What speed is your Boulder launching at

[Ginger Power]

We're somewhere in the range of ludicrous speed to bench grinder.

[Tom Line]

Originally Posted by Ginger Power

We're somewhere in the range of ludicrous speed to bench grinder.

Hrm. I suppose putting it in terms of bench grinders would be more appropriate. I hadn't thought of that.

2.1 bench grinders. (Spell correct just tried to change grinders to gingers. Silly spellcheck. Gingers aren't a measure of speed).

[hectorcastillo]

We launch ours at 88mph during qualification rounds so that they'll move forward in time and all get scored simultaneously in the finals.

[MechMentor]

If we shot the boulder through a Chronograph it would be around "Do we really need this much speed and force?" feet per second. It's enough to help a five-ounce bird carry a one pound coconut.

[IndySam]

enough

[BoilerMentor]

Well, the surface speeds on our sets of shooter wheels are 100 and 130 fps at maximum motor output. We generally run it between 60% and 70%. I know we've got a lot of slip. So, the answer is just really, really fast.

[JesseK]

It's a fast enough RPM that the difference between VEX hex bearings and VEX ThunderHex bearings may be necessary to investigate.

[Conor Ryan]

Sounds like we are pretty far away from the Aim High 12fps speed limit.

[JohnFogarty]

You know those gravitational waves you keep hearing about recently? Those weren't created by colliding black holes, they were created by our boulders colliding with the opposing alliance's tower.

[Type]

Im not really sure what ours is running at. It was decent speed when we had mini cims geared 1:1 with 3" of compression, but we put SpinBoxes on the mini cims so its geared 1:1.67 now. The wheels are spinning at roughly 10,000 RPM. We are still working on the final arm/ shooter assembly so we don't even know how well this will work compared 1:1.

[Nathan Streeter]

Originally Posted by Conor Ryan

Sounds like we are pretty far away from the Aim High 12fps speed limit.

Worst rule ever...

[BetaHelix]

Ours shoots fast enough to take out exit signs and castles at range

[I_AM_Clayton]

Here´s a video of our shooter, its faster than it looks!
https://youtu.be/5XZUleXc4XM

[Taylor]

Originally Posted by I_AM_Clayton

Here´s a video of our shooter, its faster than it looks!
https://youtu.be/5XZUleXc4XM

We've found the winner!
At events around the world, pit scouts will ask pit crews "how fast is your shooter" and the correct response is "faster than it looks."

[Alpha Beta]

Looking forward to the design where "low bar capable" + "high exit velocity" != "blockable". Is the flattest parabola really the best parabola?