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2 comments
Yeah I'd thought of doing something like that. For now I've handed it to my very LBS to play with, but a standard hex bolt and nut had occurred to me. You'd think Brooks would have improved the design by now. But do they care? I doubt it. I have a Selle Anatomica saddle on another bike that is much easier to adjust.
As you say, this is a common failure. The best advice I've found (with explanations, photographs and links to appropriate videos) is on the CTC forum thread "Brooks bodge":
https://forum.cyclinguk.org/viewtopic.php?t=147400
I also bought a replacement Brooks tension bolt, and found it impossible to fit because the thread doesn't tighten close enough to the head of the bolt - it isn't threaded close to the head. You need a Brooks factory tool or ridiculously strong hands.
However, if you can source a suitable non-Brooks bolt you can reuse the nut from the broken bolt, tighten (effectively re-tap) the nut as far as the head of the new non-Brooks bolt.
Then you can slot the bolt in place within the saddle's metalwork, hold the nut firmly with the Brooks spanner and turn the M8 bolt anti-clockwise (mine needed a 5mm hex wrench) so that it tensions against the metalwork of the saddle's nose.
Carefully read the instructions in the CTC forum thread. And here is a copy of the invoice for the bolts I picked up. Around a fiver.
[ edit: here is an Amazon link if you're interested: https://www.amazon.co.uk/gp/product/B00SN3SR1A/ref=ppx_od_dt_b_asin_titl... ]