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tech / rec.bicycles.tech / Re: Rolling resistance

SubjectAuthor
* Rolling resistanceFrank Krygowski
`* Re: Rolling resistanceCatrike Rider
 +* Re: Rolling resistancefunkma...@hotmail.com
 |`* Re: Rolling resistanceCatrike Rider
 | `- Re: Rolling resistancefunkma...@hotmail.com
 `* Re: Rolling resistanceTom Kunich
  +- Re: Rolling resistanceCatrike Rider
  `- Re: Rolling resistancefunkma...@hotmail.com

1
Rolling resistance

<tl5pjm$2md38$2@dont-email.me>

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From: frkry...@sbcglobal.net (Frank Krygowski)
Newsgroups: rec.bicycles.tech
Subject: Rolling resistance
Date: Thu, 17 Nov 2022 12:04:53 -0500
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 by: Frank Krygowski - Thu, 17 Nov 2022 17:04 UTC

https://www.velonews.com/gear/tech-wearables/technical-faq-tire-rolling-resistance-as-a-function-of-speed/

Summary: It's complicated.

--
- Frank Krygowski

Re: Rolling resistance

<57scnh971lq9gogrbd795p9u6shvncci5o@4ax.com>

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From: solo...@drafting.not (Catrike Rider)
Newsgroups: rec.bicycles.tech
Subject: Re: Rolling resistance
Date: Thu, 17 Nov 2022 12:41:24 -0500
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 by: Catrike Rider - Thu, 17 Nov 2022 17:41 UTC

On Thu, 17 Nov 2022 12:04:53 -0500, Frank Krygowski
<frkrygow@sbcglobal.net> wrote:

>https://www.velonews.com/gear/tech-wearables/technical-faq-tire-rolling-resistance-as-a-function-of-speed/
>
>Summary: It's complicated.

There's more to it than just tire size, but different tires rolling
resistance is insignificant at the speeds you ride, Krygowski.

https://www.bicyclerollingresistance.com/specials/crr-speed-test#conclusion

Re: Rolling resistance

<d73e0a34-97f6-4e56-ad57-753d991331e7n@googlegroups.com>

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Subject: Re: Rolling resistance
From: funkmast...@hotmail.com (funkma...@hotmail.com)
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 by: funkma...@hotmail.co - Thu, 17 Nov 2022 18:58 UTC

On Thursday, November 17, 2022 at 12:41:25 PM UTC-5, Catrike Rider wrote:
> On Thu, 17 Nov 2022 12:04:53 -0500, Frank Krygowski
> <frkr...@sbcglobal.net> wrote:
>
> >https://www.velonews.com/gear/tech-wearables/technical-faq-tire-rolling-resistance-as-a-function-of-speed/
> >
> >Summary: It's complicated.
> There's more to it than just tire size,

Congratulations. You accurately alluded to the information contained in Franks link - "“When we change the load, tire pressure, inner tube, rim structure and rim width in addition to the speed, the only possibility to find out the rolling resistance of the tire is to perform measurements." In other words, it's complicated.

> but different tires rolling
> resistance is insignificant at the speeds you ride, Krygowski.
>
> https://www.bicyclerollingresistance.com/specials/crr-speed-test#conclusion

Congratulations. You posted a link that makes the same claims Franks do.

Do you have a point?

Re: Rolling resistance

<4r6dnhhsonb3c3lsos0i842mgdkupvt1ol@4ax.com>

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From: solo...@drafting.not (Catrike Rider)
Newsgroups: rec.bicycles.tech
Subject: Re: Rolling resistance
Date: Thu, 17 Nov 2022 15:39:51 -0500
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 by: Catrike Rider - Thu, 17 Nov 2022 20:39 UTC

On Thu, 17 Nov 2022 10:58:09 -0800 (PST), "funkma...@hotmail.com"
<funkmasterxx@hotmail.com> wrote:

>On Thursday, November 17, 2022 at 12:41:25 PM UTC-5, Catrike Rider wrote:
>> On Thu, 17 Nov 2022 12:04:53 -0500, Frank Krygowski
>> <frkr...@sbcglobal.net> wrote:
>>
>> >https://www.velonews.com/gear/tech-wearables/technical-faq-tire-rolling-resistance-as-a-function-of-speed/
>> >
>> >Summary: It's complicated.
>> There's more to it than just tire size,
>
>Congratulations. You accurately alluded to the information contained in Franks link - "“When we change the load, tire pressure, inner tube, rim structure and rim width in addition to the speed, the only possibility to find out the rolling resistance of the tire is to perform measurements." In other words, it's complicated.

Actually, it's pretty simple. Put a set of tires on the bike, roll
down a hill, measure speed and distance rolled at the bottom, and then
try another set of tires. Do it on days when the weather is the same.

Some time later. I discovered the site I posted and found that their
tests agreed with what I found.

>> but different tires rolling
>> resistance is insignificant at the speeds you ride, Krygowski.
>>
>> https://www.bicyclerollingresistance.com/specials/crr-speed-test#conclusion
>
>Congratulations. You posted a link that makes the same claims Franks do.

Indeed... and test data that supports those claims.

>Do you have a point?

Is there a rule that I cannot agree with Frank's post?

Re: Rolling resistance

<5beb816b-cbf1-4748-afff-19113467973en@googlegroups.com>

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Subject: Re: Rolling resistance
From: cyclin...@gmail.com (Tom Kunich)
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 by: Tom Kunich - Thu, 17 Nov 2022 21:38 UTC

On Thursday, November 17, 2022 at 9:41:25 AM UTC-8, Catrike Rider wrote:
> On Thu, 17 Nov 2022 12:04:53 -0500, Frank Krygowski
> <frkr...@sbcglobal.net> wrote:
>
> >https://www.velonews.com/gear/tech-wearables/technical-faq-tire-rolling-resistance-as-a-function-of-speed/
> >
> >Summary: It's complicated.
> There's more to it than just tire size, but different tires rolling
> resistance is insignificant at the speeds you ride, Krygowski.
>
> https://www.bicyclerollingresistance.com/specials/crr-speed-test#conclusion
You can't trust anything that comes out of Velonews. It's like listening to the stupid five.

Re: Rolling resistance

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From: solo...@drafting.not (Catrike Rider)
Newsgroups: rec.bicycles.tech
Subject: Re: Rolling resistance
Date: Thu, 17 Nov 2022 17:05:18 -0500
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 by: Catrike Rider - Thu, 17 Nov 2022 22:05 UTC

On Thu, 17 Nov 2022 13:38:57 -0800 (PST), Tom Kunich
<cyclintom@gmail.com> wrote:

>On Thursday, November 17, 2022 at 9:41:25 AM UTC-8, Catrike Rider wrote:
>> On Thu, 17 Nov 2022 12:04:53 -0500, Frank Krygowski
>> <frkr...@sbcglobal.net> wrote:
>>
>> >https://www.velonews.com/gear/tech-wearables/technical-faq-tire-rolling-resistance-as-a-function-of-speed/
>> >
>> >Summary: It's complicated.
>> There's more to it than just tire size, but different tires rolling
>> resistance is insignificant at the speeds you ride, Krygowski.
>>
>> https://www.bicyclerollingresistance.com/specials/crr-speed-test#conclusion
>You can't trust anything that comes out of Velonews. It's like listening to the stupid five.

Looks like news for people who watch bicycle racing. Not for me, I've
not much of a watcher..

Re: Rolling resistance

<2cc6d250-9af7-4146-bcaa-12b419b9d456n@googlegroups.com>

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Subject: Re: Rolling resistance
From: funkmast...@hotmail.com (funkma...@hotmail.com)
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 by: funkma...@hotmail.co - Fri, 18 Nov 2022 10:28 UTC

On Thursday, November 17, 2022 at 3:39:57 PM UTC-5, Catrike Rider wrote:
> On Thu, 17 Nov 2022 10:58:09 -0800 (PST), "funkma...@hotmail.com"
> <funkma...@hotmail.com> wrote:
>
> >On Thursday, November 17, 2022 at 12:41:25 PM UTC-5, Catrike Rider wrote:
> >> On Thu, 17 Nov 2022 12:04:53 -0500, Frank Krygowski
> >> <frkr...@sbcglobal.net> wrote:
> >>
> >> >https://www.velonews.com/gear/tech-wearables/technical-faq-tire-rolling-resistance-as-a-function-of-speed/
> >> >
> >> >Summary: It's complicated.
> >> There's more to it than just tire size,
> >
> >Congratulations. You accurately alluded to the information contained in Franks link - "“When we change the load, tire pressure, inner tube, rim structure and rim width in addition to the speed, the only possibility to find out the rolling resistance of the tire is to perform measurements." In other words, it's complicated.
>
> Actually, it's pretty simple. Put a set of tires on the bike, roll
> down a hill, measure speed and distance rolled at the bottom, and then
> try another set of tires. Do it on days when the weather is the same.

Simple test, complicated variable interactions. Again, read for comprehension.

>
> Some time later. I discovered the site I posted and found that their
> tests agreed with what I found.

<chuckle>
Forgive me for being dubious that you've _ever_ performed a rollout to determine tire rolling resistance - Right up there with kunich claiming to have helped discover the AIDS virus.

> >> but different tires rolling
> >> resistance is insignificant at the speeds you ride, Krygowski.
> >>
> >> https://www.bicyclerollingresistance.com/specials/crr-speed-test#conclusion
> >
> >Congratulations. You posted a link that makes the same claims Franks do.
> Indeed... and test data that supports those claims.
> >Do you have a point?
> Is there a rule that I cannot agree with Frank's post?

I see, so when Frank writes "Summary: It's complicated. ", and you reply "Actually, it's pretty simple.", you're agreeing with him. Got it.

Re: Rolling resistance

<d9fbb7c5-f6f1-4269-a66c-57d18100a84dn@googlegroups.com>

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Subject: Re: Rolling resistance
From: funkmast...@hotmail.com (funkma...@hotmail.com)
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 by: funkma...@hotmail.co - Fri, 18 Nov 2022 10:29 UTC

On Thursday, November 17, 2022 at 4:39:00 PM UTC-5, cycl...@gmail.com wrote:
> On Thursday, November 17, 2022 at 9:41:25 AM UTC-8, Catrike Rider wrote:
> > On Thu, 17 Nov 2022 12:04:53 -0500, Frank Krygowski
> > <frkr...@sbcglobal.net> wrote:
> >
> > >https://www.velonews.com/gear/tech-wearables/technical-faq-tire-rolling-resistance-as-a-function-of-speed/
> > >
> > >Summary: It's complicated.
> > There's more to it than just tire size, but different tires rolling
> > resistance is insignificant at the speeds you ride, Krygowski.
> >
> > https://www.bicyclerollingresistance.com/specials/crr-speed-test#conclusion
> You can't trust anything that comes out of Velonews. It's like listening to the stupid five.

oh, the irony....

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