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  1. #1
    "Clydesdale"
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    New question here. 29'er Rigid Fork Weight Restriction?

    Ok, so I'm considering taking the carbon plunge with my single speed but I'm being told by my buddies that the carbon won't hold my weight? I want to ad a carbon rigid fork, a set of FSA carbon bars, FSA carbon seat post, and FSA carbon stem. I weight 300 lbs and 6'1" , I have linebacker frame and I worry about breaking the carbon stuff. I'm wanting to remove weight to use the bike more on light trails to help my endurance. Any Thoughts?
    Last edited by gixxergino; 11-05-2013 at 10:19 PM.

  2. #2
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    Quote Originally Posted by gixxergino View Post
    Ok, so I'm considering taking the carbon plunge with my monocog but I'm being told by my buddies that the carbon won't hold my weight? I want to ad a carbon rigid fork, a set of FSA carbon bars, FSA carbon seat post, and FSA carbon stem. I weight 300 lbs and 6'1" , I have linebacker frame and I worry about breaking the carbon stuff. I'm wanting to remove weight to use the bike more on light trails to help my endurance. Any Thoughts?
    Listen to your buddies..............

  3. #3
    ballbuster
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    Yeah, I can't imagine that saving a tad of weight on the bike is going to do you much good. I'd say get a good quality steel fork, like a Surly Karate Monkey fork. It would probably hold up fine if you don't get air or plow through rock gardens, but it won't leave you much margin for error or crashes.

  4. #4
    "Clydesdale"
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    I want to remove the crap SR suntour fork up front either way for rigid since I ride with it locked out anyway. So I guess I will look into steel fork...

  5. #5
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    The more you weigh, the less it matters how much your bike weighs. After all, you have to propel both yourself and the bike uphill. So if you had a 30lb bike and dropped 5lbs off of it (usually very expensive to do) you would only decrease the total bike plus rider weight by about 1.5 percent. It's just not worth it.

    Also, you mention trying to improve your endurance. Making the bike lighter will not help you at all in that regard. Only riding will do that. If you mean that you want to lighten the bike so that you can go on longer rides at the same fitness level, that's not going to work either. You could build a carbon framed bike with all carbon parts on it and you still wouldn't gain much. Leave the bike alone and spend your money on something more useful.

  6. #6
    "Clydesdale"
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    Quote Originally Posted by Thor29 View Post
    The more you weigh, the less it matters how much your bike weighs. After all, you have to propel both yourself and the bike uphill. So if you had a 30lb bike and dropped 5lbs off of it (usually very expensive to do) you would only decrease the total bike plus rider weight by about 1.5 percent. It's just not worth it.

    Also, you mention trying to improve your endurance. Making the bike lighter will not help you at all in that regard. Only riding will do that. If you mean that you want to lighten the bike so that you can go on longer rides at the same fitness level, that's not going to work either. You could build a carbon framed bike with all carbon parts on it and you still wouldn't gain much. Leave the bike alone and spend your money on something more useful.
    Ok, let me rephrase this... I AM buying a rigid fork, carbon is the "popular" way to go. Some manufacturers like niner and WB don't put a weight restriction on the fork. Will I break a carbon fork, or just stick with steel or Ti ?

    As far as the Post, stem, and bars, they just look cool!

  7. #7
    "Clydesdale"
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    So... as far as steel goes. Surly is better than niner?

  8. #8
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    don't do it. Crabon is dangerous!

    Busted Carbon
    Veni Vidi Biki

    I came, I saw, I biked.

  9. #9
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    Quote Originally Posted by skankingbiker View Post
    don't do it. Crabon is dangerous!

    Busted Carbon
    Do they have a page for all the other materials or do other materials not fail?

  10. #10
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    Carbon is the strongest material you could possibly make a fork out of. The crucial factor is whether it's designed to take your weight and many carbon forks won't be because they're usually built to sacrifice some strength in pursuit of ultra light weight.

  11. #11
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    Quote Originally Posted by Hogdog View Post
    Carbon is the strongest material you could possibly make a fork out of. The crucial factor is whether it's designed to take your weight and many carbon forks won't be because they're usually built to sacrifice some strength in pursuit of ultra light weight.
    What he said

  12. #12
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    Quote Originally Posted by skankingbiker View Post
    don't do it. Crabon is dangerous!

    Busted Carbon
    There hasn't been a post since July 2011. So I guess carbon is strong stuff! ;-)

  13. #13
    ballbuster
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    Quote Originally Posted by skankingbiker View Post
    don't do it. Crabon is dangerous!

    Busted Carbon
    Aw, don't buy into the carbon fear.

    Quote Originally Posted by DeeZee View Post
    There hasn't been a post since July 2011. So I guess carbon is strong stuff! ;-)
    Also, you notice most of those breaks are from being hit by cars?

  14. #14
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    Quote Originally Posted by pimpbot View Post
    Aw, don't buy into the carbon fear.



    Also, you notice most of those breaks are from being hit by cars?
    Yea.....funny stuff

  15. #15
    "Clydesdale"
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    Cool-blue Rhythm

    Ok, I'm confused. Yes or NO for a guy my size on a carbon fork??? I don't need a battle of personal preference on what suits you guys. I need to know which way to go????

  16. #16
    ballbuster
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    Quote Originally Posted by gixxergino View Post
    Ok, I'm confused. Yes or NO for a guy my size on a carbon fork??? I don't need a battle of personal preference on what suits you guys. I need to know which way to go. Does someone make a aluminum rigid fork or just Ti, steel and carbon????
    I'm going to vote 'no'. Most carbon forks aren't going for beef, they are going for lightweight. I vote for steel. I don't know how light Niner makes their forks, but the Surly fork will be a brickshizhouse. Downside is, it's also a bit heavy for a rigid fork. That said, it will still be a full pound, if not two, lighter than your Suntour fork.

  17. #17
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    This thread is making my head hurt a little.

    As someone else pointed out, carbon has the best strength-to-weight ratio going for structural materials for bikes.

    OP, I think if you're worried, you should contact the manufacturer of the particular fork you want. I bet there will be a couple carbon forks with 180 lb weight limits and most manufacturers will say you're fine.
    "Don't buy upgrades; ride up grades." -Eddy Merckx

  18. #18
    "Clydesdale"
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    Quote Originally Posted by AndrwSwitch View Post
    This thread is making my head hurt a little.
    Uh, yeah. That's why I'm like ????

    I think I'm going to go with this:

    Exotic Rigid Alu MTB Bike Fork 29er Disc Specific 46 5 | eBay

  19. #19
    San Miguel Beer Drinker
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    i second the vote for the surly fork (KM/Ogre). i like the ogre fork better (more bottle mounts)

    you mentioned that your bike is a monocog? the monocog rigid fork looks beefy as well.

  20. #20
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    29'er Rigid Fork Weight Restriction?

    Quote Originally Posted by IstongKowldPaRin View Post
    i second the vote for the surly fork (KM/Ogre). i like the ogre fork better (more bottle mounts)

    you mentioned that your bike is a monocog? the monocog rigid fork looks beefy as well.
    I would contact someone who builds forks. I would bet good money that a Walt works or a type 2 is going to ride better than any carbon fork at your weight. I know my type 2 rides better than any fork I have ever ridden, aluminum, carbon or titanium and I am only 175lbs so I didn't need custom by any means.

  21. #21
    "Clydesdale"
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    Quote Originally Posted by AKamp View Post
    I would contact someone who builds forks. I would bet good money that a Walt works or a type 2 is going to ride better than any carbon fork at your weight. I know my type 2 rides better than any fork I have ever ridden, aluminum, carbon or titanium and I am only 175lbs so I didn't need custom by any means.
    6-8 weeks to build once you've made it through his 40+ people in line...

    At that pace, I should get it in 2016...LOL

  22. #22
    Elitest thrill junkie
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    There are some good carbon bars to choose from, Answer Protaper, Envy, etc. My protaper is 780mm wide and 250g. It's a "downhill" bar, so it's not super light, it is super-strong though with thick carbon layup at the ends.

    As for a strong rigid fork, my On-One fatty fork is 2.8lbs of steel, seems pretty strong, done a lot of jumping on it, etc. This fork could work just fine in a 29er, as long as you get the 135mm front hub for it.

    SRAM makes carbon XX1 downhill cranks, again, probably perfect for you.

    Being that heavy does limit you in terms of choices. It's not a red line in terms of component materials that you can't cross, but it does mean you have to think about what they were designed for.
    "It's only when you stand over it, you know, when you physically stand over the bike, that then you say 'hey, I don't have much stand over height', you know"-T. Ellsworth

    You're turning black metallic.

  23. #23
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    Quote Originally Posted by gixxergino View Post
    Nothing wrong with that apart from I can't see a max rider weight listed (there may not be one) and at your size you really need to check regardless of material, alot of manufacturers won't warranty forks for riders bigger than 220lbs.

  24. #24
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    Quote Originally Posted by gixxergino View Post
    I would stick to steel.
    Salsa, Surly, On-One.
    Belgian beer and Scotch whisky.

  25. #25
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    Quote Originally Posted by gixxergino View Post
    Ok, I'm confused. Yes or NO for a guy my size on a carbon fork??? I don't need a battle of personal preference on what suits you guys. I need to know which way to go????



    At that weight I think a lot of it depends on (1). how you ride, and (2). stick with a reputable company. But then again I've seen too many steel break also, both frames and forks.

    I've been riding nothing but carbon forks for the last four years and at my heaviest I was 270 (6'2"), not including gear. I rode a White Bros. for the longest, and just recently started riding a Trigon which btw feels pretty friggin solid. Now, with that said, I don't do downhill thunder runs, rockgardens, or huck myself off cliffs. Anymore, at my age, I'm perfectly content with mild xc, singletrack, and in addition I try to do 200-kilometers a week on road/paved trails/commuting just for the exercise benefit.

    I think bottom line is anything upwards of 240 or more and you should probably avoid trying mimic that 140-pound youngster that's blasting down the side of a mountain...carbon, steel, ti, whatever...something's bound to break.

    Carbon seatposts, stems, and bars on the other hand, I'm just not as confident in 'em. They simply not as beefy as any of the forks I've seen. I wouldn't trust them for a clyde, imo.

    My dos centavos.

  26. #26
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    Quote Originally Posted by gixxergino View Post
    I want to remove the crap SR suntour fork up front either way for rigid since I ride with it locked out anyway. So I guess I will look into steel fork...
    Is the current fork tapered?

    I would think at your weight a through bolt or through axle would also be a good idea using a rigid fork.

  27. #27
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    Whiskey Parts co have a nice looking fork that is rated for riders up to 350lbs.

    Forks | Whisky Parts Co.

    However, I have just been through the steel or carbon conundrum and plumped for steel. YMMV.

  28. #28
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    Quote Originally Posted by firedfromthecircus View Post
    Whiskey Parts co have a nice looking fork that is rated for riders up to 350lbs.

    Forks | Whisky Parts Co.

    However, I have just been through the steel or carbon conundrum and plumped for steel. YMMV.
    I have seen their bars at the LBS but didn't know they made forks.....NICE!

  29. #29
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    Like others have mentioned. I think you need to worry more about durability and strength and less about weight. I thought the niner carbon fork has a weight limit of 240. Carbon is extremely strong pound for pound, but like others have said, it is often designed/made for racers often weighing under 170 pounds. It makes sense. If you weigh 150 pounds why would you want to ride a clunky (heavier) fork that is rated for over 300 pounds.

    Also as other has mentioned. As the body weight increases, the bike weight makes less difference. It is simple physics.

    You mentioned a carbon stem. Don't waste your money or time with them. You will not see any benefit compared to Al. As far as a carbon bar. You might be able to go with a DH bar that might be strong enough, but I would check with the manufacturer first.

    Here is an interesting reads about big and tall riders.
    Technical FAQ: Designing frames and components for big riders - VeloNews.com

    Any material can be made as light and compliant and less durable or as strong and stiff and more durable as a manufacturer wants. They all have their own tradeoffs of beauty, cost, weight, strength, and number of cycles they can take before fatigue. I would just like to voice the opinions of others that carbon items are often made more in the light and compliant department for racers.

    I couldn't say what the most durable fork is, but something steel and heavy is probably your best bet as they aren't appealing to the weight weenie / racer crowd.

  30. #30
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    Quote Originally Posted by gixxergino View Post
    I want to remove the crap SR suntour fork up front either way for rigid since I ride with it locked out anyway. So I guess I will look into steel fork...
    I would say you are on the right track getting rid of that Suntour fork. On the same token it sounds like you want to spend a ton of money on carbon components on a low end bike that came with a Suntour fork. I would forget carbon altogether, throw a steel fork on it and enjoy.

  31. #31
    Big Boy
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    If you can afford it, and want a lighter bike go with carbon. I've got a niner carbon fork and thomson carbon bar on my rigid SS. I weigh 280#. IMO opinion if you do something that would break a niner carbon fork, then any other fork would have broken as well.

    I know that losing a couple pounds on my bike doesn't matter much because I'm overweight, but I enjoy having a relatively light bike, and it makes it more fun for me to ride so I ride more.

    I personally would stay away from carbon stems though, because they don't give any real advantage of stiffness or weight, and they cost a lot more.
    -It's time to shred some mild to moderate gnar!!

  32. #32
    "Clydesdale"
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    Ok, there might be a little confusion. This bike is my endurance XC bike, to help me become a better rider on my Orbea occum 29 H20. Not my downhill/freeride bike.

    The fork I have now is trash, it is a non- tapered 1-1/8" straight shaft. At this point I just want to replace it with a quality rigid fork. I don't like the look of the surly fork, looks like it rolled straight out of the 80's. I don't care if you can run over it with a car, design matters to me too. I Really like the look of white brothers, but they don't have the weight requirements.

  33. #33
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    Quote Originally Posted by gixxergino View Post
    Ok, there might be a little confusion. This bike is my endurance XC bike, to help me become a better rider on my Orbea occum 29 H20. Not my downhill/freeride bike.

    The fork I have now is trash, it is a non- tapered 1-1/8" straight shaft. At this point I just want to replace it with a quality rigid fork. I don't like the look of the surly fork, looks like it rolled straight out of the 80's. I don't care if you can run over it with a car, design matters to me too. I Really like the look of white brothers, but they don't have the weight requirements.
    I've been running the full CF Niner fork for a while now, but then again, I don't weigh anymore at 60 now then I did as a senior in High School, and trail riding has at least something to do with it. I'm sure it will be at least as beneficial for you as it's been for me over the last 20 years. Just avoid crashes, and the too-light components that might be involvled , as in a sudden, catastrophic failure.

    Aside from the fork, (some forks, the ones that have no rider weight limits) I think some of the other carbon stuff you listed could be questionable for your weight; the seatpost, especially. I would suggest you re-think that one.

    I don't like the mental picture that a sudden catastrophic carbon seatpost failure paints, not a bit!

  34. #34
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    Quote Originally Posted by gixxergino View Post
    Ok, there might be a little confusion. This bike is my endurance XC bike, to help me become a better rider on my Orbea occum 29 H20. Not my downhill/freeride bike.

    The fork I have now is trash, it is a non- tapered 1-1/8" straight shaft. At this point I just want to replace it with a quality rigid fork. I don't like the look of the surly fork, looks like it rolled straight out of the 80's. I don't care if you can run over it with a car, design matters to me too. I Really like the look of white brothers, but they don't have the weight requirements.
    Orbea describes the Occam 29 as a endurance XC bike. Specs certainly look like that... It seems like you could just ride it?
    "Don't buy upgrades; ride up grades." -Eddy Merckx

  35. #35
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    My LBS built up an XTC Advanced with that fork and Sun Ringle Black flag Pros. I think the build came to 24 pounds or slightly less. It was a sweet, stiff race ride that could take a bit of a XC-style beating. Dunno how it would handle a true clyde, but guys weighing ~200 did OK on it.

    Quote Originally Posted by DeeZee View Post
    I have seen their bars at the LBS but didn't know they made forks.....NICE!

  36. #36
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    Quote Originally Posted by gixxergino View Post
    Uh, yeah. That's why I'm like ????

    I think I'm going to go with this:

    Exotic Rigid Alu MTB Bike Fork 29er Disc Specific 46 5 | eBay
    I'm not even 190# and I can't convince myself that anything but steel will hold up.

    My buddy had a rigid aluminum fork once.
    Once.

    The White Bros. carbons look awesome, but I still can't get my head around that either.

    Now if I were ~300# I'd be looking into tandem-rated components like a Surly Instigator fork. If it's long enough for your frame, you will have no problems. That is, unless your front wheel is weaker than your new fork.

    -F
    It's never easier - you just go faster.

  37. #37
    "Clydesdale"
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    Quote Originally Posted by AndrwSwitch View Post
    Orbea describes the Occam 29 as a endurance XC bike. Specs certainly look like that... It seems like you could just ride it?
    Yeah, but in Houston we don't have a lot of hills. So I ride my Occam for the more technical stuff and the SS for the simple trails. I like having the option, and the SS makes me a better rider on the Occam.

    I guess I'm just going to replace the suntour fork with a air fork of some sort...

  38. #38
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    Just buy the lightest, fanciest carbon fork your money can buy and ride it. ride it hard. Don't worry, it won't fail on you.

    There you go, that's wat you want to hear, isn't it ?
    Belgian beer and Scotch whisky.

  39. #39
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    If you do air, make sure to get a fancy enough fork to have a compression damper. Maybe a lockout or threshold feature too.
    "Don't buy upgrades; ride up grades." -Eddy Merckx

  40. #40
    "Clydesdale"
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    ... and if we just ...

    Quote Originally Posted by thasingletrackmastah View Post
    There you go, that's wat you want to hear, isn't it ?
    Naw not really, if i wanted to hear nonsense I would talk with my wife...LOL


    I was hoping there was some biggin's like me riding carbon, but like I said just going to go a different route, maybe a rockshox reba...

  41. #41
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    You'd be surprised how many 250 lb weight weenies there are. I bet if you asked in the Clydes or Weight Weenies forums, you could find someone to tell you to go for it. Did you ever email any of the manufacturers?
    "Don't buy upgrades; ride up grades." -Eddy Merckx

  42. #42
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    There's no weight limit on the Niner RDO fork.

  43. #43
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    The Whiskey fork will also fit the bill for you. But for that price just go but a manitou tower pro for $300 and lock that damn thing out.. easy peasy

  44. #44
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    Quote Originally Posted by jkidd_39 View Post
    The Whiskey fork will also fit the bill for you. But for that price just go but a manitou tower pro for $300 and lock that damn thing out.. easy peasy
    Not even sort of the same thing

  45. #45
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    29'er Rigid Fork Weight Restriction?

    Quote Originally Posted by razardica View Post
    Not even sort of the same thing
    Then go drop $500 on a whiskey. Or $3xx on a niner.

    The options out there are few and far between but I think any of the forks mentioned would be great.

    And I personally would give a well set up fork a chance before I go rigid. It's amazing how efficient a well set up suspension can do.

  46. #46
    Fat-tired Roadie Moderator
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    I think there's a lot to be said for riding trails rigid. I used to practice on my 'cross bike sometimes - I think it's made me a lot better at picking lines and adjusting my weight distribution.
    "Don't buy upgrades; ride up grades." -Eddy Merckx

  47. #47
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    Quote Originally Posted by gixxergino View Post
    I was hoping there was some biggin's like me riding carbon
    I'm a "biggin" (280#) and I ride a carbon fork, and a carbon bar. No problems so far.
    -It's time to shred some mild to moderate gnar!!

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