Stem measurement

DMan

alid sinistra oliva
I've always measured a stem from the center of the steerer to the center of the bar. This is supposed to be a 70mm but to me it's a 65mm. The mark is 70? Am I measuring wrong?

377882
 

DMan

alid sinistra oliva
Face plate may not be in that position with bar installed
That's true. To the center of the bar would 67-68mm. My Raceface comes as a 60mm and measured the same way as I measured this, is 60mm. It's not a deal breaker, just curious if stems are actually measured differently.
 

The Dude

Likes Dirt
I thought it was centre of bar to centre of steerer - might be a bit different with a 17degree oldy, but should be close
 

The Duckmeister

Has stumpy thumbs, Speciaized are so weird
Measure centre-to-centre, but along the side of the stem, not the top. The rise (or dip) angle can give false length readings; the greater the angle, the worse the reading.
 

ozzybmx

Níl aon tóin tinn mar do thóin tinn féin
please check in at the fuckwits thread
Stems and fuckwits.

Transition chunts changed the spec without changing the website spec when I bought my Spur.

Suppose I could have read the markings on the stem :rolleyes:

Ordered a 77Designz at 45mm thinking it would be 5mm longer as the other option was 35mm and while it would have been ok, I decided on the longer 45mm. Ends up the stem on the bike was actually 50mm, not the originally advertised 40mm.
So the new stem is 5mm shorter... but I cant feel any difference. Though probably would have done at 35mm = being 15mm shorter.

Spec now changed.

377915
 

DMan

alid sinistra oliva
Stems and fuckwits.

Transition chunts changed the spec without changing the website spec when I bought my Spur.

Suppose I could have read the markings on the stem :rolleyes:

Ordered a 77Designz at 45mm thinking it would be 5mm longer as the other option was 35mm and while it would have been ok, I decided on the longer 45mm. Ends up the stem on the bike was actually 50mm, not the originally advertised 40mm.
So the new stem is 5mm shorter... but I cant feel any difference. Though probably would have done at 35mm = being 15mm shorter.

Spec now changed.

View attachment 377915
Yes, (sigh) have done that too. Ordered a new stem for the previous bike in a 50mm as I was SURE the current stem was 40mm. Sadly it was 50mm. I must have changed it at some point earlier...
 

DMan

alid sinistra oliva
Measure centre-to-centre, but along the side of the stem, not the top. The rise (or dip) angle can give false length readings; the greater the angle, the worse the reading.
I can understand that. Like I said, all my stems are the same angle and I've measured the same way. But I'll measure side as as that might just be the difference.
 
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