Chief Delphi - Wave Robotics 2826 Drive Teaser

Today 10:17 AM

EricLeifermann

With that low of a ground clearance I take it you're not going over the barrier this year?

Today 10:18 AM

EricH

Quote:

Originally Posted by EricLeifermann With that low of a ground clearance I take it you're not going over the barrier this year?

I think they are. That's a Delrin angle on the near end, or I'm greatly mistaken.

Today 10:22 AM

jwfoss

The sheetmetal parts are looking great this year guys. Looking forward to seeing the completed robot. I'm interested to see exactly how you are powering the wheels as it appears to be dead axles (3/8" Grade 8 Bolts) but I don't see any pulleys or sprockets.

Looks like about an 1" of ground clearance. And I believe those slides on the front edge of the chassis (im guessing teflon, Delrin, or HDPE) allow them to go over the barrier, FRC2168 is doing something similar this year.

Today 10:22 AM

Peter Matteson

What size are the wheels? I don't really have a good perspective to tell if they are 4" or 6".

Today 10:23 AM

SuperNerd256

Quote:

Originally Posted by EricH I think they are. That's a Delrin angle on the near end, or I'm greatly mistaken.

Excuse my curiosity, but what's a Delrin Angle? I'm assuming it's the slanted piece to go over the bump, but then again, you never know. Well, you probably know, but I don't.

Thanks!

Today 10:25 AM

EricH

Quote:

Originally Posted by SuperNerd256 Excuse my curiosity, but what's a Delrin Angle? I'm assuming it's the slanted piece to go over the bump, but then again, you never know. Well, you probably know, but I don't. Thanks!

The angled part of the frame appears to be covered by Delrin, which is a rather slick type of plastic. The other option that I can think of, HDPE, is also somewhat slick, but Delrin is slicker. In block form, Delrin has been used as a chain tensioner in the past--stick the block in so the chain is slightly too tight and let it find its own tension by digging into the block.

Today 10:28 AM

SuperNerd256

Quote:

Originally Posted by EricH The angled part of the frame appears to be covered by Delrin, which is a rather slick type of plastic. The other option that I can think of, HDPE, is also somewhat slick, but Delrin is slicker. In block form, Delrin has been used as a chain tensioner in the past--stick the block in so the chain is slightly too tight and let it find its own tension by digging into the block.

Thanks! I appreciate it!

Today 10:28 AM

Akash Rastogi

Quote:

Originally Posted by SuperNerd256 Excuse my curiosity, but what's a Delrin Angle? I'm assuming it's the slanted piece to go over the bump, but then again, you never know. Well, you probably know, but I don't. Thanks!

Delrin is a material developed by DuPont and is widely used by teams. That piece could also be HDPE or UHMW.

Today 10:34 AM

thefro526

Quote:

Originally Posted by jwfoss I'm interested to see exactly how you are powering the wheels as it appears to be dead axles (3/8" Grade 8 Bolts) but I don't see any pulleys or sprockets.

If you zoom into the picture, it looks as if the wheels are riding on hex shafts, if so, I'd imagine that the ends of the shafts have been drilled and tapped to allow the use of bolts as retainers.

Today 02:00 PM

AlecMataloni

That sheet metal work is absolutely gorgeous. Looking great so far! How high will your bumpers be?

Today 02:07 PM

Peter Matteson

Quote:

Originally Posted by Akash Rastogi Delrin is a material developed by DuPont and is widely used by teams. That piece could also be HDPE or UHMW.

FYI
Delrin is the Dupont trade name for Acetal.

Today 02:45 PM

waialua359

That robot is definitely going over the bump.

Today 03:56 PM

mdiradoorian

I only have one question what is the angle of the thing in the front?

Today 06:16 PM

mr.roboto2826

Quote:

Originally Posted by jwfoss The sheetmetal parts are looking great this year guys. Looking forward to seeing the completed robot. I'm interested to see exactly how you are powering the wheels as it appears to be dead axles (3/8" Grade 8 Bolts) but I don't see any pulleys or sprockets. Looks like about an 1" of ground clearance. And I believe those slides on the front edge of the chassis (im guessing teflon, Delrin, or HDPE) allow them to go over the barrier, FRC2168 is doing something similar this year.

We are powering the wheels Via belt and pulley, similar to a west coast in some respects. It runs inside of the 2 C channels that make up one side of our drivetrain. The wheels are our custom 4".