Going off road on a road bike?

Trips, adventures, bikes, equipment, etc.
slowster
Posts: 474
Joined: 7 Jul 2017, 10:37am

Re: Going off road on a road bike?

Postby slowster » 25 Jan 2019, 6:56pm

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.

peetee
Posts: 1034
Joined: 4 May 2010, 10:20pm

Re: Going off road on a road bike?

Postby peetee » 25 Jan 2019, 10:59pm

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.
Current status report:
Latter side of fifty and feeling less than nifty.
Too many bikes on pegs and too few miles in the legs.

MikeF
Posts: 3636
Joined: 11 Nov 2012, 9:24am
Location: On the borders of the four South East Counties

Re: Going off road on a road bike?

Postby MikeF » 8 Feb 2019, 2:20pm

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?
"It takes a genius to spot the obvious" - my old physics master

colin54
Posts: 982
Joined: 24 Sep 2013, 4:34pm

Re: Going off road on a road bike?

Postby colin54 » 10 Feb 2019, 12:01pm

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.
Last edited by colin54 on 11 Feb 2019, 10:54pm, edited 1 time in total.

drossall
Posts: 4328
Joined: 5 Jan 2007, 10:01pm
Location: North Hertfordshire

Re: Going off road on a road bike?

Postby drossall » 10 Feb 2019, 2:49pm

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>

colin54
Posts: 982
Joined: 24 Sep 2013, 4:34pm

Re: Going off road on a road bike?

Postby colin54 » 10 Feb 2019, 6:28pm

Glad you liked it.

Bmblbzzz
Posts: 2219
Joined: 18 May 2012, 7:56pm
Location: From here to there.

Re: Going off road on a road bike?

Postby Bmblbzzz » 15 Feb 2019, 5:58pm

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.

drossall
Posts: 4328
Joined: 5 Jan 2007, 10:01pm
Location: North Hertfordshire

Re: Going off road on a road bike?

Postby drossall » 15 Feb 2019, 9:52pm

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.

peetee
Posts: 1034
Joined: 4 May 2010, 10:20pm

Re: Going off road on a road bike?

Postby peetee » 16 Feb 2019, 8:40am

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.
Current status report:
Latter side of fifty and feeling less than nifty.
Too many bikes on pegs and too few miles in the legs.

Bmblbzzz
Posts: 2219
Joined: 18 May 2012, 7:56pm
Location: From here to there.

Re: Going off road on a road bike?

Postby Bmblbzzz » 16 Feb 2019, 12:38pm

:thumbsup: