Fork upgrade
#1
Thread Starter
Grouchy Old man
Joined: Feb 2013
Posts: 278
Likes: 50
From: Western NC.
Bikes: Diamond Back Insight 2, Gravity Basecamp mountain bike, GMC Denali Road Bike
Fork upgrade
I just updated the fork on my "Basecamp," "mountain bike." Swapped out the old Suntour fork for an inexpensive "carbon," fork. Weighs a lot lighter than the suspension fork. I went this, because I highly doubt that I'll ever shred on mountain bike trails. Went pretty smooth, though I managed to snap one star nut, and had to fish it out of the fork. Dorked up and rounded out a bolt in the brake lever. Fortunately for me I had a spare one. The front wheel needs truing, and I have ordered a truing stand. (Apologies if I posted in the right forum for this, feel free to move it.)
#3
climber has-been




Joined: Dec 2004
Posts: 9,192
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From: Palo Alto, CA
Bikes: Scott Addict RC Pro & R1, Felt Z1
#4
Old fart



Joined: Nov 2004
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From: Appleton WI
Bikes: Several, mostly not name brands.
#5
Clark W. Griswold




Joined: Mar 2014
Posts: 18,452
Likes: 6,762
From: ,location, location
Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Phil Wood Apple VeloXS Frame (w/DA 7400), R+M Supercharger2 Rohloff, Habanero Ti 26
Keep in mind your bike is NOT designed to be clamped by the tubes. In fact zero bikes should be clamped by the tubes. The seatpost is designed to be clamped and is currently clamped right now.
In terms of the fork I wouldn't trust no-name cheap carbon with no support behind it. But hey it ain't my life. The SR fork was probably a heavy lug but the bike is not a high end bike so tis to be expected. If you aren't mountain biking, I generally recommend not buying a bike for that purpose or at least bikes designed to look like mountain bikes. If I want a carbon fork I would get a hybrid or road bike with a carbon fork and potentially get a higher quality bike in the process with less weight. I would also look at a frame that fits. Slammed seats are a good sign of an ill fitting bike.
In terms of the fork I wouldn't trust no-name cheap carbon with no support behind it. But hey it ain't my life. The SR fork was probably a heavy lug but the bike is not a high end bike so tis to be expected. If you aren't mountain biking, I generally recommend not buying a bike for that purpose or at least bikes designed to look like mountain bikes. If I want a carbon fork I would get a hybrid or road bike with a carbon fork and potentially get a higher quality bike in the process with less weight. I would also look at a frame that fits. Slammed seats are a good sign of an ill fitting bike.
#6
Rhapsodic Laviathan

Joined: Jan 2013
Posts: 1,057
Likes: 146
From: Louisville KY
Bikes: Rideable; 83 Schwinn High Sierra. Two cruiser, bmx bike, one other mtb, three road frames, one citybike.
I've had a number of aluminum bikes, only one wasn't old when I got it, only one had a break. I have broken two steel frames. You're just paranoid.
#7
Dirty Heathen

Joined: Oct 2015
Posts: 2,324
Likes: 1,046
From: MC-778, 6250 fsw
Bikes: 1997 Cannondale, 1976 Bridgestone, 1998 SoftRide, 1989 Klein, 1989 Black Lightning #0033
I personally can't consider a carbon fork an upgrade. I won't use carbon fiber for the same reason I wont use aluminum. They can fail without obvious signs of damage or fatigue.
I'm too heavy to rock the Spinergy Rev-Xes any more, but my 25-year-old SoftRide is still going strong, and I certainly don't pull any punches on my '97 Cannondale, and I've ridden two Headshoks out from under that one.
#8
Thread Starter
Grouchy Old man
Joined: Feb 2013
Posts: 278
Likes: 50
From: Western NC.
Bikes: Diamond Back Insight 2, Gravity Basecamp mountain bike, GMC Denali Road Bike
#9
Thread Starter
Grouchy Old man
Joined: Feb 2013
Posts: 278
Likes: 50
From: Western NC.
Bikes: Diamond Back Insight 2, Gravity Basecamp mountain bike, GMC Denali Road Bike
Keep in mind your bike is NOT designed to be clamped by the tubes. In fact zero bikes should be clamped by the tubes. The seatpost is designed to be clamped and is currently clamped right now.
In terms of the fork I wouldn't trust no-name cheap carbon with no support behind it. But hey it ain't my life. The SR fork was probably a heavy lug but the bike is not a high end bike so tis to be expected. If you aren't mountain biking, I generally recommend not buying a bike for that purpose or at least bikes designed to look like mountain bikes. If I want a carbon fork I would get a hybrid or road bike with a carbon fork and potentially get a higher quality bike in the process with less weight. I would also look at a frame that fits. Slammed seats are a good sign of an ill fitting bike.
In terms of the fork I wouldn't trust no-name cheap carbon with no support behind it. But hey it ain't my life. The SR fork was probably a heavy lug but the bike is not a high end bike so tis to be expected. If you aren't mountain biking, I generally recommend not buying a bike for that purpose or at least bikes designed to look like mountain bikes. If I want a carbon fork I would get a hybrid or road bike with a carbon fork and potentially get a higher quality bike in the process with less weight. I would also look at a frame that fits. Slammed seats are a good sign of an ill fitting bike.
#10
Clark W. Griswold




Joined: Mar 2014
Posts: 18,452
Likes: 6,762
From: ,location, location
Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Phil Wood Apple VeloXS Frame (w/DA 7400), R+M Supercharger2 Rohloff, Habanero Ti 26
I don't mountain bike, because I am too old for that. I would just lay on the ground and wince in pain if I took a spill if I mountain biked. I'm using it to ride on the street and maybe some gravel roads. If I ever get the money to afford a high end bike, I'd want to build it myself. The Basecamp is entry level for sure. I know that many manufacturers slap "mountain bike," on a bike that can't handle hard core mountain biking. I'm on a limited budget, so I get what I can afford.
#11
Thread Starter
Grouchy Old man
Joined: Feb 2013
Posts: 278
Likes: 50
From: Western NC.
Bikes: Diamond Back Insight 2, Gravity Basecamp mountain bike, GMC Denali Road Bike
#12
Rhapsodic Laviathan

Joined: Jan 2013
Posts: 1,057
Likes: 146
From: Louisville KY
Bikes: Rideable; 83 Schwinn High Sierra. Two cruiser, bmx bike, one other mtb, three road frames, one citybike.
The one that broke on me, was my Mongoose XR250, but I had the seatpost too high and it broke under the clamp. The two steel frames was a Lotus Pegasus and a Scwinn Probe. One broke the seat tube at the BB, the other was the downtube at the BB.
#14
Thread Starter
Grouchy Old man
Joined: Feb 2013
Posts: 278
Likes: 50
From: Western NC.
Bikes: Diamond Back Insight 2, Gravity Basecamp mountain bike, GMC Denali Road Bike
#15
Banned
Joined: Feb 2008
Posts: 8,701
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From: Mississauga/Toronto, Ontario canada
Bikes: I have 3 singlespeed/fixed gear bikes
#16
Sunshine
Joined: Aug 2014
Posts: 18,756
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From: Des Moines, IA
Bikes: '18 class built steel roadbike, '19 Fairlight Secan, '88 Schwinn Premis , Black Mountain Cycles Monstercross V4, '89 Novara Trionfo
With regard to cycling, carbon fiber can absolutely stand up to the same abuse overall.
I dont consider normal use to be 'abuse' though since, you know, that means something different.
A simple solution is to not abuse a bike's frame. Crazy idea, I know.
#18
Senior Member

Joined: Dec 2004
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From: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, Bacchetta Quattro, Catrike Speed
Looks like an upgrade to me. All materials can fail; I've seen chromo forks fail, too, without warning. I replaced an aluminum fork with a carbon one 5 years ago and it's been a great choice. I agree that the slammed seat probably means the frame is too big for OP and thus he's pouring money into a poorly-fitting bike.
#19

Unpressurized aircraft generally have component lifetimes measured in flight hours, if they have such a limit at all. That's why we still have DC-3/C-47s flying commercial operations around the globe at 80+ years old!
.
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'75 Fuji S-10S bought new, 52k+ miles and still going!
'84 Univega Gran Tourismo
'84 Univega Viva Sport
'86 Miyata 710
'90 Schwinn Woodlands
Unknown brand MTB of questionable lineage aka 'Mutt Trail Bike'
Plus or minus a few others from time-to-time
'75 Fuji S-10S bought new, 52k+ miles and still going!
'84 Univega Gran Tourismo
'84 Univega Viva Sport
'86 Miyata 710
'90 Schwinn Woodlands
Unknown brand MTB of questionable lineage aka 'Mutt Trail Bike'
Plus or minus a few others from time-to-time
#20
Banned
Joined: Feb 2008
Posts: 8,701
Likes: 2,506
From: Mississauga/Toronto, Ontario canada
Bikes: I have 3 singlespeed/fixed gear bikes
#21
Banned
Joined: Feb 2008
Posts: 8,701
Likes: 2,506
From: Mississauga/Toronto, Ontario canada
Bikes: I have 3 singlespeed/fixed gear bikes
Mountain biking through rock gardens, over tree roots, commuting on rough streets with pot holes, jumping curbs etc... Maybe not abuse but definitely heavy duty use. That's why I use heavy duty chromoly steel forks. I wouldn't use a carbon fork for my style of riding.
#22
Dirty Heathen

Joined: Oct 2015
Posts: 2,324
Likes: 1,046
From: MC-778, 6250 fsw
Bikes: 1997 Cannondale, 1976 Bridgestone, 1998 SoftRide, 1989 Klein, 1989 Black Lightning #0033
I've never quite figured out why everyone on BikeForums feels like they have to ride through every pothole instead of going around; is there some Rule about deviating from 'The Line' that I'm unaware of? Or why obstacles like that are such a big deal in the first place? Get your butt off the saddle, bend your knees, and shift your weight off the front wheel. Is Riding Light considered a dark art around here?
#23
climber has-been




Joined: Dec 2004
Posts: 9,192
Likes: 6,077
From: Palo Alto, CA
Bikes: Scott Addict RC Pro & R1, Felt Z1
There is no such limitation for carbon fiber.
Last edited by terrymorse; 06-05-21 at 09:16 AM.
#24
Thread Starter
Grouchy Old man
Joined: Feb 2013
Posts: 278
Likes: 50
From: Western NC.
Bikes: Diamond Back Insight 2, Gravity Basecamp mountain bike, GMC Denali Road Bike
#25
Thread Starter
Grouchy Old man
Joined: Feb 2013
Posts: 278
Likes: 50
From: Western NC.
Bikes: Diamond Back Insight 2, Gravity Basecamp mountain bike, GMC Denali Road Bike
Looks like an upgrade to me. All materials can fail; I've seen chromo forks fail, too, without warning. I replaced an aluminum fork with a carbon one 5 years ago and it's been a great choice. I agree that the slammed seat probably means the frame is too big for OP and thus he's pouring money into a poorly-fitting bike.





