Search found 431 matches

by Roadster
8 Apr 2018, 1:35pm
Forum: Bikes & Bits – Technical section
Topic: Problem with internal cabling to hub gears
Replies: 41
Views: 5326

Re: Problem with internal cabling to hub gears

Thank you, but that still has more to do with cable installation than with cable adjustment, and I'm still left wondering why you couldn't just say that in the first place instead of willfully misrepresenting my question. Perhaps you'd also care to enlighten us as to why you sarcastically invited others to explain, on your behalf, the answer to a question which I hadn't actually asked of you.
by Roadster
7 Apr 2018, 3:21pm
Forum: Bikes & Bits – Technical section
Topic: Problem with internal cabling to hub gears
Replies: 41
Views: 5326

Re: Problem with internal cabling to hub gears

I have not asked you to explain how cable routing can interfere with the position of the CJ reaction arm - I didn't need to, because I already understood that from my own experience without your help. I actually asked you to explain what you meant by a cable stop being "in the wrong place", and it's unreasonable to expect someone else to do that for you.

In my earlier post, I said that moving the position of the axle in the dropouts should not alter the cable adjustment and you replied that in reality it does. You are confusing cable adjustment with cable installation which are two different matters. It's important to understand the difference between them when gear selection problems arise following re-tensioning of a drive chain or belt, because otherwise you can easily end up fiddling with the cable's adjustment when the real cause is disturbance to its installation.
by Roadster
6 Apr 2018, 3:43pm
Forum: Does anyone know … ?
Topic: Why toe-in brake pads?
Replies: 10
Views: 4587

Re: Why toe-in brake pads?

Up with squealing I have not, do not and will not put.
by Roadster
6 Apr 2018, 1:50am
Forum: Bikes & Bits – Technical section
Topic: Problem with internal cabling to hub gears
Replies: 41
Views: 5326

Re: Problem with internal cabling to hub gears

Brucey wrote:In theory it makes no difference if you move the wheel but in reality if the gear cable housing is not free to slide within its eyes or there is a cable stop in the wrong place then moving the rear wheel can result in a change in shifting precision/position, or one that is OK to start with but then moves eg when the handlebars turn fully and strain the gear cable differently.

But in reality those are cable routing and cable length problems, not cable adjustment problems. Neither of those is changed in John's case, but only the wheel position.
Similarly, nor is the placement of a cable stop changed. There are only two cable stops which affect the cable adjustment, one at the shifter and the other at the cassette joint, so how can either of those be "in the wrong place"?
by Roadster
5 Apr 2018, 12:51pm
Forum: Bikes & Bits – Technical section
Topic: Problem with internal cabling to hub gears
Replies: 41
Views: 5326

Re: Problem with internal cabling to hub gears

Altering the rear axle's position in the dropouts should make no difference to the gear cable adjustment. This is because the gear cable's housing is stopped at the cassette joint which is attached to and moves with the hub.
It's important to have a grasp of how the whole shifting system works before attempting maintenance, repairs or modifications, otherwise you can easily end up chasing problems around in circles.
by Roadster
1 Apr 2018, 1:35am
Forum: Bikes & Bits – Technical section
Topic: Alfine 8-speed ?clutch? problem in gears 2, 3, 4
Replies: 58
Views: 8053

Re: Alfine 8-speed ?clutch? problem in gears 2, 3, 4

Presumptions have no role to play in proper scientific method, which requires actual testing of the specific product before determining its suitability for the job.
Your concerns are unfounded: calcium greases have good compatibility with other types and exceed them in water resistance. The Morgan stuff is eminently suitable for the lubrication of bicycle cables, and especially so for service in extreme conditions.
by Roadster
30 Mar 2018, 3:41pm
Forum: Bikes & Bits – Technical section
Topic: Alfine 8-speed ?clutch? problem in gears 2, 3, 4
Replies: 58
Views: 8053

Re: Alfine 8-speed ?clutch? problem in gears 2, 3, 4

I didn't suggest using any calcium grease, but only the Morgan which is formulated specifically for use on bicycles.
Let's try to keep some sense of proportion here. With regard to a bicycle which has been left out in the weather for a couple of years and been used for several thousand miles in all conditions, a draggy gear cable is likely to be the least of its problems!
by Roadster
29 Mar 2018, 1:47pm
Forum: Bikes & Bits – Technical section
Topic: Alfine 8-speed ?clutch? problem in gears 2, 3, 4
Replies: 58
Views: 8053

Re: Alfine 8-speed ?clutch? problem in gears 2, 3, 4

Brucey wrote:BTW I would be cautious of using a grease with a calcium based soap; these often confer waterpoofness by the water reacting with the soap to thicken it, which would presumably cause a cable to turn draggy if water gets in

This seems a spurious objection to me. I mean, a grease found eminently suitable for use in marine environments is hardly likely to become worse than useless when exposed to the conditions typically found within the gear cable of a bicycle. Even if it did thicken to the extent you presume it would, its coefficient of friction would still remain extremely low.

Speaking from experience, I applied Morgan calcium grease to the inner of my own gear cable when I installed it two years ago. The cable is fully enclosed over its entire length from handlebar grip to rear hub so plenty of opportunity there for it to turn draggy, but it hasn't. On the contrary, it has required no further attention, and if I hold down the downshift lever of my Zerode-modified SRAM X9 shifter, my Alfine 8 rear hub will click down rapidly to 1st gear entirely of its own volition.

I get the distinct impression that you advise caution in the use of calcium grease not because of any real risk of the cable turning draggy, but merely because someone other than yourself suggested it.
by Roadster
27 Mar 2018, 2:05pm
Forum: Bikes & Bits – Technical section
Topic: Alfine 8-speed ?clutch? problem in gears 2, 3, 4
Replies: 58
Views: 8053

Re: Alfine 8-speed ?clutch? problem in gears 2, 3, 4

Serious dirt enters only at the hub end of the cable and, if this is a problem, can be prevented with the 840 booted version of the cassette joint. One lube I've seen recommended is chain oil, but I use a calcium grease http://www.morganblue.net/product/calcium-grease-200cc/
for its greater moisture-resistant advantage over lithium greases, although either type is better than nothing.
by Roadster
24 Mar 2018, 6:10pm
Forum: Bikes & Bits – Technical section
Topic: What frame material for my new bike ?
Replies: 8
Views: 1072

Re: New bike

What about titanium instead of either?
by Roadster
24 Mar 2018, 6:07pm
Forum: Bikes & Bits – Technical section
Topic: Best disposable gloves?
Replies: 18
Views: 1317

Re: Best disposable gloves?

Most medical grade gloves are nitrile these days, due to the threat from AIDS and nerve agents like Novichok... :shock:
by Roadster
24 Mar 2018, 5:06pm
Forum: Bikes & Bits – Technical section
Topic: Best disposable gloves?
Replies: 18
Views: 1317

Re: Best disposable gloves?

Nitrile disposable gloves are widely available (e.g. on eBay) for around £6.50 for a box of 100.
All will resist common solvents and there's not much point in paying more for reusable ones.
I always carry some in my toolkit for keeping my hands clean during roadside repairs.
by Roadster
23 Mar 2018, 2:37am
Forum: Bikes & Bits – Technical section
Topic: Has something changed in tyre valves?
Replies: 20
Views: 2225

Re: Has something changed in tyre valves?

I don't think my Schwalbe cores had been fully tightened from new but I'd had no problem with other pumps until I used the Lezyne. I didn't have any threadlock handy so just tightened the cores down firmly with a small open-ended spanner.

The Lezyne has an exceptionally grippy connector (nothing to do with the hose pressure release button, by the way) but the tightened cores withstood rigorous testing and I've used it a couple of times since then with no problems. If you've used threadlock on yours and tightened them down firmly, they should be fine.
by Roadster
22 Mar 2018, 4:58pm
Forum: Does anyone know … ?
Topic: Internal hub geared bikes
Replies: 14
Views: 3429

Re: Internal hub geared bikes

dobbo800 wrote:Where in my post did I claim my alfine/belt combo is significantly quieter than your alfine/chain combo?

It was where you wrote, "The combination of the Alfine and belt drive make for a very quiet bike". The quietness of your bike is not due to the combination of the Alfine and belt drive, but to the Alfine hub alone.

It hardly needs saying that a poorly or inadequately lubricated chain will be noisier than a well lubricated one. The well lubricated chain on my Alfine-equipped bike runs silently and a belt would confer no advantage in that particular regard.
by Roadster
21 Mar 2018, 6:22pm
Forum: Does anyone know … ?
Topic: Internal hub geared bikes
Replies: 14
Views: 3429

Re: Internal hub geared bikes

Well, more or less commonly found on hybrid, roadster, town/city/Dutch, shopping, utility bikes but the point is, not commonly found on "Road" bikes.