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Unread 16-10-2015, 18:41
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AKA: Shashank Rajesh
FRC #3641 (The Flying Toasters)
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Re: Dog Shifting Gearbox Feedback

Quote:
Originally Posted by Joe G. View Post
Looking at the 3d model closely, it looks like the lower mount hole on your CIMs is partially blocked by the large dog gear. Easy enough to solve by rotating the CIMs a bit so that these holes move outwards.

Additionally, it's hard to tell, but you may not have left enough room on either side of the sprocket for the actual chain to comfortably exist without rubbing on things. I'd double check this before producing it, it looks awfully tight to me, especially for #35 chain.

Not so much a design flaw as something to be aware of, but it looks like some of your standoff holes are going to be inline with your frame if this is mounted to a conventional 2x1 box chassis. Make sure to add clearance holes for these, or even better, use them to provide extra mounting support.
Yeah I found out about the blocking of the holes 1/2 of the way while designing. Correct me if i'm wrong, but dog gears are supposed to be able to pop put of their bearings manually and moved inwards right?

I also found that out with the first iteration of the design, so I had to edit the plates so that the standoffs go in between the loop of chain. They're not in the way anymore, but its fine if they rest in between the loop of chain right? Whatever the case, I agree with you, I should've left more room for the chain; I'll work on that.

And yeah I plan to cut out clearances on the chassis to make room for the bolt heads, or use them for mounting if required like you said.

Last edited by SerpentEagle : 16-10-2015 at 18:43.