Chief Delphi - The Spring

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- Kit & Additional Hardware (http://www.chiefdelphi.com/forums/forumdisplay.php?f=55)

- - The Spring (http://www.chiefdelphi.com/forums/showthread.php?t=153835)

Quote:

Originally Posted by Dale (Post 1634994)

Andymark has them in stock now.http://www.andymark.com/Spring-p/am-3557.htm

Quote:

Originally Posted by Bkeeneykid (Post 1635006)

Does anyone know if these are sourced from McMaster or somewhere else? It seems springs with supposedly same specs are significantly different. Being AndyMark, they'll probably be the ones on the AM fields for districts, so hopefully it's the same source as FIRST.

Quote:

Originally Posted by ollien (Post 1635015)

I'm sure that's simply to play CYA if the springs end up being different.

We have about 300 of these "similar" springs. We have one of the McMaster springs. This spring is stiffer. The od (7/8") and the wire diameter (0.135") are both the same as the McMaster spring, but the spring rate is higher. We had these made in Logansport at Myers Spring. It's not a standard part for them, but they can make more.

The reason why we started listing this spring is for international sales. International FIRST teams have a difficult time purchasing from McMaster, from what I hear.

As for "AM fields for Districts", this is definitely not the spring. The field-specific items for Steamworks comes from FIRST, not AndyMark. Both the Districts and Regionals receive approximately the same Steamworks items.

I will set up a display much like what ahartnet did in a previous post to show the difference.

Sincerely,
Andy B.

Quote:

Originally Posted by Andy Baker (Post 1635048)

International FIRST teams have a difficult time purchasing from McMaster, from what I hear.

QFT. Maybe FIRST can remember that for field pieces next year.

Here are pics showing an AndyMark spring with a gear and a McMaster spring with a gear.

The McMaster spring deflects 1/2" more than the AndyMark spring, under the same load of a 10 tooth plastic gear.

Sincerely,
Andy B.

Quote:

Originally Posted by Andy Baker (Post 1635116)

Here are pics showing an AndyMark spring with a gear and a McMaster spring with a gear.

The McMaster spring deflects 1/2" more than the AndyMark spring, under the same load of a 10 tooth plastic gear.

Sincerely,
Andy B.

Interesting that your McMaster Spring seems to deflect more than Ahartnet's does. One manufacturer listed a 10% tolerance on the spring rate, is it possible (probable?) that all of these springs are within tolerance and we could see a varying amount of stiffness at competition?

Is there reflective tape on the spring / peg?

Quote:

Originally Posted by Robosparks2926 (Post 1635163)

Is there reflective tape on the spring / peg?

The barb is black. There are reflective targets on the back board. The rules manual is your friend.

Quote:

Originally Posted by Robosparks2926 (Post 1635163)

Is there reflective tape on the spring / peg?

Check section 3.13 on page 37 of 126.

yes - there is 2" by 5" tape on each side of the peg. more dimensions for H&V placement in the game manual.

good luck..

Quote:

Originally Posted by JamesBrown (Post 1635132)

It is very probable.

It is also very probable that the spring rate will change as the regional / district event goes on.

I would state that teams should EXPECT the spring to be different (hopefully within reasonable tolerance).

We ordered ours at 3:36pm on January 9th, I just checked, and it's been shipped as of 5 minutes ago, expect tomorrow.

Quote:

Originally Posted by Cory (Post 1633185)

We bought springs within the hour after kickoff and got ours last week. I assume people who ordered later in the day/weekend are getting theirs now. If you didn't order until last week you're probably not getting one for awhile.

I ordered on Sunday morning after the kickoff. Latest from MC is that it ships "next week"

Just got ours in from MC today (January 24th, Tuesday)
Anyone in the Seattle area that needs one of these please contact me....I have some extras

Team 747 just received the spring today. we are only going to use 12". If anyone could use the rest just send and address and we will ship it out free of charge.

George

Quote:

Originally Posted by gwhalen (Post 1636116)

Team 747 just received the spring today. we are only going to use 12". If anyone could use the rest just send and address and we will ship it out free of charge.

George

Team 5547 could use the remainder of the spring. IT would be greatly appreciated!!

311 N. Washington
Hale, MI 48739

Again thank you
The Talons

Are you guys going to use all 24" of that spring? Team 3630 would really love to have 12" if you don't want all 24". DM me if you have any extra.

My question was answered on FIRST Q&A. There is a collar on the spring (and field drawings are being updated to show that, and all field springs are being sourced from McMaster ( https://frc-qa.firstinspires.org/qa/255)

Quote:

Originally Posted by aronsa (Post 1636812)

Are you guys going to use all 24" of that spring? Team 3630 would really love to have 12" if you don't want all 24". DM me if you have any extra.

You guys going to use all 12" of what you get? My team would love a spare quarter inch or two. Then we'll just need 47 more teams to agree and we can easily build our own Franken-spring.