Search found 1618 matches

by robc02
14 Oct 2019, 8:06pm
Forum: Bikes & Bits – Technical section
Topic: Cantilever brakes
Replies: 16
Views: 595

Re: Cantilever brakes

Those are wide profile cantis which are relatively insensitive to straddle height, but all the previous stuff about pad type and cable condition etc is still important. Plus there have been at least two different cable pulls on Shimano STI levers - you will get more power with the type with the leas...
by robc02
13 Oct 2019, 11:02am
Forum: Bikes & Bits – Technical section
Topic: Shoes
Replies: 4
Views: 257

Re: Shoes

I had similar problems with Sidi shoes a few years back, despite having managed OK with previous versions. Sometimes I could fiddle with the adjustments and get reasonably comfortable but it was a bit hit and miss. In the end I found that I got on much better with Specialized shoes and switched over...
by robc02
13 Oct 2019, 10:42am
Forum: Bikes & Bits – Technical section
Topic: Noisy DH-3N20; guessing game...?
Replies: 14
Views: 616

Re: Noisy DH-3N20; guessing game...?

One (or more) of the claws loose and catching against the magnets?
by robc02
8 Oct 2019, 7:34pm
Forum: Bikes & Bits – Technical section
Topic: Gear changing strategy; how do you use a triple?
Replies: 61
Views: 1633

Re: Gear changing strategy; how do you use a triple?

I have only one bike with a triple - it's my LHT with 46,36,24 and 11-32 10 speed cassette (I would happily swap the 11 for a 12 if I could find one looking for a home). I use it as I would use a double plus a bailout granny ring for particularly stiff climbs, usually when carrying a camping load. F...
by robc02
6 Oct 2019, 3:07pm
Forum: Bikes & Bits – Technical section
Topic: Shimano Plastic Rim Tape
Replies: 12
Views: 481

Re: Shimano Plastic Rim Tape

I must confess that this is something I have never given much thought to until recently. Having looked at a few rims I see there is quite a bit of variation in the size of the inner hole between manufacturers and models. Am I missing something or would you reasonably expect the manufacturer to drill...
by robc02
6 Oct 2019, 9:18am
Forum: Bikes & Bits – Technical section
Topic: Shimano Plastic Rim Tape
Replies: 12
Views: 481

Re: Shimano Plastic Rim Tape

The extra thickness must put more strain than usual on the valve, (and may expose bad tubes and/or possibly cause some failures directly) but to my mind it is certainly the lesser of two evils if the alternative is to fit a tube to a bad rim. For a valve fitted thusly to come away via peel, I also ...
by robc02
5 Oct 2019, 7:11pm
Forum: Bikes & Bits – Technical section
Topic: Shimano Plastic Rim Tape
Replies: 12
Views: 481

Re: Shimano Plastic Rim Tape

This of course also forces the valve further above the rim well than normal; however I have yet to see a valve fail as a result of this. After fitting an insert which forced the valve up as you describe, I did suffer another split around the valve seat - albeit it survived for longer than without t...
by robc02
5 Oct 2019, 2:50pm
Forum: Bikes & Bits – Technical section
Topic: Shimano Plastic Rim Tape
Replies: 12
Views: 481

Re: Shimano Plastic Rim Tape

I recently suffered a spate of damaged tubes on a wheel with a plastic rim tape with a large valve hole. Strangely, the tape had been in use for several years with no problems, but suddenly I started seeing tubes splitting around the valve seat. Maybe the tape had moved slightly when changing a tyre...
by robc02
30 Sep 2019, 5:48pm
Forum: Bikes & Bits – Technical section
Topic: Removal of non-fixed bottom bracket bearing cup
Replies: 9
Views: 360

Re: Removal of non-fixed bottom bracket bearing cup

+1 on the BIG nut/bolt/spring washers diy removal tool on the Sheldon Brown link. I don't think any amount of rust could resist that used with a socket set and extension tube!... it very much depends on what bolt you use. A typical high tensile (8.8 grade) M14 bolt has a maximum tightening torque o...
by robc02
30 Sep 2019, 10:33am
Forum: Bikes & Bits – Technical section
Topic: Removal of non-fixed bottom bracket bearing cup
Replies: 9
Views: 360

Re: Removal of non-fixed bottom bracket bearing cup

You might be able to adapt the method recommended by Sheldon for fixed cup removal: https://sheldonbrown.com/tooltips/bbcups.html You would need to turn the bolt head from the inside of the cup so as to tighten it against the cup. This would mean a thick pile of washers or a spacer to bring the bolt...
by robc02
21 Sep 2019, 5:54pm
Forum: Does anyone know … ?
Topic: Cyclists v Tummy fat( Power/weight ratio implications)
Replies: 41
Views: 1621

Re: Cyclists v Tummy fat( Power/weight ratio implications)

You're making me feel the odd one out! Now 61 and same weight and shape as when I was 17. I've got a jersey from back then and it still fits. 6ft tall and 10st 3lb give or take a pound. The only weight issue I have had has been unintentionally losing it. When I returned from a week's tour last summe...
by robc02
21 Sep 2019, 9:19am
Forum: Bikes & Bits – Technical section
Topic: Cantilever brakes ..... HELP !!!
Replies: 70
Views: 2237

Re: Cantilever brakes ..... HELP !!!

... the possibility of the yoke falling onto the tyre with bad consequences if a cable fails. The early (early 90s?) mountainbike design of using a small pulley built into the underside of the stem to run the brake cable from the outer stop, also built into the underside of the stem, to the straddl...
by robc02
20 Sep 2019, 7:32pm
Forum: Bikes & Bits – Technical section
Topic: Cantilever brakes ..... HELP !!!
Replies: 70
Views: 2237

Re: Cantilever brakes ..... HELP !!!

I think Cantis are an unnecessary abomination [I await the flack]. A nuisance to keep setup and not that powerful. I realise that they are designed for wider tyres, but how wide? I have a Galaxy that I have converted from canti's to cheap un-named side-pulls with 32c tyres. Brakes very well and eas...