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by Samuel D
13 Jun 2020, 11:53am
Forum: Bikes & Bits – Technical section
Topic: I’m famous! Or at least my Spa Audax is …
Replies: 87
Views: 3614

Re: I’m famous! Or at least my Spa Audax is …

Aw-shucks. Glad it’s appreciated. As reohn2 notes, the SL-R400 is the only 8-speed down-tube shifter Shimano still makes. I would also have preferred a model with a friction option. That said, these are reliable and long-lasting. Mine have changed a lot of gears – you can see my stray fingers have w...
by Samuel D
13 Jun 2020, 1:07am
Forum: Bikes & Bits – Technical section
Topic: I’m famous! Or at least my Spa Audax is …
Replies: 87
Views: 3614

Re: I’m famous! Or at least my Spa Audax is …

Does the groove in the rim produce a ridge on the brake block? Yes, but the ridge fades toward the front, showing, I think, that the long arms of the brake are bending forward as the rim tries to pull the pads around with it, and that bending lifts the front of the pads far enough to pop the ridge ...
by Samuel D
13 Jun 2020, 12:22am
Forum: Bikes & Bits – Technical section
Topic: I’m famous! Or at least my Spa Audax is …
Replies: 87
Views: 3614

Re: I’m famous! Or at least my Spa Audax is …

PS,did you fit the 35mm tyres with mudguards? No, and I didn’t like the clearance even without mudguards (though plenty of people I know ride worse, with the trend to fatter tyres on road bikes. I’ve seen literally 1 mm clearances a few times here in Paris). The bike would take 33 mm tyres with rea...
by Samuel D
12 Jun 2020, 11:44pm
Forum: Bikes & Bits – Technical section
Topic: I’m famous! Or at least my Spa Audax is …
Replies: 87
Views: 3614

Re: I’m famous! Or at least my Spa Audax is …

Are you doing autographs yet? It’s all posing for selfies with the riff-raff nowadays. Your bike is very individual, it seems like a lot of thought has gone into making it simple. It's not my sort of bike, but I like it. Thanks. Simple was the idea, yes – but not ultimately simple or I wouldn’t hav...
by Samuel D
12 Jun 2020, 10:16pm
Forum: Bikes & Bits – Technical section
Topic: I’m famous! Or at least my Spa Audax is …
Replies: 87
Views: 3614

Re: I’m famous! Or at least my Spa Audax is …

What rims btw??? That bit wasn’t exactly planned, but I wrecked a couple of rims and ended up with an Open Pro C at the rear and Open Elite at the front. It works although I don’t like the wear-indicating groove in the Open Elite. Seems to interfere with the flexy Campagnolo brake arms, causing som...
by Samuel D
12 Jun 2020, 9:36pm
Forum: Bikes & Bits – Technical section
Topic: I’m famous! Or at least my Spa Audax is …
Replies: 87
Views: 3614

I’m famous! Or at least my Spa Audax is …

How cool is this?

They even threw in a link to the Spa Cycles Audax frame in the text, not that many Americans are likely to order it. Course they get readers from all over.

Fun.
by Samuel D
12 Jun 2020, 8:59pm
Forum: Does anyone know … ?
Topic: Does 3cm make a difference for frame size?
Replies: 31
Views: 1322

Re: Does 3cm make a difference for frame size?

Notable bicycle designer Gérard Vroomen believes that even the pros would be better served by increasing their handlebar height (i.e. riding a larger frame). I agree with that. That's interesting, given that wind resistance at speeds above, what is it, 12mph or so is the main form of resistance fac...
by Samuel D
12 Jun 2020, 8:50am
Forum: Does anyone know … ?
Topic: Does 3cm make a difference for frame size?
Replies: 31
Views: 1322

Re: Does 3cm make a difference for frame size?

I want a more upright position I didn’t see this thread at the time, but a more upright position is precisely what a larger frame gives you. Saddle height and reach can usually be adjusted to suit across a range of frame sizes – indeed the difference in reach is often surprisingly little – but the ...
by Samuel D
10 Jun 2020, 4:53pm
Forum: Bikes & Bits – Technical section
Topic: Witcomb?
Replies: 24
Views: 1126

Re: Witcomb?

Brucey wrote:So to my surprise I am feeling childishly enthusiastic about building this up and riding it, even if I throw it together with parts that are somewhat mismatched in the first instance.

Do you plan to repaint it?
by Samuel D
10 Jun 2020, 4:48pm
Forum: Bikes & Bits – Technical section
Topic: Deformed inner tube, is it supposed to look like this?
Replies: 3
Views: 247

Re: Deformed inner tube, is it supposed to look like this?

It’s normal if you over-inflate it outside a tyre. It’s not normal to do that.
by Samuel D
10 Jun 2020, 4:48am
Forum: Bikes & Bits – Technical section
Topic: Derailleur trauma
Replies: 12
Views: 425

Re: Derailleur trauma

However, the cause of your trouble is not likely the long cage. Some answers to your numbered questions: 1. Probably not. Yes: it takes up the excess chain when using the smallest/innermost ring. 2. Probably. I suggest reversion of this rash decision. 3. Probably, but best confirm freewheel/cassette...
by Samuel D
10 Jun 2020, 4:19am
Forum: Bikes & Bits – Technical section
Topic: hexagonal allen keys
Replies: 9
Views: 563

Re: hexagonal allen keys

I have come across 7 mm sizes on French stems and seatpost clamps too, thankfully rarely. The reason they are not included in sets is first of all that they are seldom needed, of course, but secondly that 7 mm is a so-called second-choice size. First-choice sizes (e.g. 5, 6, 8, 10 mm …) differ from ...
by Samuel D
7 Jun 2020, 8:36pm
Forum: Bikes & Bits – Technical section
Topic: Really annoying sound
Replies: 44
Views: 1094

Re: Really annoying sound

rohitmail90 wrote:Nope not at all.

Small swings of the left shift levers as indicated in the “Trimming (noise prevention mechanism) operation” section on the second page of this PDF:

https://si.shimano.com/pdfs/um/UM-07X0A-004-ENG.pdf
by Samuel D
7 Jun 2020, 8:27pm
Forum: Bikes & Bits – Technical section
Topic: Really annoying sound
Replies: 44
Views: 1094

Re: Really annoying sound

The photos aren’t very useful. We’re trying to see whether the outer plate of the front derailleur cage is parallel to the plane of the chainring, and whether the two pulley wheels of the rear derailleur are vertically aligned, one directly on top of the other. The cage should be approximately align...
by Samuel D
5 Jun 2020, 10:12am
Forum: Bikes & Bits – Technical section
Topic: Moulton TSR rear pivot
Replies: 387
Views: 18805

Re: Moulton TSR rear pivot

The lathe that caught my eye was a Machine Mart Clarks one. https://www.machinemart.co.uk/p/cl300m-metal-lathe/ I'm sure I'd use it from time-to-time for various stuff, but it would be a toy really, and an expensive toy at that. There are other products you could make and sell to the bicycle commun...