pic: 3280 Tape Measure Hanging Mechanism

[Coach Seb]

How do you drive the tape upward? do you some type of rollers?

[gryphon97]

Originally Posted by JamesBrown

Yeah, that's the one.

I will see if I can find some pictures of the hook tomorrow.

Have you been able to find the additional pictures?

Any other details can you give us?

Thanks.

[TD78]

Hey guys. This team is no longer in existence. Miki Oliver was the lead mentor/coach for 3280. He is on a rookie team now in RI...but he doesn't come on CD. James Brown is probably the only person I know that I believe saw the device in action back 2010...he might still have pictures.

[Adventuregirl]

For the FTC Res-Q, on my home-school team, our idea was extremely similar. We used a thicker, stronger measuring tape and screwed it onto drawer sliders made of steel and it extended more than 5 feet in length. The measuring tape hanging mechanism is a great idea.

[Cam877]

How is the hook attached to the end of the tape measure?

[Mikyway]

The tape idea seems really good if you're looking for a compact lifting mechanism, which we are. But our team was a rookie last year so we have no idea how to go about doing this. Are there any kits or parts that you need to get for this, and if not how would you go about making one?

[JohnFogarty]

How did you keep the tape measure from releasing once you had pulled your robot to the height you wanted it? Was it some kind of locking mechanism or was your spool on a worm-drive or non-backdrivable gearbox.

Could you post a picture of the other side of the gearbox?

[GeeTwo]

Originally Posted by Knufire

Thirded.

I haven't done one of these myself so I may be completely wrong, but this is what I understand between what I've read and in attempting a tape measure potentiometer last year:

Tape measure rules are flat sheets of (essentially always) steel. These sheets are rolled onto the axle inside the tape measure unit in a flat configuration where they bend quite easily, but are bent a few degrees (typically about 10 or 15) as they leave the tape measure through a curve molded into the case so as to provide stiffness against the tape buckling. Stanley Fat Max appears to be the best on the market at this function.

Tape measures are meant to be pulled, not pushed. The challenge then becomes one of driving the unrooling of the spool at the shaft end before the curvature is added, or driving the tape after it is curved without ruining that curvature (this should be easy for teams who can sculpt a wheel's profile on a lathe).

[s_forbes]

Originally Posted by GeeTwo

Tape measures are meant to be pulled, not pushed. The challenge then becomes one of driving the unrooling of the spool at the shaft end before the curvature is added, or driving the tape after it is curved without ruining that curvature (this should be easy for teams who can sculpt a wheel's profile on a lathe).

If you push fast enough, they don't seem to care.

https://www.youtube.com/watch?v=rNyMEM3njrM
http://www.youtube.com/watch?v=qJFQkBGCgaE&t=0m19s

This mechanism just ran a 1.625" rubber Banebots wheel against a tape measure. It was flat at the drive wheel, but had a long support that allowed the tape to curl back up.

[Codster3922]

Hey guys i was wondering if you guys have a CAD file for the tape measure kit. If u do plz msg me or comment back. Thanks.

[RoboAlum]

I know we are taking on the challenge of making a tape measure climber. We hope to post video and pictures soon we are prototyping with a few tape measure a dewalt 1-1/4", Milwaukee that is nylon coated and a Stanley max steel. We're using a vex 3 motor single reduction gearbox 84/12 and tiny colons from vex.We will share our findings