BikeE pedal problem

Wrap the threads with "serving line" used by sailors on wire rope to protect it from corrosion.
Should take up slack from deformed or "stretched" threads and allow pedal to lock into crank.

Bri <"Share,D,Computer"@boeing.com> wrote in message news:<[email hidden]>...

Quoted message said:

I just discovered that the female threads in the frame of my bikeE where the pedal crank shaft
goes through appear to have stretched in diameter so that the threaded bearing retaining fastener
and the associated shaft and bearings wobbles and I don't seem to be able to tighten up the shaft.
Does anyone have any idea how I should fix this situation? "and I know buying a new bike is the
obvious answer but I'm tapped out"

Thanks, Bri.

Bike Tools Etc. sells bottom bracket cartridges that don't require threads. Go to
biketoolsetc.combiketoolsetc.comOpen ↗ and search for "BB993" and you'll get a listing of the different spindle
lengths. I'd recommend installing this with plenty of Loctite.

Jeff

A helicoil insert may be your remedy. Helicoils are used often in the metals industries to repair
old thread by using a helicoil tool,which re-threads the old hole and installs the helicoil to the
thread desired.. Check with tool stores or machining supply companies. Arlen

"Bri" <"Share,D,Computer"@boeing.com> wrote in message "]news:[email hidden]...

Quoted message said:

I just discovered that the female threads in the frame of my bikeE where the pedal crank shaft
goes through appear to have stretched in diameter so that the threaded bearing retaining fastener
and the associated shaft and bearings wobbles and I don't seem to be able to tighten up the shaft.
Does anyone have any idea how I should fix this situation? "and I know buying a new bike is the
obvious answer but I'm tapped out"

Thanks, Bri.

<[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

A helicoil insert may be your remedy. Helicoils are used often in the metals industries to repair
old thread by using a helicoil tool,which re-threads the old hole and installs the helicoil to the
thread desired.. Check with tool stores or machining supply companies. Arlen

I really doubt there's a helicoil and tap available for the 1.37" x 24 tpi crank bracket thread. If
there is, it's going to be hellaciously expensive.

I've heard of these kind of repairs being done with JB Weld. Fill in the damaged threads then retap
with the correct piloted tap. A really exceptional bike shop would know how to do this.

Jeff

[email hidden] (Jeff Wills) wrote in
:"]news:[email hidden]:

Quoted message said:

<[email hidden]> wrote in message
news:<[email hidden]>...

Quoted message said:

A helicoil insert may be your remedy. Helicoils are used often in the metals
industries to repair old thread by using a helicoil tool,which re-threads the
old hole and installs the helicoil to the thread desired.. Check with tool
stores or machining supply companies. Arlen

I really doubt there's a helicoil and tap available for the 1.37" x 24 tpi
crank bracket thread. If there is, it's going to be hellaciously expensive.

I've heard of these kind of repairs being done with JB Weld. Fill in the
damaged threads then retap with the correct piloted tap. A really exceptional
bike shop would know how to do this.

Jeff

If one is exceptionally cheap, and crafty, one can thoroughly clean the old
threads, apply epoxy substance, and then thread in a BB cup that has had the
threads well lubricated. The danger of course is that the cup will be
epoxied in place.

rorschandt
--
May all beings be happy. May they be joyous and live in safety. All living
beings, whether weak or strong, in high or middle or low realms of existence,
small or great, visible or invisible, near or far, born or to be born, Let no
one deceive another, nor despise any being in any state; Let none by anger or
hatred wish harm to another. Even as a mother at the risk of her life watches
over and protects her only child, so with a boundless mind should one cherish
all living things,

First, I think it'll be pretty tough finding a helicoil that
big. Second, in all the helicoil installations I've done,
you need to drill out the offending hole because the
thickness of the helicoil takes up space and that means your
BB housing would be even thinner still, and apt to
stretch/crack even more than now.

Replace the stock BB with a sealed cartridge type, like the
ones pictured here:
jensonusa.comsub.aspxOpen ↗

You can buy sealed BBs that don't have threads on them
specifically for when the BB threads on the frame are
stripped. The ones I use on my trikes cost about $12 Cdn.

Quoted message said:

A helicoil insert may be your remedy. Helicoils are used
often in the

metals

Quoted message said:

industries to repair old thread by using a helicoil
tool,which re-threads the old hole and installs the
helicoil to the thread desired.. Check with tool stores or
machining supply companies. Arlen

Quoted message said:

I just discovered that the female threads in the frame
of my bikeE where the pedal crank shaft goes through
appear to have stretched in diameter so that the
threaded bearing retaining fastener and the associated
shaft and bearings wobbles and I don't seem to be able
to tighten up the shaft. Does anyone have any idea how I
should fix this situation? "and I know buying a new bike
is the obvious answer but I'm tapped out"

Thanks, Bri.