Showing posts with label Schwalbe. Show all posts
Showing posts with label Schwalbe. Show all posts

Wednesday, 26 March 2025

The Tank™ is on a diet

As mentioned last time, I'm trying to breathe a bit of life into The Tank™, a 30yr-old steel mountain bike that has been through the mill but is seemingly indestructible.

Part of that resuscitation involves putting the whole thing on a diet, and I was quite pleased to have shaved nearly half a kilogram off last time. But why stop there? As it happens, the old girl needed new tyres, the old pair having clocked very nearly 4,000 puncture-free miles.

So my starting point was a 26 x 1.9" Schwalbe Land Cruiser on the front and a 26 x 2.0" Land Cruiser Plus on the rear. Don't ask why they were different widths - that's what happens when a bike shop only has certain tyres in stock. Anyway, they came off and a last-gen pair of new Land Cruisers went on, but narrower: 26 x 1.75". And I was amazed at the weight saving. My admittedly increasingly inaccurate luggage scale reckoned the old front tyre was 700g but its replacement was 350g. And an even bigger reduction came from changing the rear.

The upshot of all this is that The Tank™ now tips the scales at something like 13.25kg, more than a kilo lighter than it was this time last month. And because the tyres were last-gen, i.e. last year's model, they were only £11 each. So my secondary aim of rejuvenating the old girl on the cheap holds up too.

13.25kg

Wondering what I can do next? The seatpost is an obvious candidate but being an old-school MTB it's a funny size: 25.4mm. Don't find too many carbon posts that size. I might have to result to more rudimentary changes, as in pulling the post out and seeing if there's scope for cutting it down a bit. Now, where's my hacksaw...?

Monday, 10 March 2025

Life in the old dog yet?

You may have seen me refer to The Tank™ on here before. Well, here it is:

The Tank™
The only thing older and more clapped out than this bike is its rider.

For clarity, this is a Saracen Rufftrax that I bought new from Halfords in Folkestone, Kent, all the way back in 1995, for the princely sum (then) of £199.99 - as you can see, it is not all original (that's a padded but very comfortable Wittkop saddle from middle-Lidl, of all places, and Giant bar-ends, for starters) but is, for the most part, the same bike I did the 1996 London to Brighton bike ride on, incredibly.

It was starting to feel very tired though. Last October, I had to bite the bullet and find some new shifters, because I just couldn't change gear any more. I managed to find an as-new compatible Shimano set, still boxed, from an Ebayer in the US who bought them for his kids' MTBs years ago, never used them and then rediscovered them at the back of his garage. Result. They went on and suddenly I could change gear again. I put a new rear mech on at the same time.

I also upgraded the brakes, which felt like a more significant change because it meant a move away from period correctness - I swapped out the old cantilever brakes and fitted V brakes instead. I can stop a bit better now (though the gain is marginal).

I've been using The Tank™ all through the winter for commuting, which is why it's in the state it was at the weekend, propped up against the table tennis table in the back garden. But having spent time and money keeping it usable, money that could easily have bought something half-decent (and modern) on the used market, I suddenly realised that I have committed to keeping the old beast on the road. And that, having made concessions to modernisation with the change of brakes, the shackles were off in terms of other modifications.

Let's be clear, although it's technically a mountain bike, most of the time it's on the road, just in bad weather. So the fact that it weighs a tonne is an issue. Okay, not a tonne ... but I picked it up with a fairly accurate luggage scale on Saturday and it clocked 14.5kg. That's a lot, and needs to change. However, I also don't want to spend a lot on the bike. It doesn't owe me anything, but I have other bikes that I'd rather spend money improving. So, my goal is to see if there's life in the old bike yet, but do so without spending too much... and this is how I started at the weekend:

OFF: Wittkop Medicus MTB saddle - 430g
ON: Giant Performance Road saddle No cost (had it spare in the garage) 340g
OFF: Saracen OEM alloy handlebar - 416g
ON: USE Atom carbon handlebar £44.49 on Ebay 135g
OFF: Giant Contact SL bar-ends - 158g
ON: Houson R15 bar-ends No cost (freebie) 64g
OFF: A leftover bolt from the old cantilever brakes - 5g
Total weight saving: 460g

In other words, I battered the weight-saving rule of 1g/£, by a factor of 10! Hanging it back on the luggage scale returned a figure of 14.1kg though, so there's still work to do...

As luck would have it, The Tank™ needs new tyres. Because it is mostly used on the road, for commuting in inclement weather, I plan to downsize from 26 x 2.00 to 26 x 1.75. I'll be sticking with Schwalbe Land Cruiser Plus though, as they've served me brilliantly. The tyres have been ordered, I'll post here again when they've arrived and I've put them on. Maybe there'll be an "after" photo too, to go with the "before" above. I also plan to save a few cheap grammes with a new bottle cage. Whoop-de-doo, right?

Friday, 18 October 2024

Like a bear ...

... I'm putting on weight for the winter ...

... because I had a puncture cycling home from work last week, and I'm sick of them. So, although the foldable Continental Gatorskins my trusty flat-bar was shod with looked like they had a bit of life left in them (Strava tells me they'd done over 2,800 miles, mind), off they came, and on (with a hell of a struggle, a broken tyre lever and a broken Tyre Glider) went a pair of wired Schwalbe Marathon Plus.

Bottom line, I have a heavier but sturdier pair of tyres on now, roughly 50g heavier per wheel. They are grippy though, and feel sturdy. Plus they have the "Smartguard" reflective band on the tyre wall which, on my winter commuter, can only be a good thing.

The eagle-eyed amongst you (you? No-one reads this...) will have spotted the green dustcaps in the picture above. For yes, such was my ire at last week's puncture, I also fitted some Slime road inner tubes, These are much heavier than the Schwalbe Extra Light they replaced, adding about 110g per wheel. On the plus side, they felt quite comfy on this morning's commute which was a relief, as I had worried they'd be less pliant.

So after all those years of shaving every possible gram off the trusty flat-bar, I have just willingly added about 320g - more than seven KitKats! Impact? Well, I felt slower this morning, and it felt like harder work too. However, Strava suggests it has had no great impact on my average speed or top speed, so maybe it was just one of those mornings when it feels like hard work. Not getting any younger, slimmer or fitter, after all...

P.S. I tweeted (or Xed, or whatever) Tyre Glider about the breakage and they sent me a replacement, FOC, in the post. Good customer service, I would say.

Monday, 6 June 2022

Worth the weight?

I wrote last time about changing the project bike's wheelset, specifically swapping out the stock 2016 Giant SR-2 alloy clinchers with a pair of Mavic Aksium Elite hoops that I'd sourced secondhand.

Well, I haven't done the back wheel yet, as I'm waiting for a new lockring tool to be delivered, but the results are in for the front wheel. And they are, truth be told, a little underwhelming.

The weight of the front Aksium Elite, bare except for rim-tape and skewer, registered as 882g on the Kitchen Scales of InaccuracyTM. The Giant SR-2 front wheel, in the same bare state, clocked in at 910g. So a weight saving, sure ... but 28g isn't much. I must admit to feeling a little disappointed. Part of the reason for this is that Giant make it very hard to find weight information for anything they sell, whether that's a stem, a wheelset or a whole bike, to the extent that you're reliant on reviews to find any weight data. Unsurprisingly, I hadn't been able to find any reviews of a six year old wheelset, just this comment on Reddit that gave the weight of the front wheel as 930g.

Anyway, it's not all bad news. Since I had the wheel off and the scales out, I weighed both skewers separately too. The Mavic skewer showed as 60g, the Giant at 56g. So the Giant skewer went on with the Mavic wheel. Another 4g saved.

I also took the opportunity to fit a light weight inner tube whilst I was at it, specifically a Schwalbe Extra Light. My size of choice is the 18c-25c with 50mm Presta valve, so I can tell you that size weighs in at 76g. As for the Vavert that came out of the tyre, well, it's quite hard to fit a deflated, user tube on some kitchen scales ... the only reading I managed to get was 125g. I'm not convinced that's right but, if it was, I made more of a weight saving changing an inner tube than I did replacing a wheel...

Oh, and since prospective Giant owners have to rely on bloggers and reviewers for weight data, let me reiterate the following:

A 2016 Giant SR-2 front wheel, bare except from rim-tape and skewer, weighs 910g.

The skewer that comes with a 2016 Giant SR-2 front wheel weighs 56g.

It's unlikely, but I hope that helps someone.

Thursday, 13 February 2020

Some new bits

A flavour of some new bits for old faithful...


Hutchinson Fusion 5 Kevlar Pro Tech
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