Pearl
THIS CHANGES EVERYTHING
What is Gordon Wadsworth’s setup? Just do that and you’ll be fine
Cockpit geometry?
- Thread starter Dave Taylor
- Start date
Exactly. But then again, the steep seat tube with no-setback seatposts etc is supposed to have you kind of forward and yadda yadda, I don't know what it all means to classic bike fitment anymore.
But yeah, if it works on the Pivot, carry it over exactly to the other bike and work from there. There's some many differences that you can't just go by spacer distance. Fork Axle-To-Crown, suspension sag, head-tube length, fork angle, etc etc.
Actually, in trying to translate what Dave was saying, I'm pretty sure he said:
"I had a 100mm fork, I put on a 120mm fork. I found that, surprisingly on this fork that's 20mm longer and will put the front end higher, I had to use less spacers to get my handlebar in the same height as before. "
Steve Vai
Endurance Guy: Tolerates most of us.
Changing a spacer is exactly the same as swapping to a riser. Your body will be in the same spot and have the same effect on handling.
Dave Taylor
Rex kwan Do
Really? Thinking technically with a riser bar hand position goes straight up. With moving a spacer under bars go up and back.
Dave Taylor
Rex kwan Do
He gets it!
Steve Vai
Endurance Guy: Tolerates most of us.
But your body position ends up in the same spot, which is what effects the handling. I have an XY tool at the shop if you want to see how exactly the same it is.
Dave Taylor
Rex kwan Do
Doesn’t the stem technically move rearwards slightly as it climbs of the steer tube? Not a huge measurement but any small adjustments in the area are noticeable.
Steve Vai
Endurance Guy: Tolerates most of us.
You'd have to raise it a lot for that to come out in a measurement. But yes, if you had a foot of steerer it would. Seriously, we can do this all with a tool and you'll know exactly what you need to do.
Dave Taylor
Rex kwan Do
I’ll try to stop in with both bikes soon.
Dave Taylor
Rex kwan Do
My bad, was actually a 12mm spacer. But still, moving stem back 4mm or more changes bar over axle position.
IDK, I am not going to try and math it out like @Patrick but it always felt better on the mtb the closer you can get to being slammed with the stem and run a riser bar. Especially for things like cornering. Mind you we are ignoring sweep and rise that riser bars typically have compared to the average flat bar.
So i'm rethinking "actual" vs "effective" -
reducing strain on your lower back (or reducing weight on the bars) means being more upright -
assuming your bars are below the pivot point of your body (there is not 1 pivot point)
moving straight up would decrease reach and bend angle, if it is above, it actually increases reach, but offset by reduction in angle. interesting.
it also messes with effective stem length (if that is a thing? virtual center of bars to center of steerer?)
so much for academic look - it probably isn't worth a dime until you try it out, and see what works. like those compliant bars that give a little
in the vertical.
reducing strain on your lower back (or reducing weight on the bars) means being more upright -
assuming your bars are below the pivot point of your body (there is not 1 pivot point)
moving straight up would decrease reach and bend angle, if it is above, it actually increases reach, but offset by reduction in angle. interesting.
it also messes with effective stem length (if that is a thing? virtual center of bars to center of steerer?)
so much for academic look - it probably isn't worth a dime until you try it out, and see what works. like those compliant bars that give a little
in the vertical.
NO.
Holy aero when in the drops.Briefly reviews Pat's EVO setup
Dave Taylor
Rex kwan Do
That’s why my back was locking up every other week lol.Briefly reviews Pat's EVO setup