Compendium of Internet Fit Advice

^ well close enough for government work bro

[quote=dougganita]i also have huge feet—and more to the point—really long toes
i tend to slam the cleats as far back as they go on just about every shoe
b/c i pedal heel-flat at the bottom of pedal stroke

bam, 78cm saddle height[/quote]
This.

Notrly. Concor vs Arione. When dealing with saddle position one should measure from the widest point on the saddle though not many people are doing that at this point.

We use those overpriced serotta x/y tools to measure the handlebar and saddle distance from bottom bracket. Its an overpriced 2 way level/yard stick with the measurements printed on the wrong side.

Notrly. Concor vs Arione. When dealing with saddle position one should measure from the widest point on the saddle though not many people are doing that at this point.[/quote]

Even that doesn’t work really well. I’d like a “middle of the rails” measurement or maybe have every saddle ship with a decal on it that outlines where the ischial tuberosity would normally contact the saddle.

lol
or just put the same saddle on yr multiple bikes
and measure to the tip

theres one of those on ebay right now

[quote=cookietruck]lol
or just put the same saddle on yr multiple bikes
and measure to the tip[/quote]

That. My MTB has a different saddle but IDGAF coz MTB.

This pedal spacer thing confuses me greatly and is one of those things that I would never know how to look or check for. I love that it’s a thing and it works, I just know nothing about it and don’t think it’s a thing I’d know how to eyeball.[/quote]

At my shop we don’t use lasers in bike fits. Everything is done manually. But we keep a laser level (so sort of a laser, just not lasers in the computer software bike fit sort of way) and this is pretty easy to check for. Just use the laser level on vertical and check their stance. if their knees are flaring out with every pedal stroke, the stance is wide and needs to be accommodated down at the pedals with some pedal washers.
If you were checking yourself, you just need a mirror in front of you while you ride the trainer.

My stance is narrow on the bike, but I have one foot that i angle kinda weird so my ankle rubs the crank if i don’t space out the pedal.[/quote]

I think this is basically what happened - the dude put dots on my knee and set up some laser levels that projected lines on my body. My hips were so wide that on my road bike, with Shimano road pedals, my feet were narrower than my hip bones and I was pigeon-towing and doing weird leg things while pedaling.

He recommended Speedplays due to the custom width thing, but I don’t like having a big box on the bottom of my shoe, so I switched to ATACs and looked into spacers - and it turns out I just had to add the biggest spacer made and it fit perfectly. Eggbeaters on my MTB worked out OK because they’re so wide, but those suck, so I did the spacer/ATAC route there too.

I really am kind of a freak for a cyclist, so my case is probably a bit odd, but no other fitting had captured that stuff so I’m a bit leery of having any bike shop ‘fit’ me unless they have some rigor of taking measurements and using mirrors / levels to get some external validation beyond some knowledgeable dude saying ‘OK, looks good’ and giving a thumbs-up.

Speaking of bad knee tracking, I run on Los Gatos Creek Trail, which Snowman is probably familiar with. It’s a MUP that runs all through large chunk of the south bay and has a lot of cyclists on it. Almost every time I’m out I see some dumb fucker on a road bike with his knees flying out about 6 or so inches out of plane with the pedal rotation. Every time I see it I’m tempted to yell out, “fix your fucking fit, you dumbass.”

If your knees ain’t tracking right, fix it.

See that all the time. Usually paired with choad stems pointing towards the heavens.

knees tracking out can severely damage your knees.
If they don’t fix their fit their blown out knees will fix it for them by forcing them to see a fit/physiotherapist.

enough time on a bike and theyll figure it out
your body wants to move a certain way
especially under power
beautiful pedaling is being mindful of your form
while >100%ftp
its hard

i have one knee that tracks out a little more than the other. i also have one leg thats a little shorter than the other, same leg has a foot that is 1 euro size smaller. this is a pelvis issue and i’ve got my chiropractor onnit.

well, everybody has that
so don’t dwell on it

I need to get my cleat situation sorted. Haven’t really been riding enough for it to bug me significantly, but I know it’s not good.

seth i did a pedal stoke analysis awhile back and it was enlightening
it’s the one gizmo-lazer thing i’ll back
having a pro look at video of you over various power outputs and seeing how your knees track
and give you some feedback on how to best work with your morphology
very valuable, saves on injuries (which is usually the major setback to my fitness)
especially if you wanna do this bike racing thing in the long term
which i very much do

Hi all

Can someone repost the article and/or gif that illustrates how shitty small 700c bikes are at fitting small people?

How did you determine what length cranks to use? Did you just make an assumption? Take someones word for it? Trial and error? What’s the best way to determine this?

I have a 30in inseam and am using 175 cranks. I know people with longer legs than mine using shorter cranks. Then there are praying mantis dudes like Fred who wants longer cranks. It all seems pretty random.

shorter cranks will make your ass want to be further back

there are formulas and shit from people selling custom cranks, but really that comes into play more if you are tiny or hueg