Bicycle TutorBicycle Tutor

Show off your bike!

Related video tutorials:
Where to buy bearing race (cone part)?
#1
Found cheap axle assemblies. Who knows about numbers like 3/8x26x126x155? What do they mean?
http://www.bikepartsusa.com/bikeparts/item/01-114588/

[attachment=2116]
Reply
#2
3/8 is the thickness of the axle, 26 is threads per inch, 126 (mm) is the dropout to dropout measurement on the bike that the axle is intended to be used on, 155 (mm) is the overall length.

I think!

If I'm right, this would make it a rear axle for a 6/7 speed road bike. Mountain bikes usually have 130-135 rear spacing.
Reply
#3
(04-11-2011, 04:54 AM)DaveM Wrote:  3/8 is the thickness of the axle, 26 is threads per inch, 126 (mm) is the dropout to dropout measurement on the bike that the axle is intended to be used on, 155 (mm) is the overall length.

I think!

If I'm right, this would make it a rear axle for a 6/7 speed road bike. Mountain bikes usually have 130-135 rear spacing.

Thanks, what is drop out? I believe 126 is a length of unthreaded part in the middle.
I think 5/16x26 thread is really 8x1mm, I ordered axle, we'll see.
I talked to a bike mechanic, he said races are possibly OK(???), he offered to install bearings to check for $25. He also looked drugged, it was Sunday around 6 PM, I had to explain him 3 times that I lost balls from freewheel. Instead of selling me 1/8 balls he offered to sell me freewheel for $25.
Reply
#4
Drop outs are the part the wheel axles fit into.
So if you undo the axle the wheel "drops out". Smile

Axle spacing:-
http://www.sheldonbrown.com/gloss_sp-ss.html#spacing
[font=Trebuchet MS]Ride hard or ride home alone![/font]
Reply
#5
both these cones need replacing.
If its a rear wheel, the bearing size is almost certainly 1/4" dia. if you use caged bearings, there will be 7 balls, if loose then 8 or 9.
The thread dia.may be 3/8" or 10mm, doesn't matter which if you are replacing with all new and new track nuts, but do not mix parts from one to another.
You should also check the condition of the inner race in the hub, if this is also badly worn, they cannot be replaced and you need a new wheel.
Reply
#6
Thanks.
Rear Axle is 8mm x 1mm x 135 x 180mm
I found replacement for front axle assembly on internet, but nothing for rear. Today some mechanic gave me one cone like new, so I'll probably install it and better old one, I just don't know where else to look for it.
Reply
#7
don't think I have ever seen an 8mm. rear axle.
The common sizes are front only 5/16" and 9mm. f/r 3/8". 10mm. and now 14mm. on bmx.
Reply
#8
(04-12-2011, 08:29 AM)trevgbb Wrote:  don't think I have ever seen an 8mm. rear axle.
The common sizes are front only 5/16" and 9mm. f/r 3/8". 10mm. and now 14mm. on bmx.
8mm=5/16"
metric 1mm thread= 25.4 TPI, which is very close to 26 TPI
It is hard to expect chinese bike to have standard (non-metric) thread.
Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  Strange metal part on real axle '86 schwinn SkyFlake 1 3,077 04-27-2017, 04:09 PM
Last Post: SkyFlake
  Hub race spinning? !TREK4ME! 3 2,996 06-09-2014, 06:23 PM
Last Post: !TREK4ME!
  Looking for a better bearing bikerider 4 4,335 03-06-2014, 03:35 AM
Last Post: BradleyF5
  Cone wrenches for overhauling hubs larsonian 7 7,209 08-20-2012, 03:12 AM
Last Post: Bill
  Sturmey S2C cone adjustment hatrabbit 2 5,190 03-23-2012, 08:51 PM
Last Post: trevgbb
  Sturmey Archer AW bearing cone spacing aljac 3 8,422 12-03-2011, 12:31 AM
Last Post: AW_hub
  Bearing\hub inspection moosemouse 2 5,315 10-20-2011, 06:33 PM
Last Post: moosemouse
  Next cone tightening nextmatt 2 4,451 07-31-2011, 03:04 AM
Last Post: nextmatt
  Dust cap loose after cone & bearing replacement abrookewood 5 10,586 07-01-2011, 08:37 AM
Last Post: abrookewood
  Bent Axle + Worn Cone Weaver 3 9,531 06-15-2011, 07:56 PM
Last Post: Weaver

Forum Jump:



ISSN 1918-3445 © Copyright 2007-2010 Bicycle Tutor / Privacy Policy / Created by Alex Ramon

feed