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My forks steerer tube is a little short. Is there any real world difference between using 50mm riser bars with a 5mm stack or using a 30mm riser with a 25mm stack?
All depends what angle you roll your bars. However, by your own admission, you don't have that option to go with more spacers.
I’ve not really experienced it myself. But the down side of bars with lots of rise is that if you rotate them to get the angle you want you also change the reach. So I’d go with lower rise bars
You can also get a bit more rise with a different stem.
Slam the stem and use a 50mm bar because the main difference is that it looks much cooler.
You can change the effective reach With bar roll so higher rise bars will allow for a bigger reach adjustment. Additional stack will always reduce effective reach. Fwiw I have a bike with a short steerer and I run a DMR defy stem and 70mm rise bars, it works well
10mm of spacers either a 63 head angle knocks 4mm off the reach.
higher rise bar doesn’t as the rise it perpendicular to the ground.
a higher bar feels like a longer stem as your hands move forward of the steerer axis.
How the steering feels (with a set head angle) is dependent on the distance the hands sit in front to of the steer tube axis.
anyhoo get a high bar. They are all the rage so fashionable aswell. You’ll learn to ride it.
Slam the stem and use a 50mm bar because the main difference is that it looks much cooler.
This! It looks cool and you'll feel like you're riding a big BMX 😀
Higher rise bars look cooler and like for like are more compliant.
The geometry stuff is complicated but you can’t change the reach and stack of the bike with anything above the headset, so any changes of grip position will affect the steering geometry but nothing else. And it doesn’t matter how the grips get to where they are, be it stem spacers, stem rise, bar rise, etc etc
50mm rise Odub's ordered.. Thanks!
Slammed stem / low rise bar used to be the epitome of cool. Now it's all about the 50mm+ riser bars. Go with the BMX flow.
The geometry stuff is complicated but you can’t change the reach and stack of the bike with anything above the headset, so any changes of grip position will affect the steering geometry but nothing else. And it doesn’t matter how the grips get to where they are, be it stem spacers, stem rise, bar rise, etc etc
Nope, adding spacers or a high rise stem is reducing reach and increasing stack.
n.b. check whether your stem is actually ....mm long, or whether it's offset .....mm perpendicular to the steerer tube.
How high rise bars interact with stem length is more tricky. Some people install them with the rise vertically, which effectively makes the 'stem' longer. The convention in BMX though has always been to install them inline with the steerer. I guess it depends on the bar.
This is right:
This is wrong, both aesthetically and ergonomically! :
it's all about the 50mm+ riser bars. Go with the BMX flow.
+1
I have seen the light with Stooge Moto bars.
There's "too high" where you can't get enough weight over the front wheel anymore, but within the envelope between that and too low that it's uncomfortable I think there's not all that much benefit to being slammed. The aerodynamic impact is marginal unless you're racing on smooth trails, and if you do need to get aero, you can still tuck in it's just less neutral that an old school-XC position was.
I've just swapped my renthal fatbar with 20mm rise to a one up cabon with 35mm rise and now i'm catnip to da laydeez.
YMMV