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Unread 27-11-2012, 09:58
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Re: #25 Chain Drive Experience ???

Quote:
Originally Posted by Flak-Bait View Post
Sorry about that, missed the aluminum part of your post. It looks like many of the #25 sprockets on AndyMark are aluminum. Are they not chamfered, or the wrong size, or something?
Yes, AM changed their #25s at some point. They're now thinner and no longer chamfered, and we're having systematic issues with CNC notch defects. There was a bunch of talk earlier this month about it, but it was never resolved into a different supplier. We're currently looking either at fixing the bolt pattern and bore on the less expensive RobotShop ones or crossing our fingers and trying to lathe a chamfer on AM's thinner ones. Wondering if anyone found a different solution.


Quote:
Originally Posted by R.C. View Post
AM is the only person in the market that sells sprockets in #25 in aluminum. Maybe some other supplier might, WCP will in the distant future
Quote:
Originally Posted by philso View Post
My concern with exchanging the sprockets is that it would just be a waste of time. Since both sprockets had the same "notch" in them, this is indicative of the design or the CNC programming of the sprocket so any replacements would also likely have the same flaw.
Quote:
Originally Posted by R.C. View Post
AM used to sell thicker sprockets with a chamfer. Now they are thinner with no chamfer.
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