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Unread 07-01-2016, 10:08
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AKA: Jon Kelley
FRC #5511 (Cortechs Robotics)
Team Role: Mechanical
 
Join Date: Jul 2015
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Location: Apex, NC
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Re: pic: Tube-Based Hex Chassis

Quote:
Originally Posted by thedude019 View Post
What are the dimensions of the frame without the extra tubing?
The frame (corner to corner) is 28" long and 24" wide. I believe the hex tubes are 14.5" long so it fits snugly in the frame perimeter but probably does not maximize area.

Quote:
Originally Posted by Chris is me;
As for your belly pan, I would leave a bit of a web / perimeter around the inside of the chassis instead of starting the lightening pattern immediately after the tube "ends". Maybe it's just aesthetics, but I think it's a smidge stronger that way. I would also use more smaller cutouts rather than the big wide cutouts so that the belly pan is a fair bit stiffer.

You can probably get away with 16 wall tubing for all of the bumper supports, which is a lot stronger than lightened 1/8" wall tubing and lighter than most lightening patterns in 1/8".
The bellypan is nowhere near complete as I just added it to post to CD but it's my first time so I'll definitely revamp it to have more support material and smaller cutouts. The rail tubing is currently 1/16" but the supports are all 1/8", something I think I'll switch out.

Quote:
Originally Posted by Ty Tremblay;
If you want to go all in with a hexagonal frame perimeter, you could flip your corner wheels to the inside of your rails. This would let you spread your rails out further, increasing your wheelbase and giving you more room on top.
I just read through the entire thread and I really like the idea of moving the wheels in. My main concern is that there would be more scrubbing as the farthest wheels are a bit farther from the middle wheels, but it seems as it has the opposite effect (which is nice). I'll post a v2 later with the wheels on the inside.
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