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#1
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axle cone compatibility 9.5 mm 26 tpi vs 3/8 standard?
Bought some nice new cones to fit my 3/8 solid axle hub bike.
The bag said these were threaded for 9.5 mm 26 tpi. I tried threading them onto three different sets of 3/8 standard solid axles but the cones screw on about three revolutions and come up tight? I thought 3/8 and 9.5 mm 26 TPI cones and axles were interchangeable? |
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#2
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axle cone compatibility 9.5 mm 26 tpi vs 3/8 standard?
anonymous wrote:
Bought some nice new cones to fit my 3/8 solid axle hub bike. The bag said these were threaded for 9.5 mm 26 tpi. I tried threading them onto three different sets of 3/8 standard "Standard?" don't use adjectives where numbers are called for. solid axles but the cones screw on about three revolutions and come up tight? I thought 3/8 and 9.5 mm 26 TPI cones and axles were interchangeable? They are, but maybe your axles are 24 tpi, this is also a "standard." It's also not impossible that the nuts don't match the label on the bag, almost everybody makes mistakes. Shelden "Nevre Mackes Misteaks" Browne +------------------------------------+ | Love truth, but pardon error. | | --Voltaire | +------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 http://harriscyclery.com Hard-to-find parts shipped Worldwide http://captainbike.com http://sheldonbrown.com |
#3
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axle cone compatibility 9.5 mm 26 tpi vs 3/8 standard?
On Wed, 01 Feb 2006 12:16:19 -0500, Sheldon Brown
wrote: anonymous wrote: Bought some nice new cones to fit my 3/8 solid axle hub bike. The bag said these were threaded for 9.5 mm 26 tpi. I tried threading them onto three different sets of 3/8 standard "Standard?" don't use adjectives where numbers are called for. solid axles but the cones screw on about three revolutions and come up tight? I thought 3/8 and 9.5 mm 26 TPI cones and axles were interchangeable? They are, but maybe your axles are 24 tpi, this is also a "standard." I took these cones to a couple different bike shops and they would not fit any of the cheapy 3/8 axle sets. It's also not impossible that the nuts don't match the label on the bag, almost everybody makes mistakes. That is a scary thought, I could spend all kinds of money special ordering 9.5 mm 26 TPI axles, lock nuts and track nuts only to find out I had 24 TPI cones! Do you know of any any Cinderella hubs out there that use 24 TPI threaded 3/8 axles to test this theory out on? Shelden "Nevre Mackes Misteaks" Browne +------------------------------------+ | Love truth, but pardon error. | | --Voltaire | +------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 http://harriscyclery.com Hard-to-find parts shipped Worldwide http://captainbike.com http://sheldonbrown.com |
#4
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axle cone compatibility 9.5 mm 26 tpi vs 3/8 standard?
On 01 Feb 2006 10:16:56 EST, anonymous wrote:
Bought some nice new cones to fit my 3/8 solid axle hub bike. The bag said these were threaded for 9.5 mm 26 tpi. I tried threading them onto three different sets of 3/8 standard solid axles but the cones screw on about three revolutions and come up tight? I thought 3/8 and 9.5 mm 26 TPI cones and axles were interchangeable? If the 3/8 axles are really 3/8-24, which is a "standard" thread used on common fine-thread nuts and bolts, then the complete axle assemblies with cones, locknuts and axle nuts are interchangeable with 9.5mm. The components individually are not. There's also a 3/8-26 axle, which is dimensionally equivalent to 9.525-26; that's close enough to allow the individual bits to be swapped as well as the complete assemblies. From the sound of it, your old unit is 3/8-24. -- Typoes are a feature, not a bug. Some gardening required to reply via email. Words processed in a facility that contains nuts. |
#5
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axle cone compatibility 9.5 mm 26 tpi vs 3/8 standard?
anonymous wrote: On Wed, 01 Feb 2006 12:16:19 -0500, Sheldon Brown wrote: anonymous wrote: Bought some nice new cones to fit my 3/8 solid axle hub bike. The bag said these were threaded for 9.5 mm 26 tpi. I tried threading them onto three different sets of 3/8 standard "Standard?" don't use adjectives where numbers are called for. solid axles but the cones screw on about three revolutions and come up tight? I thought 3/8 and 9.5 mm 26 TPI cones and axles were interchangeable? They are, but maybe your axles are 24 tpi, this is also a "standard." I took these cones to a couple different bike shops and they would not fit any of the cheapy 3/8 axle sets. It's also not impossible that the nuts don't match the label on the bag, almost everybody makes mistakes. That is a scary thought, I could spend all kinds of money special ordering 9.5 mm 26 TPI axles, lock nuts and track nuts only to find out I had 24 TPI cones! Do you know of any any Cinderella hubs out there that use 24 TPI threaded 3/8 axles to test this theory out on? Shelden "Nevre Mackes Misteaks" Browne +------------------------------------+ | Love truth, but pardon error. | | --Voltaire | +------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 http://harriscyclery.com Hard-to-find parts shipped Worldwide http://captainbike.com http://sheldonbrown.com Here's a novel thought ... Why don't you use a thread pitch gauge and see what your axle is? Or, you could take a more brute force approach - measure 1" and count the threads. That's plenty accurate enough to distinguish between 24 and 26tpi. Or, you can go to this page: http://www.boltdepot.com/fastener-in...IandPitch.aspx and print out a layover thread pitch gauge, or, use the link there to purchase one of their ultra cheap thread pitch gauges ($1.50 !). Getting real thread pitch gauges, which would cost less than $10, is well worth the money. You say you are worried about spending "lots of money". It's all relative ;-) Here's a nice blurb on bikes and thread pitches: http://www.parktool.com/repair/readhowto.asp?id=89 If you want to get the real thing, you will need two thread pitch gauges - one English and one Metric. Here's an English set from Snap-On (for less than $10 !!! - nothing costs less than $10 from them): http://buy1.snapon.com/catalog/tools...e=snapon-store and, here is decent metric measuring set ($7.95) which measures diameters as well: http://www.biketoolsetc.com/index.cg...&item_id=IR-MM Please measure safely!!! |
#6
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axle cone compatibility 9.5 mm 26 tpi vs 3/8 standard?
no guages here. we have a box of used axle parts:this is called the axle parts box when necessary, i spend an hour fitting parts to an axle for one stupid reason or ... yeah. i find a 9mm axle(or parts?) takes a 3/8ths part but convieniently forget which does what. enter thread percentage-the amount the male thread fills the female thread gap. seems that looser tolerances (lower %) such as those available from Ford would not fit on tiwainese made parts ordered and designed by germans anyway-if it wobbles it's no good ummmless you gotta and then use red loctite keeping an eye on it as a temporary fixture. seems that well made hi percentage parts are not inertchangable |
#7
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axle cone compatibility 9.5 mm 26 tpi vs 3/8 standard?
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#8
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axle cone compatibility 9.5 mm 26 tpi vs 3/8 standard?
loose-wobble-pull back and forth along axle- the pyramid-wald group in the right place does not loosewobbleorpull shim/campy/'80 ti and japanese hi enders are really tight-like a 544/122 volvo try 'wheels mfg.' website for a cones-axle chart |
#9
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axle cone compatibility 9.5 mm 26 tpi vs 3/8 standard?
anonymous wrote: Bought some nice new cones to fit my 3/8 solid axle hub bike. The bag said these were threaded for 9.5 mm 26 tpi. I tried threading them onto three different sets of 3/8 standard solid axles but the cones screw on about three revolutions and come up tight? I thought 3/8 and 9.5 mm 26 TPI cones and axles were interchangeable? They are. I'm guessing that the axle 'may' be 10by26...Some 'offshore' solid axles are indeed this size. Try a 10by26 or 10by1 cone...at yer LBS. |
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