c/bicycle-mechanics

22

wendy_carr•5h ago

The old shop I started at used a spoke tension meter from the 70s

I saw one of those new digital spoke tension meters last week and it does in 10 seconds what used to take me 10 minutes of plucking and guessing. Has anyone else noticed how accurate these new ones are compared to the old analog stuff, or is it just me overthinking it?

1

davis.dylan•1d ago

That customer who told me I was lubing chains wrong

Had some guy in full kit watch me put lube on a customer's chain last Tuesday and he goes "you're just making a mess doing it that way." He showed me to put one drop on each roller pin by turning the crank backwards real slow and now I actually get way less lube fling-off after rides. Has anyone else had a random stranger call them out on something that turned out to be a better way?

21

zarar75•2d ago

Unpopular opinion: re-greasing press-fit bottom brackets actually works

After swapping chains three times on my Trek in Portland with creaking still driving me nuts, I pulled the cranks and packed the shell with marine grease before re-installing and the noise vanished completely has anyone else tried this trick or am I just lucky?

19

blair_gibson78•18d ago

Saw a shop in Austin fix a cracked carbon frame with a coffee cup patch

Guy at Mellow Johnny's took a busted fork and repaired it using epoxy and a cut-up Starbucks cup. Anyone tried this kind of field repair on a frame?

20

jakewilliams•18d ago

Hit 1000 complete rebuilds last Friday and it felt weird

Honestly I was just counting for my own records and when I finished that last bike I realized I was at exactly 1000. Took me about 12 years working part time out of my garage near Portland. Never thought I'd get there when I started with a beat up Schwinn in 2012. The milestone felt bigger than I expected, like all those hours messing with seized bottom brackets and finding hidden frame cracks actually added up. Has anyone else kept track of a number like that and had it catch you off guard?

22

gavinross•19d ago

Bottom bracket standards are getting out of hand - how many do we actually need?

I was counting yesterday and found there's at least 12 different bottom bracket standards out there right now. Is all this variety actually helping riders or just making it harder to stock parts and keep things simple?

4

samw47•19d ago

Spent $80 on a 'premium' bike chain tool that broke on the first use

I mean, I know you get what you pay for sometimes, but this thing was supposed to be heavy duty. Got it from a shop in Denver after my old Park Tool finally gave out after like 10 years. First chain I tried to break with it, the pin snapped clean in half. The tool, not the chain. Just a warning to anyone looking at those no-name brands on Amazon. Anyone else had a tool fail on them right out of the box?

23

wadefoster•22d ago

That one week last July when everything went right in the shop

Ngl, I had a stretch back in July where I rebuilt 3 old Schwinns in 5 days and every single one rolled out perfect. One was a 1972 Varsity that needed a whole new bottom bracket and I got the old cup out without any heat or drama. Has anyone else ever had a week that just clicked like that where nothing fought back?

16

andrew646•24d ago

Realized I was facing the wrong way when truing wheels for years

I used to always stand with my back to the wheel and look straight down at the rim. Last week a guy at the co-op told me to stand off to the side and sight down the rim instead. It took about 5 minutes for me to see how much I'd been missing. Has anyone else had a basic habit that someone just pointed out was wrong?

7

morganhayes•25d ago

Just found out Shimano changed their B-link spec 3 years ago and nobody told me

Was building up a new gravel bike last night and the derailleur wouldn't shift right. Took me an hour of messing with cable tension before I finally checked the Shimano tech docs online. Turns out the B-link for GRX 12-speed has a different angle than the 11-speed stuff I've been using. Had to order the right one. Has anyone else run into this?

20

the_jake•25d ago

Just realized I was over-torquing stem bolts for years

Heard a guy at the co-op say carbon stems need way less force than steel ones, like 4 Nm max. Checked my torque wrench and yep, been cranking them to 6 Nm. Anyone else make that mistake?

13

riverowens•25d ago

Had a customer yesterday who insisted I was wrong about his brake cable routing

He kept pointing at a photo from some forum saying I should run it outside the frame, even though I could see the housing was already fraying from the curve he wanted. I asked him if he'd let me show him the difference in cable pull with a 5 minute test, and he finally agreed after I tweaked his front derailleur for free.

14

wade780•27d ago

Spent $120 on a fancy bottom bracket tool kit I barely used

I thought I was being smart buying that full Park Tool BBT kit back in 2020, figured I'd rebuild all my own hubs and cranks. Turns out most modern bikes use press-fit or different standards now, so that tool just sits in my drawer. I only used it twice, once on an old Fuji and once to help a buddy, and then realized my local shop charges like $15 for a swap. Has anyone else bought a specialty tool thinking you'd save money, only to have it collect dust?

24

linda305•28d ago

Finally saw the light on disc brake bleed kits...

I used to think spending $60 on a bleed kit was a total ripoff and just used a turkey baster and some tubing I had laying around. But last Tuesday I was out on a group ride near Boulder and my front brake started feeling super spongy right before a steep downhill. I pulled over and tried my little DIY bleed trick, but I just ended up with a mess of oil on my hands and the brake still felt like garbage. A buddy let me borrow his legit Park Tool bleed kit and I had it fixed in 10 minutes with zero mess. That experience convinced me that sometimes the real tool is worth the money even if it hurts the wallet. I still feel a little dumb for fighting it for so long. Has anyone else had a similar moment where a cheap fix just made things worse?

15

kellyr18•1mo ago

Spent 2 hours hunting a ghost shift on a SRAM drivetrain...

Turned out the cable housing was cut 3mm too short at the shifter end. Didn't notice until I pulled it all apart and measured with a caliper. Anyone else had weird shifting issues that were just a housing length problem?

2

aaron_wilson17•1mo ago

Tried setting up tubeless tires with just a floor pump and it actually worked

I've been a mechanic for about 6 years now and always used a compressor or a big air tank to seat tubeless beads. Last week I was doing a quick tire swap on my own bike at home and my compressor was at the shop. I figured I'd give it a shot with just my old Topeak floor pump just to see what would happen. To my surprise the bead popped on with maybe 10 solid pumps. I used Stan's sealant and some DT Swiss rims with Schwalbe tires. I think the trick was having the tire sitting in the sun for a bit to soften up the rubber. Has anyone else gotten lucky with a floor pump or was this just a fluke?

17

ben402•1mo ago

Question about why so many people overtighten stem bolts like they're lug nuts

I was helping a friend fix his creaky handlebars last weekend and found his stem bolts torqued to what felt like 15nm and the steerer tube was already starting to dimple, has anyone else seen this kind of damage from people just cranking down without a torque wrench?

11

joel_mason22•1mo ago

Had to pick between Campy and Shimano for my first real bike build

Tbh I never thought I'd be building a bike from scratch but last month I got a vintage steel frame from a guy on Craigslist for 60 bucks. I spent like 3 days going back and forth on groupsets because my buddy swears by Campagnolo but my local shop only stocks Shimano parts. Ended up going with a Shimano 105 kit since I could get help if I messed up the install. Honestly the shifting is super smooth and I don't regret it but I'm still curious if Campy feels different. Has anyone here swapped from one to the other and noticed a big difference?

0

jamierodriguez•1mo ago

Found out most bike shops charge way less for a tune up than they used to

I was looking at some old shop rate sheets from 2018 that a buddy saved, and a basic tune up back then was like $80-90 in most places. Now I'm seeing shops in Portland and Seattle still hovering around $100-110, which honestly doesn't seem like much of a jump for 6 years of inflation. Labor and parts have gone up way more than that everywhere else I look. Anyone else noticed their local shop holding prices steady while everything else got expensive?

19

claire958•1mo ago

A customer's busted carbon frame in Boulder made me stop trusting torque specs blindly

I was working at a shop in Boulder last year when a guy brought in his fancy road bike with a cracked seatpost clamp area. He swore he followed the 5 Nm spec printed right on the clamp. The carbon was just crushed. That was the moment I realized those factory torque numbers are sometimes just a suggestion, not a law. You have to factor in carbon paste, the specific frame layup, even the weather. Now I always start a full newton-meter under spec with carbon parts and work up slowly while feeling for compression. I've seen too many 'in spec' failures. How do you guys handle torque on carbon when the printed number seems off?

8

the_shane•1mo ago

Heard a customer at the Denver shop say he never cleans his chain because 'the dirt holds the lube in'

I was building up a wheel and overheard this guy talking to another mechanic. He was totally serious about not cleaning his drivetrain. It made me realize how many weird myths are out there. I explained that grit just grinds down the metal, and he seemed surprised. What's the strangest bike care belief you've had to correct?

6

hart.parker•1mo ago

PSA: A customer's simple question about his chain made me stop and think.

An older guy came into the shop yesterday with a worn-out 9-speed chain. He asked, 'Is this really all that's holding me to the road?' I gave my usual spiel about wear and safety, but he just said, 'I trust you to keep it that way.' It wasn't about the part, it was about the trust in the work. Made me slow down and double-check every link on his new one. Do you ever get those moments that just reset your focus for the day?

6

charles_price•1mo ago

PSA: I just learned that a properly tensioned chain should only deflect about half an inch, not a full inch

Read it in an old Park Tool manual I found at a garage sale for a dollar. Has anyone else been over-tensioning for years without realizing it?

20

andrew693•1mo ago

Just flushed $60 on a cheap bottom bracket tool that stripped immediately

I grabbed a no-name BB tool from the discount bin to save time on a repair, and the splines gave out halfway through the install. Had to buy the proper Park Tool version anyway. Anyone have a go-to brand for these that actually holds up?

7

william407•1mo ago

Appreciation post: My shop's old truing stand was off by 2mm for months

I finally borrowed a Park Tool TS-2.2 from a friend's shop last week and re-checked every wheel I'd built on my old one. The difference in how smooth and quiet the bikes roll out the door now is huge. What's your go-to method for making sure your truing stand is actually true?