Questions tagged [bmx]

BMX is a style of off-road bicycles used for racing and stunt riding. It also refers to the sport itself.

Filter by
Sorted by
Tagged with
2
votes
0answers
143 views

What brand is this BMX frame?

Can anyone tell me what bmx frame this is? I can't find anything about it.
2
votes
0answers
74 views

What year make and model of my haro frame [duplicate]

I have a haro frame that I believe is a 1986 haro group 1 but the only difference is that it doesn't have a place for the kickstand like the rest I've seen
3
votes
1answer
37 views

Bmx tire hole. Won't pump up!

So I found a small thorn in my tire. It did make a hole in my tube so I replaced it after trying many solutions. My question: I'm wondering if because there is a hole in the tire but not the tube, why ...
0
votes
1answer
388 views

What brand is this (maybe Eastern) frame? Is it good for a first bike?

What brand is this frame? I think it may be Eastern but I'm not sure. Also is it good for a first bike?
4
votes
1answer
192 views

Rear sprocket clicks or points of engagement

I'm a dad learning about BMX racing and I want to know what the difference is between a sprocket which the bike shop says as 90 odd clicks, then starts talking about points of engagement. Does the ...
-2
votes
1answer
2k views

how can i determine the model of dyno brand BMX i have

I have a dyno vfr 3d dropout flat oval bike. How can I find out what it is? The serial number is S9ET18105.
3
votes
2answers
355 views

Should my aftermarket frame have a serial number on it?

I was riding a mostly custom WTP Crysis frame which had a serial in case the bike was lost or stolen. I snapped the drop out arms on Sunday and ended up buying a new FBM Hard Way frame. I checked all ...
3
votes
2answers
520 views

I bought a used 20 inch bmx bike from bike shop but no one has any idea of the brand

Could someone help me narrow this down? I bought a new-used bike from local bike shop in Sacramento, California, USA. I do not know what brand it is and so were the bike shop. There are no stickers ...
2
votes
0answers
91 views

Chain vs seatstay with a 50T Chainring - BMX frame

I plan to put a 50T chainring on my bmx but I am afraid to have an interference between the chain and the frame. Does anybody know what is the critical distance between the seatstay and the chain so ...
0
votes
1answer
3k views

Redline BMX or is it Redline decals on something else?

I got this bicycle at a yard sale and thought it was a Redline BMX as that is what the decals on it are and same with head badge. Someone said it was not a Redline because the rear dropouts are not a ...
2
votes
2answers
4k views

disk brake rotors mounting on bmx hubs

Preface: I am going to start building out new bike for myself and decided to put disk brakes on my new bmx build as an additional challenge. I am old school and prefer brakes on front as well, it ...
3
votes
1answer
127 views

507 rims on a narrow frame

I bought my son a powerlite Jr cruiser. He would like to but a bigger tire on it. It currently has 520mm 24" wheels with 1" tires. Question is how wide is a 24" 507 bmx rim? I can't find specs ...
3
votes
1answer
670 views

BMX V-Brake lever for MTB compatibility

Shimano have this v-brake levers in the product family DXR for BMX. Is there any difference between a BMX brake lever and an MTB one? Are they smaller?
3
votes
1answer
3k views

Are there any tricks to make “U brake” stronger?

I rebuilt a kids bike. I had the wheelset and calliper/U-brake replaced. Parts that I used are not cheap parts, lets say its more of mid range parts for BMX, normally made of alloy. I made sure the ...
6
votes
2answers
2k views

Why do riders swing the bike out sideways when jumping?

When people do really big jumps on a bicycle or motorcycle, they'll swing the tail of the bike way out to the side once they've taken off. Then it rotates back under them by the time they land. Do ...
2
votes
1answer
213 views

BMX: Freestyle vs Supercross?

So I understand the difference between the sports but how diifferent are the bikes? are they essentialy interchangeable or are there special racing BMXs?
5
votes
2answers
873 views

What is a good method for constructing dirt jumps?

What is a good method for constructing dirt jumps? Not massive jumps, just something more than a simple mound of dirt for a bit of fun. It's one thing to pile up the dirt, but there seems to be a bit ...
7
votes
1answer
208 views

Effect of BMX bike geometry on manualing

What aspects of the geometry of a BMX bike have an effect on the ease (or lack of ease) with which a manual can be performed? Obviously there is an element of skill to performing a manual, but do ...
2
votes
1answer
2k views

Ideal top tube length for BMX

Regarding BMX bikes, is there an easy way to determine what top tube length is most suitable for a person based on their height? In my experience, most LBS only want to talk about BMX size in terms ...
6
votes
2answers
2k views

How can i get the most air from a jump?

I'd like to know what technique/s to use to get both the most height, and the most distance from a dirt jump. The stock image below is the kind of dirt jump I'm referring to.
4
votes
3answers
606 views

How do I fix a loose saddle?

My seat on my bmx turns literally on every bump. If I tap it it'll turn and normally fall off.. The teeth on the seat look to be fairly worn. I don't really want to spend any money as it's just a ...
1
vote
1answer
422 views

How do you remove the sprocket from an eighthinch splined BMX style crankset?

I have the EighthInch Freestyle Splined Crankset. These are very similar to profile bmx cranksets. I purchased a larger sprocket to use with the crankset. I've used a crank puller to remove the drive ...
1
vote
1answer
302 views

What is the usual value of a Fit bike pro bmx second hand?

There are some photos of the bike http://imgur.com/a/rIozR Can I get a rough value of it?
2
votes
1answer
598 views

BMX Bike Sizing and Changing Parts?

I'm a 4'11" girl who just started riding BMX, and I'm riding a 20.5" frame. I find that it's really big and quite heavy for someone my size. Is 20.5" too big or should I just suck it up and keep going?...
0
votes
1answer
107 views

How do i figure out the maker of my bike?

There are no words on it, it is a chrome frame and the only markings i found on it were a serial number that reads G1109025563. Is there any way i can get any information on it?
0
votes
1answer
487 views

Should I stick with my Stolen (brand) BMX or should I build my own bike? [closed]

I live in Greece and I am 13 years old. Recently I found a Flatland frame and thought about building my own bike. Should I build my own bike or should I stick with the Stolen BMX I already have? I ...
-1
votes
2answers
483 views

Why are there BMX off road races

I was always curious about this, but I never found the answer. Originally I only knew freestyle BMX bikes, but then found there are official races offroad. What is the idea behind this? Sounds like ...
3
votes
1answer
253 views

Every time I move my handle bar left or right the wheel turns in different direction

I crashed my bike and now every time I push on the front wheel a little, or if I turn the handle bar a little hard the wheel turns in the other direction. What could cause this and what can I do ...
1
vote
1answer
2k views

How do I fix U brakes?

I found an old bmx in my shed and I'm just doing it up a little as a good muck around bike. It's not very good, I don't even know the brand but i cut the front brake off, because it didn't even work ...
-1
votes
1answer
98 views

I don't know what it is [closed]

The body is white and there is a sign that has a HH on it and my grips say that it is a wethepeople . The rims are titanium blue , the handle bars are gray,and the forks are to
2
votes
1answer
1k views

Can´t remove BMX stem top cap bolt (won´t loosen)

I was trying to remove the handlebar and stem of my bike in order to be replace them. The bike has got a BMX stem and the top cap bolt is spinning freely in both clock and counterclockwise. Any idea ...
11
votes
3answers
4k views

How did cyclists get over curbs before BMX era?

There were curbs before 1970s, right? I wonder whether everyone had to dismount or dramatically slow down before curbs until bunny hop and wheel lift became popular, I guess, in 1970s among first ...
3
votes
1answer
743 views

What's this noise? Is it from my crank?

I have recently been riding bmx, racing to be more specific. I ride around my neighborhood a lot when im not at the track and have noticed this loud clanking noise. I didn't know where it was coming ...
1
vote
3answers
8k views

Is hydroformed tubing good?

I've recently saw that a bmx frame was hydroformed.Is it better than not hydroformed?
5
votes
1answer
11k views

How many freewheel thread sizes are there?

I'm buying new freewheel and noticed that not every freewheel can be screwed onto my hub because they have different thread sizes. For example: I've found the following thread size specifications: ...
0
votes
1answer
303 views

Friction occurs in BMX Freewheel

I've just found out where friction occurs in my BMX. When I take chain off the Outer Part and spin the rear wheel the wheel will spin for several minutes but when the Outer Part can't rotate with the ...
4
votes
1answer
2k views

Riding bicycle without using seat

I've almost always rode on a BMX, so I've never been sitting while riding because of how low the seat is.Now I've had a chance to try out a more normal bike but I found sitting on the seat to be very ...
4
votes
2answers
1k views

BunnyHop Soft Landing

I broke my pedal today. I own a bmx. It happened when I landed from an american bunnyhop. Any tips to land softly? (I have even bent the rim.)
2
votes
1answer
4k views

What make is my BMX frame?

I have a BMX forsale, but I would like to know what make the frame is so I can determine how much it is worth. Does anyone recognise this symbol on the frame? Thanks for your help Jon
3
votes
1answer
97 views

rebuilding/frankenbike query

My son (teenager) has a second-hand Zombie bmx style bike - it's designed for kids, but as far as I can see the frame size is the same as any bmx. It needed a bit of messing around with, I've already ...
5
votes
2answers
450 views

Add front brake and/or improve back brake on 2012 Specialized P.24?

I love the P.24. Sometimes I like to ride it on steep offroad downhills and keep it under control. Currently, my braking strategy is brake and bail if necessary. :) According to http://bmx-bikes....
2
votes
3answers
5k views

My stem keeps moving side to side even thought I tighten it

I just got a new Demolition Stem.I tight it with all my force And It keeps slipping side to side Like it doesnt match with the fork lined up And whenever I check it its fine but after a while it is ...
4
votes
2answers
764 views

Are front and rear tires on BMX bikes interchangeable?

what is the difference between a front tyre and a back tire and would it matter if they was both front tyres or both back tyres on a BMX bike?
2
votes
1answer
2k views

What is the standard diameter for BMX brake mounts

First of, these are the sort of brake mounts I'm talking about (though I believe the diameter is standard whether the mounts are removable or welded to the frame/forks): What is the diameter on the ...
4
votes
3answers
2k views

BMX gearing - for road / commuting

I have a 2010 Haro Pro Race, which I bought for commuting and general tomfoolery. I commute on it 2 miles a day, and I want to be able to go faster by changing the current single-speed gearing ratio. ...
3
votes
4answers
9k views

BMX stem slipping; how to stop?

I recently bought a BMX bike that currently has all stock parts. Recently, with the school and weather, I haven't been able to ride it that much. Anyways, when I picked it up from the shop, the bars ...
-3
votes
1answer
24k views

How to tell what BMX frame I have?

How can I determine what kind of BMX frame I have if I there no decals on the bike when I got it? I got it from my dad who found the frame and we put it together, but I am clueless as to what brand or ...
5
votes
1answer
6k views

Can I add gears on a bmx?

Just asking if it is possible. My friend added gears, but won't it damage the look or my cycle?
8
votes
2answers
950 views

What is it called when you ride a bmx like a unicycle?

I was looking around a bit on YouTube and found a video for a footjam decade... which is pretty cool, in my opinion. However, in this video at 2:44 he rides the bike like a unicycle, straddling the ...
6
votes
3answers
40k views

Advantages / disadvantages of freecoaster and cassette hubs

I've been reading a lot over the past few days about BMX, and last night I watched a few videos like this one. I have been seeing the words "freecoaster" and "cassette" around a lot, and I was curious ...