[StunZeeD]

So I just put together a new M9, coming from a 951 I was surprised the head Tube was much shorter on the M9. I am wondering if I should keep my original bar height of the 951 which would have me put another 10mm spacer under the top crown of my 40.

The M9 is somewhat of a different bike so I am curious if I should try the lower bar height, this would require me to lower the top crown of my 40 10mm of course which I do not believe to be an issue

 

[norbar]

I'd keep the old bar height and use a spacer. I went the non spacer way and felt akward with my bars being really low. The bike felt shorter. Used some spacers and it's much better with neutral bar height.

 

[alpine slug]

I don't understand why you don't just try it both ways, and decide for yourself.

 

[kidwoo]

Bar height depends on SO many different things........bb height (your baseline body position), headangle and reach (how much you want/need to weight the front of the bike), change in angles from differences in front and rear tires, suspension setup and whether there's a foreward or rearward bias in how the bike sags on the trail........

Just go ride it with whatever you have and figure out if you want to change it.

 

[StunZeeD]

Bar height depends on SO many different things........bb height (your baseline body position), headangle and reach (how much you want/need to weight the front of the bike), change in angles from differences in front and rear tires, suspension setup and whether there's a foreward or rearward bias in how the bike sags on the trail........

Just go ride it with whatever you have and figure out if you want to change it.

I hear ya, the geo on the m9 is very similar to the 951, although the BB is about 1/2 higher then 951 which I am not sure how it will be since its a longer travel bike where I may be sitting into the suspension more

I was just trying to get some feedback as I am testing it out at stevens pass this weekend so wanted to go as dialed as possible

 

[kidwoo]

Sagged bb height from the ground isn't really what I meant. I guess I should have said BB 'position' relative to the headtube. Either way, you're not going to know until you just get out on the bike.