Questions tagged [fork]

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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I suspect that my carbon fork has a crack but I can't really tell

I've relocated to a new town so I'm still looking around for good bike shops. For the time being as I was re-assembling my stem, i noticed a small notch of about 0.5mms on the front of my fork (the ...
Greg's user avatar
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Specialized Sirrus bicycle, fork cracked [closed]

I have a Specialized that was a gift, but have some problems at the front fork. The fork is cracked, as per Photo: Can someone help me to discover how to repair? Other photos of the bike:
Rafael Susano's user avatar
2 votes
2 answers
158 views

Fork V-Brakes won't come out

I can't remove these v brakes out of my fork, any idea how to remove these? Also, i unscrewed the bolts as you can see at the photo but still no go.
Clayde's user avatar
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3 answers
73 views

SR Suntour XCM fork too stiff

My Rockhopper Comp 27.5 came with the SR Suntour XCM fork (coil) and I want to make it less stiff. I have tried to fully adjust it as far as it goes, but it is still super stiff. I don’t want to spend ...
Elias's user avatar
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4 votes
2 answers
1k views

How bad is topping out a suspension fork?

I recently got a relatively cheap department store bike to bring to college, since it will see a lot of wear and will be kept in the elements. However, whenever I lift the front wheel (as in to get on ...
toomanyfeet's user avatar
1 vote
1 answer
43 views

Promax Headset Adapter 1", 1-1/8

I have a broken Cannondale 2007 Bad Boy Ultra, will the Promax Headset Adapter 1", 1-1/8" give me the opportunity to replace it with a non-shock standard fork.
Steven Lovelace's user avatar
2 votes
2 answers
257 views

What is the name of bike fork spacer for shipping a bike frame?

I am trying to pack my bike for an plane ride, and while packing I wanted to know what is the name of the spacer that needs to replace the wheel(s) between the fork dropouts to prevent frame ...
Jas0n's user avatar
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5 votes
3 answers
1k views

What is a safe weight for front rack + luggage for a steel race bike fork?

I frequently commute with a backpack on my '90s steel race bike, and encounter the usual issues of sweaty back and tired shoulders. The riding position is also not perfect for carrying a backpack on ...
goose_lake's user avatar
1 vote
2 answers
276 views

Light fork recommendations?

I just built my first bike up, it's a total frankenbike and it's a lot of fun, but I'd like, just for fun, to see how light I can make it as I do mostly use it for practical commuting. The frame is a ...
Gedwyn Cantrell's user avatar
0 votes
1 answer
90 views

Hybrid bike. ride with front suspension always locked: effects on fork durability

I am considering acquiring a hybrid bike with a front suspension, since it is the closest to what I want that I can find. But I do not want a front suspension, so I would always ride with it locked ...
calofr's user avatar
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2 votes
1 answer
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Industry standard weight limit for suspension forks and carbon fiber forks?

I followed the advice of people on this forum and upgraded to wider tires on my hybrid instead of buying a suspension fork. Thank you everyone that was a big help. I went from 32mm to 47mm on front ...
Zarxs's user avatar
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Canyon Ultimate CF SL 7 2022 steerer tube compression plug stuck?

This is concerning my friend's Ultimate CF SL 7 (105) 2022. Ridden approx 5000 km so far. Everything's been fine, up until a recent ride, but now there was noticeable movement (in the direction of the ...
nikUoM's user avatar
  • 141
2 votes
1 answer
118 views

Does this poor damping in the forks indicate a fault?

I recently bought an entry level mountain bike, a Cannondale Trail 7, to use as a town bike. My town doesn't have too many mountains, but it does have a lot of badly rutted roads and I wanted ...
John Rennie's user avatar
5 votes
1 answer
525 views

Shallow ring of death

By not servicing the headset for a long time (>10K km), I ended up with the so-called ring of death on the steerer tube. If you have never heard of it, watch this ...
Alessandro Cosentino's user avatar
10 votes
6 answers
3k views

heavy and want to ride again

I bought a street hybrid 2010 Giant Seek 0 a decade ago. It has maybe 30 miles on it. The bike has a 700c 25mm tires and solid Aluxx frame. I want to ride again but I'm 300 lbs. (136 kg) I'm ...
Zarxs's user avatar
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3 votes
2 answers
205 views

Will a New Horizontal Stem Riser Support a Front Child Seat

I recently bought a Lectric XPedition. My goal was for it to transport my 3 kids, 2 in back and the youngest with a front child seat. When I received the ebike, the collapsible handlebars made that ...
Morgan Kenyon's user avatar
7 votes
2 answers
626 views

How do you interpret "minimum insertion" of a quill stem?

I have a 1" threaded fork here, longer than usual. The headset nuts have been separated by a significant number of spacers. So many, that if the quill stem is inserted to the minimum, almost none ...
Noise's user avatar
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6 votes
5 answers
705 views

How do I know where to cut the fork tube?

I am building a road bike and I am not sure where to cut the tube of my new fork. Is there a "standard" for how many spacers (or cm)?
Bob's user avatar
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9 votes
1 answer
2k views

Is this bike fork misaligned?

Just received the delivery of a new Ken 26" Bayside bike, and the first thing to do was put up the front wheel but it seems like the forks are misaligned (although there is no apparent damage in ...
Waqas Ilyas's user avatar
2 votes
2 answers
100 views

I can't figure out the brand of this fork

I recently bought this used fork for a project and I can't figure out what brand it is, I looked for and compared every brand that starts with the letter 'C' but I couldn't find anything with this ...
ambruh's user avatar
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0 votes
1 answer
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Can I fit a damper to sr Suntour spring forks?

I bought a GT avalanche 3 second hand with seized forks. When I stripped them down to clean, there is a coil spring in one side only and no damper fitted. Can I buy a sr Suntour damper and fit that to ...
user70888's user avatar
0 votes
1 answer
62 views

Retromod: where to find rigid 26in fork for disc brake?

looking to replace my 90s Marin rigid fork (canti) for on with a caliper mount for disc brake. The closest I found was this but it is hi-ten. Also I am not sure why they drilled a hole at the junction ...
tweedi's user avatar
  • 587
1 vote
0 answers
36 views

Suntour fork: Air side lower leg screw can't be tightened, rotates too easily

I tried to do a lower leg service on a Suntour Auron 35 fork, for the first time. When re-assembling, I was unable to tighten the air side screw to the 6 Nm that Suntour specifies in this video: ...
Szabolcs's user avatar
  • 1,006
1 vote
2 answers
209 views

Purpose of fittings at the bottom of suspension fork?

I have a question about the suspension fork on my mountain bike. There is a hex socket at the bottom of the right fork leg. There is a normal bolt head at the bottom of the left fork leg. Are these ...
richard greaves's user avatar
1 vote
1 answer
151 views

How to get these lower legs off?

Hi I have a fork from a carrera crossfire 2000, the sticker says mg suntour cr 920. I want to full service and overhaul this fork because the suspension is totally stuck and not working! There are no ...
i_like_bikes's user avatar
1 vote
1 answer
148 views

Manitou Minute Expert fork oil?

What oil viscosity is needed for a Manitou Minute Expert fork? Some people say it's 5w some say it’s 15wt and what weight is best to use?
Virmantas's user avatar
0 votes
0 answers
48 views

How to find replacement lockout cartridge for Marzocchi MZ Race 2006 fork?

I want to replace broken Suntour cartidge for my Marzocchi MZ Race 100mm 2006 fork. It became very soft and lockout doesn't work. But there is no model or serial number marking on the cartridge itself....
torasko's user avatar
2 votes
2 answers
1k views

Aluminium fork dropouts hit floor - need to worry?

I had my bike in a bike stand without wheels, clamped by the seat tube. As I loosened the stand mount lock the bike slipped out of my hand and suddenly rotated forwards as most of the weight was in ...
user4520's user avatar
  • 573
1 vote
1 answer
89 views

Stanchion material or coating on cheaper forks

I bought a secondhand kids bike (2019 Scott Scale disk) with a SR Suntour XCT-JR 24 Disc, 50mm travel, fork. There are some minor rust spots on the upper stanchions and thought about cleaning/...
PyMapr's user avatar
  • 177
2 votes
1 answer
230 views

Can't fit fork with integrated crown race fully into frame

I got a replacement fork for my new road bike because it had a deep scratch in the steerer tube and the manufacturer adviced to exchange it. Today I got the replacement fork and just wanted to install ...
conste's user avatar
  • 493
1 vote
1 answer
71 views

What oil weight on spring side after Charger upgrade in boxxer R2C2 2011

Ive bought the charger damper upgrade for my boxxer 2011 R2C2. Previously I would use 10ml 15WT oil on the damper side and 40ml 15WT on spring side (Boxxer 2011 R2C2 Service Manual). In the charger ...
Code Spirit's user avatar
4 votes
2 answers
127 views

Can i use an a-head with a slitted steerer tube?

I recently bought a used suspension fork, and only at home noticed that the steerer tube is slitted. It is straight, as i would expect for an a-head, and not threaded, But it has a slit much like the ...
Burki's user avatar
  • 1,248
1 vote
1 answer
134 views

Problems installing new suspension fork

My new fork is considerably smaller where the crown race sits and does not sit in the bike frame snug. If I cut and install all the way will it work? My bike is a Carrera Sulcata 1 with a Suntour XCM ...
Ross 's user avatar
  • 11
1 vote
3 answers
215 views

Replacement for Suntour M2000 fork, 26" wheel

I have an old Apollo Paradox full suspension MTB dating from around 2011. The existing fork is a Suntour M2000 with a 26 inch wheel. I think the travel is 50mm/2 inch Stock photo: What would be a ...
Ozzgod's user avatar
  • 11
2 votes
1 answer
2k views

Should I do anything about this minor nick in a carbon fork?

Unfortunately I managed to smack a metal flashlight with quite sharp edges and a bit of movement force against my carbon fork when I wanted to check something on the bike. Although the damage is ...
conste's user avatar
  • 493
2 votes
2 answers
264 views

Front fork brake posts removal

I wonder if the v brake pivot posts can be removed from the front fork, even though the posts have no flat side to undo them with a spanner? Can these be removed with a pair of pliers or a grip of ...
D D's user avatar
  • 17
3 votes
1 answer
120 views

Accomodating new wheel on old bicycle

I have a bicycle from the 1980s. Steel front fork. I am replacing the 27 1/4 wheels with 700cc. The new front wheel hub is 96mm wide between outer face of the bearing housings. The front fork has an ...
caloundra's user avatar
4 votes
3 answers
445 views

Gap between fork and dropout

I’ve just bought a secondhand bike (with an ~80’s Dawes steel frame) and on checking it over I noticed there’s a gap on one side of the forks, where it meets the dropout. The top side and bottom of ...
sp4rky-boi's user avatar
3 votes
3 answers
477 views

I've removed the steerer tube for the first time after 20,000 km, what maintenance does it need?

I have a 2010 Specialized Tricross Sport. I've just take the stem, top cap, and spacers off and removed the fork from my bike for the first time in the 12 years/ 20,000km I've owned it. It's never had ...
SSilk's user avatar
  • 4,129
2 votes
1 answer
403 views

Most likely reason for a stuck lockout

My old RST First Air 100 Lockout (year 2010) fork has had a stuck lockout for some time. This fork has never been serviced so it is probably just damaged beyond repaired, but I am just researching if ...
Vladimir F Героям слава's user avatar
1 vote
1 answer
102 views

How to adjust fork and crown race?

When I removed the fork from my Marin Four Corners 2018 I discovered the headset is not as specified. Among other problem, the crown race is some noname piece not fitting any bearing (not the one ...
greenoldman's user avatar
  • 2,064
2 votes
1 answer
148 views

Bicycle fork fatigue test duration

For a bending fatigue test for a bicycle fork, according to ISO 4210-1, The number of cycles should be 120,000 for stage one of the bending fatigue test and 100,000 cycles for stage 2 of the test. How ...
Dan's user avatar
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1 vote
0 answers
88 views

Magnitude of load and cycles needed during testing of bike forks

I want to do a structural test on bicycle forks. Is there any specific criteria I need to follow of what should be the magnitude of the significant load and also how many cycles would need to be ...
Dan's user avatar
  • 11
4 votes
2 answers
866 views

How to remove the lock lever on a 2020 Suntour NEX suspension fork?

The locking on that fork is no longer working in that in locked position, the fork is as unstiff as when not. On other models, I've been able to remove that blue lever and tighten things underneath ...
sch's user avatar
  • 141
1 vote
2 answers
149 views

I'm having trouble replacing my MTB fork

A few weeks ago I decided to upgrade the fork on my mountain bike. Because it was the same model of fork a presumed i could use the same headset that I had on for the original fork. But when i put the ...
Dom123's user avatar
  • 34
4 votes
1 answer
146 views

What is this tiny part for on the RST 790 fork?

The following picture shows an RST 790 fork from 2010. Anyone knows what the tiny part pointed by the red arrow is for? This part is also present on the RST 777 fork. From another angle and zoomed in:...
olliebulle's user avatar
  • 4,141
14 votes
7 answers
3k views

Are there gadgets that will protect a fork sitting on the ground while the front wheel is removed?

I occasionally—for various reasons irrelevant to this question–take the front wheel off and rest the fork on the ground. Doing this risks damaging the fork. Bicycles are shipped with a plastic object ...
Sam7919's user avatar
  • 9,092
1 vote
1 answer
103 views

What is safe head tube angle for straight fork?

By "straight fork" I mean the one with 1 1/8" head tube. The more slack head tube angle is the more stress on the fork. So what is the safe angle when you can still use straight and not ...
greenoldman's user avatar
  • 2,064
4 votes
1 answer
264 views

Standard distance/height of mid-eyelet on fork?

Is there any standard (regarding height/distance) for middle eyelet on fork? Take a look at this example (taken from https://www.cyclingabout.com/all-about-front-racks-bicycle-touring/): Obviously if ...
greenoldman's user avatar
  • 2,064
1 vote
1 answer
137 views

Is it normal for the hex bolts underneath my mtb forks to be uneven?

So I've been having issues with my 2020 GT Aggressor since day 1. My forks feel very unstable at any adjustment. Upon inspection I noticed that the hex bolts underneath the forks (the ones that hold ...
Alison's user avatar
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