Search found 2784 matches

by Samuel D
16 Sep 2019, 2:46pm
Forum: Cycling Goods & Services - Your Reviews
Topic: The Wheel Fanatyk Jobst Brandt design tensiometer (photos)
Replies: 25
Views: 4036

Re: The Wheel Fanatyk Jobst Brandt design tensiometer (photos)

No calibration for me. Maybe after a couple of decades of my light use, but even then I’d bet there’s not much in it. The tool has features to minimise the influence of friction. The spring shouldn’t change noticeably over time. So where would a real need for calibration arise? From that article: “I...
by Samuel D
16 Sep 2019, 10:40am
Forum: Bikes & Bits – Technical section
Topic: maximum rate of spin
Replies: 15
Views: 754

Re: maximum rate of spin

what's (watts?) with the big disparity in the 'power' column on the strava thing? The ones with a lightning bolt are measured values from a power meter. Obviously everyone was tucked at 100+ km/h, so not pedalling and therefore at zero power. The others are Strava’s estimates based on the terrain a...
by Samuel D
14 Sep 2019, 2:31pm
Forum: Cycling Goods & Services - Your Reviews
Topic: The Wheel Fanatyk Jobst Brandt design tensiometer (photos)
Replies: 25
Views: 4036

Re: The Wheel Fanatyk Jobst Brandt design tensiometer (photos)

The table I have states 100kgf is a deflection of 0.41mm for a 1.8mm spoke. So the spring in the Wheel Fanatyk model is a little weaker. If the spring is weak enough, the deflection becomes so low that the spoke’s bending stiffness does not need to be taken into account. Then you can ditch the diff...
by Samuel D
14 Sep 2019, 10:44am
Forum: Bikes & Bits – Technical section
Topic: maximum rate of spin
Replies: 15
Views: 754

Re: maximum rate of spin

I saw this and found interesting that Sergio Higuita understood the supreme importance of aerodynamics on this long, mostly shallow descent with a tailwind, while several of his chasers did not. Perhaps Jonathan Vaughters, a pilot who should know, has drilled this into all of his riders. The faster ...
by Samuel D
14 Sep 2019, 9:55am
Forum: Bikes & Bits – Technical section
Topic: Brompton-esque build; guess the weight
Replies: 15
Views: 661

Re: Brompton-esque build; guess the weight

Those tyres are porkers even in Brompton size. The saddle isn’t light either. Some of the titanium bits have no practical lightening effect (e.g. the derailleur bits). I’ll guess 9.8 kg.
by Samuel D
13 Sep 2019, 1:22pm
Forum: Bikes & Bits – Technical section
Topic: Towards Blissful shifting; what about older mechs?
Replies: 18
Views: 706

Re: Towards Blissful shifting; what about older mechs?

I've noticed that jockey/pulley wheels have become larger. Does this change make shifting better? Don’t know about that, but it increases the length of chain tied up in the pulleys on small sprockets, which then becomes available for a greater gear range. It also marginally reduces power loss to pu...
by Samuel D
13 Sep 2019, 1:16pm
Forum: Cycling Goods & Services - Your Reviews
Topic: The Wheel Fanatyk Jobst Brandt design tensiometer (photos)
Replies: 25
Views: 4036

Re: The Wheel Fanatyk Jobst Brandt design tensiometer (photos)

Thanks for the update and photos, Des49. My Wheel Fanatyk tensiometer came with a conversion chart saying a deflection of 0.35 mm on a 1.8 mm thick spoke equalled a tension of 97 kgf. In 2018 this chart was revised for reasons I forget, now saying 0.35 mm deflection equalled exactly 100 kgf (not a q...
by Samuel D
13 Sep 2019, 12:47pm
Forum: Bikes & Bits – Technical section
Topic: Towards Blissful shifting; what about older mechs?
Replies: 18
Views: 706

Re: Towards Blissful shifting; what about older mechs?

I'm hoping that we get 6s/7s/8s chains with 'bullseye' riveting, in fact. I think these will give even better shifting on 6/7/8s systems, even with vintage RDs. Aren’t Wippermann Connex 800-series chains (at least some of them) already like that? The pins still slightly overhang the plate though. O...
by Samuel D
9 Sep 2019, 10:51am
Forum: Bikes & Bits – Technical section
Topic: Views - this wheel trueing stand?
Replies: 73
Views: 2274

Re: Views - this wheel trueing stand?

If I were buying a wheel truing stand now, I would want/prefer one that could take most or all of the various modern hub widths and axle types. I think thru-axles will become increasingly common on road and touring bikes, and similarly more MTBs will use the 148mm/110mm 'Boost' standard. Even if yo...
by Samuel D
9 Sep 2019, 10:45am
Forum: Bikes & Bits – Technical section
Topic: Views - this wheel trueing stand?
Replies: 73
Views: 2274

Re: Views - this wheel trueing stand?

For me, the tensiometer is for absolute reference. You may not possess a known good wheel; if you do it may have different components that change the ring of the plucked spoke; and anyway, good tension for one wheel is not good tension for all wheels. What do you do when you want 120 kg and your ref...
by Samuel D
9 Sep 2019, 9:00am
Forum: Bikes & Bits – Technical section
Topic: Rim brake wear Velo Orange 'RAID' rims a visual illustration
Replies: 18
Views: 925

Re: Rim brake wear Velo Orange 'RAID' rims a visual illustration

Is it nostalgia or just a principled design ethos?

Deliquium’s bicycles are always a study in good taste because he sweats these little details, doesn’t compromise lightly, and, yes, throws a fair bit of money at his various neuroses. They inspire me to be more disciplined about component selection.
by Samuel D
9 Sep 2019, 8:17am
Forum: Bikes & Bits – Technical section
Topic: Views - this wheel trueing stand?
Replies: 73
Views: 2274

Re: Views - this wheel trueing stand?

I recommend the Wheel Fanatyk Jobst Brandt design tensiometer because it eliminates a couple of the main sources of error in these tools. Very expensive, though. The Park Tool TM-1 is widely used by hobbyists and pro builders alike, so it must be worth considering. I think Spa Cycles use it. I’d be ...
by Samuel D
9 Sep 2019, 7:31am
Forum: Bikes & Bits – Technical section
Topic: Views - this wheel trueing stand?
Replies: 73
Views: 2274

Re: Views - this wheel trueing stand?

Wondering if I should give wheels a first try this winter. Go for it! You won’t regret it. I think a tensiometer may be the most important single tool to have after a spoke key. You can build perfect wheels without a truing stand but not without knowing tension. Plucking spokes is the best way to c...
by Samuel D
9 Sep 2019, 7:03am
Forum: Bikes & Bits – Technical section
Topic: Spa Audax build photos
Replies: 94
Views: 7959

Re: Spa Audax build photos

Hi Samuel, how are you keeping? I’ve had better days but I’m alright, thanks. Have wounds on left hip and left elbow that are taking a while to sort themselves out, plus a sore rib. The rest is rapidly mending except for the shoulder. A piece of bone split off the top of the humerus. After various ...
by Samuel D
5 Sep 2019, 3:59pm
Forum: Bikes & Bits – Technical section
Topic: The late Douglas Adams on technology
Replies: 28
Views: 1313

Re: The late Douglas Adams on technology

I like mattheus’s additional class of stuff and often seek that out. It’s getting harder to find, though. When everyone is perpetually distracted by the full-time job of being a consumer, there isn’t much time to acquire discernment about technology or anything else. The result is consumerism of an ...