Here http://share.ovi.com/media/currentre...resident.10261 is a photo of universal chainrings bolted together to increase stiffness. These are pro neck and tuff neck chainrings with 110mm and 130mm patterns they are not really compatible with the 9 cog chain shown. I believe universal chainrings with 130mm shimano and 135mm campagnolo are also available under a different brand and I believe I have also seen 135mm campagnolo and 144mm campagnolo patterns but these were made for track bikes. This works and reduces the deflection of the large ring to about one half. I've run these with a missing bolt on the spider without any ill effects. Weight wenies can replace their steel bolts with aluminum bolts.