# Tagged Questions

Questions concerning the angles, tube lengths, and other measurements of the bike frame.

4answers
14k views

### Explaining the effects of frame geometries

I asked about buying a bike here, and someone asked on my behalf about test-riding a bike before buying. My question is, what should I know, or should have known, about the sizing or 'geometry' of a ...
2answers
1k views

### Bike fitting experiences

I just recently went through a Specialized BG Pro-Fit (was about \$200), and have to say that I'm super happy with the results and experience. The fitter was telling me about some others out there ...
1answer
13k views

### Touching the front wheel with my foot when turning

My girlfriend got a new city bike today and she touches the front wheel every time she has to make a hard turn. Is there anyway to avoid this besides replacing the whole bike? LATER EDIT: I think I ...
4answers
18k views

### What effect does head tube angle have on a bicycle?

My girlfriend and I are looking at a new bike for her. The one we're looking at has a 70 degree head tube angle while her current bike has a 70.5 degree head tube angle. Unfortunately, none of the ...
3answers
10k views

### Does inseam of pants convert to stand over height of a bike?

If I know my jeans size, for instance 32", 32", can I convert this into an estimate for standover height on a bike?
2answers
10k views

### How does a chainstay length affect a mountain bike performance? (wrt: 26", 650B, 29r)

The trade offs for 26" through to 29" with respect to rolling resistance, contact patch, obstacle rollover, etc... have been well discussed. However, it occurs to me that as the rear wheel gets larger ...
1answer
3k views

### What would be the “definitive” formula to calculate chainstay length from sprocket size, chainring size and number of chain links?

Before I started to write this answer, I thoroughly read this question, its answers and comments: How do I calculate the diameter of a chainring from the number of teeth? So, my question tries to ...
2answers
1k views

### How to stop foot clipping front mudguard

My feet overlap the pedal and clip the front mudguard when I'm turning at a low speed because I have to turn the handlebars wider than normal. My foot doesn't clip the wheel when the mudguard is ...
2answers
501 views

### Are flat handlebars stable at high speed?

I live in a mountainous area, and so there are lots of opportunities for descending at high speed. I currently have a bike with drop bars, and when in the drops, I feel very stable doing this. I am ...