Saw this mark on my crank arm and it’s a mark where i can’t feel anything if i wipe my hand across it. It kinda look like a scratch at first but it feels smooth so just want to ask if anyone has similar situation before who can explain to me what this it?
Also for the other question it’s regarding the white-glue looking substance on the screw which screw the disc wheel to the bike. why is there a white looking thing there? It is also the same situation for the front tyre. just got this bike so need some help.
by hehehhahahh
10 Comments
The crank has heel hub, normal marks from use as the rider’s shoe polishes the arm. The white stuff is probably grease, taste it and let us know
Thats from rubbing against shoes/pants repeatedly.
The white stuff is probably anti-seize
1. Is your foot rubbing on the crank when you pedal?
2. This is grease. It’s normal. You can wipe it off if there’s too much.
It is your shoe touching the crank arm and the white stuff is just grease
Normal
The paint on the crank has been nicked. With 99% certainty, I can say that it has no negative impact on the structure of the crank.
I don’t think that there’s any official touch-up paint and I honestly wouldn’t bother. Bikes are meant to be used and while scratches hurt, this feeling will go away very fast.
Thru-axles should be greased at the thread where they engage into the frame and the fork. Otherwise, they could be very difficult to remove in the future and you definitely want them to be able to be removed even if you currently see no need for that. As soon as you get a puncture in the tire for example.
I do have to say that there seems to be an excessive amount of grease that will only attract dirt and because grease there specifically doesn’t really do anything.
Get pedals with a longer shaft
Looks like your shoe’s rubbing on d crank arm _ like sanding with 600 grit sandpaper. Smooth but still an abrasion
The “screw” is your rear axle and it holds the wheel and the frame together. Also, front wheel not “tyre”
The abrasion on the crankarm is from your feet rubbing against it. Pretty normal. It could maybe indicate a bike fit issue.
If you are putting on new pedals, remember that the left pedal (non-drive side) has a *left handed* thread, i.e. it screws in counter-clockwise. The pedals are marked left and right (sometimes there is only a ring or groove on the left one), they are not identical.