KneesUp
Guru
Inspired by @cosmicbike 's thread about an old Peugeot, I got mine out earlier, from behind two other non-rideable projects, much to my shame.
I've been getting together a few bits with the idea of fitting them, one of which is a new rear derailleur to replace the rather tired Simplex one it has currently. After 35 years I think it's done it's fair share of changes.
The frame has no lugs for mounting though, instead it uses this plate, which sits in the drive-side drop out.
Outside view
Inside view (there is a flat nut that the derailleur bolts in to, but I've just noticed it's not in the picture because I left it on the old derailleur so I don't lose it)
The nut you can see in the top picture is to hold it on to the bike - it screws in to the D shaped piece of metal and that clamps it into the drop out, so there is no threaded part on the bike for it to bolt onto at all (which I suppose makes the frame ideal as a fixie, but I live in Sheffield so that ain't going to happen!)
Unfortunately my new derailleur doesn't fit because evidently the standard mounting bolt had got bigger since 1979, so it doesn't fit through the hole, let alone into the flat nut that I haven't taken a picture of.
My question, therefore, is where the chuff can I get one of these with a bigger hole in it from, or do I just need to get a friendly mechanic to drill this one out?
Also, while you're here, as it were - how much clearance is considered acceptable with mudguards? The bike has guards on it, which I might as well keep, but as the roads here are so awful I'd quite like my chunkier wheels and tyres on it - currently 700 x 37, but the clearance is a little tight around the fork crown. Does this look too snug to the trained eye (i.e. not mine)? Thanks.
View attachment 84438
I've been getting together a few bits with the idea of fitting them, one of which is a new rear derailleur to replace the rather tired Simplex one it has currently. After 35 years I think it's done it's fair share of changes.
The frame has no lugs for mounting though, instead it uses this plate, which sits in the drive-side drop out.
Outside view
Inside view (there is a flat nut that the derailleur bolts in to, but I've just noticed it's not in the picture because I left it on the old derailleur so I don't lose it)
The nut you can see in the top picture is to hold it on to the bike - it screws in to the D shaped piece of metal and that clamps it into the drop out, so there is no threaded part on the bike for it to bolt onto at all (which I suppose makes the frame ideal as a fixie, but I live in Sheffield so that ain't going to happen!)
Unfortunately my new derailleur doesn't fit because evidently the standard mounting bolt had got bigger since 1979, so it doesn't fit through the hole, let alone into the flat nut that I haven't taken a picture of.
My question, therefore, is where the chuff can I get one of these with a bigger hole in it from, or do I just need to get a friendly mechanic to drill this one out?
Also, while you're here, as it were - how much clearance is considered acceptable with mudguards? The bike has guards on it, which I might as well keep, but as the roads here are so awful I'd quite like my chunkier wheels and tyres on it - currently 700 x 37, but the clearance is a little tight around the fork crown. Does this look too snug to the trained eye (i.e. not mine)? Thanks.
View attachment 84438
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) so it might be nicer to ride on days when I don't need to take my laptop and so on to work - when it gets nicer I'd like to use this to turn my commute into a long-ish ride, all on road. But the roads here are seriously bad - I did commute on it once: 32 year old corroded Weinmann calipers and 30 year old Mavic E3 rims plus 110psi was not a comfortable combination. (And my word, a 46" bottom gear, Sheffield hills and no cycling miles for almost 15 years was worse!)
