Thorn Cycles Forum

Technical => Transmission => Topic started by: silverdorking on September 16, 2016, 09:38:43 am

Title: Chain ring bolt removal
Post by: silverdorking on September 16, 2016, 09:38:43 am: In my attempt to go from a 48 to a 46T chain ring I am encountering problems with a recalcitrant ring nut despite having bought a 'park tool' ring nut tool to hold the nut! Are there any tips regarding removal? I think you can see from the picture I've made a pretty good job of widening the nut slots with a punch and hammer! Do you think I should drill it out? Thanks in anticipation!
Title: Re: Chain ring bolt removal
Post by: Dave Whittle Thorn Workshop on September 16, 2016, 10:42:56 am: If you can get someone to hold the tool on the nut whilst you undo the hex key bolt. It helps to stand the crank set up on a block of wood, we use an old bottom bracket axle in a vice.
Title: Re: Chain ring bolt removal
Post by: silverdorking on September 17, 2016, 09:47:07 pm: Thanks Dave but it turned into a drill out job as me and my able assistant proceeded to completely mangle the totally inadequate slots on the chain ring nut!
Title: Re: Chain ring bolt removal
Post by: Dave Whittle Thorn Workshop on September 19, 2016, 12:50:01 pm: If you just need the odd one email me your address and I will post one out dave@sjscycles.com
Title: Re: Chain ring bolt removal
Post by: silverdorking on September 19, 2016, 04:21:52 pm: Well thanks Dave I'll send you an email. This offer goes way above any expected levels of customer service!