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#1
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holders of bearing holders?
From where can a home builder buy machined bearing holders? -- goldenchicken II - There is more to cycling Olaf Johansson ------------------------------------------------------------------------ goldenchicken II's Profile: http://www.unicyclist.com/profile/10248 View this thread: http://www.unicyclist.com/thread/42420 |
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#2
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holders of bearing holders?
Good question. Twice I've sawed them off a damaged frame to use in my new ones. But I'd like to get some as well. -- unisk8r - One Wheel Wander ------------------------------------------------------------------------ unisk8r's Profile: http://www.unicyclist.com/profile/4660 View this thread: http://www.unicyclist.com/thread/42420 |
#3
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holders of bearing holders?
Here perhaps? http://www.staffordmfg.com/ -- goldenchicken II - There is more to cycling Olaf Johansson ------------------------------------------------------------------------ goldenchicken II's Profile: http://www.unicyclist.com/profile/10248 View this thread: http://www.unicyclist.com/thread/42420 |
#4
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holders of bearing holders?
goldenchicken II wrote: *Here perhaps? http://www.staffordmfg.com/ * Or 'McMaster-Carr' (http://www.mcmaster.com/) The shaft collar is the more common option for a DIY machined bearing holder. George Barnes uses a machined shaft collar for his frames. DM used a shaft collar for the Vortex frame. They're not ideal cause they're a little heavy for what you need and some can be a bit thin where the bolt head is countersunk meaning that there can be very little metal supporting the area under the bolt head. Depends on the make of the shaft collar. Here's a thread that talks about 'bearing holders' (http://tinyurl.com/3w6n3). Steve Howard has also used shaft collars for his steel unicycles. Here's one thread where he talks about his 'stainless steel muni project' (http://tinyurl.com/d2paw). Steve's gallery has pictures of the shaft collar being machined but the gallery is down right now so I can't link you there. Steve's main gallery page is at http://www.unicyclist.com/gallery/showard -- john_childs - Guinness Mojo john_childs (att) hotmail (dott) com Gallery: '' (http://gallery.unicyclist.com/john_childs) ' Unicycling Bookmark List' (http://backcountry.unicyclist.com/) :: 'World Clock' (http://tinyurl.com/a99y3) 'Click Me' (http://tinyurl.com/7lvbu) ------------------------------------------------------------------------ john_childs's Profile: http://www.unicyclist.com/profile/449 View this thread: http://www.unicyclist.com/thread/42420 |
#5
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holders of bearing holders?
In the UK I use Farnell for some personal orders. As I can't read Swedish I don't know if this option is available to you but here is a link to a 40mm 2pc collar: http://tinyurl.com/bkhcm It seems very easy to buy shaft collars over the web in the US, and other metal items, but very difficult in the UK. Regards Keith -- keg - Getting fitter ------------------------------------------------------------------------ keg's Profile: http://www.unicyclist.com/profile/212 View this thread: http://www.unicyclist.com/thread/42420 |
#6
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holders of bearing holders?
Thanks for all the good links. Through them I managed to find a dealer even in my home town! I wonder why people have found it necessary to bore out a lip preventing the frame to slip radially on the bearing surface. These collars seem to be made for industrial use - won't they clamp tight enough not to slip without a lip? -- goldenchicken II - There is more to cycling Olaf Johansson ------------------------------------------------------------------------ goldenchicken II's Profile: http://www.unicyclist.com/profile/10248 View this thread: http://www.unicyclist.com/thread/42420 |
#7
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holders of bearing holders?
goldenchicken II wrote: *I wonder why people have found it necessary to bore out a lip preventing the frame to slip radially on the bearing surface. These collars seem to be made for industrial use - won't they clamp tight enough not to slip without a lip? * You don't want to clamp it down too tight as that will make the bearings move less freely and will also wear out the bearings quicker. -- Gilby - Unicyclist.com Webmaster ------------------------------------------------------------------------ Gilby's Profile: http://www.unicyclist.com/profile/1 View this thread: http://www.unicyclist.com/thread/42420 |
#8
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holders of bearing holders?
I haven't measured the torque used however I tighten them with a ball ended allen key (screwdriver style handle) and I doubt it is any higher than with the standard pressed bearing holders. Saying that I generally braze a small lip of steel on the outside of the shaft collars, this is easier for me than getting undersized collars and boaring out to leave a lip. Keith -- keg - Getting fitter ------------------------------------------------------------------------ keg's Profile: http://www.unicyclist.com/profile/212 View this thread: http://www.unicyclist.com/thread/42420 |
#9
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holders of bearing holders?
Gilby wrote: *You don't want to clamp it down too tight as that will make the bearings move less freely and will also wear out the bearings quicker. Though that's probably less of an issue with good machined bearing holders. * With an ID of 40 mm (equal as the bearing's OD) I believed the shaft collars couldn't be tightened so much that they prevent the axle from rotating freely ... -- goldenchicken II - There is more to cycling Olaf Johansson ------------------------------------------------------------------------ goldenchicken II's Profile: http://www.unicyclist.com/profile/10248 View this thread: http://www.unicyclist.com/thread/42420 |
#10
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holders of bearing holders?
keg wrote: *I haven't measured the torque used however I tighten them with a ball ended allen key (screwdriver style handle) and I doubt it is any higher than with the standard pressed bearing holders. Saying that I generally braze a small lip of steel on the outside of the shaft collars, this is easier for me than getting undersized collars and boaring out to leave a lip. Keith * The brazing solution did cross my mind but then I suppose you've got to find a collar that is not too wide, just a fraction wider than the bearings. So you think it is enough having a lip only on one side (the outside)? I saw that some collars have grooves on the inside. Find a ball bearing with similar grooves on the outside and we could pip the lips ... -- goldenchicken II - There is more to cycling Olaf Johansson ------------------------------------------------------------------------ goldenchicken II's Profile: http://www.unicyclist.com/profile/10248 View this thread: http://www.unicyclist.com/thread/42420 |
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