Search found 504 matches

by NetworkMan
21 Dec 2018, 3:43pm
Forum: Bikes & Bits – Technical section
Topic: Those flat bar triple front mechs DO work on road shifters!
Replies: 11
Views: 759

Re: Those flat bar triple front mechs DO work on road shifters!

It used to be that all flat bar levers were ATB shifters. If I remember correctly, then came along cyclists who wanted the speed of a racer but without the drop bars, so flat bar levers for road gears became available. Due to chain line/chain ring sizes they couldn't simply put ATB mechs/levers on ...
by NetworkMan
19 Dec 2018, 11:03am
Forum: Bikes & Bits – Technical section
Topic: front mech - not reaching outer chainring
Replies: 11
Views: 427

Re: front mech - not reaching outer chainring

You could try an FD intended for a 34.9mm downtube and use an eccentric shim. I presume your downtube is 1.125 inch. e.g. https://www.sjscycles.co.uk/gear-spares/thorn-eccentric-front-mech-shim-286-to-349-black-plastic-hand-finished-split/ No guarantees though and you probably need to hope that the ...
by NetworkMan
12 Dec 2018, 4:19pm
Forum: Bikes & Bits – Technical section
Topic: hollow tech...low chainrings for touring?
Replies: 6
Views: 387

Re: hollow tech...low chainrings for touring?

Yes, I think you can use 48/38/24 on a 130/74 mm chainset which AFAIK is available in Shmano 105 HT2 but possibly soon to go obsolete. I looked into it myself but decided that there was no gain apart a saving of about 200 g. The downside is the lack of durability of course. Out of curiosity, why do ...
by NetworkMan
12 Dec 2018, 4:10pm
Forum: Bikes & Bits – Technical section
Topic: Corroded chainring bolts
Replies: 16
Views: 698

Re: Corroded chainring bolts

..... or knuckles were harmed ........ On my last bicycle rebuild job I made myself put on the leather gardening gloves before any job with the slightest risk of knuckle damage, for that one big heave that's needed. For what must be the first time I completed the whole job with knuckles intact. Gar...
by NetworkMan
5 Dec 2018, 11:36am
Forum: Bikes & Bits – Technical section
Topic: Advise pls-Bike build for hilly commuter, light tourer
Replies: 14
Views: 715

Re: Advise pls-Bike build for hilly commuter, light tourer

So heavy - I won’t be able to lift easy for train trips or into car etc. No way my tiny missus will be able to Shift around easily either Just make sure you don't confuse the two:- Lifting - 1 kg off a 12 kg bike is 8.3% - probably significant. Riding - 1 kg off a 12 kg bike with a 50 kg rider is o...
by NetworkMan
1 Dec 2018, 9:21pm
Forum: Bikes & Bits – Technical section
Topic: Electric shifters vs mechanical
Replies: 73
Views: 1901

Re: Electric/electronic shifters vs mechanical

The description "electronic" is misleading since these systems have a combination of electronic, electrical and mechanical parts as well as batteries of course. You need all four to be working but the name implies a comparison with, say, a digital watch which is almost purely electronic.
by NetworkMan
29 Nov 2018, 4:32pm
Forum: Bikes & Bits – Technical section
Topic: 8 speed Front Mech Triple Mountain Bike 44/32/22
Replies: 4
Views: 360

Re: 8 speed Front Mech Triple Mountain Bike 44/32/22

The chainstay angle is the angle between chainstay and seat tube. A 26" wheel mountain bike used to be reckoned to have a chainstay angle of 66-69 degrees. A road bike will have larger wheel and may have a lower bottom bracket both of which will reduce the chainstay angle w.r.t. the mountain bi...
by NetworkMan
28 Nov 2018, 9:23pm
Forum: Bikes & Bits – Technical section
Topic: Can you identify this tool
Replies: 12
Views: 938

Re: Can you identify this tool

Yes, the lens idea must surely be close. You twiddle the knurled wheel until the two 'screwdriver' parts are the right distance apart to engage with the slots of a lockring.
by NetworkMan
23 Nov 2018, 4:00pm
Forum: Does anyone know … ?
Topic: British Transport Films: Cyclists Special
Replies: 20
Views: 1355

Re: British Transport Films: Cyclists Special

Interesting that they quote a gear range of 29-82 inches. I reckon that's a sensible choice for a touring bike with (only!) 10 speeds.
by NetworkMan
23 Nov 2018, 3:56pm
Forum: Does anyone know … ?
Topic: SPA CYCLES Ti Roughstuff
Replies: 5
Views: 513

Re: SPA CYCLES Ti Roughstuff

Is it just the clearance for large tyres you need? If so how wide? - you can fit a 37 mm wide tyre on the Spa tourer and Wayfarer. I'm using the Vittoria Hyper 35/37 mm on my Spa tourer with mudguards. Do you fancy the longer frame to make it easier to use flat bars? AFAIK the main advantage of the ...
by NetworkMan
23 Nov 2018, 3:39pm
Forum: Bikes & Bits – Technical section
Topic: Intermittent issue onto small chainring
Replies: 47
Views: 2407

Re: Intermittent issue onto small chainring

Did you try fiddling with the low limit screw on the FD - and noting the point upthread about fitting a jump stop to prevent the chain from falling off the little ring onto the BB shell? The mech seems to have gone in as far as it will go. Have pulled the limit screw out a long way. I can't actuall...
by NetworkMan
23 Nov 2018, 3:11pm
Forum: Bikes & Bits – Technical section
Topic: Intermittent issue onto small chainring
Replies: 47
Views: 2407

Re: Intermittent issue onto small chainring

On this, this has long puzzled me. What is this compatibility issue? The front mech has no clicks itself but surely just pulls to where the shifter takes it? And then stops? Are the chainrings on road and MTB chainsets spaced differently? Sorry, probably being really daft and missed something obvio...
by NetworkMan
23 Nov 2018, 11:34am
Forum: Bikes & Bits – Technical section
Topic: Intermittent issue onto small chainring
Replies: 47
Views: 2407

Re: Intermittent issue onto small chainring

The other odd thing is that I seem to remember that Spa recommended the Deore 591 front mech for this chainset, even though the 591 itself seems to be listed as for a 12 tooth difference. I don't think they'd advise a Deore FD for the XD2 chainset. It has a chainline of ~45mm so needs a road derail...
by NetworkMan
22 Nov 2018, 9:58am
Forum: Bikes & Bits – Technical section
Topic: RX100 Replacement
Replies: 6
Views: 409

Re: RX100 Replacement

Hi again guys Following advice from Sheldon Brown that 'most front shifters can be made to work after a fashion on most rings' I tried an old 'Falcon' shifter (from one of my boxes of spares) for which I risked bending the camp from 28mm to accommodate the 32mm seat tube. It works like a dream :D B...
by NetworkMan
22 Nov 2018, 9:52am
Forum: Bikes & Bits – Technical section
Topic: Wobbly Cassette
Replies: 7
Views: 714

Re: Wobbly Cassette

Another possibility with Shimano is the lockring. There are at least two types with the one intended for an 11T 8 speed top sprocket having more thread than the other which came from an old 13-30 7 speed.. I got caught out with this when building a hybrid cassette because the thread fully engaged be...