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moezombie
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 Posted: Wed May 16, 2012 4:33 pm |
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| Believed Landis the first two timesJoined: Wed Sep 23, 2009 12:26 pmPosts: 294
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I'm trying to fix up an old kids bike and there is no real reaction pedaling forward or backward, at least not enough to pedal it or brake it. When I opened it up I see a metal donut on each end with a slight wedge cut in each where the 3rd piece drops in which is ribbed on the outer side. The inner wall of the hub seems fairly smooth. Is it the case that years of use has worn down the surface it needs to contact, or is there something missing from the unit itself? All diagrams I look up show a completely different style, with 2 brake sides and the local shop has nothing like it in it's parts bins. Is it repairable?
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gna
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| Posted: Wed May 16, 2012 4:47 pm |
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 Secret: wants a tall bikeJoined: Mon Jun 29, 2009 5:43 pmPosts: 415Location: Capital City
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moezombie wrote: I'm trying to fix up an old kids bike and there is no real reaction pedaling forward or backward, at least not enough to pedal it or brake it. When I opened it up I see a metal donut on each end with a slight wedge cut in each where the 3rd piece drops in which is ribbed on the outer side. The inner wall of the hub seems fairly smooth. Is it the case that years of use has worn down the surface it needs to contact, or is there something missing from the unit itself? All diagrams I look up show a completely different style, with 2 brake sides and the local shop has nothing like it in it's parts bins. Is it repairable? I assume it's a coaster brake hub? I have an old copy of Glenn's at home; I'll look at the Bendix hubs. Do you have a model number? In my experience, most coasters have a a clutch with serrated teeth and two ribbed pieces that are the brake shoes. See http://www.parktool.com/blog/repair-help/coaster-hub-overhaul-pedal-brake-hubThe clutch teetch can get worn, as can the brake shoes. If it's a two speed kick-back hub, though, then we'll need to study.
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moezombie
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| Posted: Wed May 16, 2012 5:40 pm |
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| Believed Landis the first two timesJoined: Wed Sep 23, 2009 12:26 pmPosts: 294
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The arm reads Bendix 70- J. Cleaning up the outer hub more to see if it has any numbers. Prior to opening it, I looked at park tool to see what I might expect, and it didn't match up with mine. Here's a couple of pics i just took. http://photobucket.com/bendixhub
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moezombie
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| Posted: Wed May 16, 2012 6:10 pm |
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| Believed Landis the first two timesJoined: Wed Sep 23, 2009 12:26 pmPosts: 294
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moezombie wrote: The arm reads Bendix 70- J. Cleaning up the outer hub more to see if it has any numbers. Prior to opening it, I looked at park tool to see what I might expect, and it didn't match up with mine. Here's a couple of pics i just took. http://photobucket.com/bendixhubOk, just pulled the sprocket side and if this is the clutch, it's all gummy and tar-like which may be the problem if it's supposed to move freely back and forth on the screw section.
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gna
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| Posted: Thu May 17, 2012 4:27 pm |
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| Secret: wants a tall bikeJoined: Mon Jun 29, 2009 5:43 pmPosts: 415Location: Capital City
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moezombie wrote: moezombie wrote: The arm reads Bendix 70- J. Cleaning up the outer hub more to see if it has any numbers. Prior to opening it, I looked at park tool to see what I might expect, and it didn't match up with mine. Here's a couple of pics i just took. http://photobucket.com/bendixhubOk, just pulled the sprocket side and if this is the clutch, it's all gummy and tar-like which may be the problem if it's supposed to move freely back and forth on the screw section. Yeah, clean it up and pack with fresh grease. It doesn't look too worn in your pictures. It looks like the Bendix Junior. I'll check it again when I get home from work. I think the 70-J may be a date code or a tooling date.
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moezombie
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| Posted: Thu May 17, 2012 7:36 pm |
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| Believed Landis the first two timesJoined: Wed Sep 23, 2009 12:26 pmPosts: 294
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Yeah, a good spray down and grease got it back to working order. Far simpler than I had imagined.
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gna
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| Posted: Mon May 28, 2012 8:59 pm |
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| Secret: wants a tall bikeJoined: Mon Jun 29, 2009 5:43 pmPosts: 415Location: Capital City
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moezombie wrote: Yeah, a good spray down and grease got it back to working order. Far simpler than I had imagined. Sounds like you're good to go. Do you want me to scan the pages on the Bendix hub?
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moezombie
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| Posted: Sun Jun 03, 2012 6:25 pm |
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| Believed Landis the first two timesJoined: Wed Sep 23, 2009 12:26 pmPosts: 294
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gna wrote: moezombie wrote: Yeah, a good spray down and grease got it back to working order. Far simpler than I had imagined. Sounds like you're good to go. Do you want me to scan the pages on the Bendix hub? Sorry, I missed this post. Thanks for your help, but no I don't think I'll need the pages. Once I truly got in there, the works were so basic that it didn't require much explanation. It's a shame most other things aren't designed as simply. Again, I appreciate you looking that stuff up for me, it once again rides like the 45 yr old bike it is...as long as you are about 3 feet high.
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