Punctures on the trainer?...help!!!!!!!!

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

Quoted message said:

Last Wednesday I fitted puncture resistant liners to my tyres (700x23) -

fed

Quoted message said:

up with punctures in the winter. Put the bike on the trainer afterwards

and

Quoted message said:

rode for half an hour...until the rear tyre went flat...puncture. I

thought

Quoted message said:

I may have nipped the tube when easing the tyre over the last bit of rim with levers, although the
puncture appeared to be on the tread side of the tube. Repaired the puncture and refitted without
use of tubes...came down in the morning...flat again. Repaired in Friday evening..all was well.
Went out for 100km ride on Sunday...no problems. 2 hours ago I put in a 1 hour session on the
trainer...took the bike off...puncture.

What's going on? I've checked the tyre inner, I've checked the rim tape. It only seems to happen
when on the Tacx trainer. I'm going to repair it tomorrow because it's [censored] me off tonight! I'll
mark the tube where it

is

Quoted message said:

punctured and check around that area specifically.

Any suggestions in the mean time?

Regards, and feeling as deflated as my tube...

--
Mark
______________________________________

"Just ask yourself: What would Scooby Doo?"

Apologies for replying to my own post! Sitting typing away at my dissertation and the puncture was
really bugging me so I decided to repair it tonight after all (any excuse to get away from Uni
work!). The puncture was in line with the join in the puncture resistant lining. I have no idea why
it was causing a puncture but I have tried taping over the joint with strips of electrical tape to
see if it makes a difference.

Why only on the trainer though???????

--
Mark
______________________________________

"Just ask yourself: What would Scooby Doo?"

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

Quoted message said:

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

Quoted message said:

Last Wednesday I fitted puncture resistant liners to my tyres (700x23) -

fed

Quoted message said:

up with punctures in the winter. Put the bike on the trainer afterwards

and

Quoted message said:

rode for half an hour...until the rear tyre went flat...puncture. I

thought

Quoted message said:

I may have nipped the tube when easing the tyre over the last bit of rim with levers, although
the puncture appeared to be on the tread side of

the

Quoted message said:

Quoted message said:

tube. Repaired the puncture and refitted without use of tubes...came

down

Quoted message said:

Quoted message said:

in the morning...flat again. Repaired in Friday evening..all was well. Went out for 100km ride
on Sunday...no problems. 2 hours ago I put in a

1

Quoted message said:

Quoted message said:

hour session on the trainer...took the bike off...puncture.

What's going on? I've checked the tyre inner, I've checked the rim

tape.

Quoted message said:

Quoted message said:

It only seems to happen when on the Tacx trainer. I'm going to repair

it

Quoted message said:

Quoted message said:

tomorrow because it's [censored] me off tonight! I'll mark the tube where

it

Quoted message said:

is

Quoted message said:

punctured and check around that area specifically.

Any suggestions in the mean time?

Regards, and feeling as deflated as my tube...

--
Mark
______________________________________

"Just ask yourself: What would Scooby Doo?"

Apologies for replying to my own post! Sitting typing away at my dissertation and the puncture was
really bugging me so I decided to repair it tonight after all (any excuse to get away from Uni
work!). The

puncture

Quoted message said:

was in line with the join in the puncture resistant lining. I have no

idea

Quoted message said:

why it was causing a puncture but I have tried taping over the joint with strips of electrical
tape to see if it makes a difference.

Why only on the trainer though???????

--
Mark
______________________________________

"Just ask yourself: What would Scooby Doo?"

Constant pressure ?

Graham

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

Quoted message said:

Why only on the trainer though???????

Because it puts a much greater stress on the tyre due to the smaller and highly curved contact area.
My tyres used to get very hot when turbo training, and ended up going sticky and blistered. My
trainer has a manually adjusted contact pressure with a bolt to tighten rather than the more common
spring-loaded variety, and I had to do it up quite tight to prevent slipping.

James

James Annan said:

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

Quoted message said:

Why only on the trainer though???????

Because it puts a much greater stress on the tyre due to the smaller and highly curved contact
area. My tyres used to get very hot when turbo training, and ended up going sticky and blistered.
My trainer has a manually adjusted contact pressure with a bolt to tighten rather than the more
common spring-loaded variety, and I had to do it up quite tight to prevent slipping.

James

Yup, that sounds about right to me. It's the deformation of the tyre what does it, causing the liner
to fret against the tube. I used to see it a lot. You can try using a higher pressure in your tyres
and melting the ends of the tape (to get rounded edges), especially the corners.

--
Roger Thorpe

My email address is spamtrapped. You can work it out!

MSA said:

The puncture was in line with the join in the puncture resistant lining. I have no idea why it was
causing a puncture but I have tried taping over the joint with strips of electrical tape to see if
it makes a difference.

Why only on the trainer though???????

This type of thing is known to cause punctures in normal road-use as well, so I suspect it would
only be a matter of time (and luck).

I wouldn't touch 'em - either just risk getting punctures or get thicker tyres instead.

~PB