been done by a few people. yep, either countersink the holes, or run longer chainring outer bolts (yes, they exist.) don't overtighten, or you'll just crack whatever you use. i don't think i'd trust a homemade poly guard of less than 10mm thickness.adamantane said:thinking of dropping my big chainring for a bashguard..just don't use that much and it acts as a bashguard anyway
catalogs show these thiings are pretty expensive but appear to be fairly easy to cut from somehting
i don't have metal working tools so i'm wondering if anybody got a piece of thick polycarbonate and cut one out...then drilled some holes and mounted it up alright
wondering how thick it can be, since chainring bolts have a certain length....countersink the holes for these as well?
caveat: regular poly stuff available off the shelf won't last as long as the poly guards made for it. nearly every homemade poly guard i've seen has eventuallly cracked.
if you've no metal working tools, you're going to have a pretty [email protected] hard time cutting and drilling the poly stuff, too. unless you have access to tools to do so, buying the tools needed to do it with alu or poly will likely run you more than the cost of a half decent guard anyhow. or paying someone who has the stuff to do it.
at this point, just run your outer ring into ground as a basher. just bend it back/break off a few teeth every now and then.....