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bqg/ - Bike Questions General

Anonymous Thu 28 Aug 2025 11:39:49 No.2052480 View View Reply Original Report

Quoted By:

Things you think are cool edition
Resources:
https://www.sheldonbrown.com/
https://www.parktool.com/en-us/blog/repair-help
Neutral Support News on Youtube

previous thread:>>2051108

Anonymous

Anonymous Sat 13 Sep 2025 10:35:23 No.2053748 Report

Quoted By:

>>2053734
you're a keen observer
greetings from >>>/o/dbt/

Anonymous

View Same Google ImgOps iqdb SauceNAO Ortlieb-Quick-Rack-Review_8-960x (...).jpg, 83KiB, 960x640

Anonymous Sat 13 Sep 2025 10:37:09 No.2053749 Report

Quoted By: >>2053764 >>2053767

Can I safely remove the small crossbars on the chain- and seat stays on a CroMo MTB to fit larger wheels? Do they serve any structural purpose?

Anonymous

Anonymous Sat 13 Sep 2025 11:57:25 No.2053754 Report

Quoted By: >>2053756

I'm building a new bike
deore xt di2 yay or nay?

Anonymous

Anonymous Sat 13 Sep 2025 12:48:53 No.2053756 Report

Quoted By: >>2053758

>>2053754
>di2
do the shift levers still need batteries if they're connected via cable?
my bike >>2053657 has them in wireless config and I want to change that

Anonymous

Anonymous Sat 13 Sep 2025 13:03:20 No.2053757 Report

Quoted By: >>2053797

>>2053735
germany

Anonymous

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Anonymous Sat 13 Sep 2025 13:04:35 No.2053758 Report

Quoted By: >>2053760

>>2053756
yeah, it will work without the coin batteries in the levers

but anyway, I was asking about the new wireless di2

Anonymous

Anonymous Sat 13 Sep 2025 13:07:16 No.2053760 Report

Quoted By:

>>2053758
>yeah, it will work without the coin batteries in the levers
Thanks

Anonymous

Anonymous Sat 13 Sep 2025 13:15:07 No.2053762 Report

Quoted By: >>2053763

How do i do basic maintenance on bikes? My family has always been into bicycles but only my brother and me ride anymore so i have a few old ones and no one in my family knows how to do bike maintenance other than inflating tyres

Also i live in a pretty humid place so the bikes on my garage get attacked by rust

Anonymous

Anonymous Sat 13 Sep 2025 13:27:05 No.2053763 Report

Quoted By: >>2053784

>>2053762
>basic maintenance
lube the chain
THAT"S IT
you can also clean it

>old rusty bikes
take apart, degrease, clean, replace parts if needed, relube, put back

Anonymous

Anonymous Sat 13 Sep 2025 14:44:43 No.2053764 Report

Quoted By:

>>2053749
Yeah, man. Go right ahead.

Anonymous

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Anonymous Sat 13 Sep 2025 14:47:32 No.2053765 Report

Quoted By: >>2053778

>>2053739
you can flush it.

Anonymous

Anonymous Sat 13 Sep 2025 14:49:43 No.2053766 Report

Quoted By: >>2053789

>>2053742
the bearings are in the hub. the freehub body has racheting pawls inside that are oiled

Anonymous

Anonymous Sat 13 Sep 2025 14:57:38 No.2053767 Report

Quoted By:

>>2053749
best idea in this thread yet, fuckin genius shit m8

Anonymous

Anonymous Sat 13 Sep 2025 18:01:52 No.2053778 Report

Quoted By: >>2053780

>>2053742
>>2053747
Nah, but I can hear it now. Its not a big deal imo.
Id service it if I had the tools though.
>>2053765
Thats basically what I tried. I think thats whats happened -that I used some degreaser (like a moron) on the cassette and some of it got into the freehub.

Anonymous

Anonymous Sat 13 Sep 2025 18:07:42 No.2053780 Report

Quoted By:

>>2053778
if you pour enough oil (or solvent) down the crack and keep spinning, whatever's in there will be carried out. the oil will be black when it comes out the other end, just keep pouring oil down it until it comes out oil colored. if you use solvent you need to pour lots of oil down it after.

Anonymous

Anonymous Sat 13 Sep 2025 21:08:23 No.2053784 Report

Quoted By: >>2053803

>>2053763
>lube the chain
is WD40 enough for that or do i need to look into something more specific?
>take apart, degrease, clean, replace parts if needed, relube, put back
ill have to look up how to take stuff apart, i only knew how to tense up the brakes a bit and how to remove the front wheel, and ofc how to get the chain back in place when it fell off in my older bike

At what point should i look into replacing parts? IE the gears or the chain. Some are really rusty in some of the bikes

Anonymous

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Anonymous Sat 13 Sep 2025 22:37:24 No.2053789 Report

Quoted By:

>>2053766
Ok thanks for the science lesson retard

Anonymous

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Anonymous Sun 14 Sep 2025 01:52:44 No.2053791 Report

Quoted By: >>2053798 >>2053829

>Salsa's new full sus drop bar gravel e-bike

why?

Anonymous

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Anonymous Sun 14 Sep 2025 01:55:32 No.2053792 Report

Quoted By: >>2053796 >>2053808

I asked in a recent thread if it looked like a small fracture at the bottle boss on my seat tube, well, today it finally revealed it self. Not sure what I do now?

Anonymous

Anonymous Sun 14 Sep 2025 02:50:36 No.2053795 Report

Quoted By:

Is zwift cringe or based?
I have a car and a gym in 5 minutes drive with descent stationary bikes is the weather is that bad.

Anonymous

Anonymous Sun 14 Sep 2025 02:51:42 No.2053796 Report

Quoted By: >>2053809

>>2053792
I recall my giant bike had a lifetime warranty for the p frame

Anonymous

Anonymous Sun 14 Sep 2025 03:54:32 No.2053797 Report

Quoted By: >>2053823 >>2053844

>>2053757
https://www.retrobikefranken.de/en/sachs-sram-7-gear/ has some parts...while all of their small wearables for the Spectro 7 (it's basically a SRAMified Sachs Super 7, sadly the internals aren't totally compatible) are out, they have some parts, and replacement hubs if needed. Maybe they'd be able to point you to a shop or something that can better diagnose what's going on and give you an idea of what to do. Could just be the freehub pawls and not the gears themselves

Anonymous

Anonymous Sun 14 Sep 2025 04:44:03 No.2053798 Report

Quoted By:

>>2053791
its a drop bar emtb

Anonymous

Anonymous Sun 14 Sep 2025 08:06:45 No.2053803 Report

Quoted By:

>>2053784
WD40 is not a lubricant. Great for cleaning the chain, but you still need chain oil.

Anonymous

Anonymous Sun 14 Sep 2025 09:36:02 No.2053808 Report

Quoted By: >>2053809

>>2053792
You know what to do haha. Next time get a proper bike without holes all over it. An anon says you have a warranty so hopefully he/she is right for your sake. Report back

Anonymous

Anonymous Sun 14 Sep 2025 10:47:26 No.2053809 Report

Quoted By:

>>2053796
Thanks, will suss.
>>2053808
Will report back what happens.

Anonymous

Anonymous Sun 14 Sep 2025 14:30:29 No.2053823 Report

Quoted By:

>>2053797
you think I can clean inside the hub with a multi spray before puttin grease on?

Anonymous

Anonymous Sun 14 Sep 2025 16:43:31 No.2053829 Report

Quoted By:

>>2053791
>why?
a fool and his money are soon parted

Anonymous

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Anonymous Sun 14 Sep 2025 18:05:43 No.2053834 Report

Quoted By: >>2053835

>>2053607 here
I found the problem
one bearing here cracked
how important is it there?

Anonymous

Anonymous Sun 14 Sep 2025 18:07:09 No.2053835 Report

Quoted By: >>2053837 >>2053839

>>2053834
also the lip on the bearing holder was bent weird so I bent it back in.
the bearing is 6mm but I only had 7mm ones and I out it there. how bad of an idea is that?

also where could I cannibalise a 6mm bearing? pedals? wheel hubs?

Anonymous

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Anonymous Sun 14 Sep 2025 18:37:19 No.2053837 Report

Quoted By: >>2053838

>>2053835
forgot

Anonymous

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Anonymous Sun 14 Sep 2025 18:38:26 No.2053838 Report

Quoted By:

>>2053837

Anonymous

Anonymous Sun 14 Sep 2025 18:43:44 No.2053839 Report

Quoted By: >>2053841

>>2053835
putting the wrong size bearing in there is a very bad idea.
not sure about cannibalization but you can get a bag of them overnight or 2day from the world's number one retailer or a variety of bike stores

Anonymous

Anonymous Sun 14 Sep 2025 19:18:27 No.2053841 Report

Quoted By: >>2053849

>>2053839
I need to bike tomorrow and its already night... I still need to figure out how to put it all back together.
I need it for transport because Deutsche Bahn is a complete Schieße, and I have an appointment I need to get to.

what's the worst that could happen with a slightly bigger bearing? my only other options are no bearing or putting the cracked one back in.

Anonymous

Anonymous Sun 14 Sep 2025 19:32:47 No.2053843 Report

Quoted By: >>2053844 >>2053856

the blueprints I found for spectro S7 don't match what I have in hand... what the fuck.

Anonymous

Anonymous Sun 14 Sep 2025 19:46:44 No.2053844 Report

Quoted By:

>>2053797
anon pls help >>2053843

Anonymous

Anonymous Sun 14 Sep 2025 20:43:48 No.2053849 Report

Quoted By: >>2053852 >>2053853

>>2053841
in my opinion, riding minus one for a few days until you get replacements should be ok. I guess it depends on how far you ride, but think about it: you've been riding on it for a while with one missing/not bearing any weight since it was in pieces. the others are bearing the weight it used to bear equally. and they look fine.
putting a bigger one in means when you adjust the cones, both races will bear only on the big one, the rest are too small to touch and will just be in there doing nothing.

when you get new bearings, get enough to replace all of them and pack with plenty of grease.

Anonymous

Anonymous Sun 14 Sep 2025 21:16:38 No.2053851 Report

Quoted By:

>>2053205
That's certainly a locknut with a serrated face, of the type normally used by bike hubs where they contact the dropouts. The only good way to match threading would be fitting it to a threaded rod with a known thread pitch. Also, snag calipers and measure how many mm wide it is. The fact that the guy behind the counter couldn't help you means that he's a pretty low quality tech. There should have been plenty of axles lying around in the shop that he could have tried that broken lock nut on. Then it's just a matter of identifying the thread pitch, identifying the width in millimeters of the lock nut, and then finding a replacement on the internet that corresponds to those standards. The hard part is actually finding an exact match. Best of luck.
Listen, if you were the one who managed to break that, you may not want to own a nice bike. Get something crappier and do your own bike work for a while. Don't break something nice being a shitter.

Anonymous

Anonymous Sun 14 Sep 2025 21:27:47 No.2053852 Report

Quoted By: >>2053856 >>2053859

>>2053849
okay anon, thank you.
I looked some more videos and a guy said they were 5.556mm, I only have an adjustable wrench, and it was around 6mm, and the documents have no listing for the size of the bearings, so I guess I'll just buy some 5.556 and stick em in.

also would like to ask, what's a good way to clean all the old grease and which grease should I get to freshen it up? I only have a tube of red jelly from Ali.

Anonymous

Anonymous Sun 14 Sep 2025 21:28:57 No.2053853 Report

Quoted By:

>>2053849
also my commute is around 30km in total there+return

Anonymous

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Anonymous Sun 14 Sep 2025 22:47:56 No.2053856 Report

Quoted By: >>2053861

>>2053843
that's bizarre, are you looking at pic related?
>>2053852
>clean all the old grease
WD-40/kerosene
>which grease should I get to freshen it up
NLGI 2. formulation/brand doesn't really matter imo, not for bicycle hubs

Anonymous

Anonymous Sun 14 Sep 2025 23:26:29 No.2053859 Report

Quoted By:

>>2053852
>grease
what you have is fine.

Anonymous

Anonymous Mon 15 Sep 2025 00:23:29 No.2053861 Report

Quoted By: >>2053862

>>2053856
no not that one, one with coaster brake
but it has the brake part with 3 pads and I have 1 cylinder part with two prongs

Anonymous

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Anonymous Mon 15 Sep 2025 00:26:09 No.2053862 Report

Quoted By: >>2053863

>>2053861
bottom right
but my shell looks nothing like that

Anonymous

Anonymous Mon 15 Sep 2025 00:29:11 No.2053863 Report

Quoted By: >>2053867

>>2053862
I think Sachs super 7 blueprint fits

Anonymous

Anonymous Mon 15 Sep 2025 00:51:10 No.2053865 Report

Quoted By:

>>2052669
See if the black part hooks to the side plate of a chain and a bike frame. The jockey wheel would be for keeping your hands clean.
Of course, a simple latex or nitrile glove is the superior option and takes up less space in your bike kit. Just keep a scrap of bent coat hanger if you're that concerned about keeping your chain off the ground.

Anonymous

Anonymous Mon 15 Sep 2025 02:13:16 No.2053867 Report

Quoted By: >>2053868

>>2053863
managed to put it back together.
Will try to find a 5.556mm bearing soon.

Anonymous

Anonymous Mon 15 Sep 2025 02:16:50 No.2053868 Report

Quoted By:

>>2053867
though I have a question how do I tighten the nuts when putting it back together so its not too tight or not too loose? there are two nuts and I didn't get why there's two, cause they don't really lock against each other, or maybe I did it wrong?

Anonymous

Anonymous Mon 15 Sep 2025 06:20:18 No.2053882 Report

Quoted By:

Holy shit, why are ahead headsets so expensive?

Anonymous

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Anonymous Mon 15 Sep 2025 07:35:37 No.2053884 Report

Quoted By:

Thinking of buying a Trek Dual Sport 2 Gen 5 (2023) from my local bike shop sometime next week to pick up cycling as a hobby and maybe use it as a grocery getter. Haven't ridden in 15+ years (never really rode enough to get the hang of everything properly either). Am I being dumb? The shop is selling the bike for $699. I really like the way it looks

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