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21 votes
Accepted

Should square taper cranks be greased before installation?

I started getting seriously into bike work circa 2002 and was lucky enough to come across Jobst Brandt's view of the topic around that time. Since then, most of which time I've spent working as a ...
Nathan Knutson's user avatar
15 votes

What is the most ecologically sustainable way to handle rags covered in chain grease?

In response to a comment, I will be explicit with the answer. The most likely ecologically sustainable way to handle rags covered in chain grease is throw them in the trash. The contents of the chain ...
mattnz's user avatar
  • 51.7k
11 votes
Accepted

Is lithium grease suitable for lubricating the steel headset cups when pressing them into the aluminium frame?

Yes, totally suitable. Of all the remotely common grease types, there's not really a scenario on bikes where the type matters for this application unless it's a titanium or stainless frame, and then ...
Nathan Knutson's user avatar
11 votes
Accepted

Do I need to apply something on thru axle?

I usually put a very small amount of grease on the threads at the end so that it will be easier to remove when you need to take it out again. As with all threaded connections these tend to seize-up ...
jwh20's user avatar
  • 978
10 votes
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Preventing staining of clothes when carrying bike

It might be a facetious answer on the face, but seriously - why are you carrying your bike at all? Do carry a working mini-tube, pump, two tyre levers and whatever you need to get the wheel completely ...
Criggie's user avatar
  • 128k
10 votes
Accepted

Which threaded fasteners on a bike should not be lubricated?

Basically every metal-in-metal thread on a bike should get some kind of treatment, because at the very least none of them are perfectly corrosion resistant, and as you say, thread lubrication helps ...
Nathan Knutson's user avatar
10 votes
Accepted

What range of rotational speed for bike wheel bearings?

Searching for "ndm rotational speed" finds that D and d are outer and inner diameters of the bearing. n is not the usual symbol for speed, but neither is the final unit "millimeters per minute divided ...
ojs's user avatar
  • 22.2k
10 votes

Do I need to apply something on thru axle?

I have a different question for you. What happens if the thru-axle threads and shaft are not greased (or the grease has washed out)? Answers: On a Cube eMTB with a 12mm rear thru axle and a Shimano XT ...
Noise's user avatar
  • 14.6k
10 votes
Accepted

Can time-till-rest be used as a hub-regrease-and-repack flag?

Keeping tabs on the condition of the hub as you describe could provide some interesting data that does relate to how in need of maintenance it is, but it also has these issues if you were trying to ...
Nathan Knutson's user avatar
10 votes

What is the most ecologically sustainable way to handle rags covered in chain grease?

Throw them away in energy waste bin. Consider this: if you get 10 000 km of use from your bike per one thrown away rag that weighs 100 grams and is made from oil products, that's 0.01 grams of oil ...
juhist's user avatar
  • 20.1k
9 votes

What do I do if I get chain lube on my brake pads?

I've seen recipes for decontaminating brake pads floated around but the easiest and safest thing to do is simply replace them.
Argenti Apparatus's user avatar
9 votes

Do I need to apply something on thru axle?

Information about what to grease on a through-axle can be contradicting even for the same model of an axle. An example below. Santa Cruz uses DT Swiss axles for their frames. The instructions on their ...
Grigory Rechistov's user avatar
9 votes
Accepted

Shimano pre-greased crank: where to spread the grease?

The dots of grease in question are there to lubricate the bolt shoulder, so that friction there is less of a factor in how much thread preload is achieved for a given torque input. Leave it in place, ...
Nathan Knutson's user avatar
8 votes
Accepted

Should there be grease in my steel frame's tubes?

Some mechanic might have put a liberal amount of grease in the BB shell and also in the head-tube prior to assembly. Then copiously greased the seat-post as well. Grease has a tendency to migrate, ...
Carel's user avatar
  • 8,329
8 votes

Can time-till-rest be used as a hub-regrease-and-repack flag?

The problem with unloaded (no outside weight/force applied) spin tests is that grease is viscous. An unloaded bearing without grease can actually spin more easily than a properly packed one. It’s only ...
Michael's user avatar
  • 28.4k
8 votes
Accepted

How much grease should I use to pack hubs?

I don't know much about the actual science of race day watt-saving as it applies here, and neither do most racers or mechanics. When people use low quantities of grease, or just run oil or lower-...
Nathan Knutson's user avatar
8 votes

What is the most ecologically sustainable way to handle rags covered in chain grease?

Do not try and put your oily rags through a washing machine process. Guess how I know this ! They will contaminate the machine, which is bad enough if its yours, worse again if its part of your ...
Criggie's user avatar
  • 128k
8 votes
Accepted

what is the significance of grease colour?

There isn’t a universal standard for what color grease means what. Some brands may have their own color schemes (eg. red for high-temperature grease, or using colors to indicate thickener types). ...
MaplePanda's user avatar
  • 16.3k
7 votes
Accepted

What is the equivalent for Shimano Roller Brake grease?

Just as a confirmation on the comments above, I found a post on a separate forum definitely recommending to use the specific manufacturer grease, with a couple of the following points (Cited here for ...
JohnP's user avatar
  • 3,273
7 votes
Accepted

To what extent is grease interchangeable?

Some greases really are special. But in other cases the grease doesn't really matter. Since so many companies just say to use their approved grease, it can be hard to tell apart which applications are ...
BetterSense's user avatar
  • 3,456
7 votes

Is lithium grease suitable for lubricating the steel headset cups when pressing them into the aluminium frame?

Grease will do much more to protect it than nothing, with many mechanics preferring marine-grade grease if near the ocean or salted roads. Optimally, you should use an anti-seize compound. In ...
cyanrarroll's user avatar
7 votes

Cleaning chain a few links at a time

When it comes to chain cleaning, you really consider the value of your time compared to the cost of a new chain. The only essential thing to do is a splash of lube regularly, along with checking chain ...
mattnz's user avatar
  • 51.7k
7 votes

Cleaning chain a few links at a time

There are two aspects to be understood when it comes to chain maintenance, and you need to understand how your chain is composed, most importantly, that the part contacting the teeth is not fixed, but ...
Burki's user avatar
  • 1,692
6 votes
Accepted

Wheels don't move freely after installing pinhead skewers

The skewer isn't an axle so nothing rotates and it and there's no need for grease. It's more likely that the wheels aren't completely straight in the dropouts causing the brakes or tyres to rub. I ...
Chris H's user avatar
  • 60.7k
6 votes
Accepted

Is it usual for grease to contract in cold weather?

Looks like it was stored upside down at some point. When you do this, the air bubble moves to the bottom and can take some time to return to the top. See also, Nutella, Marmite and other viscous ...
alex's user avatar
  • 5,764
6 votes

How much grease should I use to pack hubs?

I assume these are cup and cone hubs. The easy answer is that you can’t go wrong with a 100% fill. In a video on their YouTube channel, Calvin Jones of Park Tools recommended “lots” of grease, by ...
Weiwen Ng's user avatar
  • 33.8k
5 votes
Accepted

Is Park Tool Polylube "waterproof"?

Different greases hold up varyingly well in different applications, depending on levels of dust, water, temperature, etc. Park Tool Polylube PPL-1/2 are your basic bicycle greases -- they hold up ...
Batman's user avatar
  • 46.3k
5 votes

What do I need to grease when assembling a new bike?

This is for your specific bike. Must grease: Pedal threads Seatpost unless frame or post are carbon, then must apply carbon prep instead Things that usually have an adequate amount of grease or ...
Nathan Knutson's user avatar
5 votes

Should square taper cranks be greased before installation?

Park Tool Repair says greasing the spindle is 'an option', but says it is to prevent corrosion, rather than having any effect on how the crank goes on the spindle. ...
Argenti Apparatus's user avatar

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