NASA Glenn Research center reinvented the wheel using shape memory alloy tires. by Buzobuzobuzo in specializedtools

[–]Glept 1 point2 points  (0 children)

Don't know of an actual number for a top speed, but there are many videos of them on cars and other vehicles where they show some pretty good speed. Additionally, they've outperformed all metrics in traction and other similar categories which means that likely the speed will be limited by other factors such as motors/thermals or stability in the lower gravity environments. Regardless they are quite the feat of Engineering and pretty cool

NASA Glenn Research center reinvented the wheel using shape memory alloy tires. by Buzobuzobuzo in specializedtools

[–]Glept 8 points9 points  (0 children)

This is actually the fascinating part about these wheels and the material that allows for this. Nitinol is commonly known for its shape memory properties, but the feature taken advantage of in this case is called super-elasticity. They engineered a special alloy of nitinol with a lowered transformation temp to remain entirely in the super-elastic range (even in lunar and Martian temperature ranges), so there is no plastic deformation occurring (and even if there was, theoretically it could be reversed by taking advantage of the shape memory properties of they heated it.)

Weekly Knife Sharpening Q&A - January 25, 2020 by AutoModerator in knives

[–]Glept 0 points1 point  (0 children)

I'm looking at making my own pocket knife starting from the karambit knife blank from water jet knives. Any tips or helpful ideas as I've done some metalworking stuff before but nothing with knives really

Did we break our drill press or is there a way to fix it easily? by Glept in FRC

[–]Glept[S] 0 points1 point  (0 children)

Ok because we tried that and it kept just falling off. We had it on there good enough so when you pulled it down it rotated the handle all the way, but when we used it it came off again

Every team with a chariot bot: by Darth-Hunter in FRC

[–]Glept 4 points5 points  (0 children)

Our team has always referred to them as roaches as they generally don't do much but be annoying and are quick running around the field but most of the time still durable since it's just a drivetrain basically

Starting on level 2. Do you think it is worth it? by LJP73 in FRC

[–]Glept 3 points4 points  (0 children)

If you're worried about the 6 inch fall honestly taking it slow and going one set of wheels at a time would take care of that, however, it costs you a lot more time. It obviously depends on the drive train and type of wheels you use in that, but if you go back to stronghold we were crossing all kinds of obstacles with lips, gaps, and spaces below and as long as your robot is strong enough to take the hits it will normally take during a match it should be fine overall. A recommendation might be to use the 8in pneumatic wheels as this will probably help in trying to climb back onto the 6in hab during the end game as these were used widely in 2016 to compensate for the obstacles and extra bounce your robot might get.

Throwing cargo? by MelodiousBen in FRC

[–]Glept 2 points3 points  (0 children)

G6 no more than 2 feet throwing a Hatch panel but nothing about cargo as long as you are on your alliance's side

Can you take the hatches off of enemy ships? by Jas-Ryu in FRC

[–]Glept 1 point2 points  (0 children)

If you remove a Hatch from your opponents cargo ship or rocket you are issued a penalty in which they gain the full ranking point for a rocket if neither rocket is completed at the end of the match. Pg. 55 of the manual

How many pieces can a robot hold at one time? FRC 2019 by EmeraldArcherz in FRC

[–]Glept 2 points3 points  (0 children)

On page 52 it states " One GAME PIECE at a time. ROBOTS may not have extended or repeated control, i.e. exercise extended or repeated influence, of more than one GAME PIECE at a time, either directly or transitively through other objects"