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91
Thorn General / Re: Thorn heat treated tubing
« Last post by PH on May 09, 2019, 02:25:48 PM »

If the implication of posts up the thread is that at least some Thorn brand tubes are relabelled Reynolds,
I don't think that's the case, or see where you draw that implication from.  I've never seen anything that indicates Reynolds make for anyone else, though I know the opposite is true - that some Reynolds branded tubes are made under license by other manufacturers.
92
Non-Thorn Related / Re: Rides 2019 +++ Add yours here +++
« Last post by John Saxby on May 09, 2019, 01:46:06 PM »
You're right about black ice, Andre. Here, it is the danger for winter cycling, maybe even more so than the narrowed roads, motorists not looking for cyclists and the shorter days. A cyclists can manage those factors, but with black ice, it's so easy to lose all traction unless you have studded tires.

I know people who cycle year-round, but I long ago decided to give my two-wheeled life a rest for the 3-4 months between December & March.  I make an exception in those years when we don't have snow until January--it can happen, though it's uncommon.

On the latitude thing:  our winters, and those of Montréal, are the product of a continental climate.  We're far from the moderating influence of an ice-free ocean. Even Toronto has a much milder climate, because the influence of Lake Ontario. Our daughter cycles year-round in TO.

I'm always reminded of how much further north you are when I visit northern Europe.  When our daughter moved to Berlin in 2010, I warned her about the emotional effects of losing the sun in January.  She loved the long summer evenings, but was shocked by how much missed the sun in January -- she'd become accustomed to our cold clear sunny days in January and onwards.
93
Thorn General / Re: Kickstand on a Nomad or a Raven anyone?
« Last post by Dave Whittle Thorn Workshop on May 09, 2019, 01:42:04 PM »
Quote
I have tapped the bolt holes from 5mm to 6mm in the rear dropouts on my Rohloff expR.
Would this kickstand adapter cope with 6mm bolts and possibly need some work to get them in?
Julian.

You would have to drill the two fixing holes out, the one top left in the picture might be a bit close to the edge... worth a shot though.

94
Thorn General / Re: Kickstand on a Nomad or a Raven anyone?
« Last post by julk on May 09, 2019, 12:51:17 PM »
Dave,
not promising to buy one, but
I have tapped the bolt holes from 5mm to 6mm in the rear dropouts on my Rohloff expR.
Would this kickstand adapter cope with 6mm bolts and possibly need some work to get them in?
Julian.
95
Wanted / Re: Thorn Comfort bars
« Last post by julk on May 09, 2019, 12:40:08 PM »
julio,
I replace mine every 4 or 5 years.
You can have mine in a month or so if you want them (they are just over 4 years old and in good condition).
Bars for free, carriage for the cost.
What is the best/cheapest way to send them to France for you from the UK?

The reason I change them is some years ago my GB alloy handlebars broke whilst riding.
I was lucky that time and only broke a rib on landing, also went sideways out of the commuting traffic stream.
I am now use Thorn Comfort Bars and change them every 4 or 5 years to avoid any chance at all of a breakage.
The ones that broke had been creaking - I did not know at that time that the creaking could be caused by a crystalline fracture of the bars.
Julian.

96
Thorn General / Kickstand on a Nomad or a Raven anyone?
« Last post by Dave Whittle Thorn Workshop on May 09, 2019, 11:50:05 AM »
See the link below, this part will work on any Thorn Nomad or Raven with the Thorn Rohloff dropouts.  It only works with a KS18 ESGE stand.

https://www.sjscycles.co.uk/gear-spares/thorn-dropout-adaptor-with-kickstand-mount-18-mm/

This WONT void your Thorn frame warranty, many of our reservations still apply, you could break this adaptor or the stand if overloaded, but importantly this wont damage the bike frames integrity in any way!

Adaptor is £39.99, stand £14.99.  If you call me 01278 441505 as a limited offer until 31/05/19 you can have free UK mainland postage.

See we do listen, its just these things take time to come up with workable solutions, prototype, testing, and final production! 



[Topic made sticky for reference. - Dan.]
97
Thorn General / Re: Thorn heat treated tubing
« Last post by Prince of Darkness on May 09, 2019, 11:29:00 AM »
The only thing about Andy Blance's designs I didn't (and don't) like was that the tubes are welded together
I don't think any of the Andy Blance designs which were made in Britain were welded. Most were fillet brazed, with a few lugged. Welded Thorn frames started appearing when they started getting them made in Taiwan ;) I really like my welded RST, but always felt that my fillet brazed XTC was a bit special :)
98
Non-Thorn Related / Re: Rides 2019 +++ Add yours here +++
« Last post by Andre Jute on May 09, 2019, 10:30:41 AM »
Quote
On the temperature thing, an interesting fact: Montréal and Ottawa are approximately on the same latitude as Marseilles.

Good heavens, you're right. And that's not all. I live substantially to the north of you, but it is very rare for us to have ice on the ground because the odd few drops of snow that fall two or perhaps three times in an average winter soon melt away. From a cyclist's viewpoint black ice on narrow lanes between hedges that keep the low sun off the tarmac is more dangerous, and some places ground water that persistently breaks through the tarmac and, again between hedges, can form long streaks of black ice on the roads even when the nominal ambient temperature is in the high single digits. I was caught on one such once, and was glad I was riding my Kranich, which I bought specifically for its low stepover, and boy, did I put it to good use that day, because I simply put my feet on the black ice either side of the frame and with four-point stability slid elegantly (that's my story and I'm sticking to it) back down the hill. Ten years on, despite the Council repeatedly remaking that piece of road, the groundwater still breaks through there.
99
Bikes For Sale / Re: Thorn Mercury 520L, for SALE
« Last post by in4 on May 09, 2019, 08:23:46 AM »
The link worked fine for me using a Samsung/Android tablet.
Gorgeous bike. The gunmetal frame and  red hubs go so we'll together. Too small for me, sadly, but someone will have a lovely summer on their winged messenger.
100
Non-Thorn Related / Re: Rides 2019 +++ Add yours here +++
« Last post by John Saxby on May 09, 2019, 02:58:03 AM »
Quote
swollen by what I assume is a big melt upriver

Yes, it's exactly that, Andre.  The snows came in late October this winter, and stayed.  There were occasional weird spikes in the temp--up to +9° in late Jan/early Feb on a couple of occasions, if you can imagine.  Those temps produced huge puddles, 20 ft across and more, which in turn would freeze as the temps dropped 25° overnight.  In April Ottawa received about 160 mm of rain--not much by tropical standards, but more than in any April on record. This arrived as the snow melted upstream, and contributed to the runoff. (interestingly, the problem was more severe in the watersheds upstream from Ottawa--downstream, the snowpack--hence melt--was smaller this year.  But, the bigger tributaries are upstream, and some of those were higher than ever recorded.)

The other thing that has happened is more subtle:  over the past 2-3 generations, Canadians have been draining wetlands across the country, while also paving growing amounts of or urban and peri-urban land. The result is that rainfall and snowmelt become runoff, rather than being absorbed into the soil and giving the water table a boost.

I see these things on my rides around Eastern Ontario. The drainage of wetlands is especially obvious, the incremental expansion of tarmac maybe less so. The beaver is mounting a comeback, so that where there's a colony of the critters, wetlands reappear. Beavers tend to colonise land that's marginal for farming, but they nevertheless generate a lot of grumbling among rural residents who wake up to find that beavers have completed a dam overnight, and--voilà! a low-lying field is now a marsh. Easy for me to say, I guess, but all things considered, I'd opt for a marsh rather than a flood.

On the temperature thing, an interesting fact: Montréal and Ottawa are approximately on the same latitude as Marseilles.
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