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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13 views

Alternatives to shorter cranks for knee pain

I've recently developed pain at the front of my knees when cycling. I suspect this is caused by, or at least made worse by, my bike having cranks that are too long for my leg length (172.5mm cranks ...
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1answer
347 views

Balance bike: fitting smaller wheels

I'm building a balance bike for a daycare kid. He is tall so I have a longer frame for him, but I think the tires might he too big. Can I put 12.5" tires on forks for 16" tires?
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51 views

Bugging out on bike fit frame size

I recently upgraded to a new bike (Tarmac 2019) and got a size 58. I also got a bike fit by a local fitter. When we finished the fit there were a few tweaks including moving the saddle up several cm (...
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5answers
3k views

Adding gears to my grandson's 12" bike

My grandson has the kind of bike you pedal backwards to brake, and he goes riding with me on my days off. Yesterday, he asked me if we can convert his bike because we have looked everywhere and no ...
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1answer
50 views

Replacing broken road fork with same model but shorter steerer tube. What can I expect for handling issues?

My road bike is an '05 Trek 1000 54 cm frame size. The Bontrager carbon fork (Satellite Plus) was destroyed in a non riding accident. I have found on eBay a replacement fork--same model , identical ...
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52 views

How many degrees does the stem of a Canyon integrated cockpit rise?

I am plotting a Canyon Ultimate bike on BikeCad, but I can't find how many degrees the stem rises. The stem is part of the Canyon H36 integrated cockpit. In general, manifacturers of integrated-stem ...
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1answer
57 views

Mountain Bike has 26 x 2.125 Tires on, Can I Fit 26 x 1.95? [duplicate]

My mountain bike has 26 x 2.125 tires on it and I am ordering new 26 x 1.95 tires. Will these be okay to use? What issue might this cause? Or will the difference be negligible?
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1answer
99 views

Can moving cycling cleats forward be a good way to train our calf muscles?

A good bike fit is known to increase power transfer and endurance because it balances our muscle groups. Interestingly, bike fitters often recommend moving the cleats back to put less load on our ...
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2answers
67 views

Would longer axle to crown be ok?

I have a Trek 820 2014 26 inch for which I had the lbs convert to rigid fork. The original suspension fork was a suntour m3030 which the manufacturer states has a 63mm travel for my bike size. I lost ...
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1answer
38 views

Bike Fit for 5'3" woman, 47 or 51 cm?

My issue is that I have a 51 cm Cervelo, but the reach is too far. I've tried changing out handlebar stem to shorter/angeled, spacers and smaller handlebars. That helped some, but still a little too ...
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1answer
110 views

How should a bicycle fit? [closed]

What are the characteristic features of a bicycle well-fitted to its rider? Are there a standard set of "rider positions" that we talk about in bicyle ergonomics? What are the standard tolerances ...
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1answer
89 views

Is a 22 inch road bike appropriate for a 5'9" person? [closed]

I am admittedly a beginner and looking to purchase a used single speed bike just to casually use around the neighborhood. I came across this listing: https://nashville.craigslist.org/bik/d/...
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3answers
330 views

Bike fit: Adjusting stem angle vs. height

I'm playing with my fit a bit as I have gotten much more flexible since I had a bike fit 2 years ago (+1 to stretching and foam rolling.) As I'm experimenting with drop I am wondering if it makes ...
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1answer
247 views

Bike size advice Bianchi vs Cannondale

I have been after a Bianchi Via Nirone 7 for more than one month and an half without much success. The main reason is that they don't produce many 47cm frames, while 47cm would be my optimal size. In ...
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3answers
133 views

Anything wrong with using MTB saddle on hybrid bike

I'm been having problems with fit on my hybrid. When I spend around 1hr on the saddle I start to get pain in the left prostate. I can no longer ignore the problem because I plan to do C2C. Right now ...
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1answer
164 views

Since seat tube angle has little effect on max power output, why not adjust the reach with saddle setback?

According to this article, a seat tube angle between 65 and 110° has little effect on max power output. At most, it varied 1%. https://www.me.utexas.edu/~neptune/Papers/jab26%284%29.pdf Adjusting the ...
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4answers
88 views

Fitting question for first trekking bike - differences in stack and reach

I understand this might be a pointless/dumb question, but as an bike freshman, I am confused: Trying to select an entry level first bike (cross/hybrid) and so far I'm between two of them (local EU ...
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2answers
94 views

New bike but no idea on inner tube size

I bought a new bike a few days ago, Cannondale Bad Boy 3 2019 which gets delivered in a few days. https://www.cannondale.com/en/Europe/Bike/ProductDetail?Id=7f48452b-f9eb-4e10-89e7-4a7550944bfa ...
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2answers
149 views

What is the proper placement of the feet on the pedals when viewed from the top?

When placing my feet on the pedals with the balls on it, the outer part doesn't fit the pedal anymore. If I moved the foot backwards, the pinky would not be on the pedal anymore. I wonder if that is ...
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2answers
121 views

Can wearing padded cycling shorts versus regular shorts affect the adjustments during a bike fit?

Can wearing padded cycling shorts versus regular shorts affect the adjustments during a bike fit? My bike fitter who uses the Retul system requires tight fitting shorts so that the LED markers don't ...
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1answer
94 views

Bike sizing question - are these two sizes actually that different?

Could use some advice on bike sizing. I'm in the market for a new commuter and after a lot of research I ended up picking this one: https://www.bergamont.com/gb/en/product/bergamont-vitess-n8-belt-...
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2answers
126 views

Long stem influence on cyclocross handling

I want to introduce myself to the cyclocross world, I'm looking for my first bicycle. I found a great used bike with a frame at size 54 (54 seat tube x 54,5 top tube), which would be slightly small ...
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2answers
878 views

Large vs small stack & reach

I'm looking at getting a new bike, but struggling with the most suitable one given the different geometries. Given a particular torso angle, is there an optimal stack & reach? A large S&R ...
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2answers
153 views

Can I setup my road bike, mountain bike, and fat bike with the same set of shoes with MTB SPD cleats?

Can I setup my road bike, mountain bike, and fat bike with the same set of MTB SPD cleats? Basically I have 3 bikes with VERY different cranksets and Q-factors that range from 148mm to 164mm to ...
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3answers
151 views

How much can we change our bike wheel diameters before needing another bike fit?

How much can we change our bike wheel diameters before needing another bike fit? If we change the size of our bike tires, it raises or lowers the front or rear of the bike. That means it can affect ...
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7answers
2k views

Why do I have to keep on changing my fit?

I realize there may not be a true "answer" to this, and some of what I have to say makes no sense, but since I'm not exactly the brightest tool in the refrigerator, it may just be that there is ...
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0answers
103 views

How do you optimize the recruitment of our glutes when using a more upright bike?

How do you optimize the recruitment of our glutes when using a more upright bike? According to an answer for a previous question, rolling the hips forward slightly makes the glutes easier to recruit ...
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5answers
637 views

Can a hybrid bike's stem be slammed to make it nearly as fast and powerful as a road or cyclocross bike?

Can a hybrid bike's stem be slammed to make it nearly as fast and powerful as a road or cyclocross bike? More aggressive positions are thought to improve power transfer. That means a better workout ...
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2answers
2k views

What's the proper way to fit a hybrid/commuter bike?

What's the proper way to fit a hybrid/commuter bike? Most detailed bike fit articles seem to apply to road bikes but not so much for hybrid/commuter bikes which cycle commuters, recreational cyclists,...
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1answer
1k views

Which position adjustments maximize the use of the glutes in a road bike?

I usually don't feel the glutes firing when I'm seated unless I'm in a really long and hard climb or if I stand up and move back. Is there any common adjustment to maximize the glutes utilization? Or ...
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2answers
725 views

Are bikes with aggressive positions required to achieve high fitness levels when training on a bike?

Are bikes with aggressive positions required to achieve high fitness levels when training on a bike? My bike fitter claimed that a more aggressive posture is better for transferring power than a more ...
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1answer
490 views

How do you find the right saddle for road biking?

I bought a Cube Attain GTRC disc, a great bike apart from the saddle, which is quite chunky and square. I would like to find a better one. Tips for saddle sizing for road biking? Long saddle ...
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3answers
2k views

How to be certain a Boardman ADV 8.8 would fit without prior road bike experience?

I'm looking to buy my first road bike - an adventure/gravel road bike. Question: How can I be certain it's okay or not? And should I be looking for a bike that's closer to my estimated frame ...
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1answer
523 views

Can hybrid bikes be as fast as cyclocross bikes if we use an aero position instead?

Can hybrid bikes be as fast as cyclocross bikes if we use an aero position instead? There's quite a lot in common for both bikes. People claim that CX bikes are faster. It seems like the main reason ...
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2answers
293 views

Mild pain in lower forearms during biking

I feel some pressure and fatigue in my wrists and lower forearms during riding but not after it. I don't know whether it is due to weakness of my wrists or my suspicion that my 18" frame mount bike is ...
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2answers
228 views

Why do peope think the upright postion is comfortable?

Since my dad bought my first bike when I was a kid I tended towards a leaned forward position. I don't mean hands on the drops position, just a more leaned forward one. Skip forwards for almost 30 ...
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1answer
941 views

I am willing to switch from 700x23c to 700x28c (front) and 700x25c (rear)

I've just bought Orbea Onix TDI Road Bike that has 700x23c tires. They are very tough on the roads that I have around - I go to mountain highways and there's a lot of pavement cracks that feel too bad ...
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2answers
216 views

Risks of pedaling with outward pointing knee

During my pedaling action I always try to keep my knee moving in plane parallel to the plane containing the frame, or, in other words, my leg parallel to the frame. I have however noticed other ...
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1answer
121 views

Stack measurement help

I'm trying to determine where I fit on the Cannondale Slate geometry because it doesn't seem they use top-tube actual or seat tube, but rather they're using the Stack? I see a great sale on a 56cm ...
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2answers
2k views

Can I swap BMX wheels for a larger size?

I am a 5 foot 10 inches 14 year old boy who would like to get into riding a BMX. So if I was to buy a BMX with a certain size wheels, can you swap them for bigger wheels
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3answers
1k views

Why do I lose so much power/speed in an aggressive position?

I've heard many cyclist say they can go faster (and are more comfortable) with a large bar drop. If my bar is more than 5cm below the saddle (even by 5mm) -- or if I increase the reach -- my power ...
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2answers
3k views

Pedal foot position - balls or arches

I notice that when I pedal that I mostly seat the pedal in the arches of my foot naturally. I also notice that the cycling shoes tend to seat the cleats in the balls of the foot area, as do other ...
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1answer
30 views

Ladies' Cycling Shoe Sizes/Fits

I am interested to know what differences there are between brands of women's cycling shoes, specifically, who makes shoes in larger or smaller sizes as well as who makes shoes for narrow feet or for ...
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2answers
922 views

Is it possible to fit a 36T chainring on a 34T frame?

I'm thinking of building a bike from scratch around a Commencal HT AM 2018 frame, which normally comes with a 32T front chainring (1x setup) and says it takes 34T max. However a 36T would be ideal for ...
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2answers
746 views

Should I choose 26“ or 28” size BTWIN Triban 100 with dropped handlebar?

My height is 5 ft 9.5" (176.5 cm). I went to Decathlon and tried out both the 26" and 28" bicycles there. Both sizes felt comfortable. But I cannot really tell unless I ride for a long distance. I had ...
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4answers
107 views

Knowing what size bike to look for [duplicate]

I am presently riding a hybrid that apparently is a bit too small for me, and I'd like to replace it with a road bike. Having ridden this improperly-sized bike for as long as I have (about 8 months, ...
2
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1answer
122 views

Good fit vs. Best fit - Lower end of the fit range (Difference of 1 cm). Is it OK? or can this tiny difference still cause pains?

I want to buy a second hand Trek Cronus (Gary Fischer Collection) bike (50cms) for my wife. I am getting a good deal on it. My wife's height is 156cms. As per the Trek Sizing chart, the range of rider ...
2
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1answer
185 views

How long does it take for one to get settled on a new saddle?

I recently switched from a Selle Royal Seta T1 saddle to a Shimano Pro Falcon Anatomic saddle with a cut-out. It's lighter, wider (152mm), and has lesser padding than my previous saddle. The first ...
4
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4answers
1k views

Help understanding effect of Crankarm length on gear ratios

Trying to learn more about bike fit and gearing, and having trouble understanding the effect of crankarm length on gearing. In an article on bicycling.com it states "The relative jumps between gears ...
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4answers
203 views

Can I make this bike fit me?

There are two questions here really though they both have to do with fit. Today I tried a Baad Raad electric fat bike. This question isn't about batteries or fatties. I just wanted you to know this ...