Advertise on Bikeforums.net



User Tag List

Results 1 to 22 of 22
  1. #1
    RIP Sonny RaleighSport's Avatar
    Join Date
    Jun 2011
    Location
    STS
    My Bikes
    Leader 725, Centurion Turbo, Scwhinn Tempo, Schwinn Premis, GT Tequesta, Bridgestone CB-2
    Posts
    6,224
    Mentioned
    33 Post(s)
    Tagged
    0 Thread(s)

    Home made full chain guard?

    I'm in the process of converting a bike to SS, but also as a bad weather commuter.. coaster brake, looking into full fender/mudguard kit, and I was thinking I wan the chain to be semi protected from the water too.. I recalled those old full cage chain guards they used on the old 3 speeds/dynamo hub wheels etc.. and I want something similar though not such big heavy steel.. can I just use sheet metal, maybe fiber glass? Anyone got ideas etc? Maybe a cheap modern day vendor?
    "Seriously is what I want to be, so I put on spandex and show off my gear, my junk, my thing, yes my ding-a-ling."

  2. #2
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    3,416
    Mentioned
    50 Post(s)
    Tagged
    0 Thread(s)
    Hebie Chainglider, German , made to fit 38 and 42 T chainrings, and Nexus or Rohloff hubs.
    it's a mix and match of 4 parts..

    Lots of BMX bikes ship with a plastic chainguard, not installed, as kids hate them.
    see if one of those is in a bin at your LBS, that may do adequately..

  3. #3
    RIP Sonny RaleighSport's Avatar
    Join Date
    Jun 2011
    Location
    STS
    My Bikes
    Leader 725, Centurion Turbo, Scwhinn Tempo, Schwinn Premis, GT Tequesta, Bridgestone CB-2
    Posts
    6,224
    Mentioned
    33 Post(s)
    Tagged
    0 Thread(s)
    ... I found this...ummmm http://www.amazon.com/BioLogic-Freed...5511402&sr=1-1 I'm not sure if I like it or it scares me.
    "Seriously is what I want to be, so I put on spandex and show off my gear, my junk, my thing, yes my ding-a-ling."

  4. #4
    Senior Member
    Join Date
    May 2010
    Posts
    461
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    One problem with covers like the Hebie Chainglider is that they really only fit a chainwheel and cog of one specific size. Your bike has to adapt to the chain case, not the other way around.

  5. #5
    Passista Reynolds's Avatar
    Join Date
    Jul 2005
    My Bikes
    1998 Pinarello Asolo, 1992 KHS Montaņa pro, 1980 Raleigh DL-1, IGH Hybrid, IGH Utility
    Posts
    4,641
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Some Dutch bicyles have chainguards made from a metal structure with a leatherette cover, IIRC.

  6. #6
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    26,180
    Mentioned
    14 Post(s)
    Tagged
    0 Thread(s)
    If you are handy with sheet metal fabrication, you could customize one from thin gauge aluminum sheet and hose clamps.

  7. #7
    RIP Sonny RaleighSport's Avatar
    Join Date
    Jun 2011
    Location
    STS
    My Bikes
    Leader 725, Centurion Turbo, Scwhinn Tempo, Schwinn Premis, GT Tequesta, Bridgestone CB-2
    Posts
    6,224
    Mentioned
    33 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by HillRider View Post
    If you are handy with sheet metal fabrication, you could customize one from thin gauge aluminum sheet and hose clamps.
    that's orginally what I was thinking.. and am leaning back towards since I can't find out anything about that weird chain cover.
    "Seriously is what I want to be, so I put on spandex and show off my gear, my junk, my thing, yes my ding-a-ling."

  8. #8
    Senior Member dougmc's Avatar
    Join Date
    Jul 2008
    Location
    Austin, TX
    My Bikes
    Giant OCR2, Bridgestone RB-T, Bike-E, Vision R-40, Novara Safari
    Posts
    3,018
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by RaleighSport View Post
    ... I found this...ummmm http://www.amazon.com/BioLogic-Freed...5511402&sr=1-1 I'm not sure if I like it or it scares me.
    I've seen something like that (more precisely, looks like exactly that) that on a commuter folding bike. Looked pretty nice. Really nice, actually.

    Though of course the downside is that it won't work on a bike with derailleurs -- only single speeds or hub hear bikes. And I'm not sure how it adapts to changing chain lengths. (OK, looking at the picture, I see how it does -- there's just a small gap.)

  9. #9
    RIP Sonny RaleighSport's Avatar
    Join Date
    Jun 2011
    Location
    STS
    My Bikes
    Leader 725, Centurion Turbo, Scwhinn Tempo, Schwinn Premis, GT Tequesta, Bridgestone CB-2
    Posts
    6,224
    Mentioned
    33 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by dougmc View Post
    I've seen something like that (more precisely, looks like exactly that) that on a commuter folding bike. Looked pretty nice. Really nice, actually.

    Though of course the downside is that it won't work on a bike with derailleurs -- only single speeds or hub hear bikes. And I'm not sure how it adapts to changing chain lengths. (OK, looking at the picture, I see how it does -- there's just a small gap.)
    and now you've leaned me back to the odd thing.. still have plenty of time need to order a crankset first.
    "Seriously is what I want to be, so I put on spandex and show off my gear, my junk, my thing, yes my ding-a-ling."

  10. #10
    Senior Member
    Join Date
    Sep 2007
    Location
    Gaseous Cloud around Uranus
    Posts
    3,483
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    That's split wire loom on that bicycle chain,available at most auto parts stores....LOL! What an idea....

    You may have to make a guard if you have a chainring bigger than about 44 or so.
    Everything should be as simple as possible...But not more so.---Albert Einstein

  11. #11
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    3,416
    Mentioned
    50 Post(s)
    Tagged
    0 Thread(s)
    Guess you can make the shape you want out of wood, cut out a piece of sheetmetal
    an bang on it with a hammer over the wooden form, till its the shape you need.

  12. #12
    RIP Sonny RaleighSport's Avatar
    Join Date
    Jun 2011
    Location
    STS
    My Bikes
    Leader 725, Centurion Turbo, Scwhinn Tempo, Schwinn Premis, GT Tequesta, Bridgestone CB-2
    Posts
    6,224
    Mentioned
    33 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by fietsbob View Post
    Guess you can make the shape you want out of wood, cut out a piece of sheetmetal
    an bang on it with a hammer over the wooden form, till its the shape you need.
    Thanks but I think I'd rather cut it and bend it.. not too hard and my buddy has a light machine shop.. so I'll just have to trade some tech time for some shop time. But I'm still leaning towards the chain cover!
    "Seriously is what I want to be, so I put on spandex and show off my gear, my junk, my thing, yes my ding-a-ling."

  13. #13
    Constant tinkerer FastJake's Avatar
    Join Date
    May 2010
    Location
    Madison, Wisconsin
    Posts
    6,121
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by RaleighSport View Post
    ... I found this...ummmm http://www.amazon.com/BioLogic-Freed...5511402&sr=1-1 I'm not sure if I like it or it scares me.
    This thing doesn't look very useful to me. Only about 2/3 of the chain is actually covered, since it still has to engage the gears. I feel like water and debris would just collect in there and it would be worse than having nothing at all.

    I say, if you want a full chainguard go all the way. Maybe even seal it if you can and include an oil bath if you can. Then your chain will last forever!
    Why "derailer" is the correct way to spell the gear-change mechanism: sheldonbrown.com/derailer.html

  14. #14
    RIP Sonny RaleighSport's Avatar
    Join Date
    Jun 2011
    Location
    STS
    My Bikes
    Leader 725, Centurion Turbo, Scwhinn Tempo, Schwinn Premis, GT Tequesta, Bridgestone CB-2
    Posts
    6,224
    Mentioned
    33 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by FastJake View Post
    This thing doesn't look very useful to me. Only about 2/3 of the chain is actually covered, since it still has to engage the gears. I feel like water and debris would just collect in there and it would be worse than having nothing at all.

    I say, if you want a full chainguard go all the way. Maybe even seal it if you can and include an oil bath if you can. Then your chain will last forever!
    The only really exposed area seems to be where the teeth engage.. there is a small gap between the ends of the covering though and I'd assume any debris that fit in there would flush out with any water as well.. but we shall see.
    "Seriously is what I want to be, so I put on spandex and show off my gear, my junk, my thing, yes my ding-a-ling."

  15. #15
    Senior Member
    Join Date
    Feb 2001
    Location
    England
    Posts
    12,424
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Some of the Dutch and German 3x8 roadsters use a clear plastic chaincase. They use a big bulge/cutout over the mechs.
    If metal bashing over wood doesnt work for you, you could try laying fibreglass over a poloystyrene mould.

    I have looked high and low for aftermarket chaincases but apart from a few fancy metal hocky-stick style, there is nothing.

    The only bike to run a real oil bath chaincase was an old Sunbeam bike.
    Last edited by MichaelW; 09-09-11 at 04:12 AM.

  16. #16
    Senior Member ijsbrand's Avatar
    Join Date
    Aug 2011
    Location
    the Low countries
    Posts
    222
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Spare chain guards, either open or closed, can be bought at Dutch bike shops. A problem with the closed ones will be that most are made for the everyday Dutch bicycle, that have all more or less the same relaxed wheelbase.

  17. #17
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    3,416
    Mentioned
    50 Post(s)
    Tagged
    0 Thread(s)
    Thanks but I think I'd rather cut it and bend it..
    that's the process, cut it and bend it, that bending is where the hammer comes in.

    you hit the metal hanging over the edge and it bends a little with every stroke .

    If you use brass sheet, by repeatedly annealing it after a course of bending blows
    another course of blows can move the metal nicely and, you can form it smooth and even
    smooth surface, on the work is gained by having the hammer face polished.
    [almost plastic moving like pottery, but slower process]

    you cannot work steel the same way , cold, it has to be hot... blacksmithing.

    my buddy has a light machine shop..
    So didn't need the list peeps opinions anyhow..
    Last edited by fietsbob; 09-09-11 at 09:54 AM.

  18. #18
    Senior Member
    Join Date
    Sep 2007
    Location
    Gaseous Cloud around Uranus
    Posts
    3,483
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    You could make a wood form and buy your favorite color plexiglas and put it in the oven.
    Everything should be as simple as possible...But not more so.---Albert Einstein

  19. #19
    RIP Sonny RaleighSport's Avatar
    Join Date
    Jun 2011
    Location
    STS
    My Bikes
    Leader 725, Centurion Turbo, Scwhinn Tempo, Schwinn Premis, GT Tequesta, Bridgestone CB-2
    Posts
    6,224
    Mentioned
    33 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by fietsbob View Post
    that's the process, cut it and bend it, that bending is where the hammer comes in.

    you hit the metal hanging over the edge and it bends a little with every stroke .

    If you use brass sheet, by repeatedly annealing it after a course of bending blows
    another course of blows can move the metal nicely and, you can form it smooth and even
    smooth surface, on the work is gained by having the hammer face polished.
    [almost plastic moving like pottery, but slower process]

    you cannot work steel the same way , cold, it has to be hot... blacksmithing.


    So didn't need the list peeps opinions anyhow..
    I prefer your guys opinions to his... he'd probably just go, DO IT THIS WAY NOW! Whereas you guys are giving me real options and letting me think.
    Edit: Also I'm looking into fusing plastic bags to make a fender set as well.
    "Seriously is what I want to be, so I put on spandex and show off my gear, my junk, my thing, yes my ding-a-ling."

  20. #20
    It's got electrolytes! chucky's Avatar
    Join Date
    Aug 2009
    My Bikes
    Self-designed carbon fiber highracer, BikesDirect Kilo WT5, Pacific Cycles Carryme, Dahon Boardwalk with custom Sturmey Archer wheelset
    Posts
    1,394
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I've heard that full chain cases make it so difficult to remove the rear wheel that a dutch rider would never even consider changing a flat on the road, but rather always takes it to a nearby bike shop. Since bike shops aren't prevalent enough to do this in America, if I were looking to protect the chain then I'd try the split cable tube (ie chainrunner), possibly filled with very thick grease to try to keep too much debris from getting through the crack.

    However, if you're just looking to protect your clothing/skin from dirty chain then I've found that the best way is to cook a new chain in a bath of melted wax before you ride it; To ensure that plenty of wax gets stuck in the interstices of the chain (to provide a lifetime supply of ground wax powder lubricant) try to wait until the wax cools enough to begin coagulating before you remove the chain from the bath. In my experience, for a SS/IGH bike, you only need to do this once for the entire life of the chain (which should be way longer than even a well oiled derailleur chain). Much better than a noisy heavy guard and it still works if the chain isn't new/unridden when you give it the bath (the result just isn't quite as clean).
    Last edited by chucky; 09-09-11 at 01:45 PM.
    A sure sign of a successful experiment is when failure is prolonged until the experimenter forgets that he's even conducting an experiment.

  21. #21
    afraid of whales Mr IGH's Avatar
    Join Date
    Apr 2009
    Location
    Front Range, CO
    Posts
    2,695
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)

  22. #22
    aka Tom Reingold noglider's Avatar
    Join Date
    Jan 2009
    Location
    West Village, New York City
    My Bikes
    too many
    Posts
    20,821
    Mentioned
    115 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by Mr IGH View Post
    Hey, that's nice.

    For a few months recently, I was riding an old English 3-speed as a daily commuting and errand bike. In the winter, of course, I'd wear long trousers. I noticed I could just jump on the bike without tying up my trousers. Hey, wow, I get it! Eureka!
    You don't read my signature anyway, do you?

    Tom Reingold, noglider@pobox.com
    Residences: West Village, New York City and High Falls, NY
    Blogs: The Experienced Cyclist; noglider's ride blog

Posting Permissions

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