how to measure a stem?

ianbar

i am not sure how to measure the stem? i don't know what size the one is on currently and could do with one a little longer. i assume you measure "middle length" between handlebars and headset?

themekon

Stems are measured centre to centre.

g00se

You measure from the centre of the handlebars to the centre of the steerer along the centre length of the stem.

The "extension" length on this diagram:

team47b

Stem length is measured from the centre of the headset to the centre of the bars. Sorry no fancy diagram to hand.

ianbar

thank you, good job i asked! turns out mine is currently 110mm so looking at 120mm, cheers!

houndlegs

Have a look on planet x,they had them for a tenner not so long back

NITR8s

I am bit confused about the diagram and how to determine the length of my stem, It meseaures 100mm from center of headset to center of bar but has a 7 degrees rise up . Could some one explain what the length of my stem is taking into account the 7 degree rise?

rolf_f

NITR8s wrote:

I am bit confused about the diagram and how to determine the length of my stem, It meseaures 100mm from center of headset to center of bar but has a 7 degrees rise up . Could some one explain what the length of my stem is taking into account the 7 degree rise?

100mm

The reach will be slightly less than that but for a 7 degree rise not much less - 98.5mm

NITR8s

Thanks