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PostPosted: Mon Jun 29, 2020 12:00 pm 
Dirt Disciple

Joined: Wed Jan 10, 2018 3:10 pm
Posts: 28
Hi, could you please let me know if they'll be any problems with my upgrade to a modern compact chainset on a 90's braze-on frame?

There's about a 7mm gap at the moment (should be 2-3mm!). The FD is at the bottom of the frame's braze-on, so there's no more adjustment available.

It shifts fine on the workstand, but will there be any issues if I run it like it's currently set up?


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PostPosted: Mon Jun 29, 2020 1:13 pm 
r.B.o.T.M. & P.o.T.M. Winner
r.B.o.T.M. & P.o.T.M. Winner
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Joined: Thu Nov 22, 2007 10:51 am
Posts: 2585
Location: Camel Land
It’ll be fine as the gap on using Q rings or oval rings is a lot bigger than your 7mm.

It just won’t be as smooth a shift & more chances of the chain being unshipped if you change very fast...


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PostPosted: Mon Jun 29, 2020 2:10 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 10041
Location: New Forest, UK
You can get extender wotsits to lower the front mech if it doesn't play nicely.


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PostPosted: Tue Jun 30, 2020 9:33 am 
Dirt Disciple

Joined: Wed Jan 10, 2018 3:10 pm
Posts: 28
Thanks for the reassurance, I'll see how it goes and get an extension kit if needed.


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PostPosted: Tue Jun 30, 2020 9:38 am 
King of the Skip Monkeys
King of the Skip Monkeys
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Joined: Wed Nov 07, 2007 4:34 pm
Posts: 32316
Location: Bournemouth's most wanted
I'm sure this model of mech has its mounting bolt higher than yours, this would then allow the mech to sit lower on the frame mount


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PostPosted: Tue Jun 30, 2020 1:18 pm 
Retro Guru

Joined: Wed Dec 10, 2008 9:19 am
Posts: 2584
Location: Sheffield, top city
that's a triple front mech


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PostPosted: Tue Jun 30, 2020 1:23 pm 
King of the Skip Monkeys
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Location: Bournemouth's most wanted
Yes, and good for smaller chairings


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PostPosted: Tue Jun 30, 2020 4:23 pm 
Dirt Disciple

Joined: Wed Jan 10, 2018 3:10 pm
Posts: 28
legrandefromage wrote:
Yes, and good for smaller chairings


Thanks! - it gives me another option if I have problems with the 5600 105 FD


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