- Cracked stem.
I had a thomson stem that started to go in exactly the same way yours has but I noticed mine when it was just hairline cracks at each side.
time for a new one – http://www.i-ride.co.uk/Thomson-SM-H007-X4-Stem-FaceplateClamp-318mm.aspxPosted 4 years agoandylMember
Thomson regard face plates as consumables that should be replaced eventually and I agree with that and like the way they don’t charge the earth for replacements. It’s a shame other makes don’t but then Thomson stems are a bit unique in that other designs come and go but thomsons stay popular and hold their price. I’m not convinced on CNC over forging for stems but cracks are rare and i’m sure they know what they are doing. They only charge something like £6.99 for a new faceplate anyway which reflects there attitude that they should be replaced.
Could have been done up to tight or unevenly but another reason could be your bar diameter is slightly out of tolerance. And yes the dirtiness of the crack face on the right of the picture suggests it’s been cracked a while.
I’d just buy a new faceplate and be thankful it didn’t completely fail on a downhill bit leaving you flying forward holding the bars.Posted 4 years agolegendMember
PJay – Member
The tightening torque for Thomson x4 faceplate bolts is just 4Nm which is surprisingly little and easily exceeded. I’ve seen images of Thomson seatposts snapping just below the head due to overtightened bolts; Thomson kit isn’t indestructible.
Probably is if you use the right torques then 😉Posted 4 years agoNorthwindSubscriber
FWIW I had an Elite stem for a little while, it didn’t hold the bars with only the recommended setting, they never ended a ride pointing in the same direction they started (on an Easton alu bar I think so quite smooth in the middle, but still) It was too long for me anyway so I replaced it with a much less pretty, but lighter and cheaper, Pro stem which asked fortwice as much torque and is still going strong.Posted 4 years ago
The topic ‘Cracked stem.’ is closed to new replies.