Tubeless tire FAQ

wrote:
On Thursday, June 18, 2020 at 8:53:04 AM UTC-7, Frank Krygowski wrote:
Here's Jan Heine's tubeless tire FAQ, posted June 17, 2020

https://www.renehersecycles.com/cate...ting-and-tech/

--
- Frank Krygowski

Let's see what the group can make of this: A friend is rather large and
heavy (though he is riding it off slowly). He had 23 mm Panasonic tires
on his Trek Madone and got his first flat Saturday after about six
months. The wheels are Mavic Kyseriums. He would run 120 psi.

I don't how he can ride those things since another friend has to replace
his once a year and weighs 20 lbs less bare minimum.

But I offered to sell him a set of GP5000TL 25 mm tires. (Actually I
offered to give them to him and he refused and wanted to pay)

Those GP5000's absolutely refused to mount and he flatted two tubes
trying and I tried everything I could and they would not mount.

I have a new (leftover) Performance innertube of 19-26 mm tire size. So
again he had to pay for it despite I couldn't do anything with a 48 mm Presta valve.

The tire inside was so tight that I couldn't even get a tire "iron" under
it except with a great deal of work and I couldn't get the tire off of
the wheel on one side until I lubed it with soapy water. The tire cord
on each side expanded to the outside of the wheel rim hook bead. There
didn't seem to be any cup in the rim center at all.

Finally he got tired of messing with it and took it down to his local
bike shop who said you couldn't put tubeless tires on clincher rims. My
experience is that it is a hell of a lot easier to put tubeless tires on
a standard clincher rims than on tubeless rims because of the narrower center well.

What do you think about all of this?


My understanding was similar that a tubeless rim would be tighter, as the
tyre is more at risk of blowing off, so a non tubeless rim should be
easier.

To be honest I’d not try getto tubeless on road kit, be that road/gravel as
the pressures are too high.

Some rims/tyres just are total gits though to get on/off. Regardless of
tech.

Roger Merriman

Frank Krygowski wrote:
On 6/21/2020 11:38 AM, Roger Merriman wrote:
Tosspot wrote:
On 18/06/2020 17:52, Frank Krygowski wrote:
Here's Jan Heine's tubeless tire FAQ, posted June 17, 2020

https://www.renehersecycles.com/cate...ting-and-tech/

"Also remember to top up the sealant at least once a month", that isn't
what I would call great progress. I though it was more like once a
year, or even never.


I’d take his advice with a healthy pinch of salt, he’s not a fan of
tubeless and I’d seriously question his impartiality.

I could be remembering wrong, but I thought he seemed pretty open to
tubeless when it first came out. He's a fan of low tire pressures, and
ISTR him liking the idea of no pinch flats.

He’s all about supple sidewalls which isn’t what tubeless need ie stiff
sidewalls so they don’t burp or come off the rim.

Lot of his stuff has a feel of opinion dressed up as facts.

Roger Merriman

On 6/23/2020 6:36 PM, Roger Merriman wrote:
Frank Krygowski wrote:
On 6/21/2020 11:38 AM, Roger Merriman wrote:
Tosspot wrote:
On 18/06/2020 17:52, Frank Krygowski wrote:
Here's Jan Heine's tubeless tire FAQ, posted June 17, 2020

https://www.renehersecycles.com/cate...ting-and-tech/

"Also remember to top up the sealant at least once a month", that isn't
what I would call great progress. I though it was more like once a
year, or even never.


I’d take his advice with a healthy pinch of salt, he’s not a fan of
tubeless and I’d seriously question his impartiality.

I could be remembering wrong, but I thought he seemed pretty open to
tubeless when it first came out. He's a fan of low tire pressures, and
ISTR him liking the idea of no pinch flats.

He’s all about supple sidewalls which isn’t what tubeless need ie stiff
sidewalls so they don’t burp or come off the rim.

Lot of his stuff has a feel of opinion dressed up as facts.

I agree with that last sentence.

But he's far from unique that way in the bicycling world!

--
- Frank Krygowski

Frank Krygowski wrote:
On 6/23/2020 6:36 PM, Roger Merriman wrote:
Frank Krygowski wrote:
On 6/21/2020 11:38 AM, Roger Merriman wrote:
Tosspot wrote:
On 18/06/2020 17:52, Frank Krygowski wrote:
Here's Jan Heine's tubeless tire FAQ, posted June 17, 2020

https://www.renehersecycles.com/cate...ting-and-tech/

"Also remember to top up the sealant at least once a month", that isn't
what I would call great progress. I though it was more like once a
year, or even never.


I’d take his advice with a healthy pinch of salt, he’s not a fan of
tubeless and I’d seriously question his impartiality.

I could be remembering wrong, but I thought he seemed pretty open to
tubeless when it first came out. He's a fan of low tire pressures, and
ISTR him liking the idea of no pinch flats.

He’s all about supple sidewalls which isn’t what tubeless need ie stiff
sidewalls so they don’t burp or come off the rim.

Lot of his stuff has a feel of opinion dressed up as facts.

I agree with that last sentence.

But he's far from unique that way in the bicycling world!

True but I’ve little patience for such stuff!

Roger Merriman