Hi!
I have issues with my Magene P515 and the lightcarbon bb. When installing the crankset first, i head a gap/play to the bb. I installed it with 1-1.5mm (not sure anymore) spacers afterwards and the play was gone. Everything ist tight and runs smooth.
But when going for my first ride, i noticed a creaking, rattling noise on the left side crank when applying higher power (>300W approx) to the left pedal.
Has anyone experience with Magene P515? could it be the BB of the left side is not installed perfectly or is it maybe the preload of the crank arm that is too tight or loose?

Thanks guys :-)

Hi all again,
i still cant fix the issue.
I reinstalled crankset AND bb multiple times, using alot of grease and the correct torque. i also used spacers to eliminate play in the bb. Everything runs smovely and without any noise, when using the small chainring. But when using the big chainring and applying force the left pedal, there are these weird noises. I can rule out the chainring and pedals too, because i also reinstalled them and on the small chainring everything is perfect.
A lot of research let me come to the conclusion, that the BB does seem to not be able to handle the torque/torsion of the crank spindle when using left pedal with big power and using the big chainring.
Has anyone any experiences like this? What else can I try besides buying a new bearing?

I think 300NM is a bit too much I guess you meant 30NM hahaha

I know it's a fairly common problem, try following the instructions backwards and trying to install the crankset again. If there's excessive movement, it's never a good sign, and I don't think it's related to the BB.

Try asking Magene himself instead. If you email the seller, they'll get back to you without any problems https://it.aliexpress.com/item/1005005506880823.html

Haha ofc i meant >300W. Thanks for your reply!

Hello, just to be sure, the order of tightening the screws on the cockpit: expander plug -> top cap -> handlebar pinch bolts.
I made the rookie mistake of tightening the pinch bolts first and then the expander plug / top cap. So tightening the top cap in the end always pulls the expander plug out since the handlebar can't move.

Hi, valid question!
I am aware of the correct order and made sure the handlebar bolts were extra loose when tightening the top cap. So i am pretty sure i did the assembling in the right order and also repeated it multiple times to make sure.
But anyway thanks for the advise, mabye helping someone else.

Hi guys,
I just finished my new build but am experiencing play in the headset unfortunately. I am sure this was addressed some times earlier here but I did not find a proper solution anyway and hope you can help me.
I am using the bearings from light carbon but the following stem spacers and top cap.: https://a.aliexpress.com/_EuoqYTG

But if I tighten the top cap slightly (like normal) I have significant play back and forth in the headset.
The play disappears only if I thighten the top cap >2.5 NM. This makes no sense and also the steering I not rideable stiff.
I double checked the mounting direction of the bearings, they are correct.
The angle of the cut of the fork is not ideal. See attached pictures. Could this be the problem bc the compression plug is not at the right angle if thightend?
Do you have any other ideas what I could try?
Also when mounting everthing multiple times the compression plug became loose it seemed, this seemed also strange to me.

Thanks alot in advance.