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pic: FRC488 - Six Wheel Drive Chassis
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Re: pic: FRC488 - Six Wheel Drive Chassis
A couple of questions:
Does that have any rocker in it? And is that 25 or 35 chain? |
Re: pic: FRC488 - Six Wheel Drive Chassis
Why omniwheels on a 6WD?
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Re: pic: FRC488 - Six Wheel Drive Chassis
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Re: pic: FRC488 - Six Wheel Drive Chassis
If the bumpers are back and the design is like 2006, then the next step is to add mounting to this frame that would allow the bumpers to be a structural element. If the rules allow forget home center plywood. Baltic birch "wood" be a good choice.
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Re: pic: FRC488 - Six Wheel Drive Chassis
Not necessarily more maneuverable, But I bet it is nice to have the 'bot spin around it's center set of wheels instead of whichever four happen to be touching the ground :rolleyes:
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Re: pic: FRC488 - Six Wheel Drive Chassis
Wow, looks light! Do you have an estimated weight for the entire drive base?
And on the subject of omniwheels: It looks like with the setup you have it would be very easy to swap them for traction wheels if they are needed. I guess that would be decided in testing. |
Re: pic: FRC488 - Six Wheel Drive Chassis
Can you explain why you chose not to have a cross brace? I'm not a mech-e but I would guess you need one.
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Re: pic: FRC488 - Six Wheel Drive Chassis
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The omniwheels are riding on 5/8" keyed shaft, while the AndyMark performance wheel is broached for a 1/2" hex shaft. It'd be relatively easy to change out a set of omniwheels for a set of traction wheels with a little bit of forethought. Namely, I'd need to make some shafts that are 5/8" diameter with keyway on one end and 1/2" hex on the other. Quote:
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Re: pic: FRC488 - Six Wheel Drive Chassis
I noticed that the front and rear c channels are notched for the drive rails on top and bottom. This could be a weak point. Shouldn't the drive rails fit inside the c channel leaving the channel uncut ?
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Re: pic: FRC488 - Six Wheel Drive Chassis
M -
Looks quite nice, and you have obviously put a lot of work and thought into the design. The efforts to minimize the total weight are obvious. The biggest concern you may have is strength in the event of an impact or collision. You might consider making the frame members out of rectangular tube instead of channel. Given the amount of material you are removing, the additional weight from the fourth side of the tube will be minimal, but there will a considerable increase in stiffness of the frame assembly. Just out of curiosity, what is the spacing between the wheel sets? Is it sufficient to cross a 20-inch wide, 16-inch deep, water-filled moat, should that capability ever be necessary? -dave |
Re: pic: FRC488 - Six Wheel Drive Chassis
Oh goodness.
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Re: pic: FRC488 - Six Wheel Drive Chassis
Here we go again...
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Re: pic: FRC488 - Six Wheel Drive Chassis
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Re: pic: FRC488 - Six Wheel Drive Chassis
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Any crocs? CRIKEY! |
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