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Unread 05-02-2017, 00:32
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Re: pic: Team 5624 Steamworks Robot Teaser

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Originally Posted by Chris is me View Post
There are four inch wheels touching the ground, and what appears to be less than a 2 inch gap between those wheels and the member above them spanning the length of the robot. The bumper can likely touch that frame member along its entire length, fully meeting the rule. I don't see the issue here?
If the bumper touches the frame member, it's fine. I didn't see that on the first go-round. (Of course, if for some reason it doesn't, it's an easy enough fix with some strategically placed aluminum.)
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Unread 05-02-2017, 00:53
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Re: pic: Team 5624 Steamworks Robot Teaser

Could be very wrong when saying this, but I really don't think you're going to get 11fps out of this. 3cims on a 50:14 and a 44:30 reduction comes out to be a 5.24:1 overall ratio for a theoretical of 17.76fps or 14.39fps adjusted. That gearing is very fast and you could be prone to brown outs. I would do some testing and adjust your drive speed accordingly.
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Unread 05-02-2017, 05:23
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Re: pic: Team 5624 Steamworks Robot Teaser

Quote:
Originally Posted by Cash4587 View Post
Could be very wrong when saying this, but I really don't think you're going to get 11fps out of this. 3cims on a 50:14 and a 44:30 reduction comes out to be a 5.24:1 overall ratio for a theoretical of 17.76fps or 14.39fps adjusted. That gearing is very fast and you could be prone to brown outs. I would do some testing and adjust your drive speed accordingly.
That seems like a decent speed for a 6-CIM drive on a field as open as this one, but I agree current sensing is wise.
If you really are geared for 11fps, consider going up to at least 15 or 16fps to take advantage of the extra acceleration of 6 CIMs.

Your robot looks very cool! Is that a wooden polycord pulley on the bottom?
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Unread 05-02-2017, 07:53
Jay Burnett Jay Burnett is offline
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Re: pic: Team 5624 Steamworks Robot Teaser

We are going to be assembling our drivetrain with Vex Omnis and Versahubs today and I am wondering if the hubs just press fit into the wheels or if we need a bolt to run through and clamp them in. Thanks and Nice looking robot!
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Unread 05-02-2017, 10:02
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Re: pic: Team 5624 Steamworks Robot Teaser

Quote:
Originally Posted by Jay Burnett View Post
We are going to be assembling our drivetrain with Vex Omnis and Versahubs today and I am wondering if the hubs just press fit into the wheels or if we need a bolt to run through and clamp them in. Thanks and Nice looking robot!
They press fit pretty securely into place. We actually had to use our Arbor press to assemble them. However, I'd put at least 3 bolts on for some extra security.
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Unread 05-02-2017, 10:42
007agentHP 007agentHP is offline
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Re: pic: Team 5624 Steamworks Robot Teaser

Quote:
Originally Posted by asid61 View Post
That seems like a decent speed for a 6-CIM drive on a field as open as this one, but I agree current sensing is wise.
If you really are geared for 11fps, consider going up to at least 15 or 16fps to take advantage of the extra acceleration of 6 CIMs.

Your robot looks very cool! Is that a wooden polycord pulley on the bottom?
At the bottom is a wooden polycord floor level ball intake. its only wooden because we are waiting on the real pieces to be milled, so we are just using the prototype pieces.

and on the gearing, check the post above for an explanation on what i forgot to mention about it.
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Unread 05-02-2017, 10:38
007agentHP 007agentHP is offline
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Re: pic: Team 5624 Steamworks Robot Teaser

Quote:
Originally Posted by Cash4587 View Post
Could be very wrong when saying this, but I really don't think you're going to get 11fps out of this. 3cims on a 50:14 and a 44:30 reduction comes out to be a 5.24:1 overall ratio for a theoretical of 17.76fps or 14.39fps adjusted. That gearing is very fast and you could be prone to brown outs. I would do some testing and adjust your drive speed accordingly.
i forgot to mention where we arrived at the 11 FPS number from. we prefer to run our motors up to approximately 87.5% of their max speed to maintain efficiency. so we would never reach the 13-14 FPS range, i apologize for the confusion and misinformation.
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FRC Team: 5624 TIger Tech
Rookie Year: 2015
Competition Playoffs Record:
Mount Olive 2016 Champs with 1257 and 1676
Bridgewater 2016 Champs with 1676 and 223
N. Brunswick 2015 Quarter-Finalist With 4573 and 4460
Off-season Playoffs Record:
Monty Madness 2015 Finalists with 303 and 1089
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