Days

[mobius911]

Originally Posted by sanddrag

Century Spring 5518 looks like it may be usable. Anyone agree or disagree?

I ordered one of these over the weekend when the McMaster supply looked questionable. Received it a couple days ago. Actual spring length, minus hooks on ends, is only 8". Other than that it's fine (although I don't know the actual spring rate, the size of the wire and the OD are identical to the "spec" spring).

[Big Ideas]

Originally Posted by dtengineering

Century Spring product number C-333 is very similar in diameter (O.D. And wire) and just happens to be 9" long. You'd still have to cut the ends off, but there should be a tonne of these around.

https://www.amazon.ca/Century-Spring.../dp/B000BD6BUE

And I warned the woman I spoke to at Essentra Components to expect a surge of orders. FIRST can have that effect...

Jason

CHECK YOUR SPECS.
A 9" long extension spring is 9" from loop inside to loop inside. So the length after cutting odd the loops will be closer to 7". Also some one should see if there are springs to the OD and WD that are 2x longer that can be cut down.

I hope FIRST is monitoring this thread and getting the idea that they might have spoken with MMC before kickoff, to warn them of the response.

[chrisrin]

Work from my friend at Myers is the springs are 9" long - they probably cut the 36" McM one into four 9" springs. I suspect a bolt is mounted from the back that is the same diameter as the interior diameter of the spring, and the spring is somehow mounted to the bolt on the front, but I could be wrong.

[EricWilliams]

We actually received our spec spring yesterday. I'm not sure if this was just because we were one of the first to order, pure luck, or a sign that McMaster might have pulled some magic strings and got additional inventory in.

We have not cut our spring to length yet, but did manage to get a piece of 3/4" SCH 40 PVC pipe jammed into one end in such a way that we're going to have to invent a clever way to remove it.

I'm offering to do limited testing with the limited resources we do have, assuming we can restore the spring to it's original un-PVC'ed state.

[JoeRames]

Ordered ours from here. Few days. http://www.midlandhardware.com/639807.html

[JoeRames]

Sorry for this suggesting. This place said they had inventory, but then didn't reply to emails and phone calls. Finally got through and they said they were on backorder. Cancelled order.

[Moonsault]

Does anyone know if we can use a magnet to help put the gear on the peg?

[CCVirginia]

This is 612 - Chantilly, VA.
Identified this as a near alternative:
http://www.centuryspring.com/extension-spring-5518.html
Must order at least 5.
Cost for 5 with shipping would be $79.80.
Any interest in a group order?