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Brake Arm length(10 posts)

Brake Arm lengthdog727
May 16, 2001 6:56 AM
I recently picked up a set of Ultegra 600's. THey are replacing my lighter, older, single axle Shimano brakes. Upon replacement, I found that the rear brake does not have as long of a throw, and will not reach the rear rim. IS there anyway to change this? I have adjusted the pads as far as possible, but I think I am just stuck with my old rear brake (no quick release, argh).

short vs "normal" reachclub
May 16, 2001 8:30 AM
back when most frames had more clearance, they used "normal" reach brakes, with only fancyass racing frames using "short" reach, which is what you just acquired. Now short reach is normal, and "normal" reach -- what's on your bike -- is less common. To convert short reach to normal reach, you need a "drop bolt" which lowers the pivot. Try Third Hand, they might have them. Campy drop bolts were common, but there usedta be some for Shimano as well. If not at Third Hand, try Harris Cyclery/Sheldon Brown, they/he stock(s) esoteric rare older stuff like that as well.
$38.25 at 3rd hand!dog727
May 16, 2001 8:39 AM
Too rich for my taste. I have read rumors that there were 105's that had a long reach. NLA?
Is Third Hand still alive? I thought it closedCory
May 16, 2001 10:03 AM
They sent me a going-out-of-biz catalog four or five months ago. Be nice if they were still around...
Reopened as Loose Screwsdog727
May 16, 2001 10:08 AM
website stayed the same though,
Drop Bolt or New Caliper?dog727
May 16, 2001 9:11 AM
Okay, looks like 2 options:
1. Drop Bolt from Third hand for 38 bucks or
2. Shimano RX100 Rear Brake Arch 48-57mm /Each for 29 bucks.

Any votes as to which is the better way to go? Will I see a dramatic difference between the RX100 and a drop bolted Ultegra caliper?
Drop Bolt or New Caliper?skinner
May 16, 2001 10:28 AM
I would go with the Ultegra short reach and the drop screw. 2 reasons why: 1) Ultegra is a better caliper 2) (short reach and long reach calipers use the same lever) the short reach has a slightly better mechanical advantage.
cool old retro centerpullsclub
May 16, 2001 4:11 PM
check your shop's dead parts box for a pair of old retro centerpulls, they'll probably give 'em to you. they're all normal reach, some are even superlong, longer than normal "normal" reach so they're good for no-braze cross bike conversions, or running fat 35cs with fenders. you'll need a headset cable hanger and a hanger that attaches at the seat binder bolt too. Weinmann, Dia-Compe, and if you're lucky, an old set of Mafac racers - I just scored a pair of those off a bike my LBS put in the dumpster. They all work reasonably well, centerpulls used to come on "good" bikes, with only cheap Varsitys and their ilk getting speced with sidepulls. Check pro peloton pix from the 60s, that's all you see. Plus they look retro, did I mention that. Bet the young'uns you meet on the road won't even know what they are, and the oldtimers like me will nod their heads in appreciation.
Uh, if your shortreach pads miss the rim by only a millimeter or three, you can lengthen the slot for the pads with a rattail file, just use good judgement about how much metal is left below the slots.
re: Brake Arm lengthTom C
May 16, 2001 9:53 AM
Got my long reach calipers on ebay, 1973 vintage Gran-Compes,quality is comparable to Nouvo Record. I couldn't complain at $9.60 excluding shipping. Just go to bicycles in the sporting goods section and punch in brakes. It might take a couple of weeks for something to come up but there is usually a constant flow of vintage stuff there. Good Luck.
re: Brake Arm lengthflybyvine
May 18, 2001 3:54 AM
I have been down that road already. I had set of dual pivot 600's off my main (read a newer) bike after I upgraded that to Record (a long story to do with not being able to service Ultegra levers). My old 1980's ride still had some single pivot 600's so I thought I'd give it some extra braking power.

Encountering the same problem as you, I ended up springing for drop bolts from Harris which (albeit expensive) have worked fine. A bit tricky to integrate into the caliper assembly but once there you hardly realise it. It may have been cheaper to buy some low end newer calipers but I already had the Ultegra's lying there.