Advertise on Bikeforums.net



User Tag List

Results 1 to 15 of 15
  1. #1
    In Training gtbii's Avatar
    Join Date
    May 2009
    Location
    Southwest Missouri
    My Bikes
    2007 Redline R550
    Posts
    8
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Can my bike hold up under a fat kid?

    I'm completely new to this. I used to do a lot of BMX but that was 15 years ago. I recently bought a 2008 Redline R550 and I don't know if it the components are ok for a fat kid or not. I'm 5'10, 279lbs. I honestly don't know what a lot of this means yet. I can tell you that I don't like the cages on the pedals, I want to look into clipons, or clipins or whatever they're called. So far the saddle isn't very comfortable, but I have only ridden about 20miles on it, so I'm hoping it brakes in some.

    Here are the specs on the bike

    FRAME 6061 alloy double butted 130mm
    spacing

    FORK Carbon fiber with eyelets

    HEADSET FSA Intergrated

    F.DERAIL Shimano 31.8mm

    R.DERAIL Shimano Sora 9sp

    SHIFTERS Shimano trigger 9sp

    CRANKSET FSA 30/39/50T

    BB FSA square taper 68 x 116mm

    CASSETTE SRAM 950 11-26T 9sp

    PEDALS Alloy road

    WHEELSET Alex AKX- R1 28H, 32H

    TIRES Kenda Kwest 700 x 25

    BRAKE Tektro 730 Dual Pivot caliper

    BRAKE LVR Tektro

    BAR Redline Flat 31.8mm

    STEM Redline alloy 31.8mm

    SADDLE Velo plush

    POST Redline alloy 27.2 x 350mm
    To the uneducated an A is just three sticks... - Eeyore

  2. #2
    The Site Administrator: Currently at home recovering from a couple of strokes,please contact my assistnt admins for forum issues Tom Stormcrowe's Avatar
    Join Date
    Mar 2006
    Location
    South Florida
    My Bikes
    Techna Wheelchair and a Sun EZ 3 Recumbent Trike
    Posts
    16,012
    Mentioned
    10 Post(s)
    Tagged
    4 Thread(s)
    everything but the wheels. Alex "A" wheels tend to suddenly fail with no warning. The only thing I'd chance would be to lace on a pair of velocity Deep V''s or equivalent rims to your hubs.
    on light duty due to illness; please contact my assistants for forum issues. They are Siu Blue Wind, or CbadRider or the other 3 star folk. I am currently at home recovering from a couple of strokes. I am making good progress, happily.


    . “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche

    "We can judge the heart of a man by his treatment of animals." - Immanuel Kant

  3. #3
    Senior Member
    Join Date
    Feb 2009
    Location
    Chicago 'burbs
    Posts
    216
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I have that exact wheelset on my Jamis Allegro, and I was a little heavier than you when I bought it. I broke spokes on the rear wheel a number of times until the dealer who sold it to me stripped it and rebuilt the whole wheel by hand with new, better spokes. Since then I have had zero trouble with it. You might be able to use what you've got.

    I agree with Tom that the rest of your bike should be fine. If you decide you want a stronger set of wheels, the Deep V's are a great way to go. Consider getting a new rear wheel. The price probably won't be much different once you've paid for spokes and labor, and you'll have a spare in the closet.

    Keep asking questions here, listen to Tom, and ride that bike!
    __________________________________________________________________
    Shrinking steadily

  4. #4
    Senior Member
    Join Date
    Apr 2009
    Location
    Boulder County, CO
    My Bikes
    '89 66cm Cannondale 3.0, '92 22" Cannondale M2000, '92 JxL Cannondale R1000 Tandem, '86 Cannondale ST800 27" (68.5cm) Touring bike w/Superbe Pro components and Phil Wood hubs.
    Posts
    786
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    At 300lbs I'd look to something a little more stout than the Deep-V.

    You're going to run at least 700x28 tires due to your weight. I'd recommend Continental TopContact tires. They'll wear like iron, otherwise you'll be going through tires like you wouldn't believe. Its not even tread wear, but with weight you'll wear out the casing before the actual tread. Also make sure you get the wire bead. No real Clydesdale (I'm not talking those of you hovering around 200lbs) should be running folding tires, but using a good solid wire bead. A folding tire can come completely off the clincher rim and get you killed.

    The Deep-V is just too narrow to mount anything wider than a 700x25 on. Instead look to build your rear wheel out of a Chukker instead. Its 5mm wider and has an additional 2mm of deep section wall. You'll probably want to get a 48h rear hub, or at least a 40h.

    At that weight the real problem isn't the rim not being strong enough, but the spokes being inadequate. With inadequate spoke bracing the wheel compresses and on each revolution the spokes lose tension and overtension. There are varying opinions about whether to use straight 14g spokes, or even to use 14/15g with heavier riders. Brandt believed that the double butted spokes helped to avoid spoke breakage and was a good solution. However, in my experience heavier riders need their wheels to be tensioned properly to high tension. Double butted spokes allow the wheel to lose tension as the rim deforms above the contact patch of the tire.

    Otherwise, 300lbs isn't outrageous for your equipment. However, keep a close eye on your bars and your front fork. Pull the steerer on your fork and inspect it at least once a season. Lightweight handlebars should be replaced, without exception, if the bike is ever crashed, or even falls over onto the bars, with a heavy rider.

  5. #5
    creaky old bones FZ1Tom's Avatar
    Join Date
    Feb 2009
    Location
    Springfield, Misery
    My Bikes
    Trek 7200
    Posts
    267
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I can't add any advice about your bike or rims, but.....hello from Springtown! You tried the South Creek or Galloway Trails yet?

    Tom

  6. #6
    Downtown Spanky Brown bautieri's Avatar
    Join Date
    May 2007
    Location
    Camp Hill, Pennsyltucky
    My Bikes
    07 Raliegh Grand Sport 98ish Mongoose Manuever
    Posts
    2,099
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by mtnbke View Post
    At 300lbs I'd look to something a little more stout than the Deep-V.

    You're going to run at least 700x28 tires due to your weight. I'd recommend Continental TopContact tires. They'll wear like iron, otherwise you'll be going through tires like you wouldn't believe. Its not even tread wear, but with weight you'll wear out the casing before the actual tread. Also make sure you get the wire bead. No real Clydesdale (I'm not talking those of you hovering around 200lbs) should be running folding tires, but using a good solid wire bead. A folding tire can come completely off the clincher rim and get you killed.

    The Deep-V is just too narrow to mount anything wider than a 700x25 on. Instead look to build your rear wheel out of a Chukker instead. Its 5mm wider and has an additional 2mm of deep section wall. You'll probably want to get a 48h rear hub, or at least a 40h.

    At that weight the real problem isn't the rim not being strong enough, but the spokes being inadequate. With inadequate spoke bracing the wheel compresses and on each revolution the spokes lose tension and overtension. There are varying opinions about whether to use straight 14g spokes, or even to use 14/15g with heavier riders. Brandt believed that the double butted spokes helped to avoid spoke breakage and was a good solution. However, in my experience heavier riders need their wheels to be tensioned properly to high tension. Double butted spokes allow the wheel to lose tension as the rim deforms above the contact patch of the tire.

    Otherwise, 300lbs isn't outrageous for your equipment. However, keep a close eye on your bars and your front fork. Pull the steerer on your fork and inspect it at least once a season. Lightweight handlebars should be replaced, without exception, if the bike is ever crashed, or even falls over onto the bars, with a heavy rider.
    See this ^^^^ Ignore it. What a complete and utter load of fear mongering mixed with bull honkey.

    Seriously...a 48 rear wheel with 15ga spokes? Maybe if he was closer to 500lbs. That wheel would cost almost as much as he spent on his bike altogether. OP: Pay close attention to your wheels. After 300 miles take your bike into a shop to have the wheels retrued and retentioned. If you take care to avoid potholes and other debris you should be ok for quite some time. Ride the wheels you have until they are no longer serviceable then look into an upgrade. It's foolish to throw money at a problem that "may" arise.

    700 x 25s and even 23's (gasp) will be just fine. Make sure your tires are properly inflated before each ride and you won't have an issue. Just ask the plethora of clydes around here (even the ones over 300lbs) who run 23's.

    A tire coming off the bead is no different than having a flat. Show of hands, who has ever had a flat while riding? Ok, who died as a result of it? BTW, if a tire is going to hop off the bead it will be when you inflate it, usually after changing a tube.

  7. #7
    Senior Member
    Join Date
    Mar 2009
    My Bikes
    Novara Divano 2009
    Posts
    190
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I started riding at 309 lbs and had 2 alex ALX200 wheels on my bike. In the 300-400 miles I have put on it I have had no busted spokes (fingers crossed I dont jinx myself). I am now 260ish and keeping my eyes open to avoid pot holes etc. The only wheel issue I have had was the rear wheel having to be replaced (under warranty and for a shimano R500) bue to the free wheel/hub being messed up and needing replaced.

  8. #8
    In Training gtbii's Avatar
    Join Date
    May 2009
    Location
    Southwest Missouri
    My Bikes
    2007 Redline R550
    Posts
    8
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by FZ1Tom View Post
    I can't add any advice about your bike or rims, but.....hello from Springtown! You tried the South Creek or Galloway Trails yet?

    Tom
    Tom, I'm in Joplin. I haven't tried any trails yet. I've been staying to streets, mostly in my neighborhood, today I actually ventured out onto the city streets. The 7.3 miles I rode today has been my longest ride yet.
    To the uneducated an A is just three sticks... - Eeyore

  9. #9
    Senior Member
    Join Date
    Apr 2009
    Location
    Boulder County, CO
    My Bikes
    '89 66cm Cannondale 3.0, '92 22" Cannondale M2000, '92 JxL Cannondale R1000 Tandem, '86 Cannondale ST800 27" (68.5cm) Touring bike w/Superbe Pro components and Phil Wood hubs.
    Posts
    786
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by bautieri View Post
    See this ^^^^ Ignore it. What a complete and utter load of fear mongering mixed with bull honkey.

    Seriously...a 48 rear wheel with 15ga spokes? Maybe if he was closer to 500lbs. That wheel would cost almost as much as he spent on his bike altogether. OP: Pay close attention to your wheels. After 300 miles take your bike into a shop to have the wheels retrued and retentioned. If you take care to avoid potholes and other debris you should be ok for quite some time. Ride the wheels you have until they are no longer serviceable then look into an upgrade. It's foolish to throw money at a problem that "may" arise.

    700 x 25s and even 23's (gasp) will be just fine. Make sure your tires are properly inflated before each ride and you won't have an issue. Just ask the plethora of clydes around here (even the ones over 300lbs) who run 23's.

    A tire coming off the bead is no different than having a flat. Show of hands, who has ever had a flat while riding? Ok, who died as a result of it? BTW, if a tire is going to hop off the bead it will be when you inflate it, usually after changing a tube.
    At over 300lbs if you try to ride with 23s you'll have constant flats and go through tires faster than your walllet will allow. Ignore the advice of Clydesdale groupies. Around here they get the title Clydesdale if they are over 200lbs.

    Heck at 205lbs I used to have a 36 inch vertical and could dunk flat footed. I Clydesdale I wasn't...

    I've been having problems with a Velocity Dyad with 48 drill on 14/15 spokes at 375lbs.

    Again, there are Clydesdales and groupies. Being a fat cyclist does not a Clydesdale make. A Clydesdale is a big, powerful workhorse animal, not a fat little pony.

  10. #10
    Bikezilla Mazama's Avatar
    Join Date
    Aug 2007
    Location
    Flori-Duh
    My Bikes
    Co-Motion Mazama
    Posts
    881
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I don't like the words; carbon fiber, clyde and BMX used in a sentence.
    14,000 miles and rolling...

  11. #11
    Senior Member
    Join Date
    Dec 2007
    Location
    Virginia Beach, VA
    My Bikes
    2006 Giant OCR Limited
    Posts
    479
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by bautieri View Post
    OP: Pay close attention to your wheels. After 300 miles take your bike into a shop to have the wheels retrued and retentioned. If you take care to avoid potholes and other debris you should be ok for quite some time. Ride the wheels you have until they are no longer serviceable then look into an upgrade. It's foolish to throw money at a problem that "may" arise.

    700 x 25s and even 23's (gasp) will be just fine. Make sure your tires are properly inflated before each ride and you won't have an issue. Just ask the plethora of clydes around here (even the ones over 300lbs) who run 23's.

    A tire coming off the bead is no different than having a flat. Show of hands, who has ever had a flat while riding? Ok, who died as a result of it? BTW, if a tire is going to hop off the bead it will be when you inflate it, usually after changing a tube.
    +1.
    I'm 5'10" and 250 ish. At 279# you aren't much bigger than me. I ride a carbon frame with 20/24 spoke wheels. Yes, I also have 23s on those low spoke wheels.
    From my experience I heartily agree with bautieri. Getting the wheels trued and retensioned by a competent wheelbuilder after a few hundred miles will go a long way in preventing wheel problems.
    Last edited by Bone Head; 06-15-09 at 04:22 AM.
    You're only given a little spark of madness. You mustn't lose it. - Robin Williams

    Never be frightenend to walk out of step with others because you will walk on ground no one else touches

    Remember, hard work pays off later but procastination pays off now!

    My Rides: '06 Giant OCR Limited & '95 GT OUTPOST

  12. #12
    Senior Member
    Join Date
    Jan 2008
    Location
    up the hill
    My Bikes
    TREK Madone 5.2, TREK 1200, Jamis Aurora, Specialized Rockhopper
    Posts
    50
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    See this ^^^^ Ignore it. What a complete and utter load of fear mongering mixed with bull honkey.
    Be honest tell us what you feel!

  13. #13
    The Site Administrator: Currently at home recovering from a couple of strokes,please contact my assistnt admins for forum issues Tom Stormcrowe's Avatar
    Join Date
    Mar 2006
    Location
    South Florida
    My Bikes
    Techna Wheelchair and a Sun EZ 3 Recumbent Trike
    Posts
    16,012
    Mentioned
    10 Post(s)
    Tagged
    4 Thread(s)
    Quote Originally Posted by mtnbke View Post
    At over 300lbs if you try to ride with 23s you'll have constant flats and go through tires faster than your walllet will allow. Ignore the advice of Clydesdale groupies. Around here they get the title Clydesdale if they are over 200lbs.

    Heck at 205lbs I used to have a 36 inch vertical and could dunk flat footed. I Clydesdale I wasn't...

    I've been having problems with a Velocity Dyad with 48 drill on 14/15 spokes at 375lbs.

    Again, there are Clydesdales and groupies. Being a fat cyclist does not a Clydesdale make. A Clydesdale is a big, powerful workhorse animal, not a fat little pony.
    I have a wee bit of an idea as to how to build a wheel for a Clyde, considering that 4 years back, I was 581 lbs and riding with oxygen. The main issue is to keep the spokes tensioned properly, and don't rely on machine tensioning. jaxgtr has been running Deep V's for 2 years and just finally lost a spoke. He spent most of that time over 300. mazama is running deep v's and is over 300, and also is just a short little feller at 7 feet.

    I started my deep v's at over 300 pounds, and have two years into them, losing down to 199, by the way. My wheels are still true and strong after 3300 miles.

    As to the tires, look at Soma Everwears in 700X26. 5 mm extra rubber in the tread area, and very flat resistant. I have yet to flat on them, and I ride some fairly rough chipseal roads, primarily. You'll find they wear like iron, and are still good at cornering and a bit o snap.
    on light duty due to illness; please contact my assistants for forum issues. They are Siu Blue Wind, or CbadRider or the other 3 star folk. I am currently at home recovering from a couple of strokes. I am making good progress, happily.


    . “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche

    "We can judge the heart of a man by his treatment of animals." - Immanuel Kant

  14. #14
    Downtown Spanky Brown bautieri's Avatar
    Join Date
    May 2007
    Location
    Camp Hill, Pennsyltucky
    My Bikes
    07 Raliegh Grand Sport 98ish Mongoose Manuever
    Posts
    2,099
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by mtnbke View Post
    At over 300lbs if you try to ride with 23s you'll have constant flats and go through tires faster than your walllet will allow. Ignore the advice of Clydesdale groupies. Around here they get the title Clydesdale if they are over 200lbs.
    Got a citation for this one or are we busy pulling crap numbers? Do you have any real world expirience with this or are you spouting off the garbage the salesman told you to upsell you into a Dyad? A Dyad is also a popular 29er rim so if by chance you are running a 29er as your user name implys, please enlighten us on your expirience with 23s. Accelerated wear, hardly. Buy a quality set of rubber and you won't have that issue.

    Quote Originally Posted by mtnbke View Post
    Heck at 205lbs I used to have a 36 inch vertical and could dunk flat footed. I Clydesdale I wasn't...
    A clydesdale you were. Clydesdale is a classification of riders that traces it's origins to triathlons. It is not fair to put someone who is 150lbs in the same race category as someone who is 250lbs even if both are at 10% body fat. I'm nut sure why they drew in the line in the sand at 200lbs but they did and that is where it stands. Just like it wouldn't be much of a boxing match to have a featherweight fight a heavyweight. So lets let X = your bodyweight. If X > 200lbs then you're a clydesdale regardless of your body fat %. Also clydesdale applys to folks over 6' tall regardless of bodyweight.

    Quote Originally Posted by mtnbke View Post
    I've been having problems with a Velocity Dyad with 48 drill on 14/15 spokes at 375lbs.

    Again, there are Clydesdales and groupies. Being a fat cyclist does not a Clydesdale make. A Clydesdale is a big, powerful workhorse animal, not a fat little pony.
    Ok, so your pushing 400lbs and having issues with your wheels. When was the last time they were completely de-stressed and retentioned? How many miles are on this wheelset? Who built it? Are your issues with spokes popping or keeping the tire true? A 48 spoke Dyad (are you on a 29er or a road bike?) should have no issue holding up under you provided you are not busy hopping off curbs, bombing across cobbles, riding on the sidewalk, and avoiding as many potholes as possible. If you cannot avoid a pothole make sure you get up out of your saddle and let your knees and arms act like shock absorbers. What is your bike frame made out of? What style of riding do you do? What is the most common trail surface you encounter? If you can answer these questions we might just be able to help you out with your wheel problems.

    BTW, I'm 5'8'' 205lbs with 15% body fat down from a high of 250lbs. I can flat foot dunk as well. I'm not sure if that makes me a groupie, a wannabe, fat cyclist, or simply a fat little pony. Please clear this up for me. Inquiring minds and whatnot.

  15. #15
    Downtown Spanky Brown bautieri's Avatar
    Join Date
    May 2007
    Location
    Camp Hill, Pennsyltucky
    My Bikes
    07 Raliegh Grand Sport 98ish Mongoose Manuever
    Posts
    2,099
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by DanoC View Post
    Be honest tell us what you feel!
    Now remember, you said to be honest.

    Right now my briefs are rubbing this nasty little boil I have at the top my thigh in that little seam that runs between my sack and my crack. Right now it's more of a burning than a stinging feeling, it throbs a bit. I'm a little hungry, my new wallet is digging my right butt cheek in a rather unpleasant manor which forces me to shift more of my weight onto my left cheek. Also my tongue is burnt from this mornings coffee.

    How you doin ?
    Last edited by bautieri; 06-19-09 at 05:59 AM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •