Questions tagged [bike-fit]

How to get the right sized bicycle for you or adjust your bicycle to fit you better.

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How to measure q-factor?

I was checking the specs of my crankset (Deore FC-M610) on Shimano's website and I saw that its q-factor was 176mm. I suppose this is the distance between your two feet when you are standing or ...
Ender's user avatar
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9 votes
2 answers
3k views

Is Lemond's saddle height method outdated?

Do you think Lemond's saddle height measurement method (which is taking the 0.883 of inseam measurement socked feet and use that to set the distance between the BB center and the top of the saddle) is ...
Ender's user avatar
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1 vote
0 answers
37 views

How do I select the right size Wabi

I would like to buy a Wabi Classic but I'm not sure if 49cm or 52cm will be a better fit. I have discussed this with support but I wanted to try a secondary source. I have a list of measurements that ...
Alex's user avatar
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4 votes
1 answer
126 views

How to decide crank arm length?

I'm 1.74 meter tall. I've two MTB's, one of them being 26" frame and the other one is 27,5". They both have crank sets with 175mm crank arm length. As a chondromalacia sufferer I wonder if ...
Ender's user avatar
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9 votes
6 answers
4k views

Why do people seem to choose "aero hoods" over "aero drops"?

It seems to be accepted that riding low on the hoods is more aerodynamic than riding in the drops. The explanation is that it puts the forearms parallel to the ground/ parallel to the direction of ...
Edward's user avatar
  • 372
0 votes
1 answer
60 views

Is a BMX 20.75 size frame a good fit for a 5'9-6'0 rider?

I am looking into buying a BMX bike but I don't know what size frame to get to fit me.
Andreas's user avatar
3 votes
2 answers
130 views

Retul bike fitting - for Frame Make and Size?

My question is about a retul bike fitting. It is my understanding that the retul fitting bike will help me determine the correct frame size and the rough dimensions I can use to build my bike. Will ...
Neil's user avatar
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0 votes
0 answers
77 views

Did I buy the wrong size hybrid bike?

I am a male who's 5'11" tall with an inseam of 32". Last summer I bought an Evo Grand Rapid 3 bike with an XL frame, 22"/56cm from a bike shop. I realized that the bike I bought is a ...
Jeff's user avatar
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2 votes
1 answer
57 views

Fitting a larger bike frame

I purchased a Lemond Zurich 2006 bike from CL. I am 5'7" with inseam of 29.5". The size of the bike was listed as 51 cm, but I later found that the size is 57 cm (suitable for 6'1"). I ...
curiousruby 's user avatar
4 votes
3 answers
2k views

Can a more aggressive geometry/set up be more fatiguing?

For context, I’ve been cycling on a cheap as chips second hand, effectively, “Walmart” type of bike for a couple of years. Not only was it my bike for general usage, I also used it for courier work. I’...
Ms21's user avatar
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6 votes
5 answers
900 views

Do increasing flexibility affect bike fit?

Lately I have been train to stretch, few weeks ago i even cant touch my toe. Before my stretch training, my roadbike feels good NO PAIN at all even for long ride. My position i bit upright, because i ...
Heykal's user avatar
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0 votes
2 answers
208 views

Advice on Sizing - Vitus

I am relatively new still to cycling in general, I bought a used large frame EMTB earlier this year which was great but clearly too large and I am now selling. I am looking to purchase a Vitus E-...
Chris's user avatar
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4 votes
3 answers
487 views

Can a bike fit compensate for 10-30mm deviations in reach and stack from a known, comfortable bike?

I find the Trek FX Sport 4 to be comfortable but much less fun to ride than the Specialized Sirrus 4! Unfortunately, on the Sirrus I feel like I'm arching my back and want to reach further forward. ...
Peachy's user avatar
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8 votes
5 answers
5k views

I inherited a new bike; when I coast my leg shakes and that thigh burns. What is going on?

My mom bought a brand-new Fuji road bike a few years ago - but because she only used it a couple times, she's now given it to me (female, 31). She's a few inches taller, so I adjusted the seat level ...
Alison's user avatar
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2 votes
1 answer
281 views

Can I add headset spacers below an adjustable stem?

Can I add headset spacers below an adjustable stem, specifically the Promax A-headset stem on the Cannondale Adventure 1? I want to change the stock handlebar to something with more sweep, but most ...
Peachy's user avatar
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4 votes
1 answer
134 views

Which geometry specifications determine the seating position of an MTB?

MTB manufacturers release geometry data for their bikes. If I want to know if a bike has a more upright or stretched position, which geometry data do I have to compare?
JohnnyFromBF's user avatar
5 votes
4 answers
2k views

Saddle fore-aft compensation in relation to crank length change

I've found a few questions which answer the question of saddle height changes in relation to a change in crank length, however I haven't found any questions relating to compensatory changes in fore-...
BE77Y's user avatar
  • 319
6 votes
1 answer
158 views

Help me choose a new bicycle size having different geometry

My current bicycle is Triban RC 500 size L (56): https://www.decathlon.co.uk/p/road-bike-triban-rc-500-disc-brake/_/R-p-308097 My hight is 185cm by leg inseam is 90cm. I am looking to buy Bianchi ...
Steve's user avatar
  • 161
7 votes
2 answers
1k views

Struggling to get comfortable on bike

I have been fitted on different bikes many years ago and was never completely satisfied to the point that I am not moving around in the saddle. I have since gotten a different bike with slightly ...
John Doe's user avatar
  • 157
7 votes
3 answers
2k views

Should saddle height be changed in relation to different crank arm lengths?

I have two mountain bikes, one of them is 26" with a 170 mm crank arm length and the other one is 27.5" with 175 mm crank arm length. I've adjusted the saddle heights of the two bikes as ...
Ender's user avatar
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7 votes
3 answers
1k views

Does it really matter if my stem doesn’t block the hub?

6’3” tall Bianchi via nirone c2c Alu carb 2010 bike. I got hit by a car and am just rebuilding this bike so I can ride (the other one was totaled). The 120mm stem on it made the steering very skittish....
Bigonabianchi's user avatar
16 votes
8 answers
2k views

Is a dropper post a good solution for sharing a bike between two riders?

We have an e-bike with a step-through frame that's shared between two riders with fairly different heights (5'8" and 6'2"). It's used for commuting, kid-toting, and general short-mileage ...
segfault's user avatar
  • 161
4 votes
1 answer
143 views

Numbness - Is my bike fit ok?

I have been enjoying road cycling for a couple of seasons now, but I have yet to find a good solution for the perineum numbness I am experiencing. By shifting around and standing up I can somewhat ...
Magzz's user avatar
  • 141
3 votes
1 answer
1k views

Is it possible to compensate a small frame size with a long stem and high saddle height?

I'm 174 cm (5 feet 8½ inches). Major bicycle manufacturers recommend a medium or medium to large frame size MTB's with an effective top tube length of 59-62 cm for my height. However my bike (a 26&...
Ender's user avatar
  • 1,950
3 votes
2 answers
843 views

Can large bike size will be solved by replacing the crank arm with a longer length?

I recently bought a carbon fiber bike and the size is a bit big, it's sava phantom3.0 56cm ,but I love the bike and don't want to wait too long for small size bike, would a longer crank arm be a good ...
Alexander Gary's user avatar
2 votes
2 answers
682 views

Aftermarket options for adjusting Giant Aero Bars angle

I have this Giant 2016 Trinity Pro that I'm trying to make some adjustments to. Currently the stock aero bars stick almost straight out and I'm not super happy with that position. I've really liked ...
blackbrandt's user avatar
2 votes
3 answers
203 views

Riding out of the saddle and bike size

When I try to ride out off the saddle on my MTB I can't ride more that few pedal strokes. It feels like my body weight is not centered (more on the front side). Does it mean that my bike is small for ...
Ender's user avatar
  • 1,950
2 votes
1 answer
2k views

Does my gravel bike fit me?

Hi does this bike fit me? Im 5’7 (1.7 m) with a 31 in (79 cm) inseam on a size medium
Niall Carlyle-Reid's user avatar
16 votes
10 answers
5k views

I am trying to find a trailer for a disabled adult

My sister is disabled and she wanted me to try to find something I could use to pull her behind me when I go for a bike ride....I might have to look at an electric bike to be able to do that...but I ...
JoAnn Roberts's user avatar
3 votes
3 answers
1k views

Should one's bum be behind, or merely over, the lowered saddle on steeper descents?

Where exactly does your bum go on steeper descents? You lower the saddle (by all of the 120-150 mm it will go); and you pull as much of your weight as far back and as low as you can go to decrease the ...
Sam7919's user avatar
  • 9,122
8 votes
1 answer
1k views

Cycling jargon: "relaxed geometry", "slack geometry", and "aggressive geometry"

In one sentence… What is the meaning (and for which parts), the implications, and, if possible, the etymology of these three terms? In more words… When I hear this bike has more aggressive geometry ...
Sam7919's user avatar
  • 9,122
5 votes
3 answers
538 views

Can I think of bike fit purely as bike ergonomics, or is there a distinct or an additional aspect to the choice?

I used to take a simplistic view of choosing a frame size. It boiled down to choosing the largest frame that gives me sufficient top-bar clearance. On both road and MTB bikes, I can ride long ...
Sam7919's user avatar
  • 9,122
2 votes
1 answer
88 views

Handlebar measurement causes pain

My handlebar size is 40mm. However I tried the a 42mm bar and it was comfortable but the reach is too long. So I changed the bar from 42mm/95mm reach w/80mm stem to a 40mm/75mm reach w/80mm stem. I ...
GrendizeR's user avatar
0 votes
3 answers
454 views

Are they called handlebar "upsweep" and "backsweep" because only one quadrant is usable?

The title says it all. Are the two rotations of MTB flat bars (question updated in italics) called "upsweep" and "backsweep" because only one quadrant is usable? Is there never a ...
Sam7919's user avatar
  • 9,122
2 votes
1 answer
115 views

Specs to take into account when changing frame on Enduro MTB

The frame of my Enduro MTB is cracked and needs changing. The bike is 10 years old so I will look for a second hand frame and I'd like to be able to use as many of my current parts as possible. What ...
NicoH's user avatar
  • 123
3 votes
1 answer
323 views

Adaptative Pedal or crank for a handicap user

I encountered a person with a disability in one leg. They are unable to control their ankle/heel movement. They are unable to maintain their foot parallel to the floor at the top of the pedal stroke (...
Daniel Perez's user avatar
7 votes
4 answers
2k views

Bike measurements for a short stubby guy

I have short legs and a 27 inch/68.5cm inseam. I am 5'6"/1.68 m tall, and I am looking to get back into exercising. I was wondering what bike measurements for a road bike I would be looking for ...
BigWilly's user avatar
3 votes
1 answer
187 views

Giant TCR advanced ( 2016 ) Carbon Seatpost

I have been considering making a foray into road bikes and ended up picking up a pretty pristine Giant TCR advanced 2016 bike for a bargain. I bought a size M and ended up figuring out that I actually ...
Swayam Siddha's user avatar
8 votes
1 answer
1k views

Do smaller riders tend to need a wider saddle?

I was looking at Trek's website and noticed that on some of their bikes they spec a wider saddle for small sizes. This is on one of the 2021 Checkpoints. Is this a general rule of thumb, that shorter ...
bitmaker's user avatar
  • 138
6 votes
1 answer
832 views

My arms hurt when riding

My lower back bends a lot and the weight goes to my arm. What is the problem?
ice man's user avatar
  • 383
10 votes
6 answers
3k views

Tradeoffs of larger/smaller bicycle sizes

Due to the supply chain issues of the past couple of years, it has become difficult to find the ideal bicycle locally. More and more people consider purchasing online, which means that they cannot try ...
DailyRider's user avatar
4 votes
4 answers
1k views

How should clip on aerobars be adjusted to the user?

The context here is an endurance setup, with a fit optimised for the hoods/drops. Clip-on aerobars are being fitted to give an additional hand position especially into sustained headwinds; this very ...
Chris H's user avatar
  • 59k
11 votes
3 answers
2k views

Does a bike fit "carry over" from one bike to another?

If I would pay for a professional bike fit right now for a road bike, and I get a new road bike after a while, can I somehow translate the fit from my current bike to the new one (either by myself, or ...
Saaru Lindestøkke's user avatar
6 votes
2 answers
1k views

Do I have the right Orbea Orca Aero 2022 frame size?

I have recently bought an Orbea Orca Aero 2022. After a visit to a bike fitter, he recommended that I get a 53cm frame with a 90mm stem and 172.5mm cranks. However, after receiving the bike, my first ...
Aidas's user avatar
  • 61
4 votes
5 answers
2k views

How to choose frame size as a non-flexible person?

I've been commuting regularly to work during the last four years and I would like to get a road bike to replace my old city bike and enjoy some cycling on the weekends. I've been looking which bike ...
S -'s user avatar
  • 145
1 vote
1 answer
198 views

Does a smaller than recommended frame size cause problems?

What problems, if any, should I expect from an undersized frame, and how small would the frame have to be before these issues occur? For the sake of the question please assume an older steel diamond-...
Loralrose's user avatar
0 votes
0 answers
44 views

question is can I put 27.5 rims/tires in place of the 29ers [duplicate]

I currently have a motobecane 29er, and it is to tall and beyond time i can exchance it, question is can I put 27.5 rims/tires in place of the 29ers
JASON LEVAR's user avatar
4 votes
2 answers
1k views

How do I determine a suitable handlebar width on a fatbike?

Fatbike owners seem to be fond of using lavishly wide handlebars. They also don't just go from 640mm or 660mm to 680mm or 700mm, but often to 720mm or 740mm. I'm assuming their shoulders couldn't be ...
Sam7919's user avatar
  • 9,122
-3 votes
5 answers
394 views

Would a Rockefeller custom-build a frame? (If money were no object, is a custom frame always preferable to stock)

Even more briefly Suppose you're a Rockefeller. In other words, money means nothing to you, and a 100K-250K bill is an insignificant expense. You select a bike model and find you are between two frame ...
Sam7919's user avatar
  • 9,122
1 vote
1 answer
918 views

Making bigger steel frame smaller

i bought old Peugeot carbolite 103. With size 60cm which is very big for me, so I have an idea to cut it to 50cm. Do you think it's worth it and the risks? Edit: Guys thanks for the fastest ...
Ki Rov's user avatar
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