Usually means the front fork, where the front wheel sits. Can also mean the rear fork, a part of the frame.

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21
votes
6answers
30k views

Pros and cons of single-sided forks (Cannondale Lefty)?

Looks like they save some weight, but how do they have a better strength/weight ratio than a traditional two legged fork? With the single-legged fork the fork and axle must resist huge bending all ...
19
votes
3answers
77k views

What is the “preload” setting on the front fork suspension?

I've made a photo of the actual "thing" as I find it very difficult to explain otherwise: I'm wondering what this "thing" sets and how it actually works. So, what is "preload" and what happens when ...
17
votes
5answers
8k views

Is front-suspension a false-economy for cheaper bikes?

I'm a 30 year old male looking to purchase my first non-department store bike. I haven't biked in more than a couple years. My use-case is 90% asphalt (inner-city, occasional low-speed highway) and ~...
14
votes
6answers
23k views

When should I use lockout feature on my fork?

I have a trekking bike with a 63mm fork which has a lockout feature enabling the control of the suspension. Can you explain when should I lock the fork, in what position and why? One obvious example ...
12
votes
4answers
3k views

Is it safe to remove “lawyer tabs” on a carbon fork?

Is it safe to file off the "lawyer lips" - the little tabs on the end of the fork dropouts - on my carbon road fork? What about cyclocross forks? I've heard it's "common sense" to remove them...
12
votes
3answers
602 views

What is this spring between the fork and the frame?

Sometimes on a bike I see a short spring, most often covered in rubber, connecting the fork with the frame: What is the purpose of it? The only thing that comes to mind is stabilising the fork so it ...
12
votes
3answers
16k views

Replacing suspension with a solid fork

I have an older version of this bike: They have made some changes to the components since I bought my bike but it is more or less the same. Here are the specs on the newer bike. I was hoping to ...
10
votes
1answer
192 views

Why do modern mountain bike forks no longer use boots on fork stanchions?

Why do modern mountain bike forks no longer use boots on fork stanchions? Older mountain bikes used to have them on the forks, and lefty and headshocks still do. Why have these fallen out of fashion ...
9
votes
3answers
22k views

How do I choose a bicycle fork?

I'm putting together a bicycle on a budget from a frame I was given and various parts from a bike with a broken frame. The only part of any expense that I really need is the fork, and I want to get ...
9
votes
3answers
800 views

Are curved aluminum forks safe?

This is an entry-level road bike made by "Upland", a Chinese company. That fork is aluminum. You usually only see steel (and sometimes carbon) forks curved like that. The only reason you would ...
9
votes
2answers
6k views

Cannondale Lefty DLR Ti Fork Rebuild/Maintenance

I have a mountain bike with a 2003 Cannondale Lefty DLR Ti fork. As I've been riding the bike this season, I've noticed that the fork is behaving strangely. It doesn't seem to lockout fully and it is ...
8
votes
1answer
1k views

Hard fork and low tire pressure or viceversa?

With mountain bikes, what do you think is more efficient: highly preloading the fork and using low tire pressure or having a "bouncy" fork and hard tire pressure? I like to have the fork with quite a ...
8
votes
1answer
21k views

What maintenance does a front suspension fork need?

I've just bought a used bike on eBay, its a 2002 Marin Bobcat Trail. It has 'In-Sync 266' suspension forks. This is my first suspension bike so I need some guidance in the use and maintenance of these ...
7
votes
4answers
13k views

Is it possible/sensible to add a suspension fork to an old mountain bike?

I have a ~1993 Giant mountain bike. It's not great, but I am a very new and casual rider. The bike has a solid fork and it makes for the predictable rough trail ride. The trails are generally ...
7
votes
5answers
3k views

What is the advantage of a reverse arch suspension fork?

There are a couple of suspension fork manufacturers that have adopted a fork design where the lowers have a reversed arch. I can't see that they claim any particular performance advantages for it, ...
7
votes
1answer
394 views

Why would higher fork contribute significantly to breaking the frame?

When I recently cracked my frame near the headtube, every bike shop that I went to, asked me explicitly "Did you put a longer travel fork?". Putting aside that apparently fork travel and fork crown ...
6
votes
3answers
1k views

Can I leave a suspension fork upside down?

I currently have my mountain bike disassembled, I broke a tire and needed some space in my room. The frame is resting upside down on the saddle and handlebar. The fork itself is a Rock Shox SID Dual ...
6
votes
2answers
724 views

What is the purpose of this braze-on?

I'm wondering what the purpose of the braze-on pictured below is? It's on the non-drive side of my fork. I thought it could have something to do with racks, but then I figured they would put one on ...
6
votes
5answers
2k views

Disc brake rotor size and forks strength

I have been told that every fork has a maximum rotor size characteristic. For example, for my $75 Suntour this is listed as 185mm. The explaination that I have been given for this limitation is that ...
6
votes
1answer
219 views

Stress on front fork from car transport

It's often easier to transport a bike in the back seat of a car with the front wheel off, rather than setting up the bike rack. I've noticed that, due to the way the car seats are built, there's often ...
5
votes
4answers
10k views

Why isn't my suspension bouncy?

I recently bought a Carreras centos limited edition mountain bike. I want to find out how to make my suspension bouncier and I want to experience a MUCH more comfortable ride. I have tried fiddling ...
5
votes
3answers
464 views

holes on the inside of metal fork blades, what are they

I noticed there are two very small holes on both blades on my new fork. They are on the inner side of the blades at the end of the fork blade just above wheel axis mounting point. They are apparently ...
5
votes
2answers
87 views

Steel Frame Creaks while Braking

My steel BSO has developed a creaking sound when I apply the front brake. I only hear it when I am beginning to brake, when there's not a lot of pressure being generated. I can recreate this sound by ...
5
votes
4answers
2k views

Frozen suspension in the winter

Winter is coming! Last season I put my road bike in the garage and just road my mountain bike all winter. Something strange happened: My suspension fork froze. When spring came everything ...
5
votes
1answer
2k views

conversion to rigid fork

Is it possible to put a rigid fork onto a 120mm travel hardtail without upsetting the handling? I used to ride a Kona P2 fork on a 96 AA frame, which I suppose was designed for a max. of 100 mm ...
5
votes
2answers
2k views

Can a steel fork be unbent?

I was hit by a car and now the steerer of my Reynolds 753 aero fork is bent. Is it possible to bend them back? Would that be safe? I can't afford a new pair!
5
votes
2answers
4k views

How do I measure a fork for suitability?

I have an old bike I bought from ebay that looks to be '80s vintage. I'm converting it to a single speed. I have some new(ish) wheels that I plan to use. I tried to just slot in the existing wheels ...
5
votes
1answer
257 views

Is it ok to stretch a steel fork from 90mm to 100mm?

I want to fit a 100mm front wheel on it but the current wheel seems to be 90mm wide..
5
votes
2answers
4k views

Fork lube. Should I use it? If so how often?

I ride a mountain bike with front suspension. I've recently seen fork lube for sale on an online retailer. This got me thinking. Do I need to be using fork lube? How does it help? If I bought some how ...
5
votes
1answer
5k views

Upgrade/Replacement options for Cannondale Headshok DD50?

I have an older Cannondale that I love. It's an F600 comp (the special edition one in pumpkin orange), with a DD50 front shock. The problem is that the DD50 is WORN as all heck. Even when locked ...
5
votes
1answer
3k views

Suspension fork - Can you leave them locked for a long time?

My bike's two years old (about 1800km on it, almost all road and bridleway) and kept in a garage. Back in November or so I locked the front suspension fork for road-riding, and over the winter ...
4
votes
2answers
1k views

Road Fork: Curved vs Straight?

I found a frame I'm interested in building up, but it doesn't include a fork. So I've been looking for carbon 700cc forks... with disc tabs. I've found a few, but ran into a new dilemma - curved vs ...
4
votes
2answers
648 views

How do I know if there is water in my fork

I have a SunTour XCR fork. Not wanting to ruin it I am worried that a significant amount of water has penetrated beyond the seals. I have recently ridden the bike in rain, snow, and washed it in a ...
4
votes
2answers
700 views

What are early signs of failure in forks/stem/handlebars?

I ride an SE Lager. In the past year, the following components have worn out or broken Front chainring Rear cog Rear freewheel Chain Seat (one of the bars snapped off) Many, many spokes Wheels ...
4
votes
1answer
716 views

How often to sevice suspension forks

Consider a SunTour XCR coil fork or any similar. Service manuals suggest "full service" every 30 hours of riding time. I take that to mean removing the boots and re-lubing the stanchions. However, ...
4
votes
1answer
374 views

Proper fork length for a bike with 5.5 inches of rear shock

I purchased an older Santa Cruz Blur frame today. From what I can gather the shock mounted on the frame gives 5.5" of travel. I'm looking to buy a fork to match. Do I need to go with a 140mm fork, ...
3
votes
4answers
8k views

Badly rusted suspension fork

I have a $300 MTB used for commuting. It has been three years now, and the rain and snow have said their word. Two weeks ago I disassembled the fork and spent a good one hour with the sandpaper, ...
3
votes
3answers
7k views

When is using a suspension fork worth it?

I've recently picked up biking again since my childhood years, so I'm quite the newbie. I've figured out most of the features I'd need so far but I'm at a loss at this one. Why would you pick front ...
3
votes
2answers
385 views

Trying to build a bike, confused about fork/headsets/compatability

I have a fork with a 1" steerer tube, and a frame with a 1.5" head tube. The steerer tube is slightly short, and when inserted into the frame, is flush with the top of the head tube. The fork is ...
3
votes
3answers
145 views

What are my options for correcting a bent aluminum fork?

I have a Cannondale ST700. A few weeks ago, I had a head-on collision. At first glance, the bike was fine. But the next time I went to ride it, it pulled to the side when I turned. Turns out my fork ...
3
votes
3answers
7k views

Are modern forks compatible with older style bikes?

I have an old 10-speed bike (likely 80's vintage) with a threaded fork. Can I replace it with a modern threadless fork with the style of stem that slides over the top of the fork and clamps on? I know ...
3
votes
2answers
561 views

Rebound doesn't work on a Rock Shox Recon Air

On my Trek Fuel Ex6 I have a Rock Shox Recon Air fork with rebound valve. The valve has a 2,5mm allen key for adjustment, but it seems broken. The Trek Suspension Setup Guide tells me to set the ...
3
votes
2answers
2k views

Is it possible to replace a 1 1/8 steering tube with a 1"?

I have a 94 Giant ATX. Threaded 1 inch steeering tube. I need a shorter stem, and would also like to install a suspension fork. Is it doable? Could I take a modern suspension fork, heat the crown, ...
3
votes
2answers
140 views

What kind of grease is that?

So I just managed to remove the fork from the old frame I'm renovating. In the headset bearings, the grease looks odd! See these tiny metal balls? At least it looks like that... Is that on purpose, ...
3
votes
4answers
2k views

Should cheap suspension forks be oiled often?

Should a cheap fork be oiled / lubricated from time to time? If yes, how?
3
votes
1answer
56 views

Dual crown fork or not?

I currently own a 2015 GT Verb Expert. And after watching a Red Bull rampage video I started wondering can I put a 200mm fork on my Verb Expert. Or does my head tube need to be more angled. And is it ...
3
votes
1answer
67 views

MTB front suspension sounds like rusty trampoline

I have an old GT i-drive 3.0 from like 2001, it has a Judy Rockshox fork on the front. I imagine its never been serviced (I bought it used) and it's starting to sound like a symphony of rusty ...
3
votes
2answers
201 views

Hitting bumps on a locked out suspension fork

I just bought a mountain bike with a Suntour XCM fork with lockout. Being a BSO rider, this is my first ever bike with a lockout on the fork. I will be riding trails, but most of my riding will be in ...
3
votes
2answers
332 views

torque specification on headset

I was wondering why there is a torque specification on the steer tube end of the stem for mountainbikes. The torque specification that goes to the handlebar is reasonable, after all handlebars are ...
3
votes
3answers
29k views

Thru Axle and Quick Release Fork/Frame Compatability?

Without using manufacturer specific parts: Can I use a wheel with a thru-axle hub on a standard quick release fork or frame dropouts (with an adapter)? Can I use a wheel with a quick release hub on ...