Showing posts with label tires. Show all posts
Showing posts with label tires. Show all posts

Wednesday, January 2, 2013

Once More with Feeling: the Return of the Winter Tire Dilemma

Snowy Streets, Cambridge MA
After last year's mild winter, this holiday season caught us off guard with a bountiful snowfall. My two ridable transport bikes at the moment are a Brompton and a 650B prototype mixte (more on that soon). The mixte sports 42mm Grand Bois Hetre tires, and so I thought it would be a great idea to ride it in the snow. After all, the Hetres ride so nicely over unpaved, uneven terrain. Crusty snow feels kind of similar. I took to the streets. 

Here I will pause to admit, that despite 3 previous winters of cycling behind my belt, I had never before ridden on roads that look quite like what's pictured here. There was never a need to, since our neighbourhood usually gets plowed and salted pretty thoroughly. Typically the streets look more like this - with snowbanks piled high on the sides, but the travel lanes mostly cleared. This time around, maybe on account of the holidays, they had not cleared the snow all that well. I got to experience the real deal. 

Snowy Streets, Cambridge MA
The snow on the roads created terrain of three distinct categories. There was the even, packed snow. Riding on it felt similar to riding on post-rain dirt roads, nicely packed and kind of softish. The Hetres handled well there. There was the crusted-over snow, uneven and slippery at times, though not outright icy. This too felt manageable. And then there were the occasional stretches of deeper, slushier snow. I expected it to feel similar to mud, but it was way more slidey and my front wheel kept fishtailing. Still, overall I thought that the tires did fine. There were only a few stretches where I felt uneasy, and I attributed that to a lack of confidence. 

So I got home and uploaded some pictures of my snow ride, planning to comment on how decently the Grand Bois Hetres handled. But promptly the pictures received feedback from others to the opposite effect, warning that these tires ride poorly in the snow. The fact that I happily rode them and felt they were fine strikes me as funny - in a concerning sort of way. Ideally, I'd like to be able to tell the difference between lack of traction and lack of confidence.

Snowy Streets, Cambridge MA
And so, once more the Winter Tire Dilemma is upon me. Naturally, everyone is suggesting studded tires. This is my 4th winter commuting by bike and I have yet to try them. Partly this is because they are expensive and I cannot seem to commit to a wheel size. I am riding 650B now, but in winters past I've ridden 26", 28" and 700C, and who knows what I'll be riding next winter. I am also convinced that getting studded tires and mounting them on my bike will activate the Umbrella Carrying Principle, ensuring that I will not need them. 

Finally, the very fact of having gotten through 3 winters without them makes me question whether I really need studs. Winters here aren't really that bad, and tires with some tread seem to do pretty well. The Schwalbe Marathon Plus are the husband's favourite for city slush and snowy paths alike, and they are even available for the Brompton's wheel size. The performance-oriented Continental Top Winter IIs also come highly recommended. Knobby mountain bike tires are another popular choice. One issue, as I understand it, is that no tire is equally good for both snow and ice. Studded tires help with ice, but not snow. Tires with heavy tread help with snow, but not ice. This winter, my commutes cover longer distances and more remote areas than previously, so a good winter tire is worth considering ...though with all the choices and factors involved, I suspect spring might come by the time I decide. 

Monday, July 23, 2012

Fixed Gear Mercian, Freed and Re-Tyred

Mercian with Freewheel, Altered Gearing and Grand Bois Cerfs
I've had a Mercian Vincitore since last Fall, riding it as a fixed gear fitted with 28mm Panaracer Pasela tires. Those tires are not known for their raciness, but honestly that suited me just fine, since my fixed gear riding style is best described as "pottering about." Still, eventually I got curious what this machine was capable of if fitted with faster road tires. I also wanted to feel what the bike was like to ride non-fixed. Now the Mercian sports 26mm Grand Bois Cerf tires and has temporarily been turned into a freewheel single speed.

Mercian Vincitore Lugwork
The bike rides better than ever. The tires have a lighter feel to them and the ride quality - which I didn't think needed improving at all - is nonetheless improved. I should note that right now I have an old cheap flip-flop hub wheelset installed and not the nice Phil Wood wheelset we originally built it up with. This does not seem to make any difference. The bike feels as if I am riding on narrow balloon tires, with the speed and maneuverability of a fast roadbike.

Mercian Track Ends
"Freeing" the drivetrain changed the feel of the bike in several ways. It made me more aware of how responsive it is to pedaling efforts. It made me want to alter my positioning - namely to move the saddle back a bit and lower the handlebars. It also made me wish the bike had gears! I didn't miss them at all in fixed gear mode, but now the bike seems to "want" them. It's probably just because I have never ridden a non-fixed single speed roadbike before. It will be interesting to experience it this way for a bit. After that I will change it back to fixed. 

Mercian with Freewheel, Altered Gearing and Grand Bois Cerfs
I will also be making some component changes in the coming year. The gearing has been lowered twice already and it's clear that it needs to be even lower to suit my pedaling style. The Campagnolo crankset makes that impossible, since the smallest available ring is 49t. I will replace the drivetrain with something that will afford a categorically lower gear. Also, now that the bike is no longer fixed, I realise that the (Veloce) brake calipers aren't just "a bit weak" as I thought before, but simply do not work here; I must have been compensating with my feet more than I realised. We will try replacing the brake pads, but I doubt that will make enough of a difference. A better solution seems to get a set of plain ol' Tektro medium reach calipers. The initial build was based on the parts that were available to me at the time more than anything, but I like to spin fast and I like brakes that work well, so the components will have to change.

Crankbrothers Candy 2, Mercian
I've enjoyed riding this bike tremendously over the past year and think it was the right choice for me for a fixed gear bike. I like the versatility and can see myself putting fenders and a rack on it in some distant future. In the nearer future, I am curious how a radically lowered gearing will affect my experience of the bike, in particular when I use it for recovery rides. I think it's the right way to go.