All Questions
17
questions
30
votes
5
answers
17k
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 ...
- 12.1k
11
votes
3
answers
21k
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?
- 938
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 ...
- 9,606
7
votes
2
answers
3k
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 ...
- 1,043
6
votes
1
answer
231
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 ...
- 163
4
votes
3
answers
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 ...
- 507
4
votes
2
answers
8k
views
Front wheel lifting on climbs on my Mountain Bike
I've got a full suspension XC/AM 29er mountain bike (Gary Fisher Hi-Fi Pro). I'm running a size small frame with an 80mm stem with about 7 degree rise. Bike seems like a good fit for me. I do run the ...
- 18.3k
4
votes
3
answers
561
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. ...
- 167
4
votes
1
answer
145
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?
- 143
3
votes
2
answers
897
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 ...
3
votes
2
answers
734
views
Bicycle Geometry 101?
Are there any resources or books that discuss bicycle geometry? I am looking for resources that would allow to get a rough idea of how relaxed or aggressive a particular bicycle geometry is, by ...
- 655
2
votes
1
answer
288
views
Bike fit - comparison of similar geometries
I'm usually riding my hybrid Giant Roam but recently I've been given a 2nd hand Decathlon 27.5 MTB for free and I've started hitting some mountain bike roads (not trails, more like forest paths, fire ...
1
vote
1
answer
159
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 ...
- 11k
1
vote
2
answers
3k
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 ...
- 19
1
vote
1
answer
403
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 ...
- 113