T.R | Title | User | Personal Name | Date | Lines |
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822.1 | Go Sealed | AKOV11::FULLER | | Fri Aug 12 1988 16:44 | 4 |
| It may be better to look at a sealed mechanism where you won't need
to use the threads. I believe the Phil Wood system will work.
steve
|
822.2 | where to get? | 31904::MILLING | Bob Milling, MKO2-2/K03, 264-2068 | Fri Aug 12 1988 18:13 | 7 |
| Ah, the light at the end of the tunnel - I can see it now.
ref: .1 Now that you mention it, I've actually seen such things
but can't think of any suppliers/sources. Other than Nashbar and
Performance, any ideas?
Bob
|
822.3 | | BANZAI::FISHER | Keep 'em rollin' | Mon Aug 15 1988 06:41 | 9 |
| I think a Phil Wood BB would still have hte problem. Most dealers
will order one for you. You must specify what cranks you are using
since there are different tapers and they can easily order the wrong
one for you and then you stuck in a loop while they exchange it.
As for dealers that might have one in stock: I would call the
Bicycle Exchange in Cambridge or Wheel works in Belmont.
ed
|
822.4 | Fat Chance's use them too.. | BIGALO::PFISTER_ROB | I cant put *THAT* here..... | Mon Aug 15 1988 09:20 | 6 |
| Fat City uses a thread-less BB as well. I dont know as if they'll
sell just a bottom bracket to ya, but it may be worth a try.
Fat City is in Somerville, Mass [dont remember the number].
Robb
|
822.5 | threadless??? | SUSHI::KMACDONALD | AntiFenestration Specialist | Mon Aug 15 1988 09:36 | 4 |
| Phil Wood bottom brackets aren't threadless. They use the same threads
as any other BB, but don't have the flange on the end of the fixed cup
and the ring on the adjustable cup like "standard" BB's.
ken
|
822.6 | Fisher/Fat Chance Threadless | AKOV11::FULLER | | Mon Aug 15 1988 10:40 | 13 |
| My Fisher MTN bike has a threadless BB. I am sure that this is
possible. My recommendation is to call a few good mountain bike
dealers who sell Fisher or Fat Chance. If you use their BB, remember
they are made for a triple chain ring.
The only other solution that I know is to have it Helicoiled (sp),
where a new thread liner is put in. This probably won't be easy
nor cheap.
steve
|
822.7 | Edco BB - or Locktite rethread compound | 31904::MILLING | Bob Milling, MKO2-2/K03, 264-2068 | Mon Aug 15 1988 11:12 | 38 |
| The Bicycle Exchange in Cambridge does have Phil Wood's in stock
in a variety of tapers to accommodate the most popular cranks.
But, as stated in .5, they are not threadless.
The Bicycle Exchange also had an Edco BB in stock that is threadless.
It uses sealed bearings and "cups" that are eliptically shaped on
the mating surfaces. The idea is that in one position, the outside of
the cups are aligned with the surface of the main cylinder and the
whole thing slides into the BB shell. Then, you use a wrench an turn
the cups a quarter to half rotation to get an "expansion" of what
looked like less than 1 mm to lock everything in place. Mechanically,
this is a good solution but is a bit steep at $85.00. Oh yes, there
is no lip of any kind on either cup and no equivalent to a lockring,
so it might look a little strange to have the faces of the BB shell
exposed.
This whole mess started because CycleArt in CA told me they could
retap from French to English. Turns out that the French is larger
in diameter, not smaller. The guy in the parts department at Bicycle
Exchange said you can retap English to French or either of these
to Italian which is the largest. Anyway, I didn't look for a copy
of Sullivan's to verify all this in advance and was left with English
threads and real loose fitting cups.
Knowing that the Edco is available, for a price, I decided to have
a go at Locktite's chemical solution to threading problems. One
package which is good for "one to three applications" cost less
than $5.00. I followed the directions to the letter and now have
a snug fitting adjustable cup, no squeaky noises, and much less
tilting of the chainrings. Tonight I'll do the other side and
that should be that. This stuff is supposed to cure to about
80% of the strength of the original metal. Excessive torque seems
to be the biggest concern/warning expressed in the instructions.
Fortunately, that should not be a problem in this case. Other
forces will be high, however, so I'll just have to wait and see
how it holds up.
Bob
|
822.8 | How about one more tap? | CUJO::LEBLANC | | Mon Aug 15 1988 15:10 | 4 |
| If indeed Italian is larger then could you retap for italian and
just get new bearing cups and adjuster? Maybe the shop that screwed
it up to begin with should do the retap and buy you the new cups.
This may be the soundest solution.
|
822.9 | Yes, but Locktite is working | 31904::MILLING | Bob Milling, MKO2-2/K03, 264-2068 | Wed Aug 17 1988 09:04 | 8 |
| Ref: .8 Yes, I would really like the shop that messed things
up to now fix the problem. But, I don't want to have to pack up
the frame and ship it off again.
Anyway, the Locktite method I mentioned previously seems to be holding
up after a good 25-miler last night. So far, so good...
Bob
|
822.10 | Locktite is good schtuff ! | MENTOR::REG | Just browsing; HONEST, I'm BROKE ! | Tue Aug 30 1988 11:31 | 17 |
|
I used Loctite on a bottom bracket one time. I wanted to take
the triple crankset off the ATB and put it on the road bike. I
don't remember exactly which pieces wouldn't match up, but it went
something like having to use the road bike's cups because they were
French thread with the ATB spindle, but since the races are closer
together in an English BB the cups (French, still with me ?) went
in too far to get a lock ring on. Since this was the night before
the Mt. W hillclimb I decided to just goop it up with loctite and
have a readymade excuse for DNF'ing in case I needed it. It worked
well, I think I left it that way for well over a month. Locktite
comes in several different grades, identified by colour, beware
the one that claims to be for "permanent" thread locking, it means
*PERMANENT* !
Reg
|