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#1
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Team 1625 8 Wheel Drive Prototype
![]() ![]() ![]() This is the 8 wheel prototype team 1625 has been working on for the past few weeks. One wheel is driven straight off of the gearbox, and chains run from the sprockets on that axle to the other wheel assemblies on that side, as pictured above. The wheel assemblies are half inch steel axles with two 21 tooth sprockets welded to them and a 3" colson pressed on the end. They slide through two bearings in the frame tube and have a snap ring on the back side. The chains are currently just tensioned by the proper center to center distance, but on the next iteration we plan to use bigger wheels to allow for ground clearance with idler sprocket tensioners. There is also an extended section of the gearbox shaft to allow for easy encoder mounting. Specifications: 3/16" Center Wheel Drop 13.5 Feet Per Second Calculated Speed Single Speed Gearbox 41 Pounds With Electronics 3" by 7/8" Colson Wheels |
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#2
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Re: Team 1625 8 Wheel Drive Prototype
I like it! Simple and clean looking! Those 3 inch colsons look awesome pressed on with the gears!
-Dave |
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#3
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Re: Team 1625 8 Wheel Drive Prototype
Elegant. I imagine it handles well.
How did you cross-brace the frame? |
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#4
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Re: Team 1625 8 Wheel Drive Prototype
Those chains look too close to the ground for comfort. But cool bot anyway!
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#5
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Re: Team 1625 8 Wheel Drive Prototype
Quote:
I love those gearboxes. |
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#6
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Re: Team 1625 8 Wheel Drive Prototype
I really like what you guys did with the one piece axle/colson hub/sprocket. How much does the entire shaft assembly weigh without the wheel?
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#7
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Re: Team 1625 8 Wheel Drive Prototype
Very nice.
What is the final ratio to the wheels? (nvmd somehow missed your little follow up underneath the pictures) I cant quite tell from the picture, #25 or #35 chain? Follow up question- tensioning? Looks slick! -Brando Last edited by Brandon Holley : 12-21-2011 at 10:05 AM. |
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#8
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Re: Team 1625 8 Wheel Drive Prototype
Quote:
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#9
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Re: Team 1625 8 Wheel Drive Prototype
It's obviously the two pieces of plywood that are zip tied on.
![]() Last edited by Dillon Carey : 12-21-2011 at 05:24 PM. |
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#10
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Re: Team 1625 8 Wheel Drive Prototype
Quote:
As for tensioning, Quote:
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#11
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Re: Team 1625 8 Wheel Drive Prototype
That wiring sure is a thing of beauty.... lololololol
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#12
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Re: Team 1625 8 Wheel Drive Prototype
It looks like it would be a bit of a pain to service, with all the wires going in and out of holes and tubes and things. It looks nice, but it seems like too much trouble for not enough gain.
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#13
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Re: Team 1625 8 Wheel Drive Prototype
on the contrary my dear friend, you have yet to see the bottom, plus I had labeled them all ect. ect. it was a very meticulous process... PLUS do it right the first time... you won't have to service it
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#14
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Re: Team 1625 8 Wheel Drive Prototype
Quote:
Quote:
Thank you! We used #25 chain, and it seems to work out well. The middle chain runs are a little bit less tensioned than we would like, but we plan on fixing that when we add the bigger wheels. Even though it is a little bit loose it still has never fallen off. |
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#15
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Re: Team 1625 8 Wheel Drive Prototype
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Last edited by Cory : 12-27-2011 at 01:43 PM. Reason: deleted quoted spam image |
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