changing ratios

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

Quoted message said:

OTOH, if 30x32 isn't low enough then nothing is going
to help.

Hows about 22 x 32 or even 22 x 34, commonplace on mtbs and
yes, I do use my 22 x 32 on steep road sections, mind you I
put that down to the knobbly tyres and know that I'd fly up
the same hill on my pukka road bike but unfortunately never
have it to hand to prove my assertion ;-)
--
Regards, Pete

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

Quoted message said:

On 10/5/04 11:36 am, in article 2g9497Fv2dU3@uni-

berlin.de said:

Mark South said:

OTOH, if 30x32 isn't low enough then nothing is going
to help.

Pish tosh! 24-34 will get one up most things,
particularly when combined with a 406 drive wheel.

Or in my case, if you lean forwards over the front wheel
to keep it on the ground..

Towing two children and shopping in a trailer up steep
hills is all about balance. You get overtaken by joggers.

The short but nasty hill up to my house has me in 24-34
daily (trailer and two kids). I get overtaken by strollers.

tony R.

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

Quoted message said:

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

Quoted message said:

OTOH, if 30x32 isn't low enough then nothing is going
to help.

Hows about 22 x 32 or even 22 x 34, commonplace on mtbs

I'm pretty sure that we were talking road to start with.

Quoted message said:

and yes, I do use my 22 x 32 on steep road sections,
mind you I put that down to the knobbly tyres and know
that I'd fly up the same hill on my pukka road bike but
unfortunately never have it to hand to prove my
assertion ;-)

I have taken my full-sus mtb out on my favourite quick road
loop to compare. I didn't use the bottom gear of 19", but I
did haul up the longest hill in the 22".

On the road bike I ride that hill in the 50". I do go faster
and it's more work but the tyre and wind resistance
differences seriously affect the gearing choice.

You have got me thinking about a 12-32 cassette and long-
cage mech though.

BTW for all my pedant friends out there, all numbers are
approximate.
--
Mark South Citizen of the World, Denizen of the Net <<Tiens!
Ce poulet a une grenade!

Mark South said:

You have got me thinking about a 12-32 cassette and long-
cage mech though.

My tourer has a 13-32 in 8 custom cassette, the chain is
derailed by a DeoreXT rear mech which is shifted by Dura
Ace levers.

In article <[email hidden]>, junk@raven-
family.com says...

Quoted message said:

Jon Senior said:

That said, an increase in the amount of cycling I do has
given me what where once known as "Yorkshire Thighs"
which has made the hill climbing significantly easier.

"Yorkshire born an' Yorkshire bred - strong in t' leg an'
thick in t' head" ;-)

<ducks>

Tony

it doesn't scan as well as the original though. :o)
--
.paul

If at first you don't succeed... Skydiving is probably not
the sport for you.

Jon Senior said:

The imagine of a trike, most of the way up a hill and
wheel spinning is quite amusing. I don't suppose you were
riding with someone who could provide photos?

I have a couple, but one is taken from a distance
sufficiently great that trike and Larrington appear as a
mere dot somewhere in the middle distance, while the other
was taken by me from the hot seat and displays the road and
one of my feet.

Alo they're on the babbage-box bakc at Larrington
Towers while I, for my sins, am still toiling in the
Nut Mines. Bah!

--

Dave Larrington - legslarry.beerdrinkers.co.uklegslarry.beerdrinkers.co.ukOpen ↗
===========================================================
Editor - British Human Power Club Newsletter
bhpc.org.ukbhpc.org.ukOpen ↗
===========================================================

Dave Larrington said:

Alo they're on the babbage-box bakc at Larrington
Towers while I, for my sins, am still toiling in the
Nut Mines. Bah!

Have you read Gibson & Sterling's "The Difference Engine?"

--
Guy
===
May contain traces of irony. Contents liable to settle after
posting. chapmancentral.co.ukchapmancentral.co.ukOpen ↗

Victory is ours! Down with Eric the Half A Brain!

Quoted post said:

Originally posted by Visionset
I have a 52/39 12/23 9 speed setup on my road bike.

I think I need to change the 39 ring for a smaller one.

I think it is practised by shimano et al to copy pro set
ups. I'm not a pro ;-)

I've heard that 52/39 is too small a jump to properly
utilise 9 speed. I'd agree, it's all very nice having so
many options 90% of the time, but I'm quite happy to trade
that in to be happier for the 10% of the time!

what is a good guess for the size I need [1], or do I go
half way to the ratio I want and change the back block for a
12/25 next time?

Obviously this is going to be a compromise. I don't want to
end up with 2 ranges and no overlap.

[1] I know its almost an impossible question, but I haven't
ridden anything with low ratios before, I've just got
by. My hack is worse 52/42 14/24. As a guide I run out
of gears at about a 1 in 8 (I think).

--
Mike W

Forget about changing rings and all that nonsense. Instead swap the 12/23 for something like a 13/26 or even a 13/28. You should then be able to climb up walls. 9 speed is plenty for me..i refuse to go 10 speed with all the extra cost involved for a sprocket i'm never going to use.

Just zis Guy said:

Have you read Gibson & Sterling's "The Difference Engine?"

Yes. This fact, however, does not mean that I have a means
of getting two files from Larrington Towers to the Nut
Mines without going to the former and turning the Babbage-
box on :-)

--

Dave Larrington - legslarry.beerdrinkers.co.uklegslarry.beerdrinkers.co.ukOpen ↗
===========================================================
Editor - British Human Power Club Newsletter
bhpc.org.ukbhpc.org.ukOpen ↗
===========================================================

On 11/5/04 10:36 am, in article [email hidden], "Just zis Guy,

you know? said:

Dave Larrington said:

Alo they're on the babbage-box bakc at Larrington
Towers while I, for my sins, am still toiling in the
Nut Mines. Bah!

Have you read Gibson & Sterling's "The Difference Engine?"

I have just finished it. It was most disappointing.
Particularly annoying as well because the obvious historical
inaccuracies that had nothing to do with the plot jarred,
the writing was about as convincing as [censored] van dyke's
cockney accent and it was nowhere near as good as I had been
led to believe Gibson was as an author.

Hopefully his other books are better.

..d

David Martin said:

Quoted message said:

Have you read Gibson & Sterling's "The Difference
Engine?"

Quoted message said:

I have just finished it. It was most disappointing.
Particularly annoying as well because the obvious
historical inaccuracies that had nothing to do with the
plot jarred, the writing was about as convincing as [censored]
van dyke's cockney accent and it was nowhere near as good
as I had been led to believe Gibson was as an author.

I found it a perfectly acceptable yarn, but my standards are
probably low. I read on the train, and my idea of perfection
is a book of Asimov short stories with groan-making puns.

--
Guy
===
May contain traces of irony. Contents liable to settle after
posting. chapmancentral.co.ukchapmancentral.co.ukOpen ↗

Victory is ours! Down with Eric the Half A Brain!

you know? said:

"The Difference Engine?"

Wasn't that Babbage's first effort?

James

Mark South said:

Quoted message said:

I read on the train, and my idea of perfection is a book
of Asimov short stories with groan-making puns.

Complete: "A niche in time...."

<goes to hunt for book> ... can't find it. I came across
plenty of Foundation and Robot books but ...

Is is "...saves Stein"?

James

"Just zis Guy, you know?" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

David Martin said:

Quoted message said:

Have you read Gibson & Sterling's "The Difference
Engine?"

Quoted message said:

I have just finished it. It was most disappointing.
Particularly annoying as well because the obvious
historical inaccuracies that had nothing to do with the
plot jarred, the writing was about as convincing as [censored]
van dyke's cockney accent and it was nowhere near as
good as I had been led to believe Gibson was as an
author.

I found it a perfectly acceptable yarn, but my standards
are probably low.

Thing is, Gibson wrote a couple of [censored] books, then a couple
of fantastic ones, then slid downhill gently but quickly.

Quoted message said:

I read on the train, and my idea of perfection is a book
of Asimov short stories with groan-making puns.

Complete: "A niche in time...."
--
Mark South Citizen of the World, Denizen of the Net <<Tiens!
Ce poulet a une grenade!

Mark South said:

Complete: "A niche in time...."

And after that read Shah Guido G, a bit of a shaggy
dog story...

I think "Death of a Foy" is my favourite, though :-)

--
Guy
===
May contain traces of irony. Contents liable to settle after
posting. chapmancentral.co.ukchapmancentral.co.ukOpen ↗

Victory is ours! Down with Eric the Half A Brain!

you know? said:

Quoted message said:

Complete: "A niche in time...."

And after that read Shah Guido G, a bit of a shaggy
dog story...

I think "Death of a Foy" is my favourite, though :-)

Quite a few of Asimov's so called puns fail to impress me
overly. A point of law - in reverse, or whatever - is one
example. Of course, I cannot really recall either the story
of the punch line. Loint of paw?

I do enjoy his Foundation books (the first two) and also his
Robot novels; those involving Daneel and Giskard,
especially.

James

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

Quoted message said:

Mark South said:

Quoted message said:

I read on the train, and my idea of perfection is a
book of Asimov short stories with groan-making puns.

Complete: "A niche in time...."

<goes to hunt for book> ... can't find it. I came across
plenty of Foundation and Robot books but ...

Is is "...saves Stein"?

Yup. He claims the story was written backward from there. Or
something. But he's got nothing on Dennis Norden or Frank
Muir when it comes to that.

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

Quoted message said:

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

Quoted message said:

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

Quoted message said:

OTOH, if 30x32 isn't low enough then nothing is going
to help.

Hows about 22 x 32 or even 22 x 34, commonplace on mtbs

I'm pretty sure that we were talking road to start with.

Maybe, but is there some reason why an mtb type chainset
couldn't be fitted to a road bike?

Quoted message said:

On the road bike I ride that hill in the 50". I do go
faster and it's

more work

Quoted message said:

but the tyre and wind resistance differences seriously
affect the gearing choice.

I was joking but glad to hear my assertion borne out by
practical experience. I don't imagine wind resistance having
much effect at the low speeds associated with those kinds of
ratios but would think the tyres, boingy frame, extra weight
and psychology of climbing on tarmac with an mtb would have
quite an effect.
--
Regards, Pete

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

Quoted message said:

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

Quoted message said:

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

Quoted message said:

"Mark South" <[email hidden]> wrote in
message "]news:[email hidden]...
> OTOH, if 30x32 isn't low enough then nothing is
> going to help.

Hows about 22 x 32 or even 22 x 34, commonplace on
mtbs

I'm pretty sure that we were talking road to start with.

Maybe, but is there some reason why an mtb type chainset
couldn't be fitted to a road bike?

None that I know of. The BBs are the same, but you may need
a different front mech.

Quoted message said:

Quoted message said:

On the road bike I ride that hill in the 50". I do go
faster and it's

more work

Quoted message said:

but the tyre and wind resistance differences seriously
affect the gearing choice.

I was joking but glad to hear my assertion borne out by
practical experience.

It's anecdotal. Don't get me in trouble with the URC pedant
patrol who will o over me because I failed to eliminate the
effects of wind speed/direction, humidity, diet etc etc.

Quoted message said:

I don't imagine wind resistance having much effect at the
low speeds associated with those kinds of ratios but
would think the tyres, boingy frame, extra weight and
psychology of climbing on tarmac with an mtb would have
quite an effect.

The tyres are a big factor, even though I pumped them up to
65psi which is much harder than I run them offroad.

Wind resistance is significant at anything over about 10
mph. Not dominant perhaps, but significant.

My boingly frame is a URT which is set up *properly* and my
pedalling style is smooth and high cadence. I don't bounce
on either bike.

The extra weight is a pain, about 12 or 15 lbs.

The psychology is affected by the availability of much lower
gears so that one goes slower and slower, maintaining
cadence by shifting down. On the road bike one maintains
cadence by getting out of the saddle at times and
maintaining forward speed.

The somewhat diffent riding position seriously affects that
last choice.
--
Mark South Citizen of the World, Denizen of the Net <<Tiens!
Ce poulet a une grenade!

Peter B said:

is there some reason why an mtb type chainset couldn't be
fitted to a road bike?

<fabrizzio>Yes! You would look like a fred!</fabrizzio>

--
Guy
===
May contain traces of irony. Contents liable to settle after
posting. chapmancentral.co.ukchapmancentral.co.ukOpen ↗

Victory is ours! Down with Eric the Half A Brain!