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#1
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Re: pic: 4wd Geared WCD
One of the big ways to save weight, and what 25 does, is to take advantage of the massive idler gears to provide a massive speed reduction. If you put a tiny pinion on your CIM output and use the same giant gears for your wheels, that's a large reduction you no longer need to do inside your gearbox.
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#2
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Re: pic: 4wd Geared WCD
Thank you very much guys!
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We like speed. ![]() |
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#3
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Re: pic: 4wd Geared WCD
It's also possible that Inventor is giving you a weight for solid Alu CIMs. Try unenabling any COTS or premade parts, and letting it give you a weight for only the drive base. Then add in everything else. I've found that with that method, Inventor is never more than 1/8th of a lb off, even for our robot this year. Good Luck!
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#4
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Re: pic: 4wd Geared WCD
Looks good. Need to put some titanium on there, though
Just to nitpick, most people would call this an 8WD How are you planning on keeping the gears/wheels on there? You would probably want to extend shaft all the way through the 2x1 tubing in order to provide two points of support. |
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#5
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Re: pic: 4wd Geared WCD
Looks like an interesting concept. A Few Suggestions to look into, many said by other people already:
- move the gears to the inside of the frame - utilize the reduction provided by using those large gears, this may involve looking into using the standard Andymark shifting gearset with a custom final gear ratio. - have the electronics/base plate one piece, with cutouts for the trans - Add Bumper Mounts, check front clearence for bumpers, it looks like the wheels are infront of the chassis' leading edge. - consider alternate wheel sizes and types, there are many options out there (I'm currently in the colsons are great line of thought) Keep up the good work! |
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#6
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Re: pic: 4wd Geared WCD
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And yes, that is my daily, no, hourly mess up. It should be called 8wd. Snap rings do the trick for us. If I were to actually create this, I would definitely extend the shafts all the way through the tubing. Quote:
This is a point I wanted to do, but I am very unsure as to how to go about that. As you can tell, I am not great at Inventor, so creating a custom gearbox that will perfectly line up with the gears on the wheels is a few steps above my head. Maybe in the coming years. Believe it or not, they are one piece (they continue together on the frame). Once again, if I were to make this, I would just make the base-plate a cutout where the transmissions stick out. The wheels are in fact past the frame. I did this with respect to 2010's game, so I was going for ease of getting over the bump, even though they could be flush and still contact the bump before the frame. Once again, my beginner showing (this was from a while ago actually, January 4th to be exact). Check out some of my new stuff. I would love your input!: WCD Cheesy Poof Inspired with a twist |
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