Cut Tires

Chain Stretcher <[email hidden]> wrote in news:1188947905.761230.269000
@d55g2000hsg.googlegroups.com:

Quoted message said:

I just recently purchased a new bike and within a hundred miles I put
a small slice in the tire. It didn't go all the way through but it is
still there and I'm worried about riding with it.

Should I just buy a new tire or is there a way to repair it. Any
advice on the subject would be appreciated.

If the cut is small and the casing is undamaged, you can usually glue the cut
shut. Use ShooGoo or similar.

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

Quoted message said:

Chain Stretcher <[email hidden]> wrote in
news:1188947905.761230.269000
@d55g2000hsg.googlegroups.com:

Quoted message said:

I just recently purchased a new bike and within a hundred miles I put
a small slice in the tire. It didn't go all the way through but it is
still there and I'm worried about riding with it.

Should I just buy a new tire or is there a way to repair it. Any
advice on the subject would be appreciated.

If the cut is small and the casing is undamaged, you can usually glue the
cut
shut. Use ShooGoo or similar.

While I agree with your solution, "gluing the cut shut" is inaccurate. You
are filling the slit, not rejoining the two cut sides.

Quoted message said:

Quoted message said:

If the cut is small and the casing is undamaged, you can usually glue the
cut
shut. Use ShooGoo or similar.

While I agree with your solution, "gluing the cut shut" is inaccurate. You
are filling the slit, not rejoining the two cut sides.

I have a bike with Michelin Pro2 Race which has sustained some cuts
near the center of the tire. Will ShooGoo (or whatever) hold up to
direct contact with asphalt, or is 'gluing the cut' only appropriate
when the sidewall is damaged? These particular tires have been ridden
~100 miles.

In other news, I blew out two Michelin Pro2 Race tires this weekend
(one front, one rear, same day). The front was merely a flat, but
after the ride I found a significant slit in the sidewall (inner tube
beginning to 'poke thru'😉. For no good reason, a 3" section of the
kevlar bead released from the rear rim (the rubber in this area
apparently disintegrated, exposing the yellow-ish thread of the
bead). Neither tire is salvageable. Arggh..those things are
expensive. I've been using 'em for 3 years without incident (except
one pinch flat on a bridge expansion joint), so I guess it isn't so
bad to replace them. Both incidents were on the flat at low speeds.
The ride had several 40mph descents, so things could have been much
worse...and a helpful passerby offered me a ride and saved me a 10
mile hike in unforgiving footwear.

get the tire off the rim,
examine the inside both visually and with a sensitive finger tip. Find
a bum or hole? Hold the outside tread up to a bright light: see
anything?
Open the outside cut with thumbs: are the white cords cut?

If a hole going thru from outside to inside is found, uneeda BOOT. Cut
a tube section to fit over the hole maybe 4 inches either side, clean
the boot where it'll abut the hole and cold (refrig) Goop the hole,
insert BOOT, insert tube section (only drag out what's necessary, the
other tube part is intsalled), wrap BOOT around tube, bead tire and
BEFORE pumping tire, fill outside hole with cold Goop (having prepped
the hole with CHO and a knife scraper) spreading as before. Good to
have a 1x1" poly bottle as a spreader for Goop. Goop is spread and
blob pushed down into the hole as a continous movement so the Goop
doesn't cling to the poly not the hole.
then pump the tire 1/3 full. Pressing Goop together not out is the
idea. The more pressure the larger the hole, stretching Goop to
breaking before the stuff sets. Follow Goop set instructions: set for
3 DAYS IN WARM SPACE.
be sure the inside Goop and outside Goop have adhesive contact!

Chain Stretcher said:

I just recently purchased a new bike and within a hundred miles I put
a small slice in the tire. It didn't go all the way through but it is
still there and I'm worried about riding with it.

Should I just buy a new tire or is there a way to repair it. Any
advice on the subject would be appreciated.

most small cuts can just be ignored, and that's what the vast majority
of cyclists do. for the most part, small cuts and slices have
negligible chances of either contributing to flats or a failure of the
casing, which is the fabric structural part of the tire that resides
underneath the rubber you see. even cuts that have caused minor damage
to the casing (ie, gone through it but nothing too gnarly) are
unlikely to progress to more damage in the casing. (in those cases,
the thing to generally do is either watch out for bulges or
progression of the damage to the casing, or replace the tire).

this is presuming a definition of "small slice" about 8mm long or
shorter, with the damage clearly visible on the inflated tire, but
there's no deformation or casing showing through. it's pretty easy to
pick up this kind of thing on most tires.

not saying that shoegoo is necessarily a bad idea (i've never used
it), but most folks get along with nothing of the sort.

David Bonnell said:

Quoted message said:

Quoted message said:

If the cut is small and the casing is undamaged, you can usually glue the
cut
shut. Use ShooGoo or similar.

While I agree with your solution, "gluing the cut shut" is inaccurate. You
are filling the slit, not rejoining the two cut sides.

I have a bike with Michelin Pro2 Race which has sustained some cuts
near the center of the tire. Will ShooGoo (or whatever) hold up to
direct contact with asphalt,

Yes, I've been experimenting with ShooGoo this summer. It holds up,
provided you let it cure/dry for 24+ hours before using, and make sure
to clean the area well. I use soap, water, and a toothbrush. As far as
I can tell, the bond with the tire is permanent. It is definitely
extremely durable. With a little effort, you can even make the repair
look good.

or is 'gluing the cut' only appropriate

Quoted message said:

when the sidewall is damaged? These particular tires have been ridden
~100 miles.

In other news, I blew out two Michelin Pro2 Race tires this weekend
(one front, one rear, same day). The front was merely a flat, but
after the ride I found a significant slit in the sidewall (inner tube
beginning to 'poke thru'😉. For no good reason, a 3" section of the
kevlar bead released from the rear rim (the rubber in this area
apparently disintegrated, exposing the yellow-ish thread of the
bead). Neither tire is salvageable.

I can't help with the bead failure, but a small slit can be sewn shut
with dental floss. Once you've given structural strength with stitching
to hold the slit shut, put a tire patch over the inside to keep the
stitches from abrading your tube. I've done this for years with good
results. Just to be safe, I only use sewn tires on the rear; a front
blowout, even though I've never had one, is too much to risk.

Mark J.

Arggh..those things are

Quoted message said:

expensive. I've been using 'em for 3 years without incident (except
one pinch flat on a bridge expansion joint), so I guess it isn't so
bad to replace them. Both incidents were on the flat at low speeds.
The ride had several 40mph descents, so things could have been much
worse...and a helpful passerby offered me a ride and saved me a 10
mile hike in unforgiving footwear.

My friend Doug had a tire blow out on the 600K brevet. Upon closer
examination, he found that the sidewall and the bead had parted company.
He happened to have a tube of SuperGlue in his kit and glued the
sidewall fabric around the bead and rode it another 200 km back to the
finish. He was still riding the tire a week later but has since retired
(no pun intended) it. He brought it over to show me along with the
cracked stem of which I already posted photos (both were his). It's
quite remarkable, in about 2500 miles of use the beads were coming
through the chafed-away casing in multiple spots... but the SuperGlue
still held for well over 200 km.

8mm?

http://www.usgs.gov/science/combine.php?term=theme%2F700&with=theme%2F501

datakoll said:

8mm?

http://www.usgs.gov/science/combine.php?term=theme%2F700&with=theme%2...

I want to thank everybody for you help. I don't think the cut is big
enough to cause any major problems but I don't want to have a flat
while cruising at 40 mph downhill either. But the cut is about 5 to 6
mm in length and does not show any signs of going through the casing
so I'm going to push on and see what happens. Once again I want to
thank you for your help in this matter.

Chain Stretcher said:

datakoll said:

8mm?

Quoted message said:

http://www.usgs.gov/science/combine.php?term=theme%2F700&with=theme%2...

I want to thank everybody for you help. I don't think the cut is big
enough to cause any major problems but I don't want to have a flat
while cruising at 40 mph downhill either. But the cut is about 5 to 6
mm in length and does not show any signs of going through the casing
so I'm going to push on and see what happens. Once again I want to
thank you for your help in this matter.

ADIOS

Carl Sundquist said:

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

Quoted message said:

Chain Stretcher <[email hidden]> wrote in
news:1188947905.761230.269000
@d55g2000hsg.googlegroups.com:

Quoted message said:

I just recently purchased a new bike and within a hundred miles I put
a small slice in the tire. It didn't go all the way through but it is
still there and I'm worried about riding with it.

Should I just buy a new tire or is there a way to repair it. Any
advice on the subject would be appreciated.

If the cut is small and the casing is undamaged, you can usually glue
the cut
shut. Use ShooGoo or similar.

While I agree with your solution, "gluing the cut shut" is inaccurate.
You are filling the slit, not rejoining the two cut sides.

If you put the right sort of glue in and deflate the tyre to close up
the gap, it can rejoin it. Takes time though.