84
votes
Accepted
What is the foam tube on the top of bmx frame for?
It's to ensure that young boys who ride BMX bikes will be able to have children when they grow up.
Fine print: More accurately, it’s to assuage the worries of the parents that are buying the BMX for ...
- 28.5k
59
votes
39
votes
Accepted
Can riding without a chain damage a bike?
What harm could it possibly do? The cranks are held firmly in place by the bottom bracket; the back wheel is held firmly in place in the drop-outs. The chain is completely non-structural: all it does ...
- 16.8k
31
votes
How old is too old for aggressive cycling?
I'm 65, and doing 60-70 miles a week on local roads, trails and hillsides. I'm not a kamikaze biker anymore, but it's still wholly worthwhile. Injuries just take longer to heal, and I'm not so patient ...
- 329
25
votes
Accepted
How did cyclists get over curbs before BMX era?
People were doing tricks on bicycles almost as soon as they were invented. While I couldn't find references about curb hopping in particular, I'm pretty sure that these tricksters from the late 1800s ...
- 11k
20
votes
Can anyone tell me what bike logo this is? Cant seem to find it
It's a logo for the Fit Bike Co
With a circle
Fit Bike Co logos
- 16.4k
13
votes
How did cyclists get over curbs before BMX era?
Note that if you have a penny farthing, then hopping curbs really isn't much of a problem. You do have to be careful not to do an end-over but a bit of leaning back on the saddle or hooking your legs ...
- 28.5k
13
votes
How did cyclists get over curbs before BMX era?
We just pulled the front wheel up and dropped it as we went over the curb, then we kept riding, letting momentum pull the rear wheel over the bike. It's what I still do. (I don't have a BMX bike.)
...
- 231
13
votes
What is this BMX brand logo?
I accidentally found the answer to this question by... listening to Judas Priest. Yep.
Here's a picture of Judas Priest "Painkiller" album cover:
You can see the exact same "double ...
- 425
12
votes
Every time I move my handle bar left or right the wheel turns in different direction
Sounds like the handlebar stem is loose. This is an extremely dangerous situation and you should go immediately (pushing your bike or taking it in a car, but not riding it) to your local bike shop to ...
- 28.5k
12
votes
Accepted
Can you identify this bike/frame?
Ross Piranha 1986
This is my best option based on the standing platform the fork and chain stays.
http://bmxmuseum.com/bikes/ross/89509
- 741
11
votes
Why are BMX saddles so low?
I ride a pro racer XL BMX. They are built for speed. I keep my seat down for 2 reasons.
all my pedaling is done standing up -- power is everything for a racer.
My saddle is made of one material ...
- 111
11
votes
Can riding without a chain damage a bike?
If you don't have a chain and don't have a chainguard, you're almost guaranteed to slip at some point and dig your chainring into your shins or ankles.
It's very painful -- both at the moment as ...
- 28.5k
11
votes
How old is too old for aggressive cycling?
No, age will not restrict you. You're not as young as you used to be, but in a good way: you won't have physical limitations of age, but you'll be more observant and thoughtful about what works for ...
- 858
11
votes
10
votes
I bought a used 20 inch bmx bike from bike shop but no one has any idea of the brand
Verde BMX at http://verdebmx.com/completes/
They appear to be based in Columbus, Ohio, USA.
Method:
I did a google image search for "BMX logo leaf" because it looks like a leaf to me
One of the ...
- 101k
10
votes
I need to identify what kind of bike I have
The logo is that of Mirraco BMX, which was started in 2006 by the late Dave Mirra. Mirraco got out of the BMX business in late 2013 or 2014. You might be able to match up your bike with some of these ...
- 332
10
votes
Can I put pegs on any bike?
To answer your specific BMX Bike
The King Gap XL 2021 will support pegs. It's safe to say that any freestyle BMX bike will support pegs. If you were buying a BMX race bike, there's a chance it doesn't ...
- 1,047
8
votes
How many freewheel thread sizes are there?
The ISO freewheel thread standard is 1.375" x 24tpi
Most freewheels I have encountered have been ISO.
Some hubs use "British" threading at 1.370" x 24tpi
If you use an ISO freewheel on a British ...
- 3,821
8
votes
Accepted
BMX V-Brake lever for MTB compatibility
Most BMX Levers are "Standard Pull", which means they have the shorter pull and are typically paired with road bike brakes (caliper, cantilever, mini-v, or road disc).
Mountain bike brakes (like v-...
- 17.8k
8
votes
Can I swap BMX wheels for a larger size?
If you are 5 foot 10 then you will be fine on a full size 20" wheel BMX. Each model size will be built for the specific wheel size, things like tire clearance and brake positioning will normally mean ...
- 12.1k
7
votes
Accepted
What is a good method for constructing dirt jumps?
Jumps takes time and effort to do right. If you're going to rush or do a half-arse job then don't even bother starting.
Design is important - you need to consider run up space before and run out ...
- 101k
7
votes
Why do riders swing the bike out sideways when jumping?
It's a trick -- it looks good on camera and would count for points accordant with degree-of-difficulty and "sticking the landing" at an adjudicated comp. The bike and rider become effectively parallel ...
- 325
7
votes
Accepted
Identify this BMX logo please?
Looks like a "We The People" bicycle logo
You can find the logo in several of their bike catalogs.
This is one of their 2010 catalog with the logo on the cover
When asking questions please be sure ...
- 16.4k
7
votes
7
votes
Choosing a gear ratio on 20" vs 24" BMX that creates the same "feel"
You don't need trial and error and you don't need a chart, you need math.
(Chainring teeth / sprocket teeth) × tire outside diameter = gear inches
Rollout is just gear inches multiplied by π.
Tire ...
- 24.5k
7
votes
Why are my BMX brake pads not performing?
If the pads are literally oily, they won't work at all regardless of anything else. Clean them with alcohol, sand a little so you know you're on bare rubber, and thoroughly degrease the rim.
Other ...
- 68.5k
6
votes
Accepted
Why are there BMX off road races
BMX was originally (and still is) run on smooth dirt track that have obstacles such as jumps and whoops (also know as the rhythm sections). Because the tracks are smooth a small fully rigid bike ...
- 29.9k
6
votes
Accepted
Effect of BMX bike geometry on manualing
As far as I'm aware, it's all about the rider's location vs. that of the rear wheel.
A short chain stay helps, because it tucks the rear wheel up closer under your center of gravity.
What really ...
- 5,600
6
votes
Accepted
Why do riders swing the bike out sideways when jumping?
Its definitely not for stability, its a trick called "Table top". The flatter they look in the air the higher score.
- 174
Only top scored, non community-wiki answers of a minimum length are eligible