Help again regarding VINTAGE BOTTOM BRACKET - AXEL - WHICH ONE?
#1
Senior Member
Thread Starter
Join Date: Sep 2009
Posts: 174
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Help again regarding VINTAGE BOTTOM BRACKET - AXEL - WHICH ONE?
https://www.bikeforums.net/attachment...2&d=1295195658
This is my 70s Falcon Earnie Clements I'm restoring.
Finally bought some new ali cranks and now problem with axel.
It appears that one one side there is not enough sticking out, cause when I tighten whichever side is shortest, it presses to tight on the BB bearing cup and does not turn as it's metal on metal on the outside.
But one side seems ok....
I need this amount of room on each side.... There's a weird plastic tube inside which seems to be for the bearings to roll on (by sugino) but I do not have a pin tool for the other cup (the pin hole cup is on the drive side)..
Is this the one I need??
https://cgi.ebay.co.uk/3P-CYCLE-BIKE-...item33634e4db7
Please let me know your thoughts.
This is my 70s Falcon Earnie Clements I'm restoring.
Finally bought some new ali cranks and now problem with axel.
It appears that one one side there is not enough sticking out, cause when I tighten whichever side is shortest, it presses to tight on the BB bearing cup and does not turn as it's metal on metal on the outside.
But one side seems ok....
I need this amount of room on each side.... There's a weird plastic tube inside which seems to be for the bearings to roll on (by sugino) but I do not have a pin tool for the other cup (the pin hole cup is on the drive side)..
Is this the one I need??
https://cgi.ebay.co.uk/3P-CYCLE-BIKE-...item33634e4db7
Please let me know your thoughts.
#2
Banned
I need this amount of room on each side...
Back away from the keyboard, and take your project to a proper bike shop.
they will be able to see 1st hand what you have, and measure the parts involved, and suggest
an appropriate length BB assembly .
Last edited by fietsbob; 03-30-11 at 11:45 AM.
#3
Senior Member
Thread Starter
Join Date: Sep 2009
Posts: 174
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The problem is most bike shops don't deal in these parts, it's why I am buying from ebay/china.
I know it's a pretty easy thing so don't need to take it to a bike shop....
All's I need to know is if anyone who has dealt with this sort of thing before, would the suggested crank (2nd link) be OK for this??? Or do I need to try and squeeze that BB CUP (one with two pin holes) in a little bit????
I know it's a pretty easy thing so don't need to take it to a bike shop....
All's I need to know is if anyone who has dealt with this sort of thing before, would the suggested crank (2nd link) be OK for this??? Or do I need to try and squeeze that BB CUP (one with two pin holes) in a little bit????
#4
Collector of Useless Info
Join Date: Aug 2009
Posts: 1,404
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
There could be a few things wrong, but I suspect that your new crank is ISO taper and your old spindle is JIS taper (or vice versa). Basically, the spindle shoves too far into the crank's square hole. So, getting yourself the right spindle will fix it. Make sure to get the same length with the correct taper- there are a bunch of different lengths and offset of spindles available.
No need to remove the fixed cup- just install the bearings from the other side using grease to hold them in place, then insert the spindle, then put the plastic accordian thing in (protects the bearings from crud and water coming down the seat tube), then put back the adjustable cup.
No need to remove the fixed cup- just install the bearings from the other side using grease to hold them in place, then insert the spindle, then put the plastic accordian thing in (protects the bearings from crud and water coming down the seat tube), then put back the adjustable cup.
#5
Collector of Useless Info
Join Date: Aug 2009
Posts: 1,404
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
On second thought, you need to measure the BB width- it looks like the spindle is way too short for that BB shell. Probably the best option is to just buy the right sized cartridge BB. The pin tool won't work for the fixed cup- the pins would shear off before it would turn. Sheldon Brown has a good method for removing fixed cups using a large bolt and a two-foot cheater bar... https://www.sheldonbrown.com/tooltips/bbcups.html
#6
Old fart
Join Date: Nov 2004
Location: Appleton WI
Posts: 24,786
Bikes: Several, mostly not name brands.
Mentioned: 153 Post(s)
Tagged: 0 Thread(s)
Quoted: 3588 Post(s)
Liked 3,400 Times
in
1,934 Posts
Are you using the original BB cups and spindle with a new crank? If so, you may be encountering JIS/ISO incompatibility: https://www.sheldonbrown.com/bbtaper.html
If this is the case, you can replace the spindle with a new JIS spindle, but it may take some experimenting to find one that works. Another option would be to replace the BB parts with a new cartridge unit known to work with your selected cranks.
And BTW, the plastic sleeve you found is to keep contamination out of the bearings.
If this is the case, you can replace the spindle with a new JIS spindle, but it may take some experimenting to find one that works. Another option would be to replace the BB parts with a new cartridge unit known to work with your selected cranks.
And BTW, the plastic sleeve you found is to keep contamination out of the bearings.
#7
SE Wis
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 10,515
Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970
Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2747 Post(s)
Liked 3,395 Times
in
2,056 Posts
Those axles are often not symetrical - is it in backwards?
#8
Banned
Many cranks require a longer right side than a left side,
More so if the cranks have straight arms .
need to measure the parts involved .. different subtile variations in parts .
real Data missing on many of these queries .
More so if the cranks have straight arms .
need to measure the parts involved .. different subtile variations in parts .
real Data missing on many of these queries .
Last edited by fietsbob; 03-29-11 at 06:47 PM.
#9
Thrifty Bill
Join Date: Jan 2008
Location: Mountains of Western NC
Posts: 23,525
Bikes: 86 Katakura Silk, 87 Prologue X2, 88 Cimarron LE, 1975 Sekai 4000 Professional, 73 Paramount, plus more
Mentioned: 96 Post(s)
Tagged: 0 Thread(s)
Quoted: 1236 Post(s)
Liked 964 Times
in
628 Posts
Its a spindle, not an axle. New crankset? Need to get the matching bottom bracket to go with it. Bottom brackets are matched to the crankset, rather than the bike (of course, the threading has to be right). You should be able to do a search and find out what size bb you need for that new crank.
Bottom brackets can be pretty cheap. +1 Go with a properly sized cartridge bb.
Bottom brackets can be pretty cheap. +1 Go with a properly sized cartridge bb.
#10
Senior Member
Thread Starter
Join Date: Sep 2009
Posts: 174
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Yeah guys I think it is the whole ISO and JIS thing.
I have switched the spindle around, and as guessed it just becomes too short on one side. So I think I need a larger spindle ( equal on both sides )
I found this, will it work???
https://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWNX:IT
I have switched the spindle around, and as guessed it just becomes too short on one side. So I think I need a larger spindle ( equal on both sides )
I found this, will it work???
https://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWNX:IT
#12
Banned
Crank particulars, and BB spindle length are the match challenge ,
the JIS/ ISO taper is part of it.
the JIS/ ISO taper is part of it.
#13
Senior Member
Yeah guys I think it is the whole ISO and JIS thing.
I have switched the spindle around, and as guessed it just becomes too short on one side. So I think I need a larger spindle ( equal on both sides )
I found this, will it work???
https://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWNX:IT
I have switched the spindle around, and as guessed it just becomes too short on one side. So I think I need a larger spindle ( equal on both sides )
I found this, will it work???
https://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWNX:IT
1. overall length of spindle from end-to-end
2. right length of spindle from bearing-track to outer end
3. left length of spindle from bearing-track to other end
Only with those three pieces of data can anyone make a guess over the internet if a replacement spindle of a certain dimension would work for your bike. Also the unknown condition of the cups suggests buying a complete cartridge-BB may be your best option.
BTW, the plastic tube keeps debris falling down the seat-tube from contaminating your BB-bearings.
Last edited by DannoXYZ; 03-30-11 at 11:07 PM.
#14
Banned
1. overall length of spindle from end-to-end
2. right length of spindle from bearing-track to outer end
3. left length of spindle from bearing-track to other end
2. right length of spindle from bearing-track to outer end
3. left length of spindle from bearing-track to other end
to a hollow, bolt fixed type ,
note the end of the taper, minus the threads that the nut screws onto.
that is a more useful overall length comparison.
Thread
Thread Starter
Forum
Replies
Last Post
BesidesDaniel
Bicycle Mechanics
18
11-29-10 10:53 PM