Search found 3059 matches

by Samuel D
22 Jun 2020, 1:25pm
Forum: Bikes & Bits – Technical section
Topic: "These headsets last forever"?
Replies: 84
Views: 2503

Re: "These headsets last forever"?

I regard threadless headsets as one of the least troublesome components on a bike. I’m sure plenty of them are (expensive cartridge models, mudguards, good-weather riding anyway, five bikes to spread the load, knowledgeable set-up?). But my observations of riding companions’ bikes tell me it’s also...
by Samuel D
22 Jun 2020, 1:10pm
Forum: Bikes & Bits – Technical section
Topic: Pedal Problem
Replies: 30
Views: 1254

Re: Pedal Problem

Shimano’s instructions for installing pedals confirm the grease (page 13): https://si.shimano.com/pdfs/dm/DM-PD0002-07-ENG.pdf I agree there doesn’t seem to be much grease in the photos, but when plenty is applied, most is displaced anyway – especially if the pedal is moving radially because it’s no...
by Samuel D
22 Jun 2020, 9:15am
Forum: Bikes & Bits – Technical section
Topic: Pedal Problem
Replies: 30
Views: 1254

Re: Pedal Problem

Pictures from my brother: https://imagizer.imageshack.com/img924/8695/b1fgn6.jpg https://imagizer.imageshack.com/img923/9386/yGMebP.jpg https://imagizer.imageshack.com/img924/3412/ruly6g.jpg https://imagizer.imageshack.com/img922/4813/H3LPBA.jpg As I mentioned: new bike, new cyclist, he installed th...
by Samuel D
22 Jun 2020, 2:01am
Forum: Bikes & Bits – Technical section
Topic: "These headsets last forever"?
Replies: 84
Views: 2503

Re: "These headsets last forever"?

A swing in length of 0.2 mm is equivalent to a 72° turn of the M6x1 preload bolt. That’s huge.
by Samuel D
21 Jun 2020, 8:45pm
Forum: Bikes & Bits – Technical section
Topic: "These headsets last forever"?
Replies: 84
Views: 2503

Re: "These headsets last forever"?

I believe ~5 Nm on the cap bolt would get rid of movement in mine too, but wouldn’t that run into the other problem? I thought the Campagnolo Record would solve all the problems I’ve had with cheaper headsets, but seems not. On the other hand, the steering is still smooth, so what’s the problem real...
by Samuel D
21 Jun 2020, 8:31pm
Forum: Bikes & Bits – Technical section
Topic: Spoke Tension Meters
Replies: 54
Views: 1525

Re: Spoke Tension Meters

The park tool I have had stiff spots on its travel across the dial, these need to be eliminated for more consistent results. Yesterday I checked the first wheels a friend had built using the Park Tool TM-1 for tension (Open Pro C rims with 2 mm plain-gauge spokes). The wheels were great for a first...
by Samuel D
21 Jun 2020, 7:41pm
Forum: Bikes & Bits – Technical section
Topic: MTB bottom bracket and chainset problem
Replies: 5
Views: 199

Re: MTB bottom bracket and chainset problem

You can scroll down to Shimano’s official recommendation for the FC-TY501-2 and FC-TY501 (I don’t know which one you have) in the specifications here: https://productinfo.shimano.com/#/spec/MTB/Crankset It’s LL123, D-NL (I think that’s 122.5 mm), or D-EL (for a 50 mm chainline; I think that’s 127 mm...
by Samuel D
21 Jun 2020, 7:29pm
Forum: Bikes & Bits – Technical section
Topic: "These headsets last forever"?
Replies: 84
Views: 2503

Re: "These headsets last forever"?

One of the problems with the threadless headsets I’ve used is that there appears to be no perfect preload adjustment. If you back off the preload to nearly nothing, the upper cup and cone go visibly out of concentricity under hard braking (maybe the lower one does too, but it’s harder to see). The s...
by Samuel D
21 Jun 2020, 6:41pm
Forum: Bikes & Bits – Technical section
Topic: Spoke Tension Meters
Replies: 54
Views: 1525

Re: Spoke Tension Meters

https://lh3.googleusercontent.com/3YMv86_rsaQfYkTDLF5SiwoVXfzyy7nuIf5AIAtB0jJmdiBVttN-gOtoKZzwVZOFvhc_iPY3ocHuwlqnsJAxAd8co38E0F1Apd8OVWKm9UeHs1eqZ5YReH5XHgboBE3RTQGlaf0RRVI98w9E_gmAn33aert1VHCLhxk6UflBKtA9LTR66v-gmC9v_iIco7_xMN2DF5Ur4tm4vqeF916Tl571DpcXS3EwYRcMs0rytjMLE4MWX5Lz5cxHc_Dg9eht1Ybyfe8b0...
by Samuel D
21 Jun 2020, 2:02pm
Forum: Bikes & Bits – Technical section
Topic: Pedal Problem
Replies: 30
Views: 1254

Re: Pedal Problem

My brother bought a road bike in the lockdown and despite warnings from the bike shop and me about the importance of fitting the pedals with grease and tightly, had the left pedal fall out after wrecking the crank threads. He did not use a washer, none having been supplied. I didn’t think to suggest...
by Samuel D
21 Jun 2020, 12:19pm
Forum: Bikes & Bits – Technical section
Topic: Shimano R8000 FD compatible with 5800?
Replies: 11
Views: 334

Re: Shimano R8000 FD compatible with 5800?

Sometimes the bottom bracket cable guide has a bit of wiggle room that can be used to improve the entry angle of the cable to the derailleur, too. Doesn’t apply to frames with internal routing.
by Samuel D
21 Jun 2020, 11:47am
Forum: Bikes & Bits – Technical section
Topic: Pedal Problem
Replies: 30
Views: 1254

Re: Pedal Problem

I had wondered if the stoker wasn't pushing hard enough and so the pedals were seeing a reverse precession load. Very good. Pedal threads should be greased and screwed in tight. Tighter than many people think. Shimano specifies 35–55 Nm for most (all?) pedals, for example. I see no reason not to ai...
by Samuel D
20 Jun 2020, 9:46pm
Forum: Bikes & Bits – Technical section
Topic: Shimano R8000 FD compatible with 5800?
Replies: 11
Views: 334

Re: Shimano R8000 FD compatible with 5800?

ElCani wrote:Can anyone tell me what was wrong with the pre long-arm designs?

Pass.
by Samuel D
20 Jun 2020, 7:09pm
Forum: Does anyone know … ?
Topic: Bike in back of car
Replies: 21
Views: 846

Re: Bike in back of car

We had a Fiat500 for a few years as a second car and Mercian just needed one wheel out but the seats dropped.$matches[2]Mercian500-1.jpeg Had? Did you get rid of it for any particular reason? I’m just curious because we were half-thinking about getting a Fiat 500 (the new ultra-mild hybrid model) a...
by Samuel D
20 Jun 2020, 7:00pm
Forum: Bikes & Bits – Technical section
Topic: Shimano R8000 FD compatible with 5800?
Replies: 11
Views: 334

Re: Shimano R8000 FD compatible with 5800?

I haven’t measured them, but I’ve noticed the cage on the new toggle-link derailleurs appears to be both wider and to have a shorter tail. That should indeed provide more flexibility with chain angle before rub happens. That said, the trim works better on Shimano systems if you meticulously follow t...