c/bicycle-mechanics

Old timer in Ohio talked me out of disc brake conversion

He said my 26 inch wheels would snap the dropouts with a torque arm setup, and after seeing 2 frames crack at his co-op in Columbus I get it now. Anyone else ever get talked out of a plan that actually saved them hassle?

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the_jason•3d ago

Blew out a spoke on a group ride in Boulder, now I check tension before every event

Was doing a fast Saturday group ride near Boulder Creek last month and my rear wheel just buckled on a downhill sprint, snapped a spoke clean at the nipple. I had just had the wheel trued a week earlier at a shop, so I figured it was fine, but now I'm wondering if I should buy a tension meter and do it myself instead of trusting someone else's quick spin. How do you guys decide when a wheel is safe for hard group riding, do you check spoke tension on every bike before an event or just after a crash or a big ride?

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emmag40•8d ago

Truing a wheel with zip ties instead of a dial gauge, am I insane?

So my budget dial indicator died last month and I needed to true a bent rear wheel for a customer in Portland, so I rigged up two zip ties as a poor man's pointer and honestly the results were spot on. Is that a legit trick or did I just get lucky, and would you trust that vs spending $60 on a proper Park Tool gauge?

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faithf77•9d ago

That $18 spoke wrench that stripped my nipples on day one

Picked up a cheap set from the hardware store to true a wheel for a client, and the jaws were way too soft... first turn and it rounded off the nipple completely, ruining the build. The replacement spoke and nipple cost me $9 plus an hour of re-lacing work, which is more than I wasted on the tool itself. Anyone else had a budget tool fail like this and end up costing way more than just buying the right one from the start?

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blairm35•10d ago

Hit 10,000 brake bleeds last month, is that a brag or a red flag?

I counted every brake bleed I've done in my shop over 8 years and 10k seems like a wild milestone, but half of those were on the same five customer bikes with mysterious recurring air bubbles, so are we really fixing problems or just keeping a broken loop alive?

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patricia42•10d ago

Fixed a creaky bottom bracket without taking it apart, still shocked

So my old commuter bike was making this creak every pedal stroke for like 3 weeks. I was sure the bottom bracket was toast, already priced out a new one at $45. Then I read somewhere to check the chainring bolts first. Took off the crank arm, sure enough two of the five bolts were barely finger tight. Loctite'd them, torqued to spec, and the creak is gone. I spent all that time imagining a big repair when it was a 20 minute fix. Has anyone else had a creak that turned out to be something dumb and simple?

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bettyh84•11d ago

That flat rate quote for a bottom bracket made me walk out

Shop in Tucson wanted $90 to press in a new BB and call it an hour. Took me 25 minutes with my own press and a torque wrench in my garage. Has anyone else seen shops padding labor on parts that take less time than their minimum?

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the_charlie•12d ago

Derailleur hanger alignment tools are worth it, trust me

Bent my hanger last month on a trail near Boulder and tried the old eyeball method for two rides. Shifting stayed crunchy no matter how I tuned the cable. I finally bought a $45 alignment gauge, spent 10 minutes with it, and it shifts like new. Has anyone else found that skipping this tool just wastes more time in the long run?

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ward.fiona•13d ago

Customer didn't believe me until I let him watch the derailleur fail live

Had a guy in the shop last Tuesday swear his shifting problem was the new cassette I sold him. I checked the cable tension, checked the hanger alignment, everything looked fine on the stand. So I put it on the trainer with a wheel sensor and let him shift through the gears himself. Third shift up, the old shifter slipped twice and he saw the chain skip before I touched anything. He went quiet, asked what a new shifter costs, and paid for it on the spot. Anyone else have luck using real-world tests to shut down the blame game?

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clark.faith•14d ago

Torque specs printed on cheap stems almost cost me a customer today

I was swapping a stem on a commuter bike and the laser-etch said 6Nm. Out of habit I checked the actual bolt diameter and it was M5, which should be closer to 8-9Nm according to the Park Tool torque chart. Snapped one bolt at 6.2Nm testing it on a scrap piece. Has anyone else caught bad torque numbers printed right on parts from discount brands?

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logan_thomas87•14d ago

Old school cone wrench feel vs. the new torque spec approach

I used to just crank down hub cones by feel, maybe a quarter turn past snug, and hope the wheel spun smooth. After a customer brought back a wheel with a grooved axle from over-tightening in Pittsburgh last spring, I switched to a Park Tool TW-5.2 and started setting preload at 5 Nm on the locknut. Has anyone else made the jump from touch to torque, or do you still trust your hands on older cup and cone hubs?

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xena_allen•15d ago

The brake pad wear gauge in my head finally clicked after 15 years of guessing

Last Tuesday I was bleeding a set of old cantis for a neighbor's kid and I realized I've been checking pad wear by feel this whole time. Just pressing the lever and eyeballing the gap. It worked fine for me but I could never explain it to anyone else. Then I had the kid hold a credit card next to the rim while I squeezed, we used the card edge as a straight reference and suddenly the whole thing made sense. Anyone else got a lazy mechanic trick that turned into a teaching moment once you had to break it down for someone new?

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noah415•18d ago

That old guy in the shop who said my chain was fine, he was right

Customer brought in a creaky bottom bracket last Friday and this retiree hanging around said it was just the chain needing lube, I brushed him off. After 20 minutes of chasing ghosts I tried his way first and the creak vanished, so now I listen before I tear anything apart. Anyone else had a veteran regular save them from overthinking a simple fix?

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the_sandra•19d ago

Bleeding hydraulic brakes used to take me an hour, now it's 15 minutes

I used to do the whole syringe-and-hose dance with mineral oil and it always ended up with air bubbles and a mess on my shop floor in Portland. Switched to a pressure bleeder kit last spring after three failed bleeds on the same commuter bike, and honestly the difference is night and day. Anyone else hold out on buying nicer bleed tools way longer than they should have?

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the_faith•19d ago

I picked grease over antiseize for my bottom bracket, no regrets

Everyone in the shop swears by antiseize on threads, but after 5 years of winter salt and creek crossings up here in Boise, my Phil Wood cup came out without a fight. I used marine grease instead, and it held torque perfectly at 35 Nm. Anyone else run grease on steel frames just to keep things simple?

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blairm35•21d ago

Cheaped out on disc brakes and now my hands hate me

Been piecing together a winter commuter bike for the last few weeks and hit a dead stop on the brakes. I had a set of older mechanical disc calipers sitting in a parts bin, but the local shop in Portland quoted me $180 to install a full hydraulic setup with new levers. I went with the cheap route because my budget was already blown on fenders and studded tires, and honestly I regret it a little. The mechanicals work fine on dry days, but after two mornings of wet slush they need constant cable tension tweaks and the lever pull feels like squeezing a stress ball. A buddy told me "you get what you pay for" when I showed him the install, and now I'm wondering if I should just bite the bullet and swap before winter really hits. Has anyone else run mechanical discs through a full wet season and actually gotten them to stay consistent, or am I just fighting a losing battle?

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nora_park72•22d ago

Took me 8 years to realize I was over-greasing bottom brackets

I've been building wheels and doing full overhauls since 2016, always packed the BB with as much grease as I could fit. Last month a customer's bike came back with that grinding feel after 300 miles, and when I pulled the cups there was grease everywhere but the bearings looked dry. Turns out the excess grease was just trapping grit and the actual contact points were starved. Anyone else learn a basic assembly habit wrong and only catch it after a comebacker?

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nora_park72•25d ago

Been seeing way too many people grease disc brake pad backing plates

I've noticed a bunch of posts lately where folks are putting grease on the back of brake pads to stop squealing, and it keeps biting them. Did two brake jobs at the shop this month where the customer had done this and the pads basically slid right out of the caliper after a hundred miles. The grease creeps onto the friction material when it gets hot, then you got zero stopping power and a rotor that's now ruined. I'm not saying anti-seize on caliper bolts or sliding pins is wrong, that's fine. But the backing plate sits in a tight space and any grease will migrate, it's just physics. Has anyone else seen this trend come through their stand, or am I just getting the unlucky ones?

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the_seth•25d ago

That time a shop veteran told me to stop chasing spoke tension with a gauge

Old timer named Gary at the co-op I used to volunteer at said I was overthinking wheel builds. He told me to just get the spokes tight by feel and listen for a consistent ping when you tap them. I thought he was full of it since I had just dropped $60 on a Park Tool tension meter. After a month of fighting with loose spokes and wobbly wheels, I finally tried his method on a customer's old hybrid. First wheel I built by ear came out perfectly true and I haven't touched the gauge since. Has anyone else found that the old school methods actually beat the expensive tools?

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noahhall•26d ago

Wasted $120 on a chain wear tool that was just guessing

I used to think those cheap chain checkers from Amazon were fine until I compared one against a Park Tool CC-4. The cheap one said my chain was fine at 200 miles but the Park Tool showed it was already stretched past 0.75. I ended up replacing a cassette and chainring that got eaten up because I trusted that $12 tool for too long. Anyone else find out the hard way that you get what you pay for with measuring tools?

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irishenderson•26d ago

The time I fixed a customer's squeaky crank at the register instead of in the shop

I was checking out a guy buying chain lube at the store and he mentioned his bike squeaked on every pedal stroke, so I spent 10 minutes with an Allen key tightening his crank bolts right there by the exit and now I keep a set of hex wrenches under the counter at all times.

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black.jordan•27d ago

PSA: Don't waste money on cheap cassette removal tools

I figured I'd save a few bucks and bought a $12 no-name cassette tool off Amazon instead of the Park Tool one for $25. First time using it on a Shimano 11-speed, the teeth stripped out and rounded off the lockring. Had to cut the thing off with a dremel, wasted a whole afternoon. Has anyone else dealt with those cheap tools that just don't hold up?

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nora184•1mo ago

Was I the only one installing bottom brackets wrong for years?

I always torqued my Shimano Hollowtech II bottom brackets to like 50 Nm because I thought tighter was better. Last month I had a customer bring in a creaking bike and the manual said 35-40 Nm max. I backed mine off and the cranks spin way smoother now. Did I mess up other bikes doing it too tight or is more torque fine?

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jamie_clark•1mo ago

Pro tip: Stop torquing your stem bolts in a circle

Was at the shop last week and saw a guy tighten his stem in a clockwise pattern like he was doing the lugnuts on a car. That's how you get uneven preload and a creaky stem after 200 miles. I used to do it too until a old mechanic yelled at me about it. You gotta go criss cross like you're seating a head gasket, then do your final torque in small increments. Any of you guys actually torque to spec or just go by feel?

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abbyd36•1mo ago

Showerthought: Most hydraulic brake bleeds are ruined by air trapped in the caliper, not the lever.

After watching a shop in Portland spend 20 minutes on a sticky brake last month I realized I've been blaming the wrong part of the system for years, has anyone else found that a quick tap on the caliper with a rubber mallet saves more hassle than re-bleeding the whole line?

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