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65mm wide bottom bracket???
Anybody know where I can find a 65mm wide BB? I know they're made
'cause I saw one on eBay in the UK. I just emailed the Yellow Jersey, so you don't need to suggest that. I wonder if their computer is above water? Jones |
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#2
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65mm wide bottom bracket???
It is a bit of work, but you can face down any 68 to 65. A breeze if you do it on the lathe prior to building. |
#3
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65mm wide bottom bracket???
On Aug 23, 8:59 pm, !Jones wrote:
Anybody know where I can find a 65mm wide BB? I know they're made 'cause I saw one on eBay in the UK. I just emailed the Yellow Jersey, so you don't need to suggest that. I wonder if their computer is above water? Jones If the shell is 65mm..adding a few spacers to the BB when installing and a 68mm BB can be installed onto this frame. Like most shimano MTB BBs, that have spacers for 73mm or 68mm shells. |
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65mm wide bottom bracket???
On Thu, 23 Aug 2007 20:58:54 -0700, in rec.bicycles.tech velodancer
wrote: It is a bit of work, but you can face down any 68 to 65. A breeze if you do it on the lathe prior to building. Damn! The things we learn on Usenet!!! To be honest, I've never been into one. I thought that there was some dark force holding them together... you know, like "The Mummy" or something. So... help me out just a little more, here... I'd figure my spindle length, buy the parts, and cut the case down by 3mm? I've heard of people taking them apart and messing with the alignment... but I have a lathe and all of the tooling. Then what? Press it together with locktight? (Good stuff! I use it on my sandwiches!) Maybe I need to search for a drawing. Sheldon got one? Heck, one way to find out. But, thanks for the tip! That'll start me looking. Jones |
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65mm wide bottom bracket???
On Fri, 24 Aug 2007 15:17:01 -0500, in rec.bicycles.tech !Jones
wrote: Maybe I need to search for a drawing. Sheldon got one? Heck, one way to find out. Well, he has *lots* of good stuff... he usually does; however, all I found starts with an existing BB assembly. Frankly, I'd not thought that you could go in with a piece of tool steel and cut one down... but it makes sense that you could. I have an old Phil BB in my hand right now. I think I'll take it apart... It came off an old child stoker kit and is way too long in the spindle. Check my tools... hack saw, BFH, cutting torch, dynamite... now what??? Jones |
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65mm wide bottom bracket???
On Fri, 24 Aug 2007 15:45:06 -0500, in rec.bicycles.tech !Jones
wrote: Check my tools... hack saw, BFH, cutting torch, dynamite... now what??? Pull on it! That was easy! The shell has a little counterbore... piece of cake. What bothers me is that I see two steel lock rings that fix the location of the bearings. I can cut the case down and counterbore it, but I can't do anything about the position of those lock rings. Far be it from me to disparage anyone's ideas, but I don't think that you can face a 68mm BB down to 65mm because the bearing locations are fixed. I'm looking at a Phil from the early '70s that I just took apart... .... and I got grease all over the keyboard of my wife's computer! Anybody need a house mate? Jones |
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65mm wide bottom bracket???
On Aug 24, 1:17 pm, !Jones wrote:
On Thu, 23 Aug 2007 20:58:54 -0700, in rec.bicycles.tech velodancer wrote: It is a bit of work, but you can face down any 68 to 65. A breeze if you do it on the lathe prior to building. Damn! The things we learn on Usenet!!! To be honest, I've never been into one. I thought that there was some dark force holding them together... you know, like "The Mummy" or something. So... help me out just a little more, here... I'd figure my spindle length, buy the parts, and cut the case down by 3mm? I've heard of people taking them apart and messing with the alignment... but I have a lathe and all of the tooling. Then what? Press it together with locktight? I think I misunderstood your question. 68mm usually refers to the bottom bracket shell width. Are you actually asking about bottom bracket spindle length? And what is your thought for doing this? Lower Q factor I suppose? I've never heard of a 68mm long spindle before. But you can almost certainly fit a much shorter spindle on your existing bike than you have now (which may be the point)? |
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65mm wide bottom bracket???
On Fri, 24 Aug 2007 14:21:22 -0700, in rec.bicycles.tech velodancer
wrote: I think I misunderstood your question. 68mm usually refers to the bottom bracket shell width. Yes... and I have an old frame on which I'm trying to use a few modern parts. (It's an old Littlejohn tandem, FYI) The shell is 2" ID X 65mm wide and there is no timing chain tensioning at all. So... praise Nova! I have an eliptical; its OD was 2.126", but this is why we have lathes! I knocked it down to 1.995" and it slips into the 2" bore slicker 'n boogers on a brass doorknob. Now, it is 68mm wide. This means that it hangs out by 1.5mm on both sides of the shell and looks like s**t. I want to face that off and make it flush with the shell... which I can do in 30 seconds. The question is: can I get what *I* am calling a BB (axle, 2 bearings, case) that'll fit the now 65mm width? So, when I call Phil Wood and tell 'em I want an R=+5 or whatever, how do they move the bearings back and forth on the axle (or spindle, as I call it; I suppose either would be correct)? If they can move 'em 5mm, I ought to be able to squeeze 'em both 1.5mm towards center, right? Are you actually asking about bottom bracket spindle length? And what is your thought for doing this? Lower Q factor I suppose? Uhhh... I didn't know I needed one of those! Isn't that the same thing as a "reason"? Because it's there!!! Jones... who might just have to get over the fact that the assembly protrudes! |
#9
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65mm wide bottom bracket???
On Aug 24, 1:21 pm, velodancer wrote:
I think I misunderstood your question. 68mm usually refers to the bottom bracket shell width. Are you actually asking about bottom bracket spindle length? And what is your thought for doing this? Lower Q factor I suppose? I've never heard of a 68mm long spindle before. News of the weird: a couple of the streamlined recumbent folks use 61mm length spindles. This is to create an ultra-low "Q" factor and smaller footboxes. See http://www.recumbents.com/wisil/qfactor/qfactor.htm .. Jeff |
#10
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65mm wide bottom bracket???
!Jones wrote:
Anybody know where I can find a 65mm wide BB? I know they're made 'cause I saw one on eBay in the UK. For a price, Phil Wood will do (or at least used to) do custom work. (I have a OEM custom Phil hub of which less than a dozen were made.) I just emailed the Yellow Jersey, so you don't need to suggest that. I wonder if their computer is above water? Well, the shop is not that far above Lake Mendota, and it has been raining like crazy the last couple of weeks here in Cheeseland. -- Tom Sherman - Holstein-Friesland Bovinia A Real Cyclist [TM] keeps at least one bicycle in the bedroom. -- Posted via a free Usenet account from http://www.teranews.com |
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