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Re: Going off road on a road bike?

Posted: 25 Jan 2019, 6:56pm
by slowster
peetee wrote:Yes I understand steel weight is not variable I was just inferring that the greater strength of 725 in comparison to 531 does not translate into a lighter tubeset.

Indeed. If someone wants a lightweight frame/bike then the off the peg options now are mostly based on using titanium and/or carbon to reduce the frame weight, rather than using the lighter steel tubes.

Re: Going off road on a road bike?

Posted: 25 Jan 2019, 10:59pm
by peetee
Don't get me wrong. I wasn't expecting it to be a light frame, I just thought that a more sophisticated, contemporary tubeset burdened with extra braze one would be near to comparable to a 40 year old, benchmark, quality tubeset, not considerably heavier.

Re: Going off road on a road bike?

Posted: 8 Feb 2019, 2:20pm
by MikeF
maxglide wrote:I dislike taking my tourer unintentionally 'off road' on 32c tyres. I feel it's cruel & unusual punishment on the rims.
:? :? What happens to the rims?

Re: Going off road on a road bike?

Posted: 10 Feb 2019, 12:01pm
by colin54
drossall wrote:When I was a student, I went out on a run with the University's Cycling Club, and they suddenly headed over Ilkley Moor...


drossal, this picture should take you back, off the moor towards Ilkley.
P1020476.JPG


jashn (OP), If it's muddy, mudguards getting clogged (if fitted) to a road bike with tight guard clearances
and lack of grip on the slithery stuff with road tyres are the main drawbacks I should think.
Most bikes will take you most places with a bit of care (and possibly pushing).

You could always put an all round tyre like Schwalbe Marathon Greenguard on your Trek which would
speed you up on the road and are good enough for a bit of off-road.

I assume you don't want to own two bikes.

Re: Going off road on a road bike?

Posted: 10 Feb 2019, 2:49pm
by drossall
colin54 wrote:drossal, this picture should take you back, off the moor towards Ilkley.

Brilliant, thank you. It was just such a great area to ride in - one of the real benefits of studying at Leeds (and it helped that I was an exiled Yorkshireman anyway).

I'm still in touch with a friend from those days. He was never in the University Union CC, but he went off on geography field trips to the north of Scotland by on a 3-speed (of course, these days, when you need the ideal machine for the job, he'd never have made it :lol: :lol: although he did later upgrade to a Viscount 10-speed). We met up some years ago at a reunion of the Anglican-Methodist Society, and for old times' sake got up early and did a loop. I think we went out through Menston and down the Cow and Calf, then back via Askwith and Otley, changed since our day by the A660 bypass.

Some years after that, he hired a holiday cottage, and I was one of various friends and family each visiting for a day or two as time allowed, as we rediscovered such well-remembered places as Kettlewell and Hawes. Back on topic, that time I took my totally-suitable Mercian with triple rings. For the Ilkley ride, I took my remaining bike from student days, an Aende road machine. Not really suited to the terrain at all - the bike's fine, but the rider is getting a bit dilapidated for racing gears on 1:6 hills. But that was the bike I used on my last expedition as a student, joining the Ang-Meth Soc on a trip up to Marske, west of Richmond. I'd been racing that day in the Harrogate Festival of Cycling, and there I was on my unsuitably-geared bike, pushing one of the other riders up a 1:8 or something. We stayed overnight and rode back; I remember I had to dash off eventually, to get back just in time to meet my father, who was collecting me as I left student life for good.

</rambling memories>

Re: Going off road on a road bike?

Posted: 10 Feb 2019, 6:28pm
by colin54
Glad you liked it.

Re: Going off road on a road bike?

Posted: 15 Feb 2019, 5:58pm
by Bmblbzzz
On the point of all steels having the same weight; is that right? Surely they are different alloys so must have different specific densities according to the non-ferrous elements they do or don't contain (nickel, chrome, molybdenum, whatever). Whether these differences are noticeable on the scale of a bike frame is another matter.

Re: Going off road on a road bike?

Posted: 15 Feb 2019, 9:52pm
by drossall
I understand that, for practical purposes, there's no difference. It's the strength and therefore the amount of material you need, that varies. Heavy bikes are heavy because they're made of weak stuff and you need a lot of it.

Re: Going off road on a road bike?

Posted: 16 Feb 2019, 8:40am
by peetee
Bmblbzzz wrote:On the point of all steels having the same weight; is that right? Surely they are different alloys so must have different specific densities according to the non-ferrous elements they do or don't contain (nickel, chrome, molybdenum, whatever). Whether these differences are noticeable on the scale of a bike frame is another matter.


I very much doubt that they are noticeable. The variations in weight caused by dimensions and fixture differences from different frameset would far exceed that. I wouldn't be surprised if the elements mentioned formed such a low percentage of constituent material as to represent a difference in mass equivalent to a couple of strokes of a file or a splash of brass solder.

Re: Going off road on a road bike?

Posted: 16 Feb 2019, 12:38pm
by Bmblbzzz
:thumbsup: