12. How to Check If Your Bearings Are Worn
Did you know that you can check the health of your bearings by listening to your bike seat?
Here's a handy tip that will help you access whether or not any of your bearings are worn out. You'll need to have the wheels suspended in the air somehow, using either a repair stand, hanging it from the roof, or by getting a friend to hold it up for you.
You can listen to your bike by pressing your ear up to the front of the seat. It will act as a speaker, amplifying the bike's internal noises.
Now spin each of your components and listen to the sound. You will hear noise, but it should sound smooth and even. If it sounds loud and/or uneven, it is likely dry or worn out, and your bearings will need either an overhaul or complete replacement.
When checking the bottom bracket bearings, it's helpful to shift the smallest sprocket and remove the chain to eliminate the noise generated by the chain and chainring.
To hear the rear wheel bearings better, remove the chain from the freewheel by removing and re-installing the wheel, so that you don't hear the ticking as it spins around.
Since the headset doesn't spin around as fast, it's more difficult to hear if it's worn. Any dryness or wear in the headset bearings will be very obvious, and you'll feel a notch in the rotation if they're pitted. Pitting usually occurs when the front wheel is pointing directly forward.
As I start taking measurements of (What I believe is a Peugeot U09 from 1980) for the upcoming "thrift shop fork",
I came across something that I may have posted before, but thought, what the heck, see if any information on this has changed.....
Believe it or not, the original Paper Tag on the bottom of the frame by the crank, is still there and legible!!!
On the Paper tag is the following: 5286275 038157
It also has a number stamped of the flange for the rear axle.
On the metal frame is stamped: B0018618
... Read more >>
I have just acquired a Cervelo Soloist 2006, has the Ultegra 6600 groupset. It was making a clickity grinding sound whenever I'm on the larger 2 or 3 sprockets (doesn't matter which chainring) when I'm pedalling hard and fast.
Anyways, took my crank, chain rings, and bottom bracket off to clean, inspect, regrease and retorque. Greased my new pedals and torqued them on. Adjusted my front derailleur and rear derailleur (have adjusted the B screw as well to give plenty of slack). Still no good. I've even fully slackened the lower limit on the FD so there's plenty clearance left and r... Read more >>
We moved from Chicagoland to Mountains of NC in July....
My 1980 Peugeot U09 front Derailleur got bent way out of shape by the movers...
Knowing the availability of 1980 era French Simplex parts, I had a day while I awaited the remaining furniture, and I took the Front derailleur apart, carefully straightened the metalwork on a flat metal vise to the point where (I felt) it was back to "normal", and put it back together and adjusted it.... and in about 8 hours, it actually worked!! Tested it with 15min ride... Seems OK...
I eventually had to pu... Read more >>
It is with heavy heart I come to you today. I swapped some wheels from a bike my daughter and I bought. Cleand up the DAc50's to put on the bike. Decided to give her Spec Ruby a real good clean before I put the wheels on. It's a good thing I did. See she had a crash about 2 weeks ago and destroyed her front rim. I had a rag with a light degreaser on it and wiped over the top tube where it revealed a rather good sized crack at the head tube. Took it to the LBS I trust and they confirmed it is a crack.
Have done some checking around and found some repair options.... Read more >>
Can someone explain me what those holes are made for?
they are on the both sides, dimensions as shown in the pictures...
Thanks!!... Read more >>
Hi everyone. I am new here and to cycling in general. I got myself a Giant Cypress (2013, I believe) bike in Arizona. After two years, I needed to move to Atlanta, GA so I had my friendly local bike shop box up my bike and had it shipped away. Here in Atlanta, I don't have a car yet and the days are pretty hectic so I haven't had the time to hit up a local bike shop to have my bike re-assembled.
I'd like to do it myself if possible and I'd like to know what tools are needed to re-assemble the bike? I currently have an adjustable wrench, a hex wrench set, and all sorts of Ph... Read more >>
Recently received this bike from the parents since I moved into the city. I tried to take it to a local bike shop but they said it was better to just buy a new bike instead of trying to update.
Sorry to sound repetitive but I am new to bicycling and have no idea what I am doing. I am willing to learn and I have patience. Yes, I understand that I could more than likely get a bike on Craigslist in running order for the same price for what I'm going to put into this project. I want to be able to ride something that I have built up with my own hands. Anyways onto the bike.
Read more >>
Hi guys, So my housemates for my birthday decided to buy me a bike as my work is quite far and buses and owning a car are far too expensive for me. However it is very much a bike bought on a student budget and needs some fine tuning and I was wondering if you could help me. I am a complete novice at everything bicycle related and am posting on here to see if I could fix these issues instead of taking it to Halfords and having to pay quite a bit for the repairs.
I have been browsing around this website for a while and there are a few threads which seem to be talking about what I n... Read more >>
Been away for a while.... But wanted to post that the assistance You Folks gave on the Overhaul-ing of the ~1980 Peugeot U09 and ~1970 Gitane Gran Sport Mixte is a resounding 100% Success story!
Bar and Seat repositioning made the posture and comfort level increase;
New cables and improved brake pads made it stop better;
New bearings and seats made it roll better!
Cleaning/Adusting/New cables for Derailleurs and sprockets made it work correctly, and improved cosmetic appearance, too! I did have to epoxy glue the plastic front Derailleur mount on Gitane, as i... Read more >>
Hi everyone! I have a problem which I can't seem to figure out. Recently my rear-gears have been making a VERY loud clicking sound every rotation of the peddle. This only happens when I am in one of the 6 (out of 8) larger gears in the rear, AND I am going uphill and putting a decent amount of force on the peddles. All other times everything is smooth.
So I put my bike upside down, checked to make sure nothing was loose, and tried manually rotating the peddles with my hands in these larger gears. Nothing, it doesn't make a sound, and everything looks un-bent.
Now... Read more >>
I am looking for some inspiration really which way to take this either to continue or scrap this in favour of a 29er.
I have a bike that I have cobbled together over a period of time it used to be a kona cindercone frame I upgraded the front forks to sid's thinking it would make it ride a lot nicer and it still crashes over everything like it a rigid.
I was offered a nice Cube Reaction GTC pro carbon frame so I got it and it still rides harshly, I done some research to find that sid's even when at the specific weight setting run hard so I now run ... Read more >>
I'm new here so please forgive the dumb questions I will eventually
ask. Is there anything definitive available on changing out complete
groupsets. I see some things but was hoping for something that
would include info on the tools needed to complete a project.
Randy... Read more >>
I'm having trouble trying to adjust my mountain bike to my girlfriend's size since she is 5,1 and I am 5,7 inches what can I do to make it where she can ride it and it's a 24x1.95 in set of tires... Read more >>
Hi everyone, I recently had someone vandalize my bike. Not sure if they were trying to steal it or not, but it did get damaged. I want to repair it myself, as I don't think it would be too complicated. Just wanted some help with the part names.
First, the part that keeps the handlebars on the bike is missing - any suggestions as to what that part is called and where I can find a suitable replacement?
Also, the cables to the gear shift was also damaged. The thumb shifter itself is in one piece, just the cables were damaged. I think the brake cables are also damaged. ... Read more >>
Hello everyone, i got a Specialized 27.5" Pitch Sport 2015 and i was looking to replace all the unsealed ball bearings on the bike with sealed bearings (cartridge type?) like on the wheels, bottom bracket, and head set. I'd like to get a quality bottom bracket, a quality head set, and quality sealed bearings for the wheels. The problem is, is that I don't know what to buy. I dont know if my head set is a threaded, tapered or whatever. Yes, im new to all this so im trying to learn, but thats why i know nothing, lol... I'd appreciate any help you guy's can give me. Thanks
Kevin... Read more >>